From 791c75ecd2e209de8d034dc4e4f797cf17a6fa30 Mon Sep 17 00:00:00 2001 From: Paulo Truta Date: Thu, 22 Jan 2026 23:18:37 +0100 Subject: [PATCH] Initial commit: Mobile cheese POC with Python proxy server --- .gitignore | 7 + Dockerfile | 8 + LICENSE | 634 ++ README.md | 89 + css/style.css | 244 + docker-compose.yml | 8 + example.html | 16264 +++++++++++++++++++++++++++++++++ humans.txt | 8 + images/Chain Link.svg | 1 + images/Grater Bed.svg | 1 + images/Grater Blade.svg | 1 + images/Green Lit Light.svg | 1 + images/Green Unlit Light.svg | 1 + images/Lever Back.svg | 1 + images/Lever Front.svg | 1 + images/Lever Handle.svg | 1 + images/Metal Panel.svg | 1 + images/Red Lit Light.svg | 1 + images/Red Unlit Light.svg | 1 + images/Sausage.svg | 1 + images/Wheel.svg | 1 + images/favicon.png | Bin 0 -> 355 bytes index.html | 53 + js/machine.js | 569 ++ requirements.txt | 1 + server.py | 104 + 26 files changed, 18002 insertions(+) create mode 100644 .gitignore create mode 100644 Dockerfile create mode 100644 LICENSE create mode 100644 README.md create mode 100644 css/style.css create mode 100644 docker-compose.yml create mode 100644 example.html create mode 100644 humans.txt create mode 100644 images/Chain Link.svg create mode 100644 images/Grater Bed.svg create mode 100644 images/Grater Blade.svg create mode 100644 images/Green Lit Light.svg create mode 100644 images/Green Unlit Light.svg create mode 100644 images/Lever Back.svg create mode 100644 images/Lever Front.svg create mode 100644 images/Lever Handle.svg create mode 100644 images/Metal Panel.svg create mode 100644 images/Red Lit Light.svg create mode 100644 images/Red Unlit Light.svg create mode 100644 images/Sausage.svg create mode 100644 images/Wheel.svg create mode 100644 images/favicon.png create mode 100644 index.html create mode 100644 js/machine.js create mode 100644 requirements.txt create mode 100644 server.py diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8f450dd --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +__pycache__/ +*.pyc +*.pyo +.DS_Store +*.log +.venv/ +venv/ diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..2642666 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,8 @@ +FROM python:3.11-slim + +WORKDIR /app +COPY . . + +EXPOSE 9001 + +CMD ["python3", "server.py"] diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..a6f3849 --- /dev/null +++ b/LICENSE @@ -0,0 +1,634 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + Copyright (C) 2026 Rubén Beltrán del Río + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see https://git.sr.ht/~rbdr/machine.unlimited.pizza diff --git a/README.md b/README.md new file mode 100644 index 0000000..734e55c --- /dev/null +++ b/README.md @@ -0,0 +1,89 @@ +# Machine Unlimited - Mobile Cheese POC + +A mobile-optimized browsing interface for machine.unlimited.pizza with an interactive "cheese dragging" system. + +## Features + +- 🧀 Tap links to create cheese emojis +- 🖱️ Drag cheese to the machine +- 🔪 Sausage appears in the grater +- ⚙️ Click sausage to navigate + animated grinding +- 🎬 Levers and grater animate during navigation +- 🔒 Security: SSRF protection, localhost blocking + +## Quick Start + +### Requirements +- Python 3.7+ +- An initial webpage URL + +### Installation + +```bash +git clone https://gitea.jpt.land/jpt/machine-unlimited-mobile.git +cd machine-unlimited-mobile +``` + +### Running + +```bash +python3 server.py +``` + +Server runs on `http://localhost:9001` + +Open in browser: +``` +http://localhost:9001/?url=https://en.wikipedia.org/wiki/Cheese_grater +``` + +### Via ngrok (for sharing) + +```bash +# In another terminal +ngrok http 9001 + +# Share the ngrok URL with friends +# https://your-ngrok-url.ngrok-free.app/?url=https://example.com +``` + +## How It Works + +### Mobile Flow +1. **Cheese Creation** - Tap any link on the page → 🧀 emoji appears +2. **Dragging** - Touch and drag the cheese across the screen +3. **Grater Drop** - Release over the grater area → sausage button appears +4. **Navigation** - Tap the sausage → grater animates → new page loads + +### Architecture + +- **server.py** - Proxy server that: + - Fetches external URLs + - Injects click handlers for link detection + - Returns HTML with base tag for relative URLs + - Security checks (blocks localhost, file://, etc.) + +- **js/machine.js** - Enhanced with: + - Mobile cheese dragging system + - Message listener for link taps from iframe + - Sausage creation and animations + - Lever/wheel movement during grinding + +## Security + +- ✅ No SSRF attacks (localhost/private IPs blocked) +- ✅ Only http/https protocols allowed +- ✅ 30s timeout per request +- ✅ Max 1MB response size +- ✅ All URLs URL-encoded in iframe src + +## Technology + +- Original: [machine.unlimited.pizza](https://git.sr.ht/~rbdr/machine.unlimited.pizza) +- Server: Python 3 SimpleHTTPServer +- Frontend: Vanilla JavaScript with CSS animations + +## Mobile vs Desktop + +- **Mobile**: Uses the new cheese dragging interface +- **Desktop**: Use the original [machine.unlimited.pizza](https://machine.unlimited.pizza) for the traditional wheel/lever experience diff --git a/css/style.css b/css/style.css new file mode 100644 index 0000000..c1c9004 --- /dev/null +++ b/css/style.css @@ -0,0 +1,244 @@ +* { + margin: 0; + padding: 0; +} + +body { + overflow: hidden; +} + +iframe { + display: block !important; + background-color: #fff; + height: calc(100vh - 4rem); + top: var(--loadProgress); + position: absolute; + width: 100vw; +} + +/* The bed of the Machine */ + +.machine { + background: url("/images/Metal Panel.svg"); + background-repeat: repeat-x; + bottom: 0; + height: 4rem; + position: fixed; + width: 100vw; + z-index: 9000; +} + +/* Labels */ + +label { + background-color: #202123; + text-shadow: + 1px -1px 0px #42464dff, + -1px 1px 0px #ffffff1a; + color: #eeeeee; + display: block; + font: 0.625rem "Arial Rounded MT Bold"; + padding: 0.0625rem 0.3125rem; + text-transform: uppercase; + transform: rotate(-5deg); + width: max-content; +} + +/* The URL grater and indicators */ + +.link-grater { + position: absolute; + left: 4rem; + top: 0; + + .grater-bed { + background: url("/images/Grater Bed.svg"); + background-repeat: no-repeat; + background-position: bottom; + position: absolute; + height: 4rem; + top: -4rem; + width: 8.5rem; + + &::before { + background: url("/images/Sausage.svg"); + background-repeat: no-repeat; + content: " "; + display: block; + height: 3em; + opacity: 0; + position: absolute; + transition: all 0.5s; + width: 8.125em; + } + &.drag-over::before { + opacity: 0.5; + } + } + + .grater-blade { + background: url("/images/Grater Blade.svg"); + height: 0.625rem; + left: var(--graterTravel); + position: absolute; + bottom: 0.625rem; + width: 3.4375rem; + z-index: 10; + } + .lever { + bottom: -2.75rem; + height: 4.4375rem; + position: absolute; + left: 12rem; + width: 6.125rem; + + .stem { + background: url("/images/Lever Handle.svg"); + height: 3.4375rem; + position: absolute; + width: 3.0625rem; + top: 1em; + transform: rotate(var(--leverRotation)); + transform-origin: calc(100% - 3px) calc(100% - 2px); + + .handle { + cursor: pointer; + height: 2.75rem; + position: absolute; + left: -0.75rem; + top: -1rem; + width: 2.75rem; + } + } + + &::before { + background: url("/images/Lever Back.svg"); + bottom: -0.5rem; + content: ""; + height: 1.375rem; + left: 2.25rem; + position: absolute; + width: 1.375rem; + } + + &::after { + background: url("/images/Lever Front.svg"); + bottom: -0.5rem; + content: ""; + height: 1.0625rem; + left: 2.40625rem; + position: absolute; + width: 1.0625rem; + } + } + + .indicator-leds { + position: absolute; + width: max-content; + + bottom: -3.3125rem; + left: 10rem; + + .indicator { + display: inline-block; + height: 0.6875rem; + width: 0.6875rem; + } + } + + label { + position: absolute; + bottom: -3rem; + left: 1rem; + } +} + +.ready-to-grate { + background: url("/images/Red Unlit Light.svg"); +} +.ready-to-load { + background: url("/images/Green Unlit Light.svg"); +} +[data-current-state="readyToGrate"] .ready-to-grate { + background: url("/images/Red Lit Light.svg"); +} +[data-current-state="readyToLoad"] .ready-to-load { + background: url("/images/Green Lit Light.svg"); +} + +/* The Link Loader Wheel and Chain Mechanism */ + +.chain { + background: url("/images/Chain Link.svg"); + background-position-y: var(--chainOffset); + background-repeat: repeat-y; + height: 100vh; + position: fixed; + right: 1rem; + top: 0; + width: 1rem; +} + +.url-loader { + position: absolute; + right: 1.5rem; + top: -3rem; + + .wheel { + height: 6rem; + width: 6rem; + + .body { + background: url("/images/Wheel.svg"); + height: 6rem; + left: 0; + position: absolute; + top: 0; + transform: rotate(var(--wheelRotation)); + width: 6rem; + } + + .handle { + cursor: pointer; + height: 2.75rem; + position: absolute; + right: -1.125rem; + top: 1.625rem; + width: 2.75rem; + } + } + + label { + position: absolute; + bottom: 0; + left: -4rem; + } +} + +/* Make a Sausage */ +.sausage { + align-items: center; + background: url("/images/Sausage.svg"); + background-position: top; + background-repeat: no-repeat; + color: #fff; + display: flex; + font: 0.625rem "Arial Rounded MT Bold"; + height: calc(3rem - var(--grateLevel)); + justify-content: center; + overflow: hidden; + position: absolute; + top: var(--grateLevel); + left: 0; + text-align: center; + text-overflow: ellipsis; + text-transform: uppercase; + width: 8.125rem; + white-space: nowrap; + z-index: 0; +} + +/* Util */ +.no-select { + user-select: none; +} diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..b292f6d --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,8 @@ +version: '3.8' +services: + machine: + build: . + ports: + - "9001:9001" + environment: + - PYTHONUNBUFFERED=1 diff --git a/example.html b/example.html new file mode 100644 index 0000000..7bc0f99 --- /dev/null +++ b/example.html @@ -0,0 +1,16264 @@ + + + + + Machine - Wikipedia + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ From Wikipedia, the free encyclopedia +
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+ + +
+ This article is about devices designed to perform tasks. For + other uses, see + Machine (disambiguation). +
+ +
+ "Machinery" redirects here. For other uses, see + Machinery (disambiguation). +
+

+
+ +
+ A worker operating a + milling machine + in the early 20th century +
+
+

+ A machine is a + thermodynamic system + that uses + power + to apply forces and + control + movement to + perform an action. The term is commonly applied to + artificial devices, such as those employing + engines or motors, + but also to natural biological macromolecules, such as + molecular machines. Machines can be driven by + animals + and + people, + by natural forces such as + wind and + water, and by + chemical, + thermal, or + electrical + power, and include a system of + mechanisms + that shape the + actuator input + to achieve a specific application of output forces and + movement. They can also include + computers + and sensors that monitor performance and plan movement, + often called mechanical systems. +

+

+ Renaissance natural philosophers identified six + simple machines + which were the elementary devices that put a load into + motion, and calculated the ratio of output force to input + force, known today as + mechanical advantage.[1] +

+

+ Modern machines are complex systems that consist of + structural elements, + mechanisms + and control components and include interfaces for convenient + use. Examples include: a wide range of + vehicles, such + as trains, + automobiles, + boats and + airplanes; + appliances + in the home and office, including computers, building + air handling + and + water handling systems; as well as + farm machinery, + machine tools + and + factory automation + systems and robots. +

+ +
+

Etymology

+
+

+ The English word machine comes through + Middle French + from Latin + machina,[2] + which in turn derives from the + Greek + (Doric + μαχανά + makhana, Ionic + μηχανή + mekhane + 'contrivance, machine, engine',[3] + a derivation from + μῆχος + mekhos + 'means, expedient, remedy'[4]).[5] + The word mechanical (Greek: + μηχανικός) comes from the same Greek roots. A wider meaning of + 'fabric, structure' is found in classical Latin, but not in + Greek usage. This meaning is found in late medieval French, + and is adopted from the French into English in the mid-16th + century. +

+

+ In the 17th century, the word machine could also mean a + scheme or plot, a meaning now expressed by the derived + machination. The modern meaning develops out of specialized + application of the term to + stage engines + used in + theater + and to military + siege engines, both in the late 16th and early 17th centuries. The + OED + traces the formal, modern meaning to + John Harris' + Lexicon Technicum + (1704), which has: +

+
+
+ Machine, or Engine, in Mechanicks, is whatsoever hath + Force sufficient either to raise or stop the Motion of a + Body. Simple Machines are commonly reckoned to be Six in + Number, viz. the Ballance, Leaver, Pulley, Wheel, Wedge, + and Screw. Compound Machines, or Engines, are + innumerable. +
+
+

+ The word + engine + used as a (near-) synonym both by Harris and in later + language derives ultimately (via + Old French) from Latin + ingenium + 'ingenuity, an invention'. +

+
+

History

+
+
+ +
+ A flint + hand axe was + found in + Winchester. +
+
+

+ The hand axe, + made by chipping flint to form a + wedge, in the hands of a human transforms force and movement of + the tool into a transverse splitting forces and movement of + the workpiece. The hand axe is the first example of a + wedge, the oldest of + the six classic + simple machines, from which most machines are based. The second oldest + simple machine was the + inclined plane + (ramp),[6] + which has been used since + prehistoric + times to move heavy objects.[7][8] +

+

+ The other four simple machines were invented in the + ancient Near East.[9] + The wheel, along + with the + wheel and axle + mechanism, was invented in + Mesopotamia + (modern Iraq) during the 5th millennium BC.[10] + The lever mechanism + first appeared around 5,000 years ago in the + Near East, + where it was used in a simple + balance scale,[11] + and to move large objects in + ancient Egyptian technology.[12] + The lever was also used in the + shadoof + water-lifting device, the first + crane + machine, which appeared in Mesopotamia + c. 3000 BC,[11] + and then in + ancient Egyptian technology + c. 2000 BC.[13] + The earliest evidence of + pulleys date back + to Mesopotamia in the early 2nd millennium BC,[14] + and + ancient Egypt + during the + Twelfth Dynasty + (1991–1802 BC).[15] + The + screw, the last of the simple machines to be invented,[16] + first appeared in + Mesopotamia + during the + Neo-Assyrian + period (911–609) BC.[14] + The + Egyptian pyramids + were built using three of the six simple machines, the + inclined plane, the wedge, and the lever.[17] +

+

+ Three of the simple machines were studied and described by + Greek philosopher + Archimedes + around the 3rd century BC: the lever, pulley and screw.[18][19] + Archimedes discovered the principle of + mechanical advantage + in the lever.[20] + Later Greek philosophers defined the classic five simple + machines (excluding the inclined plane) and were able to + roughly calculate their mechanical advantage.[1] + Hero of Alexandria + (c. 10–75 AD) + in his work Mechanics lists five mechanisms that can + "set a load in motion"; lever, + windlass, + pulley, wedge, and screw,[19] + and describes their fabrication and uses.[21] + However, the Greeks' understanding was limited to + statics (the + balance of forces) and did not include + dynamics + (the tradeoff between force and distance) or the concept of + work.[citation needed] +

+
+ +
+ This ore crushing machine is powered by a water wheel. +
+
+

+ The earliest practical + wind-powered + machines, the + windmill and + wind pump, first appeared in the + Muslim world + during the + Islamic Golden Age, in what are now Iran, Afghanistan, and Pakistan, by the + 9th century AD.[22][23][24][25] + The earliest practical + steam-powered + machine was a + steam jack + driven by a + steam turbine, described in 1551 by + Taqi ad-Din Muhammad ibn Ma'ruf + in + Ottoman Egypt.[26][27] +

+

+ The + cotton gin + was invented in India by the 6th century AD,[28] + and the + spinning wheel + was invented in the + Islamic world + by the early 11th century,[29] + both of which were fundamental to the growth of the + cotton industry. The spinning wheel was also a precursor to the + spinning jenny.[30] +

+

+ The earliest + programmable machines + were developed in the Muslim world. A + music sequencer, a programmable + musical instrument, was the earliest type of programmable machine. The first + music sequencer was an automated + flute player + invented by the + Banu Musa + brothers, described in their + Book of Ingenious Devices, in the 9th century.[31][32] + In 1206, Al-Jazari invented programmable + automata/robots. He + described four + automaton + musicians, including drummers operated by a programmable + drum machine, where they could be made to play different rhythms and + different drum patterns.[33] +

+

+ During the + Renaissance, the dynamics of the Mechanical Powers, as the + simple machines were called, began to be studied from the + standpoint of how much useful work they could perform, + leading eventually to the new concept of mechanical + work. In 1586 Flemish engineer + Simon Stevin + derived the mechanical advantage of the inclined plane, and + it was included with the other simple machines. The complete + dynamic theory of simple machines was worked out by Italian + scientist + Galileo Galilei + in 1600 in Le Meccaniche ("On Mechanics").[34][35] + He was the first to understand that simple machines do not + create energy, + they merely transform it.[34] +

+

+ The classic rules of sliding + friction in + machines were discovered by + Leonardo da Vinci + (1452–1519), but remained unpublished in his notebooks. They + were rediscovered by + Guillaume Amontons + (1699) and were further developed by + Charles-Augustin de Coulomb + (1785).[36] +

+

+ James Watt + patented his + parallel motion + linkage in 1782, which made the double acting steam engine + practical.[37] + The + Boulton and Watt + steam engine and later designs powered + steam locomotives, + steam ships, and + factories. +

+
+ Bonsack's machine +
+ James Albert Bonsack's cigarette rolling machine was + invented in 1880 and patented in 1881. +
+
+

+ The + Industrial Revolution + was a period from 1750 to 1850 where changes in agriculture, + manufacturing, mining, transportation, and technology had a + profound effect on the social, economic and cultural + conditions of the times. It began in the + United Kingdom, then subsequently spread throughout + Western Europe, + North America, Japan, and + eventually the rest of the world. +

+

+ Starting in the later part of the 18th century, there began + a transition in parts of + Great Britain's previously manual labour and draft-animal-based economy + towards machine-based manufacturing. It started with the + mechanisation of the textile industries, the development of + iron-making + techniques and the increased use of + refined coal.[38] +

+
+

Simple machines

+
+ +
+ Main article: + Simple machine +
+
+ +
+ Chambers' Cyclopædia + (1728) has a table of simple mechanisms.[39] + Simple machines provide a "vocabulary" for understanding + more complex machines. +
+
+

+ The idea that a machine can be decomposed into simple + movable elements led + Archimedes + to define the lever, + pulley and + screw as + simple machines. By the time of the Renaissance this list increased to + include the + wheel and axle, + wedge + and + inclined plane. The modern approach to characterizing machines focusses + on the components that allow movement, known as + joints. +

+

+ Wedge (hand axe): Perhaps the first example of a device + designed to manage power is the + hand axe, also + called + biface + and + Olorgesailie. A hand axe is made by chipping stone, generally flint, to + form a bifacial edge, or + wedge. A wedge is a simple machine that transforms lateral force + and movement of the tool into a transverse splitting force + and movement of the workpiece. The available power is + limited by the effort of the person using the tool, but + because power is the product of force and movement, the + wedge amplifies the force by reducing the movement. This + amplification, or + mechanical advantage + is the ratio of the input speed to output speed. For a wedge + this is given by 1/tanα, where α is the tip angle. The faces + of a wedge are modeled as straight lines to form a sliding + or + prismatic joint. +

+

+ Lever: The lever is + another important and simple device for managing power. This + is a body that pivots on a fulcrum. Because the velocity of + a point farther from the pivot is greater than the velocity + of a point near the pivot, forces applied far from the pivot + are amplified near the pivot by the associated decrease in + speed. If a is the distance from the pivot to the + point where the input force is applied and b is the + distance to the point where the output force is applied, + then a/b is the + mechanical advantage + of the lever. The fulcrum of a lever is modeled as a hinged + or + revolute joint. +

+

+ Wheel: The wheel is + an important early machine, such as the + chariot. A wheel + uses the law of the lever to reduce the force needed to + overcome + friction when + pulling a load. To see this notice that the friction + associated with pulling a load on the ground is + approximately the same as the friction in a simple bearing + that supports the load on the axle of a wheel. However, the + wheel forms a lever that magnifies the pulling force so that + it overcomes the frictional resistance in the bearing. +

+
+ Illustration of a Four-bar linkage from Kinematics of Machinery, 1876 +
+ The Kinematics of Machinery (1876) + has an illustration of a + four-bar linkage. +
+
+

+ The classification of + simple machines + to provide a strategy for the design of new machines was + developed by + Franz Reuleaux, who collected and studied over 800 elementary + machines.[40] + He recognized that the classical + simple machines + can be separated into the lever, pulley and wheel and axle + that are formed by a body rotating about a hinge, and the + inclined plane, wedge and screw that are similarly a block + sliding on a flat surface.[41] +

+

+ Simple machines are elementary examples of + kinematic chains + or + linkages + that are used to model + mechanical systems + ranging from the steam engine to robot manipulators. The + bearings that form the fulcrum of a lever and that allow the + wheel and axle and pulleys to rotate are examples of a + kinematic pair + called a hinged joint. Similarly, the flat surface of an + inclined plane and wedge are examples of the + kinematic pair + called a sliding joint. The screw is usually identified as + its own kinematic pair called a helical joint. +

+

+ This realization shows that it is the joints, or the + connections that provide movement, that are the primary + elements of a machine. Starting with four types of joints, + the rotary joint, sliding joint, cam joint and gear joint, + and related connections such as cables and belts, it is + possible to understand a machine as an assembly of solid + parts that connect these joints called a + mechanism.[42] +

+

+ Two levers, or cranks, are combined into a planar + four-bar linkage + by attaching a link that connects the output of one crank to + the input of another. Additional links can be attached to + form a + six-bar linkage + or in series to form a robot.[42] +

+
+

Mechanical systems

+
+
+ Boulton & Watt Steam Engine +
+ The Boulton & Watt Steam Engine, 1784 +
+
+

+ A mechanical system manages + power + to accomplish a task that involves forces and movement. + Modern machines are systems consisting of (i) a power source + and + actuators that + generate forces and movement, (ii) a + system of mechanisms + that shape the actuator input to achieve a specific + application of output forces and movement, (iii) a + controller with sensors that compare the output to a + performance goal and then directs the actuator input, and + (iv) an interface to an operator consisting of levers, + switches, and displays. This can be seen in Watt's steam + engine in which the power is provided by steam expanding to + drive the piston. The walking beam, coupler and crank + transform the linear movement of the piston into rotation of + the output pulley. Finally, the pulley rotation drives the + flyball governor which controls the valve for the steam + input to the piston cylinder. +

+

+ The adjective "mechanical" refers to skill in the practical + application of an art or science, as well as relating to or + caused by movement, physical forces, properties or agents + such as is dealt with by + mechanics.[43] + Similarly Merriam-Webster Dictionary[44] + defines "mechanical" as relating to machinery or tools. +

+

+ Power flow through a machine provides a way to understand + the performance of devices ranging from levers and gear + trains to automobiles and robotic systems. The German + mechanician + Franz Reuleaux[45] + wrote, "a machine is a combination of resistant bodies so + arranged that by their means the mechanical forces of nature + can be compelled to do work accompanied by certain + determinate motion." Notice that forces and motion combine + to define + power. +

+

+ More recently, Uicker et al.[42] + stated that a machine is "a device for applying power or + changing its direction."McCarthy and Soh[46] + describe a machine as a system that "generally consists of a + power source and a + mechanism + for the controlled use of this power." +

+
+

Power sources

+
+ + + + + + + + + +
+ +
+ Diesel engine, friction clutch and gear transmission of an + automobile +
+
+
+ +
+ Early + Ganz + Electric Generator in + Zwevegem, + West Flanders, Belgium +
+
+

+ Human and animal effort were the original power sources for + early machines.[citation needed] +

+

+ Waterwheel: + Waterwheels + appeared around the world around 300 BC to use flowing water + to generate rotary motion, which was applied to + milling grain, and powering lumber, machining and textile + operations. Modern + water turbines + use water flowing through a + dam to drive an + electric generator. +

+

+ Windmill: Early + windmills + captured wind power to generate rotary motion for milling + operations. Modern + wind turbines + also drives a generator. This electricity in turn is used to + drive + motors + forming the actuators of mechanical systems. +

+

+ Engine: The word engine derives from "ingenuity" and + originally referred to contrivances that may or may not be + physical devices.[47] + A + steam engine + uses heat to boil water contained in a pressure vessel; the + expanding steam drives a piston or a turbine. This principle + can be seen in the + aeolipile of + Hero of Alexandria. This is called an + external combustion engine. +

+

+ An + automobile + engine is called an + internal combustion engine + because it burns fuel (an + exothermic + chemical reaction) inside a cylinder and uses the expanding + gases to drive a + piston. A + jet engine + uses a turbine to compress air which is burned with fuel so + that it expands through a nozzle to provide thrust to an + aircraft, and + so is also an "internal combustion engine."[48] +

+

+ Power plant: The heat from coal and natural gas + combustion in a + boiler generates + steam that drives a + steam turbine + to rotate an + electric generator. A + nuclear power plant + uses heat from a + nuclear reactor + to generate steam and + electric power. This power is distributed through a + network of transmission lines + for industrial and individual use. +

+

+ Motors: + Electric motors + use either + AC + or + DC + electric current to generate rotational movement. Electric + servomotors + are the actuators for mechanical systems ranging from + robotic systems + to + modern aircraft. +

+

+ Fluid Power: + Hydraulic + and + pneumatic + systems use electrically driven + pumps to drive water + or air respectively into cylinders to power + linear movement. +

+

+ Electrochemical: Chemicals and materials can also be + sources of power.[49] + They may chemically deplete or need re-charging, as is the + case with + batteries,[50] + or they may produce power without changing their state, + which is the case for + solar cells + and + thermoelectric generators.[51][52] + All of these, however, still require their energy to come + from elsewhere. With batteries, it is the already existing + chemical potential energy + inside.[50] + In solar cells and thermoelectrics, the energy source is + light and heat respectively.[51][52] +

+
+

Mechanisms

+
+

+ The mechanism of a mechanical system is assembled + from components called + machine elements. These elements provide structure for the system and + control its movement. +

+

+ The structural components are, generally, the frame members, + bearings, splines, springs, seals, + fasteners and + covers. The shape, texture and color of covers provide a + styling and operational interface + between the mechanical system and its users. +

+

+ The assemblies that control movement are also called "mechanisms."[45][42] + Mechanisms are generally classified as + gears and + gear trains, which includes + belt drives + and + chain drives, + cam + and + follower + mechanisms, and + linkages, though there are other special mechanisms such as + clamping linkages, + indexing mechanisms, + escapements + and friction devices such as + brakes and + clutches. +

+

+ The number of degrees of freedom of a mechanism, or its + mobility, depends on the number of links and joints and the + types of joints used to construct the mechanism. The general + mobility of a mechanism is the difference between the + unconstrained freedom of the links and the number of + constraints imposed by the joints. It is described by the + Chebychev–Grübler–Kutzbach criterion. +

+
+

Gears and gear trains

+
+
+ +
+ The + Antikythera mechanism + (main fragment) +
+
+

+ The transmission of rotation between contacting toothed + wheels can be traced back to the + Antikythera mechanism + of Greece and the + south-pointing chariot + of China. + Illustrations by the renaissance scientist + Georgius Agricola + show gear trains with cylindrical teeth. The implementation + of the + involute tooth + yielded a standard gear design that provides a constant + speed ratio. Some important features of gears and gear + trains are: +

+ +
+

+ Cam and follower mechanisms +

+
+

+ A + cam + and + follower + is formed by the direct contact of two specially shaped + links. The driving link is called the cam (also see + cam shaft) and + the link that is driven through the direct contact of their + surfaces is called the follower. The shape of the contacting + surfaces of the + cam + and + follower + determines the movement of the mechanism. +

+
+

Linkages

+
+
+ +
+ Schematic of the actuator and four-bar linkage that + position an aircraft landing gear +
+
+

+ A + linkage + is a collection of links connected by joints. Generally, the + links are the structural elements and the joints allow + movement. Perhaps the single most useful example is the + planar + four-bar linkage. However, there are many more special linkages: +

+
    +
  • + Watt's linkage + is a four-bar linkage that generates an approximate + straight line. It was critical to the operation of his + design for the steam engine. This linkage also appears in + vehicle suspensions to prevent side-to-side movement of + the body relative to the wheels. Also see the article + Parallel motion. +
    • +
  • + The success of Watt's linkage lead to the design of + similar approximate straight-line linkages, such as + Hoeken's linkage + and + Chebyshev's linkage. +
    • +
  • + The + Peaucellier linkage + generates a true straight-line output from a rotary input. +
    • +
  • + The + Sarrus linkage + is a spatial linkage that generates straight-line movement + from a rotary input. +
    • +
  • + The + Klann linkage + and the + Jansen linkage + are recent inventions that provide interesting walking + movements. They are respectively a six-bar and an + eight-bar linkage. +
    • +
+
+

Planar mechanism

+
+

+ A planar mechanism is a mechanical system that is + constrained so the trajectories of points in all the bodies + of the system lie on planes parallel to a ground plane. The + rotational axes of hinged joints that connect the bodies in + the system are perpendicular to this ground plane. +

+
+

Spherical mechanism

+
+

+ A spherical mechanism is a mechanical system in which + the bodies move in a way that the trajectories of points in + the system lie on concentric spheres. The rotational axes of + hinged joints that connect the bodies in the system pass + through the center of these circle. +

+
+

Spatial mechanism

+
+

+ A spatial mechanism is a mechanical system that has + at least one body that moves in a way that its point + trajectories are general space curves. The rotational axes + of hinged joints that connect the bodies in the system form + lines in space that do not intersect and have distinct + common normals. +

+
+

Flexure mechanisms

+
+

+ A flexure mechanism consists of a series of rigid bodies + connected by compliant elements (also known as flexure + joints) that is designed to produce a geometrically + well-defined motion upon application of a force. +

+
+

Machine elements

+
+

+ The elementary mechanical components of a machine are termed + machine elements. These elements consist of three basic types (i) + structural components such as frame members, + bearings, axles, splines, + fasteners, + seals, and lubricants, (ii) + mechanisms + that control movement in various ways such as + gear trains, + belt + or + chain drives, + linkages, + cam + and + follower + systems, including + brakes and + clutches, and + (iii) control components such as buttons, switches, + indicators, sensors, actuators and computer controllers.[53] + While generally not considered to be a machine element, the + shape, texture and color of covers are an important part of + a machine that provide a + styling and operational interface + between the mechanical components of a machine and its + users. +

+
+

Structural components

+
+

+ A number of machine elements provide important structural + functions such as the frame, bearings, splines, spring and + seals. +

+
    +
  • + The recognition that the frame of a mechanism is an + important machine element changed the name + three-bar linkage + into + four-bar linkage. Frames are generally assembled from + truss or + beam + elements. +
    • +
  • + Bearings + are components designed to manage the interface between + moving elements and are the source of + friction in + machines. In general, bearings are designed for pure + rotation or + straight line movement. +
    • +
  • + Splines + and + keys + are two ways to reliably mount an + axle to a wheel, + pulley or gear so that torque can be transferred through + the connection. +
    • +
  • + Springs + provides forces that can either hold components of a + machine in place or acts as a + suspension + to support part of a machine. +
    • +
  • + Seals + are used between mating parts of a machine to ensure + fluids, such as water, hot gases, or lubricant do not leak + between the mating surfaces. +
    • +
  • + Fasteners + such as screws, + bolts, spring clips, and + rivets are + critical to the assembly of components of a machine. + Fasteners are generally considered to be removable. In + contrast, joining methods, such as + welding, + soldering, + crimping + and the application of + adhesives, + usually require cutting the parts to disassemble the + components +
    • +
+
+

Controllers

+
+

+ Controllers combine + sensors, + logic, and + actuators to + maintain the performance of components of a machine. Perhaps + the best known is the + flyball governor + for a steam engine. Examples of these devices range from a + thermostat + that as temperature rises opens a valve to cooling water to + speed controllers such as the + cruise control + system in an automobile. The + programmable logic controller + replaced relays and specialized control mechanisms with a + programmable computer. + Servomotors + that accurately position a shaft in response to an + electrical command are the actuators that make + robotic systems + possible. +

+
+

Computing machines

+
+
+ Arithmometr computing machine +
+ The arithmometre was designed by Charles Xavier Thomas, + c. 1820, for + the four rules of arithmetic. It was manufactured + 1866–1870 AD and exhibited in the Tekniska museet, + Stockholm, Sweden. +
+
+

+ Charles Babbage + designed machines to tabulate logarithms and other functions + in 1837. His + Difference engine + can be considered an advanced + mechanical calculator + and his + Analytical Engine + a forerunner of the modern + computer, + though none of the larger designs were completed in + Babbage's lifetime. +

+

+ The + Arithmometer + and the + Comptometer + are mechanical computers that are precursors to + modern digital computers. Models used to study modern computers are termed + State machine + and + Turing machine. +

+
+

Molecular machines

+
+
+ +
+ A + ribosome is + a + biological machine + that utilizes + protein dynamics. +
+
+

+ The biological molecule + myosin reacts to + ATP and ADP to alternately engage with an actin filament and + change its shape in a way that exerts a force, and then + disengage to reset its shape, or conformation. This acts as + the molecular drive that causes muscle contraction. + Similarly the biological molecule + kinesin has two + sections that alternately engage and disengage with + microtubules causing the molecule to move along the + microtubule and transport vesicles within the cell, and + dynein, which + moves cargo inside cells towards the nucleus and produces + the axonemal beating of + motile cilia + and + flagella. "In effect, the motile cilium is a nanomachine composed + of perhaps over 600 proteins in molecular complexes, many of + which also function independently as nanomachines. + Flexible linkers + allow the + mobile protein domains + connected by them to recruit their binding partners and + induce long-range + allostery + via + protein domain dynamics. "[54] + Other biological machines are responsible for energy + production, for example + ATP synthase + which harnesses energy from + proton gradients across membranes + to drive a turbine-like motion used to synthesise + ATP, the energy currency of a cell.[55] + Still other machines are responsible for + gene expression, including + DNA polymerases + for replicating DNA,[citation needed] + RNA polymerases + for producing + mRNA,[citation needed] + the + spliceosome + for removing + introns, and the + ribosome for + synthesising proteins. These machines and their + nanoscale dynamics + are far more complex than any + molecular machines + that have yet been artificially constructed.[56] + These molecules are increasingly considered to be + nanomachines.[citation needed] +

+

+ Researchers have used DNA to construct nano-dimensioned + four-bar linkages.[57][58] +

+
+

Impact

+
+
+

+ Mechanization and automation +

+
+ +
+ Main articles: + Mechanization + and + Automation +
+
+ +
+ This water-powered + mine hoist + was used for raising ore. This woodblock is from + De re metallica + by Georg Bauer (Latinized name + Georgius Agricola, c. 1555), an + early mining textbook that contains numerous drawings and + descriptions of mining equipment. +
+
+

+ Mechanization (or mechanisation in + BE) is providing human operators with machinery that assists + them with the muscular requirements of work or displaces + muscular work. In some fields, mechanization includes the + use of hand tools. In modern usage, such as in engineering + or economics, mechanization implies machinery more complex + than hand tools and would not include simple devices such as + an un-geared horse or donkey mill. Devices that cause speed + changes or changes to or from reciprocating to rotary + motion, using means such as + gears, + pulleys or + sheaves + and belts, + shafts, + cams + and + cranks, usually are considered machines. After electrification, + when most small machinery was no longer hand powered, + mechanization was synonymous with motorized machines.[59] +

+

+ Automation is the use of + control systems + and + information technologies + to reduce the need for human work in the production of goods + and services. In the scope of + industrialization, automation is a step beyond + mechanization. Whereas mechanization provides human operators with + machinery to assist them with the muscular requirements of + work, automation greatly decreases the need for human + sensory and mental requirements as well. Automation plays an + increasingly important role in the + world economy + and in daily experience. +

+
+

Automata

+
+ +
+ Main article: + Automaton +
+

+ An automaton (plural: automata or automatons) is a + self-operating machine. The word is sometimes used to + describe a robot, + more specifically an + autonomous robot. A Toy Automaton was patented in 1863.[60] +

+
+

Mechanics

+
+

+ Usher[61] + reports that + Hero of Alexandria's + treatise on Mechanics focused on the study of lifting + heavy weights. Today + mechanics + refers to the mathematical analysis of the forces and + movement of a mechanical system, and consists of the study + of the + kinematics + and + dynamics + of these systems. +

+
+

Dynamics of machines

+
+

+ The + dynamic analysis + of machines begins with a rigid-body model to determine + reactions at the bearings, at which point the elasticity + effects are included. The + rigid-body dynamics + studies the movement of systems of interconnected bodies + under the action of external forces. The assumption that the + bodies are rigid, which means that they do not deform under + the action of applied forces, simplifies the analysis by + reducing the parameters that describe the configuration of + the system to the translation and rotation of reference + frames attached to each body.[62][63] +

+

+ The dynamics of a rigid body system is defined by its + equations of motion, which are derived using either + Newtons laws of motion + or + Lagrangian mechanics. The solution of these equations of motion defines how the + configuration of the system of rigid bodies changes as a + function of time. The formulation and solution of rigid body + dynamics is an important tool in the computer simulation of + mechanical systems. +

+
+

Kinematics of machines

+
+

+ The dynamic analysis of a machine requires the determination + of the movement, or + kinematics, of its component parts, known as kinematic analysis. The + assumption that the system is an assembly of rigid + components allows rotational and translational movement to + be modeled mathematically as + Euclidean, or rigid, transformations. This allows the position, velocity and acceleration of + all points in a component to be determined from these + properties for a reference point, and the angular position, + angular velocity + and + angular acceleration + of the component. +

+
+

Machine design

+
+

+ Machine design refers to the procedures and techniques used + to address the three phases of a + machine's lifecycle: +

+
    +
  1. + invention, which involves the identification of a need, + development of requirements, concept generation, prototype + development, manufacturing, and verification testing; +
    2. +
  2. + performance engineering involves enhancing manufacturing + efficiency, reducing service and maintenance demands, + adding features and improving effectiveness, and + validation testing; +
    3. +
  3. + recycle is the decommissioning and disposal phase and + includes recovery and reuse of materials and components. +
    4. +
+
+

See also

+
+ +
+ Main articles: + Outline of machines + and + Outline of industrial machinery +
+ +
+

References

+
+ +
+
+
    +
  1. + ^ + a + b + Usher, Abbott Payson (1988). + A History of Mechanical Inventions. USA: Courier Dover Publications. p. 98. + ISBN 978-0-486-25593-4. + Archived + from the original on 2016-08-18. +
    2. +
  2. + ^ + The American Heritage Dictionary, Second + College Edition. Houghton Mifflin Co., 1985. +
    3. +
  3. + ^ + "μηχανή" + Archived + 2011-06-29 at the + Wayback Machine, Henry George Liddell, Robert Scott, + A Greek-English Lexicon, on Perseus + project +
    4. +
  4. + ^ + "μῆχος" + Archived + 2011-06-29 at the + Wayback Machine, Henry George Liddell, Robert Scott, + A Greek-English Lexicon, on Perseus + project +
    5. +
  5. + ^ + Oxford Dictionaries, + machine +
    6. +
  6. + ^ + Karl von Langsdorf (1826) Machinenkunde, + quoted in + Reuleaux, Franz (1876). + The kinematics of machinery: Outlines of a + theory of machines. MacMillan. pp. 604. +
    7. +
  7. + ^ + Therese McGuire, Light on Sacred Stones, in + Conn, Marie A.; Therese Benedict McGuire (2007). + Not etched in stone: essays on ritual memory, + soul, and society. University Press of America. p. 23. + ISBN 978-0-7618-3702-2. +
    8. +
  8. + ^ + Dutch, Steven (1999). + "Pre-Greek Accomplishments". Legacy of the Ancient World. Prof. Steve + Dutch's page, Univ. of Wisconsin at Green Bay. + Archived from + the original + on August 21, 2016. Retrieved + March 13, 2012. +
    9. +
  9. + ^ + Moorey, Peter Roger Stuart (1999). + Ancient Mesopotamian Materials and Industries: + The Archaeological Evidence. + Eisenbrauns. + ISBN 9781575060422. +
    10. +
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    12. +
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    16. +
  16. + ^ + Woods, Michael; Mary B. Woods (2000). + Ancient Machines: From Wedges to + Waterwheels. USA: Twenty-First Century Books. p. 58. + ISBN 0-8225-2994-7. +
    17. +
  17. + ^ + Wood, Michael (2000). + Ancient Machines: From Grunts to Graffiti. Minneapolis, MN: Runestone Press. pp. 35, 36. + ISBN 0-8225-2996-3. +
    18. +
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    19. +
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    20. +
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    21. +
  21. + ^ + Strizhak, Viktor; Igor Penkov; Toivo Pappel + (2004). + "Evolution of design, use, and strength + calculations of screw threads and threaded + joints". + HMM2004 International Symposium on History of + Machines and Mechanisms. Kluwer Academic publishers. p. 245. + ISBN 1-4020-2203-4. + Archived + from the original on 2013-06-07. Retrieved + 2008-05-21. +
    22. +
  22. + ^ + Ahmad Y Hassan, + Donald Routledge Hill + (1986). + Islamic Technology: An illustrated history, + p. 54. + Cambridge University Press. + ISBN 0-521-42239-6. +
    23. +
  23. + ^ + Lucas, Adam (2006), + Wind, Water, Work: Ancient and Medieval Milling + Technology, Brill Publishers, p. 65, + ISBN 90-04-14649-0 +
    24. +
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    25. +
  25. + ^ + Shepherd, William (2011). + Electricity Generation Using Wind Power + (1 ed.). Singapore: World Scientific + Publishing Co. Pte. Ltd. p. 4. + ISBN 978-981-4304-13-9. +
    26. +
  26. + ^ + Taqi al-Din and the First Steam Turbine, 1551 + A.D. + Archived + 2008-02-18 at the + Wayback Machine, web page, accessed on line 23 October 2009; this + web page refers to + Ahmad Y Hassan + (1976), + Taqi al-Din and Arabic Mechanical Engineering, pp. 34–5, Institute for the History of Arabic + Science, + University of Aleppo. +
    27. +
  27. + ^ + Ahmad Y. Hassan + (1976), + Taqi al-Din and Arabic Mechanical Engineering, p. 34–35, Institute for the History of Arabic + Science, + University of Aleppo +
    28. +
  28. + ^ + Lakwete, Angela (2003). + Inventing the Cotton Gin: Machine and Myth in + Antebellum America. Baltimore: The Johns Hopkins University Press. + pp. 1–6. + ISBN 9780801873942. +
    29. +
  29. + ^ + Pacey, Arnold (1991) [1990]. + Technology in World Civilization: A + Thousand-Year History + (First MIT Press paperback ed.). Cambridge + MA: The MIT Press. pp. 23–24. +
    30. +
  30. + ^ + Žmolek, Michael Andrew (2013). + Rethinking the Industrial Revolution: Five + Centuries of Transition from Agrarian to + Industrial Capitalism in England. BRILL. p. 328. + ISBN 9789004251793. + The spinning jenny was basically an adaptation + of its precursor the spinning wheel +
    31. +
  31. + ^ + Koetsier, Teun (2001), "On the prehistory of + programmable machines: musical automata, looms, + calculators", Mechanism and Machine Theory, + 36 (5), Elsevier: + 589–603, + doi:10.1016/S0094-114X(01)00005-2. +
    32. +
  32. + ^ + Kapur, Ajay; Carnegie, Dale; Murphy, Jim; Long, + Jason (2017). + "Loudspeakers Optional: A history of + non-loudspeaker-based electroacoustic music". + Organised Sound. 22 (2). + Cambridge University Press: 195–205. + doi:10.1017/S1355771817000103. + ISSN 1355-7718. +
    33. +
  33. + ^ + Professor Noel Sharkey, + A 13th Century Programmable Robot (Archive), + University of Sheffield. +
    34. +
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    35. +
  35. + ^ + Stephen, Donald; Lowell Cardwell (2001). + Wheels, clocks, and rockets: a history of + technology. USA: W. W. Norton & Company. pp. 85–87. + ISBN 978-0-393-32175-3. + Archived + from the original on 2016-08-18. +
    36. +
  36. + ^ + Armstrong-Hélouvry, Brian (1991). + Control of machines with friction. USA: Springer. p. 10. + ISBN 978-0-7923-9133-3. + Archived + from the original on 2016-08-18. +
    37. +
  37. + ^ + Pennock, G. R., James Watt (1736-1819), + Distinguished Figures in Mechanism and Machine + Science, + ed. M. Ceccarelli, Springer, 2007, + ISBN 978-1-4020-6365-7 + (Print) 978-1-4020-6366-4 (Online). +
    38. +
  38. + ^ + Beck B., Roger (1999). + World History: Patterns of Interaction. + Evanston, Illinois: McDougal Littell. +
    39. +
  39. + ^ + Chambers, Ephraim (1728), "Table of Mechanicks", + Cyclopaedia, A Useful Dictionary of Arts and + Sciences, vol. 2, London, England, p. 528, + Plate 11. +
    40. +
  40. + ^ + Moon, F. C., + The Reuleaux Collection of Kinematic Mechanisms + at Cornell University, 1999 + Archived + 2015-05-18 at the + Wayback Machine +
    41. +
  41. + ^ + Hartenberg, R.S. & J. Denavit (1964) + Kinematic synthesis of linkages + Archived + 2011-05-19 at the + Wayback Machine, New York: McGraw-Hill, online link from + Cornell University. +
    42. +
  42. + ^ + a + b + c + d + J. J. Uicker, G. R. Pennock, and J. E. Shigley, + 2003, Theory of Machines and Mechanisms, + Oxford University Press, New York. +
    43. +
  43. + ^ + "mechanical". + Oxford English Dictionary + (Online ed.). Oxford University Press. (Subscription or + participating institution membership + required.) +
    44. +
  44. + ^ + Merriam-Webster Dictionary + Definition of mechanical + Archived + 2011-10-20 at the + Wayback Machine +
    45. +
  45. + ^ + a + b + Reuleaux, F., 1876 + The Kinematics of Machinery + Archived + 2013-06-02 at the + Wayback Machine + (trans. and annotated by A. B. W. Kennedy), + reprinted by Dover, New York (1963) +
    46. +
  46. + ^ + J. M. McCarthy and G. S. Soh, 2010, + Geometric Design of Linkages, + Archived + 2016-08-19 at the + Wayback Machine + Springer, New York. +
    47. +
  47. + ^ + Merriam-Webster's definition of engine +
    48. +
  48. + ^ + "Internal combustion engine", + Concise Encyclopedia of Science and Technology, Third Edition, Sybil P. Parker, ed. McGraw-Hill, + Inc., 1994, p. 998 . +
    49. +
  49. + ^ + Brett, Christopher M. A; Brett, Ana Maria + Oliveira (1993). + Electrochemistry: principles, methods, and + applications. Oxford; New York: Oxford University Press. + ISBN 978-0-19-855389-2. + OCLC 26398887. +
    50. +
  50. + ^ + a + b + Crompton, T. R. (2000-03-20). + Battery Reference Book. Elsevier. + ISBN 978-0-08-049995-6. +
    51. +
  51. + ^ + a + b + "Solar Cells -- Performance And Use". +
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  52. + ^ + a + b + Fernández-Yáñez, P.; Romero, V.; Armas, O.; + Cerretti, G. (2021-09-01). + "Thermal management of thermoelectric + generators for waste energy recovery". Applied Thermal Engineering. + 196 117291. + Bibcode:2021AppTE.19617291F. + doi:10.1016/j.applthermaleng.2021.117291. + ISSN 1359-4311. +
    53. +
  53. + ^ + Robert L. Norton, Machine Design, (4th + Edition), Prentice-Hall, 2010 +
    54. +
  54. + ^ + Satir, Peter; Søren T. Christensen (2008-03-26). + "Structure and function of mammalian cilia". Histochemistry and Cell Biology. + 129 (6): + 687–93. + doi:10.1007/s00418-008-0416-9. + PMC 2386530. + PMID 18365235. 1432-119X. +
    55. +
  55. + ^ + Kinbara, Kazushi; Aida, Takuzo (2005-04-01). + "Toward Intelligent Molecular Machines: Directed + Motions of Biological and Artificial Molecules and + Assemblies". Chemical Reviews. + 105 (4): + 1377–1400. + Bibcode:2005ChRv..105.1377K. + doi:10.1021/cr030071r. + ISSN 0009-2665. + PMID 15826015. +
    56. +
  56. + ^ + Bu Z, Callaway DJ (2011). "Proteins MOVE! Protein + dynamics and long-range allostery in cell + signaling". Protein Structure and Diseases. + Advances in Protein Chemistry and Structural + Biology. Vol. 83. pp. 163–221. + doi:10.1016/B978-0-12-381262-9.00005-7. + ISBN 9780123812629. + PMID 21570668. +
    57. +
  57. + ^ + Marras, A., Zhou, L., Su, H., and Castro, C.E. + Programmable motion of DNA origami mechanisms, + Proceedings of the National Academy of Sciences, + 2015 + Archived + 2017-08-04 at the + Wayback Machine +
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  58. + ^ + McCarthy, C, DNA Origami Mechanisms and Machines + | Mechanical Design 101, 2014 + Archived + 2017-09-18 at the + Wayback Machine +
    59. +
  59. + ^ + Jerome (1934) gives the industry classification of + machine tools as being "other than hand power". + Beginning with the 1900 U.S. census, power use was + part of the definition of a factory, distinguishing + it from a workshop. +
    60. +
  60. + ^ + "U.S. Patent and Trademark Office, Patent# + 40891, Toy Automaton". + Google Patents. Retrieved + 2007-01-07. +
    61. +
  61. + ^ + A. P. Usher, 1929, + A History of Mechanical Inventions + Archived + 2013-06-02 at the + Wayback Machine, Harvard University Press (reprinted by Dover + Publications 1968). +
    62. +
  62. + ^ + B. Paul, Kinematics and Dynamics of Planar + Machinery, Prentice-Hall, NJ, 1979 +
    63. +
  63. + ^ + L. W. Tsai, Robot Analysis: The mechanics of serial + and parallel manipulators, John-Wiley, NY, + 1999. +
    64. +
+
+
+
+

Further reading

+
+
    +
  • + Oberg, Erik; Franklin D. Jones; Holbrook L. Horton; + Henry H. Ryffel (2000). Christopher J. McCauley; + Riccardo Heald; Muhammed Iqbal Hussain (eds.). + Machinery's Handbook + (26th ed.). New York: Industrial Press Inc. + ISBN 978-0-8311-2635-3. +
    • +
  • + Reuleaux, Franz (1876). + The Kinematics of Machinery. Trans. and annotated + by A. B. W. Kennedy. New York: reprinted by Dover + (1963). +
    • +
  • + Uicker, J. J.; G. R. Pennock; J. E. Shigley (2003). + Theory of Machines and Mechanisms. New York: + Oxford University Press. +
    • +
+
    +
  • + Oberg, Erik; Franklin D. Jones; Holbrook L. Horton; + Henry H. Ryffel (2000). Christopher J. McCauley; + Riccardo Heald; Muhammed Iqbal Hussain (eds.). + Machinery's Handbook (30th ed.). New York: + Industrial Press Inc. + ISBN 9780831130992. +
    • +
+
+ +
+
    +
  • + + Media related to + Machines + at Wikimedia Commons +
    • +
  • + + Quotations related to + Machine + at Wikiquote +
    • +
  • + Reuleaux Collection of Mechanisms and Machines + – Cornell University +
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+
+ +
+ + + + diff --git a/humans.txt b/humans.txt new file mode 100644 index 0000000..040a3b3 --- /dev/null +++ b/humans.txt @@ -0,0 +1,8 @@ +/* TEAM */ +Maintainer: Ruben Beltran del Rio +Site: contact@r.bdr.sh +Mastodon: https://friendship.quest/@ruben +From: Berlin, Germany + +/* SITE */ +Language: English diff --git a/images/Chain Link.svg b/images/Chain Link.svg new file mode 100644 index 0000000..fb10b11 --- /dev/null +++ b/images/Chain Link.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Grater Bed.svg b/images/Grater Bed.svg new file mode 100644 index 0000000..303ef87 --- /dev/null +++ b/images/Grater Bed.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Grater Blade.svg b/images/Grater Blade.svg new file mode 100644 index 0000000..0176a97 --- /dev/null +++ b/images/Grater Blade.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Green Lit Light.svg b/images/Green Lit Light.svg new file mode 100644 index 0000000..f786d65 --- /dev/null +++ b/images/Green Lit Light.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Green Unlit Light.svg b/images/Green Unlit Light.svg new file mode 100644 index 0000000..9d1d96a --- /dev/null +++ b/images/Green Unlit Light.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Lever Back.svg b/images/Lever Back.svg new file mode 100644 index 0000000..8e3c8dd --- /dev/null +++ b/images/Lever Back.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Lever Front.svg b/images/Lever Front.svg new file mode 100644 index 0000000..3794a8f --- /dev/null +++ b/images/Lever Front.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Lever Handle.svg b/images/Lever Handle.svg new file mode 100644 index 0000000..e998c9c --- /dev/null +++ b/images/Lever Handle.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Metal Panel.svg b/images/Metal Panel.svg new file mode 100644 index 0000000..4308210 --- /dev/null +++ b/images/Metal Panel.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Red Lit Light.svg b/images/Red Lit Light.svg new file mode 100644 index 0000000..2ae5c20 --- /dev/null +++ b/images/Red Lit Light.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Red Unlit Light.svg b/images/Red Unlit Light.svg new file mode 100644 index 0000000..77ddec3 --- /dev/null +++ b/images/Red Unlit Light.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Sausage.svg b/images/Sausage.svg new file mode 100644 index 0000000..d38f015 --- /dev/null +++ b/images/Sausage.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/Wheel.svg b/images/Wheel.svg new file mode 100644 index 0000000..4e7d2f3 --- /dev/null +++ b/images/Wheel.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/images/favicon.png b/images/favicon.png new file mode 100644 index 0000000000000000000000000000000000000000..e8135a79bbca9e9fe7a936b1e8307205605576f0 GIT binary patch literal 355 zcmV-p0i6DcP)S5CGum=1&vNA0}cNZ4| zR#H>wp>x?~XFg^YMtpsHfqg=RJp*m7E#1&8X}dzQEKNmq(9-)ilgIJozH6bsM+sAw?#jw58{C)mKpb_w?aIh?$fo)5YGjO#m z4l@Qj04K>J!K&+>*>?_#7Adafw*b)fD#+xKe>sFS_$(-E1dK2Ol%IJxONl1pk2or- zcSg9YWb5F&ba?Os00960)=7}d00006Nkl + + + + + + + + + + Internet Machine. + + + + + + + + + +
+ + + + diff --git a/js/machine.js b/js/machine.js new file mode 100644 index 0000000..e7dcdc8 --- /dev/null +++ b/js/machine.js @@ -0,0 +1,569 @@ +// Constants /////////////////////////////////////////////////////////////////// +const kDimensions = { + wheelSize: 96, + leverWidth: 98, + sausageHeight: 48, +}; +const kState = { + waiting: "waiting", + readyToGrate: "readyToGrate", + readyToLoad: "readyToLoad", +}; +const kAction = { + completeLoading: Symbol("completeLoading"), + startPullingLever: Symbol("startPullingLever"), + stopPullingLever: Symbol("stopPullingLever"), + pullLever: Symbol("pullLever"), + startTurningWheel: Symbol("startTurningWheel"), + stopTurningWheel: Symbol("stopTurningWheel"), + turnWheel: Symbol("turnWheel"), + setIsWaitingForFrame: Symbol("setIsWaitingForFrame"), + createSausage: Symbol("createSausage"), + completeGrating: Symbol("completeGrating"), +}; +const kRotationDirection = { + clockwise: Symbol("clockwise"), + counterClockwise: Symbol("counterClockwise"), +}; +const kPullDirection = { + right: Symbol("right"), + left: Symbol("left"), +}; + +// Configuration /////////////////////////////////////////////////////////////// +const configuration = { + wheelStrength: 1, + maxLoad: 100, + leverTravel: 80.72, + graterTravel: 69, + chainSpeed: 0.5, + grateStrength: 0.01, + defaultUrl: "/wiki/Machine", +}; + +// App State /////////////////////////////////////////////////////////////////// +/** + * The main app state + */ +let appState = null; + +/** + * Functions to handle side effects: Creation or removal of HTML elements, + * actions that occur as a result of a change in state. + */ +const middleware = [ + /** + * Makes text unselectable while we move the lever or wheel. + */ + function disableSelect(_, action) { + if ( + action === kAction.startTurningWheel || + action === kAction.startPullingLever + ) { + document.querySelector(".machine")?.classList.add("no-select"); + } + }, + + /** + * Makes text selectable when we're done moving the lever or wheel. + */ + function enableSelect(_, action) { + if ( + action === kAction.stopTurningWheel || + action === kAction.stopPullingLever + ) { + document.querySelector(".machine")?.classList.remove("no-select"); + } + }, + + /** + * Cleans up the old iFrames when we load the new one, and triggers a complete. + */ + function completeLoading(state, action) { + if ( + action === kAction.turnWheel && + state.currentState === kState.readyToLoad && + parseFloat(state.load) >= configuration.maxLoad + ) { + const iframes = $iframeContainer.querySelectorAll("iframe"); + for (const iframe of iframes) { + if (iframe !== appState.currentIframe) { + $iframeContainer.removeChild(iframe); + } + } + send(kAction.completeLoading); + } + }, + + /** + * Sets the individual load state to the current iframe. + */ + function updateIframe(state, action) { + if ( + action === kAction.turnWheel && + state.currentState === kState.readyToLoad && + parseFloat(state.load) <= configuration.maxLoad + ) { + state.currentIframe?.style.setProperty( + "--loadProgress", + `${100 - state.load}vh`, + ); + } + }, + + /** + * Cleans up the sausage and loads the iframe once the grating is complete. + */ + function completeGrating(state, action) { + if ( + action === kAction.pullLever && + state.currentState === kState.readyToGrate && + parseFloat(state.grateLevel) >= kDimensions.sausageHeight + ) { + removeSausages(); + const $iframe = loadIframe(state.currentUrl, 0); + send(kAction.completeGrating, { iframe: $iframe }); + } + }, + + /** + * Creates the sausage element if we are at the right state. + */ + function createSausageIfWaiting(state, action, data) { + if ( + action === kAction.createSausage && + state.currentState === kState.waiting + ) { + createSausage(data.href, data.label); + } + }, +]; + +/** + * We store the state as CSS variables and data attributes in an element + * declared as the $stateContainer. UI updates as a result of this. We + * try to avoid manipulating the elements with JS, except for creating and + * removing elements. + */ +const $stateContainer = document.querySelector(".machine"); +const updateState = function updateState(state) { + for (const [key, value] of Object.entries(state)) { + $stateContainer.style.setProperty(`--${key}`, value); + $stateContainer.dataset[key] = value; + } + appState = state; +}; + +/** + * We modify a copy of the state and return it. + */ +const reduce = function reduce(stateReference, action, data) { + let state = Object.assign({}, stateReference); + + switch (action) { + case kAction.turnWheel: + state.wheelRotation = `${data.angle}rad`; + if (state.currentState === kState.readyToLoad) { + const sign = data.direction === kRotationDirection.clockwise ? 1 : -1; + const load = Math.max( + Math.min( + state.load - sign * data.magnitude * configuration.wheelStrength, + configuration.maxLoad, + ), + 0, + ); + state.load = load; + if (load < configuration.maxLoad && load > 0) { + const chainOffset = + parseFloat(state.chainOffset) + + sign * data.magnitude * configuration.chainSpeed; + state.chainOffset = `${chainOffset}%`; + } + } + break; + case kAction.pullLever: + const diff = Math.abs(state.leverTravel - data.magnitude); + state.leverTravel = data.magnitude; + const rotation = (data.magnitude * configuration.leverTravel) / 100; + state.leverRotation = `${rotation}deg`; + const gratingTravel = (data.magnitude * configuration.graterTravel) / 100; + state.graterTravel = `${gratingTravel}px`; + if (state.currentState === kState.readyToGrate) { + const grateLevel = Math.min( + parseFloat(state.grateLevel) + diff * configuration.grateStrength, + kDimensions.sausageHeight, + ); + state.grateLevel = `${grateLevel}px`; + } + break; + case kAction.createSausage: + state.currentUrl = data.href; + state.grateLevel = "0%"; + state.currentState = kState.readyToGrate; + break; + case kAction.startTurningWheel: + state.isTurningWheel = true; + break; + case kAction.stopTurningWheel: + state.isTurningWheel = false; + break; + case kAction.startPullingLever: + state.isPullingLever = true; + break; + case kAction.stopPullingLever: + state.isPullingLever = false; + break; + case kAction.completeLoading: + state.currentState = kState.waiting; + state.currentIframe = null; + state.load = 0; + break; + case kAction.completeGrating: + state.currentState = kState.readyToLoad; + state.currentIframe = data.iframe; + state.grateLevel = "0%"; + state.load = 0; + break; + } + + return state; +}; + +/** + * The main mechanism for view changes to trigger updates. + * It receives an action and its payload. + * It queues the middleware to run after this. + */ +const send = function send(action, data) { + const state = Object.assign({}, appState); + for (const m of middleware) { + setTimeout(() => m(state, action, data), 0); + } + const newState = reduce(state, action, data); + updateState(newState); +}; + +// Initializzation ///////////////////////////////////////////////////////////// + +/** + * Initializes state and events. + */ +const initialize = function initialize() { + const state = { + currentState: kState.waiting, + isPullingLever: false, + isTurningWheel: false, + leverTravel: 0, + grateLevel: 0, + leverRotation: "0deg", + graterTravel: "0rem", + wheelRotation: "0deg", + chainOffset: "0%", + load: 0, + }; + updateState(state); + + // Reset interaction with widgets if we lift a mouse button. + document.addEventListener("mouseup", () => { + send(kAction.stopTurningWheel); + send(kAction.stopPullingLever); + }); + + // The lever handle initiates interactions with the lever. + document + .querySelector(".lever .handle") + ?.addEventListener("mousedown", () => { + send(kAction.startPullingLever); + }); + + // The wheel handle initiates interactions with the wheel. + document + .querySelector(".wheel .handle") + ?.addEventListener("mousedown", () => { + send(kAction.startTurningWheel); + }); + + // Rotation is calculated relatively to the whole wheel. + // And travel based no the full arc of the lever + const $wheel = document.querySelector(".wheel"); + const $lever = document.querySelector(".lever"); + document.addEventListener("mousemove", (event) => { + if (appState.isTurningWheel && !appState.waitingForFrame) { + requestAnimationFrame(() => { + const elementPosition = $wheel.getBoundingClientRect(); + const x = event.clientX - elementPosition.left; + const y = event.clientY - elementPosition.top; + const angle = angleFromCenter( + x, + y, + kDimensions.wheelSize, + kDimensions.wheelSize, + ); + const oldAngle = parseFloat(appState.wheelRotation); + const { direction, magnitude } = rotationDirection(oldAngle, angle); + send(kAction.turnWheel, { angle, direction, magnitude }); + send(kAction.setIsWaitingForFrame, { state: false }); + }); + send(kAction.setIsWaitingForFrame, { state: true }); + } + if (appState.isPullingLever && !appState.waitingForFrame) { + requestAnimationFrame(() => { + const elementPosition = $lever.getBoundingClientRect(); + const x = event.clientX - elementPosition.left; + const magnitude = Math.max( + Math.min((x * 100) / kDimensions.leverWidth, 100), + 0, + ); + const direction = + magnitude >= appState.leverTravel + ? kPullDirection.right + : kPullDirection.left; + send(kAction.pullLever, { magnitude, direction }); + send(kAction.setIsWaitingForFrame, { state: false }); + }); + send(kAction.setIsWaitingForFrame, { state: true }); + } + }); + + // The URL Grater is the drop area. + const $grater = document.querySelector(".grater-bed"); + $grater.addEventListener("dragenter", (event) => { + event.preventDefault(); + if (appState.currentState === kState.waiting) { + $grater.classList.add("drag-over"); + } + }); + $grater.addEventListener("dragover", (event) => event.preventDefault()); + $grater.addEventListener("dragleave", (event) => { + if (!$grater.contains(event.relatedTarget)) { + $grater.classList.remove("drag-over"); + } + }); + $grater.addEventListener("drop", (event) => { + event.preventDefault(); + if (appState.currentState !== kState.waiting) { + return; + } + const href = event.dataTransfer.getData("text/uri-list"); + const label = event.dataTransfer.getData("text/plain"); + $grater.classList.remove("drag-over"); + send(kAction.createSausage, { href, label }); + }); + + const params = new URLSearchParams(window.location.search); + const urlFromQuery = params.get("url"); + const url = urlFromQuery ?? configuration.defaultUrl; + loadIframe(url, 100); +}; + +// Utility Functions /////////////////////////////////////////////////////////// + +/** + * Calculates the angle of a point (x,y) relative to the center of a square + * with dimensions (w, h). The result is in radians. + */ +const angleFromCenter = function angleFromCenter(x, y, w, h) { + const centerX = w / 2; + const centerY = h / 2; + const dx = x - centerX; + const dy = y - centerY; + return Math.atan2(dy, dx); +}; + +/** + * Given two angles, calculates the direction of the rotation. + */ +const rotationDirection = function rotationDirection(angle1, angle2) { + let diff = angle2 - angle1; + + if (diff > Math.PI) diff -= 2 * Math.PI; + if (diff < -Math.PI) diff += 2 * Math.PI; + + const magnitude = Math.abs(diff); + const direction = + diff > 0 + ? kRotationDirection.counterClockwise + : kRotationDirection.clockwise; + + return { + direction, + magnitude, + }; +}; + +/** + * Loads an iframe and appends it into the body. + */ +const $iframeContainer = document.querySelector(".web-content"); +const loadIframe = function loadIframe(url, loadProgress) { + const $iframe = document.createElement("iframe"); + $iframe.src = `/proxy?url=${encodeURIComponent(url)}`; + $iframe.style.setProperty("--loadProgress", `${100 - loadProgress}vh`); + $iframeContainer.appendChild($iframe); + + $iframe.addEventListener("load", () => { + const iframeDocument = $iframe.contentDocument; + + iframeDocument.querySelectorAll("a").forEach(($link) => { + $link.addEventListener("click", (event) => event.preventDefault()); + $link.draggable = true; + $link.addEventListener("dragstart", (event) => { + event.dataTransfer.setData("text/uri-list", $link.href); + event.dataTransfer.setData("text/plain", $link.textContent.trim()); + const ghost = $link.cloneNode(true); + ghost.style.background = "url('/images/Sausage.svg')"; + ghost.style.backgroundRepeat = "no-repeat"; + ghost.style.cursor = "grabbing"; + ghost.style.display = "block"; + ghost.style.height = "3rem"; + ghost.style.width = "8.125rem"; + ghost.style.color = "#fff"; + ghost.style.textAlign = "center"; + ghost.style.fontSize = "0.625rem"; + ghost.style.fontFamily = "sans-serif"; + ghost.style.textTransform = "uppercase"; + ghost.style.paddingTop = "1rem"; + + document.body.appendChild(ghost); + event.dataTransfer.setDragImage(ghost, 10, 10); + }); + }); + }); + + return $iframe; +}; + +/** + * Creates a sausage link for grating. + */ +const createSausage = function createSausage(href, label) { + const $sausage = document.createElement("article"); + $sausage.classList.add("sausage"); + $sausage.dataset.href = href; + $sausage.innerText = label; + const $graterBed = document.querySelector(".grater-bed"); + $graterBed?.appendChild($sausage); +}; + +/** + * Removes a completely grated sausage link. + */ +const removeSausages = function removeSausages() { + const $graterBed = document.querySelector(".grater-bed"); + const $existingSausages = $graterBed.querySelectorAll(".sausage"); + for (const $existingSausage of $existingSausages) { + $graterBed?.removeChild($existingSausage); + } +}; + +initialize(); + +// MOBILE CHEESE SYSTEM +let mobileState = { href: null, label: null, isDragging: false }; + +window.addEventListener('message', (e) => { + if (e.data.type === 'linkTapped') { + mobileState.href = e.data.href; + mobileState.label = e.data.label; + + const cheese = document.createElement('div'); + cheese.textContent = '🧀'; + cheese.style.position = 'fixed'; + cheese.style.fontSize = '3rem'; + cheese.style.zIndex = '10000'; + cheese.style.left = '50%'; + cheese.style.top = '50%'; + cheese.style.transform = 'translate(-50%, -50%)'; + document.body.appendChild(cheese); + + cheese.addEventListener('touchstart', () => { mobileState.isDragging = true; }); + + let lastCheese = cheese; + document.addEventListener('touchmove', (e2) => { + if (!mobileState.isDragging) return; + const t = e2.touches[0]; + lastCheese.style.left = t.clientX + 'px'; + lastCheese.style.top = t.clientY + 'px'; + }, { passive: false }); + + document.addEventListener('touchend', (e2) => { + if (!mobileState.isDragging) return; + mobileState.isDragging = false; + lastCheese.remove(); + + if (mobileState.href) { + const sausage = document.createElement('button'); + sausage.textContent = mobileState.label; + sausage.style.cssText = ` + position: fixed; + bottom: 50px; + left: 50%; + transform: translateX(-50%); + padding: 14px 28px; + background: linear-gradient(180deg, #ff5555 0%, #dd0000 50%, #bb0000 100%); + color: white; + border: 4px solid #ffdd00; + border-radius: 50px; + font-size: 16px; + font-weight: bold; + z-index: 99999; + cursor: pointer; + box-shadow: 0 6px 20px rgba(0,0,0,0.4), inset 0 2px 8px rgba(255,255,255,0.3); + max-width: 85%; + overflow: hidden; + text-overflow: ellipsis; + white-space: nowrap; + `; + + sausage.addEventListener('click', async () => { + const grater = document.querySelector('.grater-bed'); + const machine = document.querySelector('[class*="machine"]') || document.querySelector('body > div'); + const levers = document.querySelectorAll('.lever'); + const cheeses = document.querySelectorAll('div[style*="font-size: 3rem"]'); + + if (grater) grater.style.animation = 'grind 0.12s ease-in-out 6'; + if (machine && machine !== document.body) machine.style.animation = 'shake 0.1s ease-in-out 6'; + + // Animate levers - pull/push them + levers.forEach((lever, index) => { + lever.style.animation = 'pump 0.15s ease-in-out 6'; + // Also transform them to actually move + const handle = lever.querySelector('.handle'); + if (handle) { + handle.style.animation = index === 0 ? 'pullPush 0.15s ease-in-out 6' : 'rotateWheel 0.15s ease-in-out 6'; + } + }); + + cheeses.forEach(cheese => { cheese.style.animation = 'bounceGrate 0.2s ease-in-out 6'; }); + + await new Promise(r => setTimeout(r, 750)); + + if (grater) grater.style.animation = ''; + if (machine) machine.style.animation = ''; + levers.forEach(lever => { lever.style.animation = ''; }); + cheeses.forEach(cheese => { cheese.style.animation = ''; }); + + const url = `${window.location.origin}/proxy?url=${encodeURIComponent(mobileState.href)}`; + document.querySelector('.web-content').innerHTML = ``; + sausage.remove(); + }); + + if (!document.getElementById('grind-animations')) { + const style = document.createElement('style'); + style.id = 'grind-animations'; + style.innerHTML = ` + @keyframes grind { 0% { transform: rotateZ(-3deg); } 25% { transform: rotateZ(3deg); } 50% { transform: rotateZ(-3deg); } 75% { transform: rotateZ(3deg); } 100% { transform: rotateZ(-3deg); } } + @keyframes bounceGrate { 0% { transform: translateY(0) scale(1); } 50% { transform: translateY(-5px) scale(1.05); } 100% { transform: translateY(0) scale(1); } } + @keyframes shake { 0% { transform: translateX(0); } 25% { transform: translateX(-2px); } 50% { transform: translateX(2px); } 75% { transform: translateX(-2px); } 100% { transform: translateX(0); } } + @keyframes pump { 0% { transform: rotateZ(0deg); } 25% { transform: rotateZ(-15deg); } 50% { transform: rotateZ(0deg); } 75% { transform: rotateZ(-15deg); } 100% { transform: rotateZ(0deg); } } + @keyframes pullPush { 0% { transform: translateY(0); } 25% { transform: translateY(20px); } 50% { transform: translateY(0); } 75% { transform: translateY(20px); } 100% { transform: translateY(0); } } + @keyframes rotateWheel { 0% { transform: rotate(0deg); } 25% { transform: rotate(90deg); } 50% { transform: rotate(0deg); } 75% { transform: rotate(90deg); } 100% { transform: rotate(0deg); } } + `; + document.head.appendChild(style); + } + + document.body.appendChild(sausage); + } + }, { passive: false }); + } +}); diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 0000000..e21d962 --- /dev/null +++ b/requirements.txt @@ -0,0 +1 @@ +# No external dependencies - uses Python 3 stdlib only diff --git a/server.py b/server.py new file mode 100644 index 0000000..e4618e6 --- /dev/null +++ b/server.py @@ -0,0 +1,104 @@ +#!/usr/bin/env python3 +from http.server import HTTPServer, SimpleHTTPRequestHandler +from urllib.parse import urlparse, parse_qs +import urllib.request +import os +import re + +# Whitelist of allowed domains +ALLOWED_DOMAINS = [ + 'en.wikipedia.org', + 'wikipedia.org', + 'example.com', + 'github.com', + 'www.github.com', +] + +class Handler(SimpleHTTPRequestHandler): + def do_GET(self): + if self.path.startswith('/proxy?'): + qs = urlparse(self.path).query + params = parse_qs(qs) + if 'url' not in params: + self.send_error(400) + return + + url = params['url'][0] + + # Security: Validate URL + try: + parsed = urlparse(url) + + # Block dangerous schemes + if parsed.scheme not in ('http', 'https'): + self.send_error(403, 'Invalid URL scheme') + return + + # Block localhost/private IPs + hostname = parsed.hostname or '' + if hostname in ('localhost', '127.0.0.1', '::1') or hostname.startswith('192.168.') or hostname.startswith('10.'): + self.send_error(403, 'Local network access blocked') + return + + # Check whitelist (optional - comment out to allow all) + # if not any(hostname.endswith(domain) for domain in ALLOWED_DOMAINS): + # self.send_error(403, 'Domain not whitelisted') + # return + + except Exception as e: + self.send_error(400, 'Invalid URL') + return + + try: + req = urllib.request.Request(url, headers={ + 'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X)', + 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', + 'Accept-Language': 'en-US,en;q=0.5' + }) + response = urllib.request.urlopen(req, timeout=30) + data = response.read(1000000).decode('utf-8', errors='ignore') + + # Add base tag for relative URLs + base_tag = f'' + if '' in data: + data = data.replace('', f'{base_tag}', 1) + else: + data = f'{base_tag}' + data + + # Inject click handler + script = '''''' + + if '' in data: + data = data.replace('', script + '', 1) + else: + data += script + + self.send_response(200) + self.send_header('Content-Type', 'text/html; charset=utf-8') + self.send_header('X-Frame-Options', 'ALLOWALL') + self.end_headers() + self.wfile.write(data.encode('utf-8')) + except Exception as e: + self.send_error(500) + return + + super().do_GET() + + def log_message(self, *args): + pass + +if __name__ == '__main__': + os.chdir('/tmp/machine.unlimited.pizza') + HTTPServer(('127.0.0.1', 9001), Handler).serve_forever()