From 2e1dee09360e8873e25b83c2f7bc60f711bf7092 Mon Sep 17 00:00:00 2001 From: Brad Bambara Date: Wed, 18 Apr 2018 17:49:09 -0400 Subject: [PATCH] Adding 'flow' example to anypixel frontend. --- frontend/examples/flow/.gitignore | 22 ++++ frontend/examples/flow/LICENSE | 191 ++++++++++++++++++++++++++++ frontend/examples/flow/README.md | 15 +++ frontend/examples/flow/package.json | 13 ++ frontend/examples/flow/src/app.js | 157 +++++++++++++++++++++++ 5 files changed, 398 insertions(+) create mode 100644 frontend/examples/flow/.gitignore create mode 100644 frontend/examples/flow/LICENSE create mode 100644 frontend/examples/flow/README.md create mode 100644 frontend/examples/flow/package.json create mode 100644 frontend/examples/flow/src/app.js diff --git a/frontend/examples/flow/.gitignore b/frontend/examples/flow/.gitignore new file mode 100644 index 0000000..571ef49 --- /dev/null +++ b/frontend/examples/flow/.gitignore @@ -0,0 +1,22 @@ +# OS X +.DS_Store* +Icon? +._* + +# Windows +Thumbs.db +ehthumbs.db +Desktop.ini + +# Linux +.directory +*~ + +# npm +node_modules +*.log +*.gz + +# Build +index.js +package-lock.json diff --git a/frontend/examples/flow/LICENSE b/frontend/examples/flow/LICENSE new file mode 100644 index 0000000..f78bcc2 --- /dev/null +++ b/frontend/examples/flow/LICENSE @@ -0,0 +1,191 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. 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All Rights Reserved. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. \ No newline at end of file diff --git a/frontend/examples/flow/README.md b/frontend/examples/flow/README.md new file mode 100644 index 0000000..61b626f --- /dev/null +++ b/frontend/examples/flow/README.md @@ -0,0 +1,15 @@ +# Anypixel-Flow +by Brad Bambara + +An display where each pixel slowly rotates through the color spectrum. This example is built with the Anypixel Framework. + +To build it: +```sh +$ npm install +$ npm run build +``` + +To run it, you'll need to install the [previewer app](#) first. Then in the app's root directory, do: +```sh +preview +``` diff --git a/frontend/examples/flow/package.json b/frontend/examples/flow/package.json new file mode 100644 index 0000000..c01d6d7 --- /dev/null +++ b/frontend/examples/flow/package.json @@ -0,0 +1,13 @@ +{ + "name": "getting-started", + "version": "1.0.0", + "description": "", + "main": "./index.js", + "scripts": { + "build": "browserify -d src/app.js > index.js", + "postinstall": "npm run build" + }, + "dependencies": { + "anypixel": "^1.0.0" + } +} diff --git a/frontend/examples/flow/src/app.js b/frontend/examples/flow/src/app.js new file mode 100644 index 0000000..7e9a5a5 --- /dev/null +++ b/frontend/examples/flow/src/app.js @@ -0,0 +1,157 @@ +/** + * Copyright 2016 Google Inc. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/license-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the license. + */ + +var anypixel = require('anypixel'); +var canvas = anypixel.canvas; +var ctx = canvas.getContext2D(); + +// Constant controls speed of the overall 'flow' +const scrollSpeedMultiplier = 0.5; + +// Constant controls speed of the color change when touching the buttons +const touchSpeedMultiplier = 20; + +// Array holds the color values for each pixel. Values are run through `colorForPercent`. +var colorArr; + +// The color on the leading edge +var leadingColor; + +// Array holds a boolean state for each button/pixel. Boolean indicates if button is pressed. +var buttonStates; + +// Icon is the Google logo +const iconWidth = 91; +const iconHeight = 30; +const icon = [ + 0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.6,0.6,0.7,0.7,0.7,0.6,0.6,0.6,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0, + 0.0,0.0,0.0,0.0,0.0,0.0,0.6,0.7,0.7,0.7,0.7,0.7,0.7,0.7,0.7,0.7,0.7,0.6,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.6,0.7,0.7,0.6,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0, + 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{ + if (percent > 1) { + percent = percent - Math.round(percent); + } else if (percent < 0) { + percent = 1 + (percent - Math.round(percent)); + } + return "hsl("+(percent*360)+", 100%, 50%)"; +} + +document.addEventListener('onButtonDown', function(event) { + // Update which pixels are touched + var index = event.detail.x*ctx.canvas.clientHeight+event.detail.y; + buttonStates[index] = true; +}); + +document.addEventListener('onButtonUp', function(event) { + // Update which pixels are touched + var index = event.detail.x*ctx.canvas.clientHeight+event.detail.y; + buttonStates[index] = false; +}); + +document.addEventListener('DOMContentLoaded', function() { + // Initial set up: assign the colors of the spectrum. + colorArr = new Array(); + buttonStates = new Array(); + var width = ctx.canvas.clientWidth; + var height = ctx.canvas.clientHeight; + for(var i = 0; i < width; i++) { + leadingColor = i/width; + for(var j = 0; j < height; j++) { + colorArr.push(leadingColor); + buttonStates.push(false); + } + } + window.requestAnimationFrame(update); +}, false); + +function update(t) { + + var width = ctx.canvas.clientWidth; + var height = ctx.canvas.clientHeight; + var increment = (1/width)*scrollSpeedMultiplier; + leadingColor += increment; + + //iterate over all color values and update + var leadingEdge = width-1; + var iconOffsetX = Math.round((width-iconWidth)/2); + var iconOffsetY = Math.round((height-iconHeight)/2); + for(var i = 0; i < width; i++) { + for(var j = 0; j < height; j++) { + var index = i*height+j; + if (buttonStates[index]) { + // This pixel is being pressed + colorArr[index] = colorArr[index] - increment*touchSpeedMultiplier; + } else { + // This pixel is not being pressed + if (i == leadingEdge) { + // This pixel is on the leading edge + colorArr[index] = leadingColor; + } else { + // This pixel is not on the edge + var nextRowIndex = index+height; + colorArr[index] = colorArr[nextRowIndex]; + } + } + // Change the color if this pixel is part of the icon + var colorVal = colorArr[index]; + colorVal += iconValue(i-iconOffsetX, j-iconOffsetY); + + // Set the color to be the value from the color array, passed through `colorForPercent`. + ctx.fillStyle = colorForPercent(colorVal); + ctx.fillRect(i,j,1,1); + } + } + window.requestAnimationFrame(update); +}