2019-07-04 09:09:19 +02:00
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<!doctype html>
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>PIXI Stylus</title>
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<link rel="stylesheet" href="../3rdparty/highlight/styles/default.css">
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<link rel="stylesheet" href="../../css/doctest.css">
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<script src="../3rdparty/highlight/highlight.pack.js"></script>
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<script src="../../dist/iwmlib.3rdparty.js"></script>
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<script src="../../dist/iwmlib.js"></script>
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<script src="../../dist/iwmlib.pixi.js"></script>
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</head>
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<body onload="Doctest.run()">
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<h1>Stylus</h1>
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<p>The Stylus class extends the PIXI.Graphics class and allows to draw into
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a graphics object. Select the pen tool in the following example app and draw into the canvas.
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</p>
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<canvas id="canvas" style="border: 1px solid gray; width: 640px; height: 480px;" class="interactive"></canvas>
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<p>
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What you should see: A blank sytlus canvas.
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</p>
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<script class="doctest">
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class StylusApp extends PIXIApp {
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sceneFactory() {
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return new Stylus(this.renderer)
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}
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setup() {
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let buttonColor = 0x666666
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super.setup()
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this.tools = new ButtonGroup({
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type: 'checkbox',
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margin: 0,
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x: 16,
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y: 16,
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fill: buttonColor,
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buttons: [{
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icon: 'edit',
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iconColorActive: 0xFFFF00,
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action: (event, button) => this.toggleEditMode()
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},
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{
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icon: 'undo',
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action: (event, button) => this.undo(button)
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},
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{
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icon: 'redo',
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action: (event, button) => this.redo(button)
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},
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{
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icon: 'delete',
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action: (event, button) => this.clear(button)
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}
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]
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})
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this.scene.addChild(this.tools)
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let defaults = {
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icon: 'brightness_1',
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action: (event, button) => this.selectColor(button),
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fillAlpha: 0,
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strokeAlpha: 0,
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fillActiveAlpha: 0,
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strokeActiveAlpha: 0
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}
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this.palette = new ButtonGroup({
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type: "radio",
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x: 200,
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y: 16,
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margin: 0,
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strokeAlpha: 0,
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fill: buttonColor,
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buttons: [
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Object.assign({}, defaults, {
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iconColor: 0x111111,
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iconColorActive: 0x111111
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}), // tooltip: "Black",
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Object.assign({}, defaults, {
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iconColor: 0xFFFF00,
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iconColorActive: 0xFFFF00
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}), // tooltip: "Yellow",
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Object.assign({}, defaults, {
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iconColor: 0x00FF00,
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iconColorActive: 0x00FF00
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}), // tooltip: "Green",
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Object.assign({}, defaults, {
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iconColor: 0xFF00FF,
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iconColorActive: 0xFF00FF
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}) // tooltip: "Violet",
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]
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})
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this.scene.addChild(this.palette)
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this.scene.interactive = false
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}
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toggleEditMode() {
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this.scene.interactive = !this.scene.interactive
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console.log("this.scene.interactive")
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}
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selectColor(button) {
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this.scene.color = button.opts.iconColor
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}
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undo(button) {
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this.scene.undo()
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setTimeout(() => {
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button.active = false
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}, 200)
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}
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redo(button) {
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this.scene.redo()
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setTimeout(() => {
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button.active = false
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}, 200)
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}
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clear(button) {
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this.scene.clearAll()
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setTimeout(() => {
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button.active = false
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}, 200)
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}
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}
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const app = new StylusApp({
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view: canvas,
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width: 640,
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height: 480,
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autoResize: false
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})
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window.app = app
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app.setup()
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app.run()
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</script>
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2019-07-04 09:16:50 +02:00
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<h2>
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References
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</h2>
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<ul>
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<li><a href="https://mattdesl.svbtle.com/drawing-lines-is-hard">Drawing Lines is Hard</a></li>
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<li><a href="http://perfectionkills.com/exploring-canvas-drawing-techniques/">Exploring Canvas Drawing
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Techniques</a></li>
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<li><a href="https://github.com/mattdesl/polyline-normals">Polyline Normals</a></li>
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</ul>
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2019-07-04 09:09:19 +02:00
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</body>
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