init

scratch-render/src/playground/playground.js

@@ -0,0 +1,202 @@
+const ScratchRender = require('../RenderWebGL');
+const getMousePosition = require('./getMousePosition');
+
+const canvas = document.getElementById('scratch-stage');
+let fudge = 90;
+const renderer = new ScratchRender(canvas);
+renderer.setLayerGroupOrdering(['group1']);
+
+const drawableID = renderer.createDrawable('group1');
+renderer.updateDrawableProperties(drawableID, {
+    position: [0, 0],
+    scale: [100, 100],
+    direction: 90
+});
+
+const WantedSkinType = {
+    bitmap: 'bitmap',
+    vector: 'vector',
+    pen: 'pen'
+};
+
+const drawableID2 = renderer.createDrawable('group1');
+const wantedSkin = WantedSkinType.vector;
+
+// Bitmap (squirrel)
+const image = new Image();
+image.addEventListener('load', () => {
+    const bitmapSkinId = renderer.createBitmapSkin(image);
+    if (wantedSkin === WantedSkinType.bitmap) {
+        renderer.updateDrawableProperties(drawableID2, {
+            skinId: bitmapSkinId
+        });
+    }
+});
+image.crossOrigin = 'anonymous';
+image.src = 'https://cdn.assets.scratch.mit.edu/internalapi/asset/7e24c99c1b853e52f8e7f9004416fa34.png/get/';
+
+// SVG (cat 1-a)
+const xhr = new XMLHttpRequest();
+xhr.addEventListener('load', () => {
+    const skinId = renderer.createSVGSkin(xhr.responseText);
+    if (wantedSkin === WantedSkinType.vector) {
+        renderer.updateDrawableProperties(drawableID2, {
+            skinId: skinId
+        });
+    }
+});
+xhr.open('GET', 'https://cdn.assets.scratch.mit.edu/internalapi/asset/b7853f557e4426412e64bb3da6531a99.svg/get/');
+xhr.send();
+
+if (wantedSkin === WantedSkinType.pen) {
+    const penSkinID = renderer.createPenSkin();
+
+    renderer.updateDrawableProperties(drawableID2, {
+        skinId: penSkinID
+    });
+
+    canvas.addEventListener('click', event => {
+        const rect = canvas.getBoundingClientRect();
+
+        const x = event.clientX - rect.left;
+        const y = event.clientY - rect.top;
+
+        renderer.penLine(penSkinID, {
+            color4f: [Math.random(), Math.random(), Math.random(), 1],
+            diameter: 8
+        },
+        x - 240, 180 - y, (Math.random() * 480) - 240, (Math.random() * 360) - 180);
+    });
+}
+
+let posX = 0;
+let posY = 0;
+let scaleX = 100;
+let scaleY = 100;
+let fudgeProperty = 'posx';
+
+const fudgeInput = document.getElementById('fudge');
+const fudgePropertyInput = document.getElementById('fudgeproperty');
+const fudgeMinInput = document.getElementById('fudgeMin');
+const fudgeMaxInput = document.getElementById('fudgeMax');
+
+/* eslint require-jsdoc: 0 */
+const updateFudgeProperty = event => {
+    fudgeProperty = event.target.value;
+};
+
+const updateFudgeMin = event => {
+    fudgeInput.min = event.target.valueAsNumber;
+};
+
+const updateFudgeMax = event => {
+    fudgeInput.max = event.target.valueAsNumber;
+};
+
+fudgePropertyInput.addEventListener('change', updateFudgeProperty);
+fudgePropertyInput.addEventListener('init', updateFudgeProperty);
+
+fudgeMinInput.addEventListener('change', updateFudgeMin);
+fudgeMinInput.addEventListener('init', updateFudgeMin);
+
+fudgeMaxInput.addEventListener('change', updateFudgeMax);
+fudgeMaxInput.addEventListener('init', updateFudgeMax);
+
+// Ugly hack to properly set the values of the inputs on page load,
+// since they persist across reloads, at least in Firefox.
+// The best ugly hacks are the ones that reduce code duplication!
+fudgePropertyInput.dispatchEvent(new CustomEvent('init'));
+fudgeMinInput.dispatchEvent(new CustomEvent('init'));
+fudgeMaxInput.dispatchEvent(new CustomEvent('init'));
+fudgeInput.dispatchEvent(new CustomEvent('init'));
+
+const handleFudgeChanged = function (event) {
+    fudge = event.target.valueAsNumber;
+    const props = {};
+    switch (fudgeProperty) {
+    case 'posx':
+        props.position = [fudge, posY];
+        posX = fudge;
+        break;
+    case 'posy':
+        props.position = [posX, fudge];
+        posY = fudge;
+        break;
+    case 'direction':
+        props.direction = fudge;
+        break;
+    case 'scalex':
+        props.scale = [fudge, scaleY];
+        scaleX = fudge;
+        break;
+    case 'scaley':
+        props.scale = [scaleX, fudge];
+        scaleY = fudge;
+        break;
+    case 'scaleboth':
+        props.scale = [fudge, fudge];
+        scaleX = fudge;
+        scaleY = fudge;
+        break;
+    case 'color':
+        props.color = fudge;
+        break;
+    case 'whirl':
+        props.whirl = fudge;
+        break;
+    case 'fisheye':
+        props.fisheye = fudge;
+        break;
+    case 'pixelate':
+        props.pixelate = fudge;
+        break;
+    case 'mosaic':
+        props.mosaic = fudge;
+        break;
+    case 'brightness':
+        props.brightness = fudge;
+        break;
+    case 'ghost':
+        props.ghost = fudge;
+        break;
+    }
+    renderer.updateDrawableProperties(drawableID2, props);
+};
+
+fudgeInput.addEventListener('input', handleFudgeChanged);
+fudgeInput.addEventListener('change', handleFudgeChanged);
+fudgeInput.addEventListener('init', handleFudgeChanged);
+
+const updateStageScale = event => {
+    renderer.resize(480 * event.target.valueAsNumber, 360 * event.target.valueAsNumber);
+};
+
+const stageScaleInput = document.getElementById('stage-scale');
+
+stageScaleInput.addEventListener('input', updateStageScale);
+stageScaleInput.addEventListener('change', updateStageScale);
+
+canvas.addEventListener('mousemove', event => {
+    const mousePos = getMousePosition(event, canvas);
+    renderer.extractColor(mousePos.x, mousePos.y, 30);
+});
+
+canvas.addEventListener('click', event => {
+    const mousePos = getMousePosition(event, canvas);
+    const pickID = renderer.pick(mousePos.x, mousePos.y);
+    console.log(`You clicked on ${(pickID < 0 ? 'nothing' : `ID# ${pickID}`)}`);
+    if (pickID >= 0) {
+        console.dir(renderer.extractDrawableScreenSpace(pickID, mousePos.x, mousePos.y));
+    }
+});
+
+const drawStep = function () {
+    renderer.draw();
+    // renderer.getBounds(drawableID2);
+    // renderer.isTouchingColor(drawableID2, [255,255,255]);
+    requestAnimationFrame(drawStep);
+};
+drawStep();
+
+const debugCanvas = /** @type {canvas} */ document.getElementById('debug-canvas');
+renderer.setDebugCanvas(debugCanvas);