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109 lines
3.1 KiB
HTML
109 lines
3.1 KiB
HTML
<!DOCTYPE html>
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<html lang="es">
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<head>
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<meta charset="UTF-8" />
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<title>WASM + WebGL2 Canvas</title>
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<style>
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body {
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margin: 0;
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background: #111;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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overflow: hidden;
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}
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canvas {
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width: 100%;
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height: 100%;
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position: absolute;
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}
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</style>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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<script type="module">
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import initWasmModule from '/js/render_wasm.js';
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import {
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init, addShapeSolidFill, assignCanvas, hexToU32ARGB, getRandomInt, getRandomColor,
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getRandomFloat, useShape, setShapeChildren, setupInteraction, set_parent, allocBytes,
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addShapeSolidStrokeFill, getHeapU32
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} from './js/lib.js';
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const canvas = document.getElementById("canvas");
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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const params = new URLSearchParams(document.location.search);
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const shapes = params.get("shapes") || 1000;
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function draw_line(Module, x1, y1, x2, y2) {
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const len = 2;
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const ptr = allocBytes(len * 28);
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const heap = getHeapU32();
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const dv = new DataView(heap.buffer);
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let offset = 0;
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// MOVE to first point
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dv.setUint16(ptr + offset + 0, 1, true); // MOVE
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dv.setFloat32(ptr + offset + 20, x1, true);
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dv.setFloat32(ptr + offset + 24, y1, true);
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offset += 28;
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// LINE
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dv.setUint16(ptr + offset + 0, 2, true); // LINE
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dv.setFloat32(ptr + offset + 20, x2, true);
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dv.setFloat32(ptr + offset + 24, y2, true);
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offset += 28;
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Module._set_shape_path_content();
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Module._set_shape_selrect(x1, y1, x2, y2);
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}
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initWasmModule().then(Module => {
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init(Module);
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assignCanvas(canvas);
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Module._set_canvas_background(hexToU32ARGB("#FABADA", 1));
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Module._set_view(1, 0, 0);
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Module._init_shapes_pool(shapes + 1);
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setupInteraction(canvas);
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const children = [];
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for (let i = 0; i < shapes; i++) {
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const uuid = crypto.randomUUID();
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children.push(uuid);
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useShape(uuid);
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Module._set_parent(0, 0, 0, 0);
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Module._set_shape_type(4);
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const x1 = getRandomInt(0, canvas.width);
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const y1 = getRandomInt(0, canvas.height);
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const width = getRandomInt(20, 200);
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if (Math.random() < 0.5) {
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draw_line(Module, x1, y1, x1 + width, y1);
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}
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else {
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draw_line(Module, x1, y1, x1, y1 + width);
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}
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const color = getRandomColor();
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Module._add_shape_center_stroke(10, 0, 0, 0);
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const argb2 = hexToU32ARGB(color, getRandomFloat(0.1, 1.0));
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addShapeSolidStrokeFill(argb2);
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}
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useShape("00000000-0000-0000-0000-000000000000");
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setShapeChildren(children);
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performance.mark('render:begin');
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Module._render(Date.now());
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performance.mark('render:end');
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const { duration } = performance.measure('render', 'render:begin', 'render:end');
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// alert(`render time: ${duration.toFixed(2)}ms`);
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});
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</script>
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</body>
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</html>
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