76 lines
1.9 KiB
TypeScript
76 lines
1.9 KiB
TypeScript
import vsSource from './shaders/shader.vert';
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import fsSource4 from './shaders/texture.frag';
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import {fetchObj, updateObj} from './objutils';
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import {initShaderProgram} from './shaders';
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import {loadTexture} from './texture';
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import {drawScene} from './draw';
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import {initParams, setProgramInfo} from './init';
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import {uiUpdateParams,
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uiUpdateTexture,
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uiUpdateObject,
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uiUpdateShader} from './uijquery';
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main();
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/**
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* The program purpose is encapsulated in a main function
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*/
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async function main() {
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const context: any = {
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gl: null,
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texture: null,
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params: null,
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buffers: null,
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programInfo: null,
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shaderProgram: null,
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fragmentShader: null,
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vertexShader: null,
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};
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const canvas: any = document.querySelector('#glCanvas')!;
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context.gl = canvas.getContext('webgl');
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if (context.gl == null) {
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canvas.parentNode.removeChild(canvas);
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document.getElementById('root')!.insertAdjacentHTML('beforeend',
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`<p>Unable to initialize WebGL. Your browser or machine may not
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support it.</p>`);
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}
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const data = await fetchObj('/static/objs/racer.obj');
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initParams(context);
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console.log(context.params);
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updateObj(context, data, true);
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initShaderProgram(context, vsSource, fsSource4);
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setProgramInfo(context);
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context.texture = loadTexture(context.gl, '/static/textures/racer.png');
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let then = 0;
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let changed = false;
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/**
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* Draws the scene repeatedly
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* @param {number} now the current time
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*/
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function render(now: any) {
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now *= 0.001;
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const deltaTime = now - then;
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context.params.squareRotation += deltaTime * context.params.rotSpeed;
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if (now >= 1 && changed == false) {
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changed = true;
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}
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then = now;
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drawScene(context.gl,
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context.programInfo,
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context.buffers,
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context.params,
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context.texture);
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requestAnimationFrame(render);
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}
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uiUpdateParams(context.params);
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uiUpdateTexture(context);
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uiUpdateObject(context);
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uiUpdateShader(context);
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requestAnimationFrame(render);
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}
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