shadertoy-prep.html 1.6 KB

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  1. <!-- Licensed under a BSD license. See license.html for license -->
  2. <!DOCTYPE html>
  3. <html>
  4. <head>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
  7. <title>Three.js - Shadertoy Prep</title>
  8. <style>
  9. html, body {
  10. height: 100%;
  11. margin: 0;
  12. }
  13. #c {
  14. width: 100%;
  15. height: 100%;
  16. display: block;
  17. }
  18. </style>
  19. </head>
  20. <body>
  21. <canvas id="c"></canvas>
  22. </body>
  23. <script type="module">
  24. import * as THREE from '../../build/three.module.js';
  25. function main() {
  26. const canvas = document.querySelector('#c');
  27. const renderer = new THREE.WebGLRenderer({canvas});
  28. renderer.autoClearColor = false;
  29. const camera = new THREE.OrthographicCamera(
  30. -1, // left
  31. 1, // right
  32. 1, // top
  33. -1, // bottom
  34. -1, // near,
  35. 1, // far
  36. );
  37. const scene = new THREE.Scene();
  38. const plane = new THREE.PlaneGeometry(2, 2);
  39. const material = new THREE.MeshBasicMaterial({
  40. color: 'red',
  41. });
  42. scene.add(new THREE.Mesh(plane, material));
  43. function resizeRendererToDisplaySize(renderer) {
  44. const canvas = renderer.domElement;
  45. const width = canvas.clientWidth;
  46. const height = canvas.clientHeight;
  47. const needResize = canvas.width !== width || canvas.height !== height;
  48. if (needResize) {
  49. renderer.setSize(width, height, false);
  50. }
  51. return needResize;
  52. }
  53. function render() {
  54. resizeRendererToDisplaySize(renderer);
  55. renderer.render(scene, camera);
  56. requestAnimationFrame(render);
  57. }
  58. requestAnimationFrame(render);
  59. }
  60. main();
  61. </script>
  62. </html>