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多视角3D可旋转的HTML5 Logo动画_html5教程技巧

程序员文章站 2022-03-20 19:31:27
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这是一款基于HTML5和CSS3的3D动画特效，与之前的3D特效不同的是，这款是完全用HTML5特性实现的，而并非用多张图片叠加起来。这款3D动画还有一个特点是可以无限的旋转，从而可以从多个视角来观察HTML5 Logo。

多视角3D可旋转的HTML5 Logo动画_html5教程技巧

在线演示 源码下载

HTML代码

XML/HTML Code复制内容到剪贴板
  1. div class="link-overlay">
  3. div>
  4. canvas id="canvas" style="background-color:#ddd">canvas>

JavaScript代码

JavaScript Code复制内容到剪贴板
  1. // bind to window onload handler
  2. window.addEventListener('load', onloadHandler, false);
  4. /**
  5. * Window onload handler
  6. */
  7. function onloadHandler()
  8. {
  9. var canvas = document.getElementById('canvas');
  10. canvas.width = window.innerWidth;
  11. canvas.height = window.innerHeight;
  12. var k3dmain = new K3D.Controller(canvas, true);
  14. // generate 3D objects
  16. var obj1 = new K3D.K3DObject();
  17. with (obj1)
  18. {
  19. drawmode = "solid";
  20. shademode = "lightsource";
  21. sortmode = "unsorted";
  22. addphi = -0.5;
  23. abouty = -90;
  24. perslevel = 1000;
  25. init(
  26. [{x:-80,y:180,z:0},{x:0,y:180,z:-80},{x:0,y:0,z:-80},{x:-80,y:20,z:0},{x:-50,y:150,z:-30},{x:0,y:150,z:-80},{x:0,y:130,z:-80},{x:-30,y:130,z:-50},{x:-28,y:110,z:-52},{x:0,y:110,z:-80},{x:0,y:90,z:-80},{x:-45,y:90,z:-35},{x:-44,y:80,z:-36},{x:-25,y:80,z:-55},{x:-22,y:66,z:-58},{x:0,y:60,z:-80},{x:0,y:40,z:-80},{x:-40,y:50,z:-40}],
  27. [],
  28. [{color:[227,76,38],vertices:[0,1,2,3,0]},{color:[235,235,235],vertices:[4,5,6,7,8,9,10,11,4]},{color:[235,235,235],vertices:[12,13,14,15,16,17,12]}]
  29. );
  30. }
  31. k3dmain.addK3DObject(obj1);
  33. var obj2 = new K3D.K3DObject();
  34. with (obj2)
  35. {
  36. drawmode = "solid";
  37. shademode = "lightsource";
  38. sortmode = "unsorted";
  39. addphi = -0.5;
  40. abouty = -90;
  41. perslevel = 1000;
  42. init(
  43. [{x:0,y:180,z:-80},{x:80,y:180,z:0},{x:80,y:20,z:0},{x:0,y:0,z:-80},{x:0,y:165,z:-80},{x:68,y:165,z:-12},{x:55,y:35,z:-25},{x:0,y:20,z:-80},{x:0,y:150,z:-80},{x:50,y:150,z:-30},{x:47,y:130,z:-33},{x:0,y:130,z:-80},{x:0,y:110,z:-80},{x:45,y:110,z:-35},{x:40,y:50,z:-40},{x:0,y:40,z:-80},{x:0,y:60,z:-80},{x:20,y:66,z:-60},{x:23,y:90,z:-57},{x:0,y:90,z:-80}],
  44. [],
  45. [{color:[227,76,38],vertices:[0,1,2,3,0]},{color:[240,101,41],vertices:[4,5,6,7,4]},{color:[235,235,235],vertices:[8,9,10,11,8]},{color:[235,235,235],vertices:[12,13,14,15,16,17,18,19,12]}]
  46. );
  47. }
  48. k3dmain.addK3DObject(obj2);
  50. var obj3 = new K3D.K3DObject();
  51. with (obj3)
  52. {
  53. drawmode = "solid";
  54. shademode = "lightsource";
  55. sortmode = "unsorted";
  56. addphi = -0.5;
  57. abouty = -90;
  58. perslevel = 1000;
  59. init(
  60. [{x:80,y:180,z:0},{x:0,y:180,z:80},{x:0,y:0,z:80},{x:80,y:20,z:0},{x:50,y:150,z:30},{x:0,y:150,z:80},{x:0,y:130,z:80},{x:30,y:130,z:50},{x:28,y:110,z:52},{x:0,y:110,z:80},{x:0,y:90,z:80},{x:45,y:90,z:35},{x:44,y:80,z:36},{x:25,y:80,z:55},{x:22,y:66,z:58},{x:0,y:60,z:80},{x:0,y:40,z:80},{x:40,y:50,z:40}],
  61. [],
  62. [{color:[227,76,38],vertices:[0,1,2,3,0]},{color:[235,235,235],vertices:[4,5,6,7,8,9,10,11,4]},{color:[235,235,235],vertices:[12,13,14,15,16,17,12]}]
  63. );
  64. }
  65. k3dmain.addK3DObject(obj3);
  67. var obj4 = new K3D.K3DObject();
  68. with (obj4)
  69. {
  70. drawmode = "solid";
  71. shademode = "lightsource";
  72. sortmode = "unsorted";
  73. addphi = -0.5;
  74. abouty = -90;
  75. perslevel = 1000;
  76. init(
  77. [{x:0,y:180,z:80},{x:-80,y:180,z:0},{x:-80,y:20,z:0},{x:0,y:0,z:80},{x:0,y:165,z:80},{x:-68,y:165,z:12},{x:-55,y:35,z:25},{x:0,y:20,z:80},{x:0,y:150,z:80},{x:-50,y:150,z:30},{x:-47,y:130,z:33},{x:0,y:130,z:80},{x:0,y:110,z:80},{x:-45,y:110,z:35},{x:-40,y:50,z:40},{x:0,y:40,z:80},{x:0,y:60,z:80},{x:-20,y:66,z:60},{x:-23,y:90,z:57},{x:0,y:90,z:80}],
  78. [],
  79. [{color:[227,76,38],vertices:[0,1,2,3,0]},{color:[240,101,41],vertices:[4,5,6,7,4]},{color:[235,235,235],vertices:[8,9,10,11,8]},{color:[235,235,235],vertices:[12,13,14,15,16,17,18,19,12]}]
  80. );
  81. }
  82. k3dmain.addK3DObject(obj4);
  84. var objBase = new K3D.K3DObject();
  85. with (objBase)
  86. {
  87. drawmode = "solid";
  88. shademode = "lightsource";
  89. sortmode = "unsorted";
  90. addphi = -0.5;
  91. abouty = -90;
  92. perslevel = 1000;
  93. init(
  94. [{x:0,y:0,z:-80},{x:-80,y:20,z:0},{x:0,y:0,z:80},{x:80,y:20,z:0}],
  95. [],
  96. [{color:[227,76,38],vertices:[0,2,1,0]},{color:[227,76,38],vertices:[0,3,2,0]}]
  97. );
  98. }
  99. k3dmain.addK3DObject(objBase);
  101. var objHtml = new K3D.K3DObject();
  102. with (objHtml)
  103. {
  104. drawmode = "solid";
  105. shademode = "lightsource";
  106. //sortmode = "unsorted";
  107. color = [64,64,64];
  108. doublesided = true;
  109. addphi = -0.5;
  110. abouty = 100;
  111. scale = 0.75;
  112. perslevel = 1000;
  113. init(
  114. [{x:-80,y:40,z:0},{x:-70,y:40,z:0},{x:-70,y:30,z:0},{x:-60,y:30,z:0},{x:-60,y:40,z:0},{x:-50,y:40,z:0},{x:-50,y:10,z:0},{x:-60,y:10,z:0},{x:-60,y:20,z:0},{x:-70,y:20,z:0},{x:-70,y:10,z:0},{x:-80,y:10,z:0},{x:-40,y:40,z:0},{x:-10,y:40,z:0},{x:-10,y:30,z:0},{x:-20,y:30,z:0},{x:-20,y:10,z:0},{x:-30,y:10,z:0},{x:-30,y:30,z:0},{x:-40,y:30,z:0},{x:0,y:40,z:0},{x:10,y:40,z:0},{x:20,y:30,z:0},{x:30,y:40,z:0},{x:40,y:40,z:0},{x:40,y:10,z:0},{x:30,y:10,z:0},{x:30,y:30,z:0},{x:20,y:20,z:0},{x:10,y:30,z:0},{x:10,y:10,z:0},{x:0,y:10,z:0},{x:50,y:40,z:0},{x:60,y:40,z:0},{x:60,y:20,z:0},{x:80,y:20,z:0},{x:80,y:10,z:0},{x:50,y:10,z:0}],
  115. [],
  116. [{vertices:[0,1,2,3,4,5,6,7,8,9,10,11,0]},{vertices:[12,13,14,15,16,17,18,19,12]},{vertices:[20,21,22,23,24,25,26,27,28,29,30,31,20]},{vertices:[32,33,34,35,36,37,32]}]
  117. );
  118. }
  119. k3dmain.addK3DObject(objHtml);
  121. // add render loop callback
  122. var ctx = canvas.getContext('2d');
  123. var rotationOffset = 0;
  124. var len = (canvas.height > canvas.width ? canvas.height : canvas.width) * 0.7;
  125. k3dmain.clearBackground = false;
  126. k3dmain.callback = function()
  127. {
  128. // manually clear bg - as we want to render some extra goodies
  129. ctx.clearRect(0, 0, canvas.width, canvas.height);
  131. // draw bg effect before K3D does its 3D rendering
  132. ctx.save();
  133. ctx.translate(canvas.width/2, canvas.height/2);
  134. ctx.rotate(rotationOffset);
  136. // first fill pass - outer rays
  137. var RAYCOUNT = 24;
  138. ctx.fillStyle = "#eee";
  139. ctx.beginPath();
  140. for (var i=0; i
  141. {
  142. // rotate context
  143. ctx.rotate(TWOPI / RAYCOUNT);
  144. ctx.moveTo(0, 0);
  145. ctx.lineTo(-20, len);
  146. ctx.lineTo(20, len);
  147. }
  148. ctx.closePath();
  149. ctx.fill();
  150. // second fill pass - inner rays
  151. ctx.fillStyle = "#fff";
  152. ctx.beginPath();
  153. for (var i=0; i
  154. {
  155. // rotate context
  156. ctx.rotate(TWOPI / RAYCOUNT);
  157. ctx.moveTo(0, 0);
  158. ctx.lineTo(-15, len);
  159. ctx.lineTo(15, len);
  160. }
  161. ctx.closePath();
  162. ctx.fill();
  163. ctx.restore();
  164. rotationOffset += 0.005;
  166. // apply user interaction to rotation
  167. for (var i=0, objs=k3dmain.objects; i
  168. {
  169. objs[i].ophi += targetRotationX;
  170. }
  172. if (targetRotationX > -0.5) targetRotationX -= 0.05;
  173. else if (targetRotationX
  174. if (targetRotationX > -0.55 && targetRotationX
  175. };
  177. // start demo loop
  178. k3dmain.paused = true;
  179. setInterval(function(){k3dmain.tick()}, 1000/60);
  180. }
  182. // nifty drag/touch event capture code borrowed from Mr Doob http://mrdoob.com/
  183. var targetRotationX = 0;
  184. var targetRotationOnMouseDownX = 0;
  185. var mouseX = 0;
  186. var mouseXOnMouseDown = 0;
  187. var targetRotationY = 0;
  188. var targetRotationOnMouseDownY = 0;
  189. var mouseY = 0;
  190. var mouseYOnMouseDown = 0;
  192. var windowHalfX = window.innerWidth / 2;
  193. var windowHalfY = window.innerHeight / 2;
  195. document.addEventListener('mousedown', onDocumentMouseDown, false);
  196. document.addEventListener('touchstart', onDocumentTouchStart, false);
  197. document.addEventListener('touchmove', onDocumentTouchMove, false);
  199. function onDocumentMouseDown( event ) {
  201. event.preventDefault();
  203. document.addEventListener('mousemove', onDocumentMouseMove, false);
  204. document.addEventListener('mouseup', onDocumentMouseUp, false);
  205. document.addEventListener('mouseout', onDocumentMouseOut, false);
  207. mouseXOnMouseDown = event.clientX - windowHalfX;
  208. targetRotationOnMouseDownX = targetRotationX;
  209. mouseYOnMouseDown = event.clientY - windowHalfY;
  210. targetRotationOnMouseDownY = targetRotationY;
  211. }
  213. function onDocumentMouseMove( event )
  214. {
  215. mouseX = event.clientX - windowHalfX;
  216. targetRotationX = targetRotationOnMouseDownX + (mouseX - mouseXOnMouseDown) * 0.02;
  217. mouseY = event.clientY - windowHalfY;
  218. targetRotationY = targetRotationOnMouseDownY + (mouseY - mouseYOnMouseDown) * 0.02;
  219. }
  221. function onDocumentMouseUp( event )
  222. {
  223. document.removeEventListener('mousemove', onDocumentMouseMove, false);
  224. document.removeEventListener('mouseup', onDocumentMouseUp, false);
  225. document.removeEventListener('mouseout', onDocumentMouseOut, false);
  226. }
  228. function onDocumentMouseOut( event )
  229. {
  230. document.removeEventListener('mousemove', onDocumentMouseMove, false);
  231. document.removeEventListener('mouseup', onDocumentMouseUp, false);
  232. document.removeEventListener('mouseout', onDocumentMouseOut, false);
  233. }
  235. function onDocumentTouchStart( event )
  236. {
  237. if (event.touches.length == 1)
  238. {
  239. event.preventDefault();
  241. mouseXOnMouseDown = event.touches[0].pageX - windowHalfX;
  242. targetRotationOnMouseDownX = targetRotationX;
  243. mouseYOnMouseDown = event.touches[0].pageY - windowHalfY;
  244. targetRotationOnMouseDownY = targetRotationY;
  245. }
  246. }
  248. function onDocumentTouchMove( event )
  249. {
  250. if (event.touches.length == 1)
  251. {
  252. event.preventDefault();
  254. mouseX = event.touches[0].pageX - windowHalfX;
  255. targetRotationX = targetRotationOnMouseDownX + (mouseX - mouseXOnMouseDown) * 0.05;
  256. mouseY = event.touches[0].pageY - windowHalfY;
  257. targetRotationY = targetRotationOnMouseDownY + (mouseX - mouseYOnMouseDown) * 0.05;
  258. }
  259. }

以上就是本文的全部内容，希望对大家的学习有所帮助。

相关标签： HTML5 Logo 3D旋转

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