多视角3D可旋转的HTML5 Logo动画

网络
事业上得寸进尺，生活中不论短长，何愁事业无成。人生最精彩的不是实现梦想的瞬间，而是坚持梦想的过程。

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。

在线演示 源码下载

HTML代码

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

JavaScript代码

JavaScript Code复制内容到剪贴板
  1. //bindtowindowonloadhandler
  2. window.addEventListener('load',onloadHandler,false);
  4. /**
  5. *Windowonloadhandler
  6. */
  7. functiononloadHandler()
  8. {
  9. varcanvas=document.getElementById('canvas');
  10. canvas.width=window.innerWidth;
  11. canvas.height=window.innerHeight;
  12. vark3dmain=newK3D.Controller(canvas,true);
  14. //generate3Dobjects
  16. varobj1=newK3D.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. varobj2=newK3D.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. varobj3=newK3D.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. varobj4=newK3D.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. varobjBase=newK3D.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. varobjHtml=newK3D.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. //addrenderloopcallback
  122. varctx=canvas.getContext('2d');
  123. varrotationOffset=0;
  124. varlen=(canvas.height>canvas.width?canvas.height:canvas.width)*0.7;
  125. k3dmain.clearBackground=false;
  126. k3dmain.callback=function()
  127. {
  128. //manuallyclearbg-aswewanttorendersomeextragoodies
  129. ctx.clearRect(0,0,canvas.width,canvas.height);
  131. //drawbgeffectbeforeK3Ddoesits3Drendering
  132. ctx.save();
  133. ctx.translate(canvas.width/2,canvas.height/2);
  134. ctx.rotate(rotationOffset);
  136. //firstfillpass-outerrays
  137. varRAYCOUNT=24;
  138. ctx.fillStyle="#eee";
  139. ctx.beginPath();
  140. for(vari=0;i<RAYCOUNT;i++)
  141. {
  142. //rotatecontext
  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. //secondfillpass-innerrays
  151. ctx.fillStyle="#fff";
  152. ctx.beginPath();
  153. for(vari=0;i<RAYCOUNT;i++)
  154. {
  155. //rotatecontext
  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. //applyuserinteractiontorotation
  167. for(vari=0,objs=k3dmain.objects;i<objs.length;i++)
  168. {
  169. objs[i].ophi+=targetRotationX;
  170. }
  172. if(targetRotationX>-0.5)targetRotationX-=0.05;
  173. elseif(targetRotationX<-0.55)targetRotationX+=0.05;
  174. if(targetRotationX>-0.55&&targetRotationX<-0.5)targetRotationX=-0.5;
  175. };
  177. //startdemoloop
  178. k3dmain.paused=true;
  179. setInterval(function(){k3dmain.tick()},1000/60);
  180. }
  182. //niftydrag/toucheventcapturecodeborrowedfromMrDoobhttp://mrdoob.com/
  183. vartargetRotationX=0;
  184. vartargetRotationOnMouseDownX=0;
  185. varmouseX=0;
  186. varmouseXOnMouseDown=0;
  187. vartargetRotationY=0;
  188. vartargetRotationOnMouseDownY=0;
  189. varmouseY=0;
  190. varmouseYOnMouseDown=0;
  192. varwindowHalfX=window.innerWidth/2;
  193. varwindowHalfY=window.innerHeight/2;
  195. document.addEventListener('mousedown',onDocumentMouseDown,false);
  196. document.addEventListener('touchstart',onDocumentTouchStart,false);
  197. document.addEventListener('touchmove',onDocumentTouchMove,false);
  199. functiononDocumentMouseDown(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. functiononDocumentMouseMove(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. functiononDocumentMouseUp(event)
  222. {
  223. document.removeEventListener('mousemove',onDocumentMouseMove,false);
  224. document.removeEventListener('mouseup',onDocumentMouseUp,false);
  225. document.removeEventListener('mouseout',onDocumentMouseOut,false);
  226. }
  228. functiononDocumentMouseOut(event)
  229. {
  230. document.removeEventListener('mousemove',onDocumentMouseMove,false);
  231. document.removeEventListener('mouseup',onDocumentMouseUp,false);
  232. document.removeEventListener('mouseout',onDocumentMouseOut,false);
  233. }
  235. functiononDocumentTouchStart(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. functiononDocumentTouchMove(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。