MD2Loader.js 12 KB

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  1. THREE.MD2Loader = function ( manager ) {
  2. THREE.Loader.call( this, manager );
  3. };
  4. THREE.MD2Loader.prototype = Object.assign( Object.create( THREE.Loader.prototype ), {
  5. constructor: THREE.MD2Loader,
  6. load: function ( url, onLoad, onProgress, onError ) {
  7. var scope = this;
  8. var loader = new THREE.FileLoader( scope.manager );
  9. loader.setPath( scope.path );
  10. loader.setResponseType( 'arraybuffer' );
  11. loader.setRequestHeader( scope.requestHeader );
  12. loader.setWithCredentials( scope.withCredentials );
  13. loader.load( url, function ( buffer ) {
  14. try {
  15. onLoad( scope.parse( buffer ) );
  16. } catch ( e ) {
  17. if ( onError ) {
  18. onError( e );
  19. } else {
  20. console.error( e );
  21. }
  22. scope.manager.itemError( url );
  23. }
  24. }, onProgress, onError );
  25. },
  26. parse: ( function () {
  27. var normalData = [
  28. [ - 0.525731, 0.000000, 0.850651 ], [ - 0.442863, 0.238856, 0.864188 ],
  29. [ - 0.295242, 0.000000, 0.955423 ], [ - 0.309017, 0.500000, 0.809017 ],
  30. [ - 0.162460, 0.262866, 0.951056 ], [ 0.000000, 0.000000, 1.000000 ],
  31. [ 0.000000, 0.850651, 0.525731 ], [ - 0.147621, 0.716567, 0.681718 ],
  32. [ 0.147621, 0.716567, 0.681718 ], [ 0.000000, 0.525731, 0.850651 ],
  33. [ 0.309017, 0.500000, 0.809017 ], [ 0.525731, 0.000000, 0.850651 ],
  34. [ 0.295242, 0.000000, 0.955423 ], [ 0.442863, 0.238856, 0.864188 ],
  35. [ 0.162460, 0.262866, 0.951056 ], [ - 0.681718, 0.147621, 0.716567 ],
  36. [ - 0.809017, 0.309017, 0.500000 ], [ - 0.587785, 0.425325, 0.688191 ],
  37. [ - 0.850651, 0.525731, 0.000000 ], [ - 0.864188, 0.442863, 0.238856 ],
  38. [ - 0.716567, 0.681718, 0.147621 ], [ - 0.688191, 0.587785, 0.425325 ],
  39. [ - 0.500000, 0.809017, 0.309017 ], [ - 0.238856, 0.864188, 0.442863 ],
  40. [ - 0.425325, 0.688191, 0.587785 ], [ - 0.716567, 0.681718, - 0.147621 ],
  41. [ - 0.500000, 0.809017, - 0.309017 ], [ - 0.525731, 0.850651, 0.000000 ],
  42. [ 0.000000, 0.850651, - 0.525731 ], [ - 0.238856, 0.864188, - 0.442863 ],
  43. [ 0.000000, 0.955423, - 0.295242 ], [ - 0.262866, 0.951056, - 0.162460 ],
  44. [ 0.000000, 1.000000, 0.000000 ], [ 0.000000, 0.955423, 0.295242 ],
  45. [ - 0.262866, 0.951056, 0.162460 ], [ 0.238856, 0.864188, 0.442863 ],
  46. [ 0.262866, 0.951056, 0.162460 ], [ 0.500000, 0.809017, 0.309017 ],
  47. [ 0.238856, 0.864188, - 0.442863 ], [ 0.262866, 0.951056, - 0.162460 ],
  48. [ 0.500000, 0.809017, - 0.309017 ], [ 0.850651, 0.525731, 0.000000 ],
  49. [ 0.716567, 0.681718, 0.147621 ], [ 0.716567, 0.681718, - 0.147621 ],
  50. [ 0.525731, 0.850651, 0.000000 ], [ 0.425325, 0.688191, 0.587785 ],
  51. [ 0.864188, 0.442863, 0.238856 ], [ 0.688191, 0.587785, 0.425325 ],
  52. [ 0.809017, 0.309017, 0.500000 ], [ 0.681718, 0.147621, 0.716567 ],
  53. [ 0.587785, 0.425325, 0.688191 ], [ 0.955423, 0.295242, 0.000000 ],
  54. [ 1.000000, 0.000000, 0.000000 ], [ 0.951056, 0.162460, 0.262866 ],
  55. [ 0.850651, - 0.525731, 0.000000 ], [ 0.955423, - 0.295242, 0.000000 ],
  56. [ 0.864188, - 0.442863, 0.238856 ], [ 0.951056, - 0.162460, 0.262866 ],
  57. [ 0.809017, - 0.309017, 0.500000 ], [ 0.681718, - 0.147621, 0.716567 ],
  58. [ 0.850651, 0.000000, 0.525731 ], [ 0.864188, 0.442863, - 0.238856 ],
  59. [ 0.809017, 0.309017, - 0.500000 ], [ 0.951056, 0.162460, - 0.262866 ],
  60. [ 0.525731, 0.000000, - 0.850651 ], [ 0.681718, 0.147621, - 0.716567 ],
  61. [ 0.681718, - 0.147621, - 0.716567 ], [ 0.850651, 0.000000, - 0.525731 ],
  62. [ 0.809017, - 0.309017, - 0.500000 ], [ 0.864188, - 0.442863, - 0.238856 ],
  63. [ 0.951056, - 0.162460, - 0.262866 ], [ 0.147621, 0.716567, - 0.681718 ],
  64. [ 0.309017, 0.500000, - 0.809017 ], [ 0.425325, 0.688191, - 0.587785 ],
  65. [ 0.442863, 0.238856, - 0.864188 ], [ 0.587785, 0.425325, - 0.688191 ],
  66. [ 0.688191, 0.587785, - 0.425325 ], [ - 0.147621, 0.716567, - 0.681718 ],
  67. [ - 0.309017, 0.500000, - 0.809017 ], [ 0.000000, 0.525731, - 0.850651 ],
  68. [ - 0.525731, 0.000000, - 0.850651 ], [ - 0.442863, 0.238856, - 0.864188 ],
  69. [ - 0.295242, 0.000000, - 0.955423 ], [ - 0.162460, 0.262866, - 0.951056 ],
  70. [ 0.000000, 0.000000, - 1.000000 ], [ 0.295242, 0.000000, - 0.955423 ],
  71. [ 0.162460, 0.262866, - 0.951056 ], [ - 0.442863, - 0.238856, - 0.864188 ],
  72. [ - 0.309017, - 0.500000, - 0.809017 ], [ - 0.162460, - 0.262866, - 0.951056 ],
  73. [ 0.000000, - 0.850651, - 0.525731 ], [ - 0.147621, - 0.716567, - 0.681718 ],
  74. [ 0.147621, - 0.716567, - 0.681718 ], [ 0.000000, - 0.525731, - 0.850651 ],
  75. [ 0.309017, - 0.500000, - 0.809017 ], [ 0.442863, - 0.238856, - 0.864188 ],
  76. [ 0.162460, - 0.262866, - 0.951056 ], [ 0.238856, - 0.864188, - 0.442863 ],
  77. [ 0.500000, - 0.809017, - 0.309017 ], [ 0.425325, - 0.688191, - 0.587785 ],
  78. [ 0.716567, - 0.681718, - 0.147621 ], [ 0.688191, - 0.587785, - 0.425325 ],
  79. [ 0.587785, - 0.425325, - 0.688191 ], [ 0.000000, - 0.955423, - 0.295242 ],
  80. [ 0.000000, - 1.000000, 0.000000 ], [ 0.262866, - 0.951056, - 0.162460 ],
  81. [ 0.000000, - 0.850651, 0.525731 ], [ 0.000000, - 0.955423, 0.295242 ],
  82. [ 0.238856, - 0.864188, 0.442863 ], [ 0.262866, - 0.951056, 0.162460 ],
  83. [ 0.500000, - 0.809017, 0.309017 ], [ 0.716567, - 0.681718, 0.147621 ],
  84. [ 0.525731, - 0.850651, 0.000000 ], [ - 0.238856, - 0.864188, - 0.442863 ],
  85. [ - 0.500000, - 0.809017, - 0.309017 ], [ - 0.262866, - 0.951056, - 0.162460 ],
  86. [ - 0.850651, - 0.525731, 0.000000 ], [ - 0.716567, - 0.681718, - 0.147621 ],
  87. [ - 0.716567, - 0.681718, 0.147621 ], [ - 0.525731, - 0.850651, 0.000000 ],
  88. [ - 0.500000, - 0.809017, 0.309017 ], [ - 0.238856, - 0.864188, 0.442863 ],
  89. [ - 0.262866, - 0.951056, 0.162460 ], [ - 0.864188, - 0.442863, 0.238856 ],
  90. [ - 0.809017, - 0.309017, 0.500000 ], [ - 0.688191, - 0.587785, 0.425325 ],
  91. [ - 0.681718, - 0.147621, 0.716567 ], [ - 0.442863, - 0.238856, 0.864188 ],
  92. [ - 0.587785, - 0.425325, 0.688191 ], [ - 0.309017, - 0.500000, 0.809017 ],
  93. [ - 0.147621, - 0.716567, 0.681718 ], [ - 0.425325, - 0.688191, 0.587785 ],
  94. [ - 0.162460, - 0.262866, 0.951056 ], [ 0.442863, - 0.238856, 0.864188 ],
  95. [ 0.162460, - 0.262866, 0.951056 ], [ 0.309017, - 0.500000, 0.809017 ],
  96. [ 0.147621, - 0.716567, 0.681718 ], [ 0.000000, - 0.525731, 0.850651 ],
  97. [ 0.425325, - 0.688191, 0.587785 ], [ 0.587785, - 0.425325, 0.688191 ],
  98. [ 0.688191, - 0.587785, 0.425325 ], [ - 0.955423, 0.295242, 0.000000 ],
  99. [ - 0.951056, 0.162460, 0.262866 ], [ - 1.000000, 0.000000, 0.000000 ],
  100. [ - 0.850651, 0.000000, 0.525731 ], [ - 0.955423, - 0.295242, 0.000000 ],
  101. [ - 0.951056, - 0.162460, 0.262866 ], [ - 0.864188, 0.442863, - 0.238856 ],
  102. [ - 0.951056, 0.162460, - 0.262866 ], [ - 0.809017, 0.309017, - 0.500000 ],
  103. [ - 0.864188, - 0.442863, - 0.238856 ], [ - 0.951056, - 0.162460, - 0.262866 ],
  104. [ - 0.809017, - 0.309017, - 0.500000 ], [ - 0.681718, 0.147621, - 0.716567 ],
  105. [ - 0.681718, - 0.147621, - 0.716567 ], [ - 0.850651, 0.000000, - 0.525731 ],
  106. [ - 0.688191, 0.587785, - 0.425325 ], [ - 0.587785, 0.425325, - 0.688191 ],
  107. [ - 0.425325, 0.688191, - 0.587785 ], [ - 0.425325, - 0.688191, - 0.587785 ],
  108. [ - 0.587785, - 0.425325, - 0.688191 ], [ - 0.688191, - 0.587785, - 0.425325 ]
  109. ];
  110. return function ( buffer ) {
  111. var data = new DataView( buffer );
  112. // http://tfc.duke.free.fr/coding/md2-specs-en.html
  113. var header = {};
  114. var headerNames = [
  115. 'ident', 'version',
  116. 'skinwidth', 'skinheight',
  117. 'framesize',
  118. 'num_skins', 'num_vertices', 'num_st', 'num_tris', 'num_glcmds', 'num_frames',
  119. 'offset_skins', 'offset_st', 'offset_tris', 'offset_frames', 'offset_glcmds', 'offset_end'
  120. ];
  121. for ( var i = 0; i < headerNames.length; i ++ ) {
  122. header[ headerNames[ i ] ] = data.getInt32( i * 4, true );
  123. }
  124. if ( header.ident !== 844121161 || header.version !== 8 ) {
  125. console.error( 'Not a valid MD2 file' );
  126. return;
  127. }
  128. if ( header.offset_end !== data.byteLength ) {
  129. console.error( 'Corrupted MD2 file' );
  130. return;
  131. }
  132. //
  133. var geometry = new THREE.BufferGeometry();
  134. // uvs
  135. var uvsTemp = [];
  136. var offset = header.offset_st;
  137. for ( var i = 0, l = header.num_st; i < l; i ++ ) {
  138. var u = data.getInt16( offset + 0, true );
  139. var v = data.getInt16( offset + 2, true );
  140. uvsTemp.push( u / header.skinwidth, 1 - ( v / header.skinheight ) );
  141. offset += 4;
  142. }
  143. // triangles
  144. offset = header.offset_tris;
  145. var vertexIndices = [];
  146. var uvIndices = [];
  147. for ( var i = 0, l = header.num_tris; i < l; i ++ ) {
  148. vertexIndices.push(
  149. data.getUint16( offset + 0, true ),
  150. data.getUint16( offset + 2, true ),
  151. data.getUint16( offset + 4, true )
  152. );
  153. uvIndices.push(
  154. data.getUint16( offset + 6, true ),
  155. data.getUint16( offset + 8, true ),
  156. data.getUint16( offset + 10, true )
  157. );
  158. offset += 12;
  159. }
  160. // frames
  161. var translation = new THREE.Vector3();
  162. var scale = new THREE.Vector3();
  163. var string = [];
  164. var frames = [];
  165. offset = header.offset_frames;
  166. for ( var i = 0, l = header.num_frames; i < l; i ++ ) {
  167. scale.set(
  168. data.getFloat32( offset + 0, true ),
  169. data.getFloat32( offset + 4, true ),
  170. data.getFloat32( offset + 8, true )
  171. );
  172. translation.set(
  173. data.getFloat32( offset + 12, true ),
  174. data.getFloat32( offset + 16, true ),
  175. data.getFloat32( offset + 20, true )
  176. );
  177. offset += 24;
  178. for ( var j = 0; j < 16; j ++ ) {
  179. var character = data.getUint8( offset + j, true );
  180. if ( character === 0 ) break;
  181. string[ j ] = character;
  182. }
  183. var frame = {
  184. name: String.fromCharCode.apply( null, string ),
  185. vertices: [],
  186. normals: []
  187. };
  188. offset += 16;
  189. for ( var j = 0; j < header.num_vertices; j ++ ) {
  190. var x = data.getUint8( offset ++, true );
  191. var y = data.getUint8( offset ++, true );
  192. var z = data.getUint8( offset ++, true );
  193. var n = normalData[ data.getUint8( offset ++, true ) ];
  194. x = x * scale.x + translation.x;
  195. y = y * scale.y + translation.y;
  196. z = z * scale.z + translation.z;
  197. frame.vertices.push( x, z, y ); // convert to Y-up
  198. frame.normals.push( n[ 0 ], n[ 2 ], n[ 1 ] ); // convert to Y-up
  199. }
  200. frames.push( frame );
  201. }
  202. // static
  203. var positions = [];
  204. var normals = [];
  205. var uvs = [];
  206. var verticesTemp = frames[ 0 ].vertices;
  207. var normalsTemp = frames[ 0 ].normals;
  208. for ( var i = 0, l = vertexIndices.length; i < l; i ++ ) {
  209. var vertexIndex = vertexIndices[ i ];
  210. var stride = vertexIndex * 3;
  211. //
  212. var x = verticesTemp[ stride ];
  213. var y = verticesTemp[ stride + 1 ];
  214. var z = verticesTemp[ stride + 2 ];
  215. positions.push( x, y, z );
  216. //
  217. var nx = normalsTemp[ stride ];
  218. var ny = normalsTemp[ stride + 1 ];
  219. var nz = normalsTemp[ stride + 2 ];
  220. normals.push( nx, ny, nz );
  221. //
  222. var uvIndex = uvIndices[ i ];
  223. stride = uvIndex * 2;
  224. var u = uvsTemp[ stride ];
  225. var v = uvsTemp[ stride + 1 ];
  226. uvs.push( u, v );
  227. }
  228. geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
  229. geometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( normals, 3 ) );
  230. geometry.setAttribute( 'uv', new THREE.Float32BufferAttribute( uvs, 2 ) );
  231. // animation
  232. var morphPositions = [];
  233. var morphNormals = [];
  234. for ( var i = 0, l = frames.length; i < l; i ++ ) {
  235. var frame = frames[ i ];
  236. var attributeName = frame.name;
  237. if ( frame.vertices.length > 0 ) {
  238. var positions = [];
  239. for ( var j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
  240. var vertexIndex = vertexIndices[ j ];
  241. var stride = vertexIndex * 3;
  242. var x = frame.vertices[ stride ];
  243. var y = frame.vertices[ stride + 1 ];
  244. var z = frame.vertices[ stride + 2 ];
  245. positions.push( x, y, z );
  246. }
  247. var positionAttribute = new THREE.Float32BufferAttribute( positions, 3 );
  248. positionAttribute.name = attributeName;
  249. morphPositions.push( positionAttribute );
  250. }
  251. if ( frame.normals.length > 0 ) {
  252. var normals = [];
  253. for ( var j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
  254. var vertexIndex = vertexIndices[ j ];
  255. var stride = vertexIndex * 3;
  256. var nx = frame.normals[ stride ];
  257. var ny = frame.normals[ stride + 1 ];
  258. var nz = frame.normals[ stride + 2 ];
  259. normals.push( nx, ny, nz );
  260. }
  261. var normalAttribute = new THREE.Float32BufferAttribute( normals, 3 );
  262. normalAttribute.name = attributeName;
  263. morphNormals.push( normalAttribute );
  264. }
  265. }
  266. geometry.morphAttributes.position = morphPositions;
  267. geometry.morphAttributes.normal = morphNormals;
  268. geometry.morphTargetsRelative = false;
  269. geometry.animations = THREE.AnimationClip.CreateClipsFromMorphTargetSequences( frames, 10 );
  270. return geometry;
  271. };
  272. } )()
  273. } );