MD2Loader.js 12 KB

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  1. import {
  2. AnimationClip,
  3. BufferGeometry,
  4. FileLoader,
  5. Float32BufferAttribute,
  6. Loader,
  7. Vector3
  8. } from '../../../build/three.module.js';
  9. var MD2Loader = function ( manager ) {
  10. Loader.call( this, manager );
  11. };
  12. MD2Loader.prototype = Object.assign( Object.create( Loader.prototype ), {
  13. constructor: MD2Loader,
  14. load: function ( url, onLoad, onProgress, onError ) {
  15. var scope = this;
  16. var loader = new FileLoader( scope.manager );
  17. loader.setPath( scope.path );
  18. loader.setResponseType( 'arraybuffer' );
  19. loader.setRequestHeader( scope.requestHeader );
  20. loader.setWithCredentials( scope.withCredentials );
  21. loader.load( url, function ( buffer ) {
  22. try {
  23. onLoad( scope.parse( buffer ) );
  24. } catch ( e ) {
  25. if ( onError ) {
  26. onError( e );
  27. } else {
  28. console.error( e );
  29. }
  30. scope.manager.itemError( url );
  31. }
  32. }, onProgress, onError );
  33. },
  34. parse: ( function () {
  35. var normalData = [
  36. [ - 0.525731, 0.000000, 0.850651 ], [ - 0.442863, 0.238856, 0.864188 ],
  37. [ - 0.295242, 0.000000, 0.955423 ], [ - 0.309017, 0.500000, 0.809017 ],
  38. [ - 0.162460, 0.262866, 0.951056 ], [ 0.000000, 0.000000, 1.000000 ],
  39. [ 0.000000, 0.850651, 0.525731 ], [ - 0.147621, 0.716567, 0.681718 ],
  40. [ 0.147621, 0.716567, 0.681718 ], [ 0.000000, 0.525731, 0.850651 ],
  41. [ 0.309017, 0.500000, 0.809017 ], [ 0.525731, 0.000000, 0.850651 ],
  42. [ 0.295242, 0.000000, 0.955423 ], [ 0.442863, 0.238856, 0.864188 ],
  43. [ 0.162460, 0.262866, 0.951056 ], [ - 0.681718, 0.147621, 0.716567 ],
  44. [ - 0.809017, 0.309017, 0.500000 ], [ - 0.587785, 0.425325, 0.688191 ],
  45. [ - 0.850651, 0.525731, 0.000000 ], [ - 0.864188, 0.442863, 0.238856 ],
  46. [ - 0.716567, 0.681718, 0.147621 ], [ - 0.688191, 0.587785, 0.425325 ],
  47. [ - 0.500000, 0.809017, 0.309017 ], [ - 0.238856, 0.864188, 0.442863 ],
  48. [ - 0.425325, 0.688191, 0.587785 ], [ - 0.716567, 0.681718, - 0.147621 ],
  49. [ - 0.500000, 0.809017, - 0.309017 ], [ - 0.525731, 0.850651, 0.000000 ],
  50. [ 0.000000, 0.850651, - 0.525731 ], [ - 0.238856, 0.864188, - 0.442863 ],
  51. [ 0.000000, 0.955423, - 0.295242 ], [ - 0.262866, 0.951056, - 0.162460 ],
  52. [ 0.000000, 1.000000, 0.000000 ], [ 0.000000, 0.955423, 0.295242 ],
  53. [ - 0.262866, 0.951056, 0.162460 ], [ 0.238856, 0.864188, 0.442863 ],
  54. [ 0.262866, 0.951056, 0.162460 ], [ 0.500000, 0.809017, 0.309017 ],
  55. [ 0.238856, 0.864188, - 0.442863 ], [ 0.262866, 0.951056, - 0.162460 ],
  56. [ 0.500000, 0.809017, - 0.309017 ], [ 0.850651, 0.525731, 0.000000 ],
  57. [ 0.716567, 0.681718, 0.147621 ], [ 0.716567, 0.681718, - 0.147621 ],
  58. [ 0.525731, 0.850651, 0.000000 ], [ 0.425325, 0.688191, 0.587785 ],
  59. [ 0.864188, 0.442863, 0.238856 ], [ 0.688191, 0.587785, 0.425325 ],
  60. [ 0.809017, 0.309017, 0.500000 ], [ 0.681718, 0.147621, 0.716567 ],
  61. [ 0.587785, 0.425325, 0.688191 ], [ 0.955423, 0.295242, 0.000000 ],
  62. [ 1.000000, 0.000000, 0.000000 ], [ 0.951056, 0.162460, 0.262866 ],
  63. [ 0.850651, - 0.525731, 0.000000 ], [ 0.955423, - 0.295242, 0.000000 ],
  64. [ 0.864188, - 0.442863, 0.238856 ], [ 0.951056, - 0.162460, 0.262866 ],
  65. [ 0.809017, - 0.309017, 0.500000 ], [ 0.681718, - 0.147621, 0.716567 ],
  66. [ 0.850651, 0.000000, 0.525731 ], [ 0.864188, 0.442863, - 0.238856 ],
  67. [ 0.809017, 0.309017, - 0.500000 ], [ 0.951056, 0.162460, - 0.262866 ],
  68. [ 0.525731, 0.000000, - 0.850651 ], [ 0.681718, 0.147621, - 0.716567 ],
  69. [ 0.681718, - 0.147621, - 0.716567 ], [ 0.850651, 0.000000, - 0.525731 ],
  70. [ 0.809017, - 0.309017, - 0.500000 ], [ 0.864188, - 0.442863, - 0.238856 ],
  71. [ 0.951056, - 0.162460, - 0.262866 ], [ 0.147621, 0.716567, - 0.681718 ],
  72. [ 0.309017, 0.500000, - 0.809017 ], [ 0.425325, 0.688191, - 0.587785 ],
  73. [ 0.442863, 0.238856, - 0.864188 ], [ 0.587785, 0.425325, - 0.688191 ],
  74. [ 0.688191, 0.587785, - 0.425325 ], [ - 0.147621, 0.716567, - 0.681718 ],
  75. [ - 0.309017, 0.500000, - 0.809017 ], [ 0.000000, 0.525731, - 0.850651 ],
  76. [ - 0.525731, 0.000000, - 0.850651 ], [ - 0.442863, 0.238856, - 0.864188 ],
  77. [ - 0.295242, 0.000000, - 0.955423 ], [ - 0.162460, 0.262866, - 0.951056 ],
  78. [ 0.000000, 0.000000, - 1.000000 ], [ 0.295242, 0.000000, - 0.955423 ],
  79. [ 0.162460, 0.262866, - 0.951056 ], [ - 0.442863, - 0.238856, - 0.864188 ],
  80. [ - 0.309017, - 0.500000, - 0.809017 ], [ - 0.162460, - 0.262866, - 0.951056 ],
  81. [ 0.000000, - 0.850651, - 0.525731 ], [ - 0.147621, - 0.716567, - 0.681718 ],
  82. [ 0.147621, - 0.716567, - 0.681718 ], [ 0.000000, - 0.525731, - 0.850651 ],
  83. [ 0.309017, - 0.500000, - 0.809017 ], [ 0.442863, - 0.238856, - 0.864188 ],
  84. [ 0.162460, - 0.262866, - 0.951056 ], [ 0.238856, - 0.864188, - 0.442863 ],
  85. [ 0.500000, - 0.809017, - 0.309017 ], [ 0.425325, - 0.688191, - 0.587785 ],
  86. [ 0.716567, - 0.681718, - 0.147621 ], [ 0.688191, - 0.587785, - 0.425325 ],
  87. [ 0.587785, - 0.425325, - 0.688191 ], [ 0.000000, - 0.955423, - 0.295242 ],
  88. [ 0.000000, - 1.000000, 0.000000 ], [ 0.262866, - 0.951056, - 0.162460 ],
  89. [ 0.000000, - 0.850651, 0.525731 ], [ 0.000000, - 0.955423, 0.295242 ],
  90. [ 0.238856, - 0.864188, 0.442863 ], [ 0.262866, - 0.951056, 0.162460 ],
  91. [ 0.500000, - 0.809017, 0.309017 ], [ 0.716567, - 0.681718, 0.147621 ],
  92. [ 0.525731, - 0.850651, 0.000000 ], [ - 0.238856, - 0.864188, - 0.442863 ],
  93. [ - 0.500000, - 0.809017, - 0.309017 ], [ - 0.262866, - 0.951056, - 0.162460 ],
  94. [ - 0.850651, - 0.525731, 0.000000 ], [ - 0.716567, - 0.681718, - 0.147621 ],
  95. [ - 0.716567, - 0.681718, 0.147621 ], [ - 0.525731, - 0.850651, 0.000000 ],
  96. [ - 0.500000, - 0.809017, 0.309017 ], [ - 0.238856, - 0.864188, 0.442863 ],
  97. [ - 0.262866, - 0.951056, 0.162460 ], [ - 0.864188, - 0.442863, 0.238856 ],
  98. [ - 0.809017, - 0.309017, 0.500000 ], [ - 0.688191, - 0.587785, 0.425325 ],
  99. [ - 0.681718, - 0.147621, 0.716567 ], [ - 0.442863, - 0.238856, 0.864188 ],
  100. [ - 0.587785, - 0.425325, 0.688191 ], [ - 0.309017, - 0.500000, 0.809017 ],
  101. [ - 0.147621, - 0.716567, 0.681718 ], [ - 0.425325, - 0.688191, 0.587785 ],
  102. [ - 0.162460, - 0.262866, 0.951056 ], [ 0.442863, - 0.238856, 0.864188 ],
  103. [ 0.162460, - 0.262866, 0.951056 ], [ 0.309017, - 0.500000, 0.809017 ],
  104. [ 0.147621, - 0.716567, 0.681718 ], [ 0.000000, - 0.525731, 0.850651 ],
  105. [ 0.425325, - 0.688191, 0.587785 ], [ 0.587785, - 0.425325, 0.688191 ],
  106. [ 0.688191, - 0.587785, 0.425325 ], [ - 0.955423, 0.295242, 0.000000 ],
  107. [ - 0.951056, 0.162460, 0.262866 ], [ - 1.000000, 0.000000, 0.000000 ],
  108. [ - 0.850651, 0.000000, 0.525731 ], [ - 0.955423, - 0.295242, 0.000000 ],
  109. [ - 0.951056, - 0.162460, 0.262866 ], [ - 0.864188, 0.442863, - 0.238856 ],
  110. [ - 0.951056, 0.162460, - 0.262866 ], [ - 0.809017, 0.309017, - 0.500000 ],
  111. [ - 0.864188, - 0.442863, - 0.238856 ], [ - 0.951056, - 0.162460, - 0.262866 ],
  112. [ - 0.809017, - 0.309017, - 0.500000 ], [ - 0.681718, 0.147621, - 0.716567 ],
  113. [ - 0.681718, - 0.147621, - 0.716567 ], [ - 0.850651, 0.000000, - 0.525731 ],
  114. [ - 0.688191, 0.587785, - 0.425325 ], [ - 0.587785, 0.425325, - 0.688191 ],
  115. [ - 0.425325, 0.688191, - 0.587785 ], [ - 0.425325, - 0.688191, - 0.587785 ],
  116. [ - 0.587785, - 0.425325, - 0.688191 ], [ - 0.688191, - 0.587785, - 0.425325 ]
  117. ];
  118. return function ( buffer ) {
  119. var data = new DataView( buffer );
  120. // http://tfc.duke.free.fr/coding/md2-specs-en.html
  121. var header = {};
  122. var headerNames = [
  123. 'ident', 'version',
  124. 'skinwidth', 'skinheight',
  125. 'framesize',
  126. 'num_skins', 'num_vertices', 'num_st', 'num_tris', 'num_glcmds', 'num_frames',
  127. 'offset_skins', 'offset_st', 'offset_tris', 'offset_frames', 'offset_glcmds', 'offset_end'
  128. ];
  129. for ( var i = 0; i < headerNames.length; i ++ ) {
  130. header[ headerNames[ i ] ] = data.getInt32( i * 4, true );
  131. }
  132. if ( header.ident !== 844121161 || header.version !== 8 ) {
  133. console.error( 'Not a valid MD2 file' );
  134. return;
  135. }
  136. if ( header.offset_end !== data.byteLength ) {
  137. console.error( 'Corrupted MD2 file' );
  138. return;
  139. }
  140. //
  141. var geometry = new BufferGeometry();
  142. // uvs
  143. var uvsTemp = [];
  144. var offset = header.offset_st;
  145. for ( var i = 0, l = header.num_st; i < l; i ++ ) {
  146. var u = data.getInt16( offset + 0, true );
  147. var v = data.getInt16( offset + 2, true );
  148. uvsTemp.push( u / header.skinwidth, 1 - ( v / header.skinheight ) );
  149. offset += 4;
  150. }
  151. // triangles
  152. offset = header.offset_tris;
  153. var vertexIndices = [];
  154. var uvIndices = [];
  155. for ( var i = 0, l = header.num_tris; i < l; i ++ ) {
  156. vertexIndices.push(
  157. data.getUint16( offset + 0, true ),
  158. data.getUint16( offset + 2, true ),
  159. data.getUint16( offset + 4, true )
  160. );
  161. uvIndices.push(
  162. data.getUint16( offset + 6, true ),
  163. data.getUint16( offset + 8, true ),
  164. data.getUint16( offset + 10, true )
  165. );
  166. offset += 12;
  167. }
  168. // frames
  169. var translation = new Vector3();
  170. var scale = new Vector3();
  171. var string = [];
  172. var frames = [];
  173. offset = header.offset_frames;
  174. for ( var i = 0, l = header.num_frames; i < l; i ++ ) {
  175. scale.set(
  176. data.getFloat32( offset + 0, true ),
  177. data.getFloat32( offset + 4, true ),
  178. data.getFloat32( offset + 8, true )
  179. );
  180. translation.set(
  181. data.getFloat32( offset + 12, true ),
  182. data.getFloat32( offset + 16, true ),
  183. data.getFloat32( offset + 20, true )
  184. );
  185. offset += 24;
  186. for ( var j = 0; j < 16; j ++ ) {
  187. var character = data.getUint8( offset + j, true );
  188. if ( character === 0 ) break;
  189. string[ j ] = character;
  190. }
  191. var frame = {
  192. name: String.fromCharCode.apply( null, string ),
  193. vertices: [],
  194. normals: []
  195. };
  196. offset += 16;
  197. for ( var j = 0; j < header.num_vertices; j ++ ) {
  198. var x = data.getUint8( offset ++, true );
  199. var y = data.getUint8( offset ++, true );
  200. var z = data.getUint8( offset ++, true );
  201. var n = normalData[ data.getUint8( offset ++, true ) ];
  202. x = x * scale.x + translation.x;
  203. y = y * scale.y + translation.y;
  204. z = z * scale.z + translation.z;
  205. frame.vertices.push( x, z, y ); // convert to Y-up
  206. frame.normals.push( n[ 0 ], n[ 2 ], n[ 1 ] ); // convert to Y-up
  207. }
  208. frames.push( frame );
  209. }
  210. // static
  211. var positions = [];
  212. var normals = [];
  213. var uvs = [];
  214. var verticesTemp = frames[ 0 ].vertices;
  215. var normalsTemp = frames[ 0 ].normals;
  216. for ( var i = 0, l = vertexIndices.length; i < l; i ++ ) {
  217. var vertexIndex = vertexIndices[ i ];
  218. var stride = vertexIndex * 3;
  219. //
  220. var x = verticesTemp[ stride ];
  221. var y = verticesTemp[ stride + 1 ];
  222. var z = verticesTemp[ stride + 2 ];
  223. positions.push( x, y, z );
  224. //
  225. var nx = normalsTemp[ stride ];
  226. var ny = normalsTemp[ stride + 1 ];
  227. var nz = normalsTemp[ stride + 2 ];
  228. normals.push( nx, ny, nz );
  229. //
  230. var uvIndex = uvIndices[ i ];
  231. stride = uvIndex * 2;
  232. var u = uvsTemp[ stride ];
  233. var v = uvsTemp[ stride + 1 ];
  234. uvs.push( u, v );
  235. }
  236. geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
  237. geometry.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
  238. geometry.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
  239. // animation
  240. var morphPositions = [];
  241. var morphNormals = [];
  242. for ( var i = 0, l = frames.length; i < l; i ++ ) {
  243. var frame = frames[ i ];
  244. var attributeName = frame.name;
  245. if ( frame.vertices.length > 0 ) {
  246. var positions = [];
  247. for ( var j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
  248. var vertexIndex = vertexIndices[ j ];
  249. var stride = vertexIndex * 3;
  250. var x = frame.vertices[ stride ];
  251. var y = frame.vertices[ stride + 1 ];
  252. var z = frame.vertices[ stride + 2 ];
  253. positions.push( x, y, z );
  254. }
  255. var positionAttribute = new Float32BufferAttribute( positions, 3 );
  256. positionAttribute.name = attributeName;
  257. morphPositions.push( positionAttribute );
  258. }
  259. if ( frame.normals.length > 0 ) {
  260. var normals = [];
  261. for ( var j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
  262. var vertexIndex = vertexIndices[ j ];
  263. var stride = vertexIndex * 3;
  264. var nx = frame.normals[ stride ];
  265. var ny = frame.normals[ stride + 1 ];
  266. var nz = frame.normals[ stride + 2 ];
  267. normals.push( nx, ny, nz );
  268. }
  269. var normalAttribute = new Float32BufferAttribute( normals, 3 );
  270. normalAttribute.name = attributeName;
  271. morphNormals.push( normalAttribute );
  272. }
  273. }
  274. geometry.morphAttributes.position = morphPositions;
  275. geometry.morphAttributes.normal = morphNormals;
  276. geometry.morphTargetsRelative = false;
  277. geometry.animations = AnimationClip.CreateClipsFromMorphTargetSequences( frames, 10 );
  278. return geometry;
  279. };
  280. } )()
  281. } );
  282. export { MD2Loader };