400 lines
12 KiB
JavaScript
400 lines
12 KiB
JavaScript
import {
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AnimationClip,
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BufferGeometry,
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FileLoader,
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Float32BufferAttribute,
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Loader,
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Vector3
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} from 'three';
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const _normalData = [
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[ - 0.525731, 0.000000, 0.850651 ], [ - 0.442863, 0.238856, 0.864188 ],
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[ - 0.295242, 0.000000, 0.955423 ], [ - 0.309017, 0.500000, 0.809017 ],
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[ - 0.162460, 0.262866, 0.951056 ], [ 0.000000, 0.000000, 1.000000 ],
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[ 0.000000, 0.850651, 0.525731 ], [ - 0.147621, 0.716567, 0.681718 ],
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[ 0.147621, 0.716567, 0.681718 ], [ 0.000000, 0.525731, 0.850651 ],
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[ 0.309017, 0.500000, 0.809017 ], [ 0.525731, 0.000000, 0.850651 ],
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[ 0.295242, 0.000000, 0.955423 ], [ 0.442863, 0.238856, 0.864188 ],
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[ 0.162460, 0.262866, 0.951056 ], [ - 0.681718, 0.147621, 0.716567 ],
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[ - 0.809017, 0.309017, 0.500000 ], [ - 0.587785, 0.425325, 0.688191 ],
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[ - 0.850651, 0.525731, 0.000000 ], [ - 0.864188, 0.442863, 0.238856 ],
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[ - 0.716567, 0.681718, 0.147621 ], [ - 0.688191, 0.587785, 0.425325 ],
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[ - 0.500000, 0.809017, 0.309017 ], [ - 0.238856, 0.864188, 0.442863 ],
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[ - 0.425325, 0.688191, 0.587785 ], [ - 0.716567, 0.681718, - 0.147621 ],
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[ - 0.500000, 0.809017, - 0.309017 ], [ - 0.525731, 0.850651, 0.000000 ],
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[ 0.000000, 0.850651, - 0.525731 ], [ - 0.238856, 0.864188, - 0.442863 ],
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[ 0.000000, 0.955423, - 0.295242 ], [ - 0.262866, 0.951056, - 0.162460 ],
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[ 0.000000, 1.000000, 0.000000 ], [ 0.000000, 0.955423, 0.295242 ],
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[ - 0.262866, 0.951056, 0.162460 ], [ 0.238856, 0.864188, 0.442863 ],
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[ 0.262866, 0.951056, 0.162460 ], [ 0.500000, 0.809017, 0.309017 ],
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[ 0.238856, 0.864188, - 0.442863 ], [ 0.262866, 0.951056, - 0.162460 ],
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[ 0.500000, 0.809017, - 0.309017 ], [ 0.850651, 0.525731, 0.000000 ],
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[ 0.716567, 0.681718, 0.147621 ], [ 0.716567, 0.681718, - 0.147621 ],
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[ 0.525731, 0.850651, 0.000000 ], [ 0.425325, 0.688191, 0.587785 ],
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[ 0.864188, 0.442863, 0.238856 ], [ 0.688191, 0.587785, 0.425325 ],
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[ 0.809017, 0.309017, 0.500000 ], [ 0.681718, 0.147621, 0.716567 ],
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[ 0.587785, 0.425325, 0.688191 ], [ 0.955423, 0.295242, 0.000000 ],
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[ 1.000000, 0.000000, 0.000000 ], [ 0.951056, 0.162460, 0.262866 ],
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[ 0.850651, - 0.525731, 0.000000 ], [ 0.955423, - 0.295242, 0.000000 ],
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[ 0.864188, - 0.442863, 0.238856 ], [ 0.951056, - 0.162460, 0.262866 ],
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[ 0.809017, - 0.309017, 0.500000 ], [ 0.681718, - 0.147621, 0.716567 ],
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[ 0.850651, 0.000000, 0.525731 ], [ 0.864188, 0.442863, - 0.238856 ],
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[ 0.809017, 0.309017, - 0.500000 ], [ 0.951056, 0.162460, - 0.262866 ],
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[ 0.525731, 0.000000, - 0.850651 ], [ 0.681718, 0.147621, - 0.716567 ],
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[ 0.681718, - 0.147621, - 0.716567 ], [ 0.850651, 0.000000, - 0.525731 ],
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[ 0.809017, - 0.309017, - 0.500000 ], [ 0.864188, - 0.442863, - 0.238856 ],
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[ 0.951056, - 0.162460, - 0.262866 ], [ 0.147621, 0.716567, - 0.681718 ],
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[ 0.309017, 0.500000, - 0.809017 ], [ 0.425325, 0.688191, - 0.587785 ],
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[ 0.442863, 0.238856, - 0.864188 ], [ 0.587785, 0.425325, - 0.688191 ],
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[ 0.688191, 0.587785, - 0.425325 ], [ - 0.147621, 0.716567, - 0.681718 ],
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[ - 0.309017, 0.500000, - 0.809017 ], [ 0.000000, 0.525731, - 0.850651 ],
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[ - 0.525731, 0.000000, - 0.850651 ], [ - 0.442863, 0.238856, - 0.864188 ],
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[ - 0.295242, 0.000000, - 0.955423 ], [ - 0.162460, 0.262866, - 0.951056 ],
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[ 0.000000, 0.000000, - 1.000000 ], [ 0.295242, 0.000000, - 0.955423 ],
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[ 0.162460, 0.262866, - 0.951056 ], [ - 0.442863, - 0.238856, - 0.864188 ],
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[ - 0.309017, - 0.500000, - 0.809017 ], [ - 0.162460, - 0.262866, - 0.951056 ],
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[ 0.000000, - 0.850651, - 0.525731 ], [ - 0.147621, - 0.716567, - 0.681718 ],
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[ 0.147621, - 0.716567, - 0.681718 ], [ 0.000000, - 0.525731, - 0.850651 ],
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[ 0.309017, - 0.500000, - 0.809017 ], [ 0.442863, - 0.238856, - 0.864188 ],
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[ 0.162460, - 0.262866, - 0.951056 ], [ 0.238856, - 0.864188, - 0.442863 ],
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[ 0.500000, - 0.809017, - 0.309017 ], [ 0.425325, - 0.688191, - 0.587785 ],
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[ 0.716567, - 0.681718, - 0.147621 ], [ 0.688191, - 0.587785, - 0.425325 ],
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[ 0.587785, - 0.425325, - 0.688191 ], [ 0.000000, - 0.955423, - 0.295242 ],
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[ 0.000000, - 1.000000, 0.000000 ], [ 0.262866, - 0.951056, - 0.162460 ],
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[ 0.000000, - 0.850651, 0.525731 ], [ 0.000000, - 0.955423, 0.295242 ],
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[ 0.238856, - 0.864188, 0.442863 ], [ 0.262866, - 0.951056, 0.162460 ],
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[ 0.500000, - 0.809017, 0.309017 ], [ 0.716567, - 0.681718, 0.147621 ],
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[ 0.525731, - 0.850651, 0.000000 ], [ - 0.238856, - 0.864188, - 0.442863 ],
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[ - 0.500000, - 0.809017, - 0.309017 ], [ - 0.262866, - 0.951056, - 0.162460 ],
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[ - 0.850651, - 0.525731, 0.000000 ], [ - 0.716567, - 0.681718, - 0.147621 ],
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[ - 0.716567, - 0.681718, 0.147621 ], [ - 0.525731, - 0.850651, 0.000000 ],
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[ - 0.500000, - 0.809017, 0.309017 ], [ - 0.238856, - 0.864188, 0.442863 ],
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[ - 0.262866, - 0.951056, 0.162460 ], [ - 0.864188, - 0.442863, 0.238856 ],
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[ - 0.809017, - 0.309017, 0.500000 ], [ - 0.688191, - 0.587785, 0.425325 ],
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[ - 0.681718, - 0.147621, 0.716567 ], [ - 0.442863, - 0.238856, 0.864188 ],
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[ - 0.587785, - 0.425325, 0.688191 ], [ - 0.309017, - 0.500000, 0.809017 ],
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[ - 0.147621, - 0.716567, 0.681718 ], [ - 0.425325, - 0.688191, 0.587785 ],
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[ - 0.162460, - 0.262866, 0.951056 ], [ 0.442863, - 0.238856, 0.864188 ],
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[ 0.162460, - 0.262866, 0.951056 ], [ 0.309017, - 0.500000, 0.809017 ],
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[ 0.147621, - 0.716567, 0.681718 ], [ 0.000000, - 0.525731, 0.850651 ],
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[ 0.425325, - 0.688191, 0.587785 ], [ 0.587785, - 0.425325, 0.688191 ],
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[ 0.688191, - 0.587785, 0.425325 ], [ - 0.955423, 0.295242, 0.000000 ],
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[ - 0.951056, 0.162460, 0.262866 ], [ - 1.000000, 0.000000, 0.000000 ],
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[ - 0.850651, 0.000000, 0.525731 ], [ - 0.955423, - 0.295242, 0.000000 ],
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[ - 0.951056, - 0.162460, 0.262866 ], [ - 0.864188, 0.442863, - 0.238856 ],
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[ - 0.951056, 0.162460, - 0.262866 ], [ - 0.809017, 0.309017, - 0.500000 ],
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[ - 0.864188, - 0.442863, - 0.238856 ], [ - 0.951056, - 0.162460, - 0.262866 ],
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[ - 0.809017, - 0.309017, - 0.500000 ], [ - 0.681718, 0.147621, - 0.716567 ],
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[ - 0.681718, - 0.147621, - 0.716567 ], [ - 0.850651, 0.000000, - 0.525731 ],
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[ - 0.688191, 0.587785, - 0.425325 ], [ - 0.587785, 0.425325, - 0.688191 ],
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[ - 0.425325, 0.688191, - 0.587785 ], [ - 0.425325, - 0.688191, - 0.587785 ],
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[ - 0.587785, - 0.425325, - 0.688191 ], [ - 0.688191, - 0.587785, - 0.425325 ]
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];
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class MD2Loader extends Loader {
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constructor( manager ) {
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super( manager );
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}
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load( url, onLoad, onProgress, onError ) {
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const scope = this;
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const loader = new FileLoader( scope.manager );
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loader.setPath( scope.path );
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loader.setResponseType( 'arraybuffer' );
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loader.setRequestHeader( scope.requestHeader );
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loader.setWithCredentials( scope.withCredentials );
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loader.load( url, function ( buffer ) {
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try {
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onLoad( scope.parse( buffer ) );
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} catch ( e ) {
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if ( onError ) {
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onError( e );
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} else {
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console.error( e );
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}
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scope.manager.itemError( url );
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}
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}, onProgress, onError );
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}
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parse( buffer ) {
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const data = new DataView( buffer );
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// http://tfc.duke.free.fr/coding/md2-specs-en.html
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const header = {};
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const headerNames = [
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'ident', 'version',
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'skinwidth', 'skinheight',
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'framesize',
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'num_skins', 'num_vertices', 'num_st', 'num_tris', 'num_glcmds', 'num_frames',
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'offset_skins', 'offset_st', 'offset_tris', 'offset_frames', 'offset_glcmds', 'offset_end'
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];
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for ( let i = 0; i < headerNames.length; i ++ ) {
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header[ headerNames[ i ] ] = data.getInt32( i * 4, true );
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}
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if ( header.ident !== 844121161 || header.version !== 8 ) {
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console.error( 'Not a valid MD2 file' );
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return;
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}
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if ( header.offset_end !== data.byteLength ) {
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console.error( 'Corrupted MD2 file' );
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return;
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}
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//
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const geometry = new BufferGeometry();
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// uvs
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const uvsTemp = [];
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let offset = header.offset_st;
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for ( let i = 0, l = header.num_st; i < l; i ++ ) {
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const u = data.getInt16( offset + 0, true );
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const v = data.getInt16( offset + 2, true );
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uvsTemp.push( u / header.skinwidth, 1 - ( v / header.skinheight ) );
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offset += 4;
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}
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// triangles
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offset = header.offset_tris;
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const vertexIndices = [];
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const uvIndices = [];
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for ( let i = 0, l = header.num_tris; i < l; i ++ ) {
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vertexIndices.push(
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data.getUint16( offset + 0, true ),
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data.getUint16( offset + 2, true ),
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data.getUint16( offset + 4, true )
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);
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uvIndices.push(
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data.getUint16( offset + 6, true ),
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data.getUint16( offset + 8, true ),
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data.getUint16( offset + 10, true )
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);
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offset += 12;
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}
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// frames
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const translation = new Vector3();
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const scale = new Vector3();
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const frames = [];
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offset = header.offset_frames;
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for ( let i = 0, l = header.num_frames; i < l; i ++ ) {
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scale.set(
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data.getFloat32( offset + 0, true ),
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data.getFloat32( offset + 4, true ),
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data.getFloat32( offset + 8, true )
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);
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translation.set(
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data.getFloat32( offset + 12, true ),
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data.getFloat32( offset + 16, true ),
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data.getFloat32( offset + 20, true )
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);
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offset += 24;
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const string = [];
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for ( let j = 0; j < 16; j ++ ) {
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const character = data.getUint8( offset + j );
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if ( character === 0 ) break;
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string[ j ] = character;
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}
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const frame = {
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name: String.fromCharCode.apply( null, string ),
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vertices: [],
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normals: []
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};
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offset += 16;
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for ( let j = 0; j < header.num_vertices; j ++ ) {
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let x = data.getUint8( offset ++ );
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let y = data.getUint8( offset ++ );
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let z = data.getUint8( offset ++ );
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const n = _normalData[ data.getUint8( offset ++ ) ];
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x = x * scale.x + translation.x;
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y = y * scale.y + translation.y;
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z = z * scale.z + translation.z;
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frame.vertices.push( x, z, y ); // convert to Y-up
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frame.normals.push( n[ 0 ], n[ 2 ], n[ 1 ] ); // convert to Y-up
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}
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frames.push( frame );
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}
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// static
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const positions = [];
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const normals = [];
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const uvs = [];
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const verticesTemp = frames[ 0 ].vertices;
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const normalsTemp = frames[ 0 ].normals;
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for ( let i = 0, l = vertexIndices.length; i < l; i ++ ) {
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const vertexIndex = vertexIndices[ i ];
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let stride = vertexIndex * 3;
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//
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const x = verticesTemp[ stride ];
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const y = verticesTemp[ stride + 1 ];
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const z = verticesTemp[ stride + 2 ];
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positions.push( x, y, z );
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//
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const nx = normalsTemp[ stride ];
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const ny = normalsTemp[ stride + 1 ];
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const nz = normalsTemp[ stride + 2 ];
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normals.push( nx, ny, nz );
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//
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const uvIndex = uvIndices[ i ];
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stride = uvIndex * 2;
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const u = uvsTemp[ stride ];
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const v = uvsTemp[ stride + 1 ];
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uvs.push( u, v );
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}
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geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
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geometry.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
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geometry.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
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// animation
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const morphPositions = [];
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const morphNormals = [];
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for ( let i = 0, l = frames.length; i < l; i ++ ) {
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const frame = frames[ i ];
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const attributeName = frame.name;
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if ( frame.vertices.length > 0 ) {
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const positions = [];
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for ( let j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
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const vertexIndex = vertexIndices[ j ];
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const stride = vertexIndex * 3;
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const x = frame.vertices[ stride ];
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const y = frame.vertices[ stride + 1 ];
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const z = frame.vertices[ stride + 2 ];
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positions.push( x, y, z );
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}
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const positionAttribute = new Float32BufferAttribute( positions, 3 );
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positionAttribute.name = attributeName;
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morphPositions.push( positionAttribute );
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}
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if ( frame.normals.length > 0 ) {
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const normals = [];
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for ( let j = 0, jl = vertexIndices.length; j < jl; j ++ ) {
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const vertexIndex = vertexIndices[ j ];
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const stride = vertexIndex * 3;
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const nx = frame.normals[ stride ];
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const ny = frame.normals[ stride + 1 ];
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const nz = frame.normals[ stride + 2 ];
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normals.push( nx, ny, nz );
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}
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const normalAttribute = new Float32BufferAttribute( normals, 3 );
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normalAttribute.name = attributeName;
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morphNormals.push( normalAttribute );
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}
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}
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geometry.morphAttributes.position = morphPositions;
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geometry.morphAttributes.normal = morphNormals;
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geometry.morphTargetsRelative = false;
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geometry.animations = AnimationClip.CreateClipsFromMorphTargetSequences( frames, 10 );
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return geometry;
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}
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}
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export { MD2Loader };
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