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