three
Version:
JavaScript 3D library
269 lines (145 loc) • 4.74 kB
JavaScript
import { Vector3 } from '../math/Vector3.js';
import { BufferAttribute } from './BufferAttribute.js';
const _vector = new Vector3();
function InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {
this.name = '';
this.data = interleavedBuffer;
this.itemSize = itemSize;
this.offset = offset;
this.normalized = normalized === true;
}
Object.defineProperties( InterleavedBufferAttribute.prototype, {
count: {
get: function () {
return this.data.count;
}
},
array: {
get: function () {
return this.data.array;
}
},
needsUpdate: {
set: function ( value ) {
this.data.needsUpdate = value;
}
}
} );
Object.assign( InterleavedBufferAttribute.prototype, {
isInterleavedBufferAttribute: true,
applyMatrix4: function ( m ) {
for ( let i = 0, l = this.data.count; i < l; i ++ ) {
_vector.x = this.getX( i );
_vector.y = this.getY( i );
_vector.z = this.getZ( i );
_vector.applyMatrix4( m );
this.setXYZ( i, _vector.x, _vector.y, _vector.z );
}
return this;
},
setX: function ( index, x ) {
this.data.array[ index * this.data.stride + this.offset ] = x;
return this;
},
setY: function ( index, y ) {
this.data.array[ index * this.data.stride + this.offset + 1 ] = y;
return this;
},
setZ: function ( index, z ) {
this.data.array[ index * this.data.stride + this.offset + 2 ] = z;
return this;
},
setW: function ( index, w ) {
this.data.array[ index * this.data.stride + this.offset + 3 ] = w;
return this;
},
getX: function ( index ) {
return this.data.array[ index * this.data.stride + this.offset ];
},
getY: function ( index ) {
return this.data.array[ index * this.data.stride + this.offset + 1 ];
},
getZ: function ( index ) {
return this.data.array[ index * this.data.stride + this.offset + 2 ];
},
getW: function ( index ) {
return this.data.array[ index * this.data.stride + this.offset + 3 ];
},
setXY: function ( index, x, y ) {
index = index * this.data.stride + this.offset;
this.data.array[ index + 0 ] = x;
this.data.array[ index + 1 ] = y;
return this;
},
setXYZ: function ( index, x, y, z ) {
index = index * this.data.stride + this.offset;
this.data.array[ index + 0 ] = x;
this.data.array[ index + 1 ] = y;
this.data.array[ index + 2 ] = z;
return this;
},
setXYZW: function ( index, x, y, z, w ) {
index = index * this.data.stride + this.offset;
this.data.array[ index + 0 ] = x;
this.data.array[ index + 1 ] = y;
this.data.array[ index + 2 ] = z;
this.data.array[ index + 3 ] = w;
return this;
},
clone: function ( data ) {
if ( data === undefined ) {
console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );
const array = [];
for ( let i = 0; i < this.count; i ++ ) {
const index = i * this.data.stride + this.offset;
for ( let j = 0; j < this.itemSize; j ++ ) {
array.push( this.data.array[ index + j ] );
}
}
return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );
} else {
if ( data.interleavedBuffers === undefined ) {
data.interleavedBuffers = {};
}
if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );
}
return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );
}
},
toJSON: function ( data ) {
if ( data === undefined ) {
console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );
const array = [];
for ( let i = 0; i < this.count; i ++ ) {
const index = i * this.data.stride + this.offset;
for ( let j = 0; j < this.itemSize; j ++ ) {
array.push( this.data.array[ index + j ] );
}
}
// deinterleave data and save it as an ordinary buffer attribute for now
return {
itemSize: this.itemSize,
type: this.array.constructor.name,
array: array,
normalized: this.normalized
};
} else {
// save as true interlaved attribtue
if ( data.interleavedBuffers === undefined ) {
data.interleavedBuffers = {};
}
if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );
}
return {
isInterleavedBufferAttribute: true,
itemSize: this.itemSize,
data: this.data.uuid,
offset: this.offset,
normalized: this.normalized
};
}
}
} );
export { InterleavedBufferAttribute };