123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344 |
- class Matrix3 {
- constructor() {
- Object.defineProperty( this, 'isMatrix3', { value: true } );
- this.elements = [
- 1, 0, 0,
- 0, 1, 0,
- 0, 0, 1
- ];
- if ( arguments.length > 0 ) {
- console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
- }
- }
- set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
- const te = this.elements;
- te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
- te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
- te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
- return this;
- }
- identity() {
- this.set(
- 1, 0, 0,
- 0, 1, 0,
- 0, 0, 1
- );
- return this;
- }
- clone() {
- return new this.constructor().fromArray( this.elements );
- }
- copy( m ) {
- const te = this.elements;
- const me = m.elements;
- te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
- te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
- te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
- return this;
- }
- extractBasis( xAxis, yAxis, zAxis ) {
- xAxis.setFromMatrix3Column( this, 0 );
- yAxis.setFromMatrix3Column( this, 1 );
- zAxis.setFromMatrix3Column( this, 2 );
- return this;
- }
- setFromMatrix4( m ) {
- const me = m.elements;
- this.set(
- me[ 0 ], me[ 4 ], me[ 8 ],
- me[ 1 ], me[ 5 ], me[ 9 ],
- me[ 2 ], me[ 6 ], me[ 10 ]
- );
- return this;
- }
- multiply( m ) {
- return this.multiplyMatrices( this, m );
- }
- premultiply( m ) {
- return this.multiplyMatrices( m, this );
- }
- multiplyMatrices( a, b ) {
- const ae = a.elements;
- const be = b.elements;
- const te = this.elements;
- const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
- const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
- const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
- const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
- const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
- const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
- te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
- te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
- te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
- te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
- te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
- te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
- te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
- te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
- te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
- return this;
- }
- multiplyScalar( s ) {
- const te = this.elements;
- te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
- te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
- te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
- return this;
- }
- determinant() {
- const te = this.elements;
- const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
- d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
- g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
- return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
- }
- getInverse( matrix, throwOnDegenerate ) {
- if ( throwOnDegenerate !== undefined ) {
- console.warn( "THREE.Matrix3: .getInverse() can no longer be configured to throw on degenerate." );
- }
- const me = matrix.elements,
- te = this.elements,
- n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
- n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
- n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
- t11 = n33 * n22 - n32 * n23,
- t12 = n32 * n13 - n33 * n12,
- t13 = n23 * n12 - n22 * n13,
- det = n11 * t11 + n21 * t12 + n31 * t13;
- if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );
- const detInv = 1 / det;
- te[ 0 ] = t11 * detInv;
- te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
- te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
- te[ 3 ] = t12 * detInv;
- te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
- te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
- te[ 6 ] = t13 * detInv;
- te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
- te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
- return this;
- }
- transpose() {
- let tmp;
- const m = this.elements;
- tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
- tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
- tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
- return this;
- }
- getNormalMatrix( matrix4 ) {
- return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
- }
- transposeIntoArray( r ) {
- const m = this.elements;
- r[ 0 ] = m[ 0 ];
- r[ 1 ] = m[ 3 ];
- r[ 2 ] = m[ 6 ];
- r[ 3 ] = m[ 1 ];
- r[ 4 ] = m[ 4 ];
- r[ 5 ] = m[ 7 ];
- r[ 6 ] = m[ 2 ];
- r[ 7 ] = m[ 5 ];
- r[ 8 ] = m[ 8 ];
- return this;
- }
- setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {
- const c = Math.cos( rotation );
- const s = Math.sin( rotation );
- this.set(
- sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
- - sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
- 0, 0, 1
- );
- }
- scale( sx, sy ) {
- const te = this.elements;
- te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
- te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
- return this;
- }
- rotate( theta ) {
- const c = Math.cos( theta );
- const s = Math.sin( theta );
- const te = this.elements;
- const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
- const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
- te[ 0 ] = c * a11 + s * a21;
- te[ 3 ] = c * a12 + s * a22;
- te[ 6 ] = c * a13 + s * a23;
- te[ 1 ] = - s * a11 + c * a21;
- te[ 4 ] = - s * a12 + c * a22;
- te[ 7 ] = - s * a13 + c * a23;
- return this;
- }
- translate( tx, ty ) {
- const te = this.elements;
- te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
- te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
- return this;
- }
- equals( matrix ) {
- const te = this.elements;
- const me = matrix.elements;
- for ( let i = 0; i < 9; i ++ ) {
- if ( te[ i ] !== me[ i ] ) return false;
- }
- return true;
- }
- fromArray( array, offset = 0 ) {
- for ( let i = 0; i < 9; i ++ ) {
- this.elements[ i ] = array[ i + offset ];
- }
- return this;
- }
- toArray( array = [], offset = 0 ) {
- const te = this.elements;
- array[ offset ] = te[ 0 ];
- array[ offset + 1 ] = te[ 1 ];
- array[ offset + 2 ] = te[ 2 ];
- array[ offset + 3 ] = te[ 3 ];
- array[ offset + 4 ] = te[ 4 ];
- array[ offset + 5 ] = te[ 5 ];
- array[ offset + 6 ] = te[ 6 ];
- array[ offset + 7 ] = te[ 7 ];
- array[ offset + 8 ] = te[ 8 ];
- return array;
- }
- }
- export { Matrix3 };
|