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[READ-ONLY] Mirror of https://github.com/flo-bit/shapecraft. flo-bit.dev/shapecraft
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6.1 kB · 388 lines
JavaScript
at commit da69385e
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constructor( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
Matrix3.prototype.isMatrix3 = true;
this.elements = [
1, 0, 0, 0, 1, 0, 0, 0, 1
];
if ( n11 !== undefined ) {
this.set( n11, n12, n13, n21, n22, n23, n31, n32, n33 );
}
}
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;
}
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;
}
invert() {
const te = this.elements,
n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ], n13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 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 ).invert().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 );
return this;
}
//
scale( sx, sy ) {
this.premultiply( _m3.makeScale( sx, sy ) );
return this;
}
rotate( theta ) {
this.premultiply( _m3.makeRotation( - theta ) );
return this;
}
translate( tx, ty ) {
this.premultiply( _m3.makeTranslation( tx, ty ) );
return this;
}
// for 2D Transforms
makeTranslation( x, y ) {
if ( x.isVector2 ) {
this.set(
1, 0, x.x, 0, 1, x.y, 0, 0, 1
);
} else {
this.set(
1, 0, x, 0, 1, y, 0, 0, 1
);
}
return this;
}
makeRotation( theta ) {
// counterclockwise
const c = Math.cos( theta ); const s = Math.sin( theta );
this.set(
c, - s, 0, s, c, 0, 0, 0, 1
);
return this;
}
makeScale( x, y ) {
this.set(
x, 0, 0, 0, y, 0, 0, 0, 1
);
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;
}
clone() {
return new this.constructor().fromArray( this.elements );
}
}
const _m3 = /*@__PURE__*/ new Matrix3();
export { Matrix3 };