three
Version:
JavaScript 3D library
55 lines (31 loc) • 579 B
JavaScript
export class Matrix2 {
constructor( n11, n12, n21, n22 ) {
Matrix2.prototype.isMatrix2 = true;
this.elements = [
1, 0,
0, 1,
];
if ( n11 !== undefined ) {
this.set( n11, n12, n21, n22 );
}
}
identity() {
this.set(
1, 0,
0, 1,
);
return this;
}
fromArray( array, offset = 0 ) {
for ( let i = 0; i < 4; i ++ ) {
this.elements[ i ] = array[ i + offset ];
}
return this;
}
set( n11, n12, n21, n22 ) {
const te = this.elements;
te[ 0 ] = n11; te[ 2 ] = n12;
te[ 1 ] = n21; te[ 3 ] = n22;
return this;
}
}