30 lines
726 B
JavaScript
30 lines
726 B
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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class Matrix2 {
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constructor() {
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this.el = [1, 0, 0, 1];
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}
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set(n11, n12, n21, n22) {
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let te = this.el;
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te[0] = n11;
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te[1] = n21;
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te[2] = n12;
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te[3] = n22;
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return this;
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}
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applyVector(vec) {
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let x = vec.x, y = vec.y;
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let e = this.el;
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vec.x = e[0] * x + e[2] * y;
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vec.y = e[1] * x + e[3] * y;
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return this;
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}
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setRotate(theta) {
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let el = this.el;
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let c = Math.cos(theta), s = Math.sin(theta);
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this.set(c, -s, s, c);
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return this;
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}
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}
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exports.Matrix2 = Matrix2;
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//# sourceMappingURL=Matrix2.js.map
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