Move around files so the repo will be organized as a monorepo.

font-src/support/geometry/transform.mjs

@@ -1,97 +0,0 @@
-import { Vec2 } from "./point.mjs";
-
-export class Transform {
-	constructor(xx, yx, xy, yy, x, y) {
-		this.xx = xx;
-		this.yx = yx;
-		this.xy = xy;
-		this.yy = yy;
-		this.x = x;
-		this.y = y;
-	}
-	static Id() {
-		return new Transform(1, 0, 0, 1, 0, 0);
-	}
-	static Translate(x, y) {
-		return new Transform(1, 0, 0, 1, x, y);
-	}
-
-	applyX(x, y) {
-		return x * this.xx + y * this.yx + this.x;
-	}
-	applyY(x, y) {
-		return x * this.xy + y * this.yy + this.y;
-	}
-	applyXY(x, y) {
-		return new Vec2(this.applyX(x, y), this.applyY(x, y));
-	}
-	applyToSink(pt, sink) {
-		sink.x = this.applyX(pt.x, pt.y);
-		sink.y = this.applyY(pt.x, pt.y);
-	}
-	apply(pt) {
-		return this.applyXY(pt.x, pt.y);
-	}
-
-	applyOffset(delta) {
-		return this.applyOffsetXY(delta.x, delta.y);
-	}
-	applyOffsetXY(deltaX, deltaY) {
-		return {
-			x: deltaX * this.xx + deltaY * this.yx,
-			y: deltaX * this.xy + deltaY * this.yy
-		};
-	}
-
-	unapplyToSink(pt, sink) {
-		const xx = pt.x - this.x;
-		const yy = pt.y - this.y;
-		const denom = this.xx * this.yy - this.xy * this.yx;
-		sink.x = (xx * this.yy - yy * this.yx) / denom;
-		sink.y = (yy * this.xx - xx * this.xy) / denom;
-	}
-	unapply(pt) {
-		let sink = new Vec2(0, 0);
-		this.unapplyToSink(pt, sink);
-		return sink;
-	}
-	inverse() {
-		const denom = this.xx * this.yy - this.xy * this.yx;
-		return new Transform(
-			this.yy / denom,
-			-this.yx / denom,
-			-this.xy / denom,
-			this.xx / denom,
-			-(this.x * this.yy - this.y * this.yx) / denom,
-			-(-this.x * this.xy + this.y * this.xx) / denom
-		);
-	}
-
-	toString() {
-		return `[[${this.xx} ${this.xy}] [${this.yx} ${this.yy}]] + [[${this.x}] [${this.y}]]`;
-	}
-	static isTranslate(tfm) {
-		return tfm.xx === 1 && tfm.yy === 1 && tfm.xy === 0 && tfm.yx === 0;
-	}
-	static isIdentity(tfm) {
-		return this.isTranslate(tfm) && tfm.x === 0 && tfm.y === 0;
-	}
-	static Combine(...tfms) {
-		let z00 = new Vec2(0, 0);
-		let z10 = new Vec2(1, 0);
-		let z01 = new Vec2(0, 1);
-		for (const tfm of tfms) {
-			z00 = tfm.apply(z00);
-			z10 = tfm.apply(z10);
-			z01 = tfm.apply(z01);
-		}
-		return new Transform(
-			z10.x - z00.x,
-			z01.x - z00.x,
-			z10.y - z00.y,
-			z01.y - z00.y,
-			z00.x,
-			z00.y
-		);
-	}
-}