diff options
Diffstat (limited to 'src/client/util/Transform.ts')
-rw-r--r-- | src/client/util/Transform.ts | 56 |
1 files changed, 18 insertions, 38 deletions
diff --git a/src/client/util/Transform.ts b/src/client/util/Transform.ts index 3e1039166..e9170ec36 100644 --- a/src/client/util/Transform.ts +++ b/src/client/util/Transform.ts @@ -3,7 +3,7 @@ export class Transform { private _translateY: number = 0; private _scale: number = 1; - static get Identity(): Transform { + static Identity(): Transform { return new Transform(0, 0, 1); } @@ -17,78 +17,64 @@ export class Transform { this._scale = scale; } - translate = (x: number, y: number): Transform => { + translate = (x: number, y: number): this => { this._translateX += x; this._translateY += y; return this; } - scale = (scale: number): Transform => { + scale = (scale: number): this => { this._scale *= scale; this._translateX *= scale; this._translateY *= scale; return this; } - scaleAbout = (scale: number, x: number, y: number): Transform => { + scaleAbout = (scale: number, x: number, y: number): this => { this._translateX += x * this._scale - x * this._scale * scale; this._translateY += y * this._scale - y * this._scale * scale; this._scale *= scale; return this; } - transform = (transform: Transform): Transform => { + transform = (transform: Transform): this => { this._translateX = transform._translateX + transform._scale * this._translateX; this._translateY = transform._translateY + transform._scale * this._translateY; this._scale *= transform._scale; return this; } - preTranslate = (x: number, y: number): Transform => { + preTranslate = (x: number, y: number): this => { this._translateX += this._scale * x; this._translateY += this._scale * y; return this; } - preScale = (scale: number): Transform => { + preScale = (scale: number): this => { this._scale *= scale; return this; } - preTransform = (transform: Transform): Transform => { + preTransform = (transform: Transform): this => { this._translateX += transform._translateX * this._scale; this._translateY += transform._translateY * this._scale; this._scale *= transform._scale; return this; } - translated = (x: number, y: number): Transform => { - return this.copy().translate(x, y); - } + translated = (x: number, y: number): Transform => this.copy().translate(x, y); - preTranslated = (x: number, y: number): Transform => { - return this.copy().preTranslate(x, y); - } + preTranslated = (x: number, y: number): Transform => this.copy().preTranslate(x, y); - scaled = (scale: number): Transform => { - return this.copy().scale(scale); - } + scaled = (scale: number): Transform => this.copy().scale(scale); - scaledAbout = (scale: number, x: number, y: number): Transform => { - return this.copy().scaleAbout(scale, x, y); - } + scaledAbout = (scale: number, x: number, y: number): Transform => this.copy().scaleAbout(scale, x, y); - preScaled = (scale: number): Transform => { - return this.copy().preScale(scale); - } + preScaled = (scale: number): Transform => this.copy().preScale(scale); - transformed = (transform: Transform): Transform => { - return this.copy().transform(transform); - } + transformed = (transform: Transform): Transform => this.copy().transform(transform); - preTransformed = (transform: Transform): Transform => { - return this.copy().preTransform(transform); - } + preTransformed = (transform: Transform): Transform => this.copy().preTransform(transform); transformPoint = (x: number, y: number): [number, number] => { x *= this._scale; @@ -98,9 +84,7 @@ export class Transform { return [x, y]; } - transformDirection = (x: number, y: number): [number, number] => { - return [x * this._scale, y * this._scale]; - } + transformDirection = (x: number, y: number): [number, number] => [x * this._scale, y * this._scale]; transformBounds(x: number, y: number, width: number, height: number): { x: number, y: number, width: number, height: number } { [x, y] = this.transformPoint(x, y); @@ -108,12 +92,8 @@ export class Transform { return { x, y, width, height }; } - inverse = () => { - return new Transform(-this._translateX / this._scale, -this._translateY / this._scale, 1 / this._scale) - } + inverse = () => new Transform(-this._translateX / this._scale, -this._translateY / this._scale, 1 / this._scale); - copy = () => { - return new Transform(this._translateX, this._translateY, this._scale); - } + copy = () => new Transform(this._translateX, this._translateY, this._scale); }
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