76 lines
1.6 KiB
TypeScript
76 lines
1.6 KiB
TypeScript
export class Vector2D {
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public readonly x: number;
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public readonly y: number;
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constructor(x = 0, y = 0) {
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this.x = x;
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this.y = y;
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}
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public plus(other: Vector2D): Vector2D {
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return new Vector2D(this.x + other.x, this.y + other.y);
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}
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public minus(other: Vector2D): Vector2D {
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return new Vector2D(this.x - other.x, this.y - other.y);
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}
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public scale(other: number): Vector2D {
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return new Vector2D(this.x * other, this.y * other);
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}
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}
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export class Rectangle {
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private readonly corner_1: Vector2D;
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private readonly corner_2: Vector2D;
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constructor(corner_1: Vector2D, corner_2: Vector2D) {
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this.corner_1 = corner_1;
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this.corner_2 = corner_2;
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}
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public get origin(): Vector2D {
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return new Vector2D(
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Math.min(this.corner_1.x, this.corner_2.x),
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Math.min(this.corner_1.y, this.corner_2.y),
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)
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}
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public get left(): number {
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return this.origin.x;
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}
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public get top(): number {
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return this.origin.y;
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}
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public get corner(): Vector2D {
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return new Vector2D(
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Math.max(this.corner_1.x, this.corner_2.x),
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Math.max(this.corner_1.y, this.corner_2.y),
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)
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}
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public get size(): Vector2D {
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return this.corner.minus(this.origin);
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}
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public get width(): number {
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return this.size.x;
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}
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public get height(): number {
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return this.size.y;
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}
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public get area(): number {
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return this.width * this.height;
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}
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public contains(point: Vector2D): boolean {
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return point.x >= this.origin.x &&
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point.y >= this.origin.y &&
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point.x <= this.corner.x &&
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point.y <= this.corner.y
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}
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}
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