64 lines
1.0 KiB
TypeScript
64 lines
1.0 KiB
TypeScript
import { copyVector, type Vector } from "#/engine/Vector.ts";
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export type Rect = {
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position: Vector;
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width: number;
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height: number;
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};
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export function createRect(
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position: Vector,
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width: number,
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height: number,
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): Rect {
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return {
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position,
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width,
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height,
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};
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}
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export function fromMinMax(min: Vector, max: Vector): Rect {
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return {
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position: copyVector(min),
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width: max.x - min.x,
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height: max.y - min.y,
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};
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}
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export function strokeRect(
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ctx: CanvasRenderingContext2D,
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rect: Rect,
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color: string = "#fff",
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alpha: number = 1.0,
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): void {
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ctx.save();
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ctx.strokeStyle = color;
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ctx.globalAlpha = alpha;
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ctx.strokeRect(
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rect.position.x - 0.5,
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rect.position.y - 0.5,
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rect.width,
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rect.height,
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);
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ctx.restore();
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}
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export function fillRect(
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ctx: CanvasRenderingContext2D,
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rect: Rect,
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color: string = "#fff",
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alpha: number = 1.0,
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): void {
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ctx.save();
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ctx.strokeStyle = color;
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ctx.globalAlpha = alpha;
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ctx.fillRect(
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rect.position.x - 0.5,
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rect.position.y - 0.5,
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rect.width,
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rect.height,
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);
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ctx.restore();
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}
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