25 lines
908 B
TypeScript
25 lines
908 B
TypeScript
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// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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import type { Size } from "../types";
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/** Position normalized to 0-1 range, e.g. 150px in a 600x300px canvas is 0.25 */
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export function xToNormalized(size: Size, x: number): number {
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return x / size.width;
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}
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/** Position normalized to 0-1 range, e.g. 150px in a 600x300px canvas is 0.5 */
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export function yToNormalized(size: Size, y: number): number {
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return y / size.height;
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}
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/** Position in pixels from normalized range, e.g 0.25 in a 600x300px canvas is 150. */
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export function xFromNormalized(size: Size, x: number): number {
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return Math.round(x * size.width);
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}
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/** Position in pixels from normalized range, e.g 0.5 in a 600x300px canvas is 150. */
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export function yFromNormalized(size: Size, y: number): number {
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return Math.round(y * size.height);
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}
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