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Use meta key + wheel to zoom in/out (#769)

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Timur Khazamov 2020-02-16 14:38:53 +01:00 • committed by GitHub
parent 360864ef3d
commit eee961d65f
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4 changed files with 20 additions and 11 deletions
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6
src/scene/zoom.ts
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@ -28,3 +28,9 @@ export function getZoomTranslation(canvas: HTMLCanvasElement, zoom: number) {
y: parseFloat(diffMiddleOfTheCanvas.y.toFixed(8)),
};
}
export function getNormalizedZoom(zoom: number): number {
const normalizedZoom = parseFloat(zoom.toFixed(2));
const clampedZoom = Math.max(0.1, Math.min(normalizedZoom, 2));
return clampedZoom;
}