2937efacde
My original hack to put the scale when we create the canvas element doesn't make much sense. It should be done when we are rendering the scene. I moved it there in this PR. The rest was all about forwarding the scale to where it's needed.
24 lines
639 B
TypeScript
24 lines
639 B
TypeScript
export function getZoomOrigin(canvas: HTMLCanvasElement | null, scale: number) {
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if (canvas === null) {
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return { x: 0, y: 0 };
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}
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const context = canvas.getContext("2d");
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if (context === null) {
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return { x: 0, y: 0 };
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}
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const normalizedCanvasWidth = canvas.width / scale;
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const normalizedCanvasHeight = canvas.height / scale;
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return {
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x: normalizedCanvasWidth / 2,
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y: normalizedCanvasHeight / 2,
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};
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}
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export function getNormalizedZoom(zoom: number): number {
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const normalizedZoom = parseFloat(zoom.toFixed(2));
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const clampedZoom = Math.max(0.1, Math.min(normalizedZoom, 2));
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return clampedZoom;
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}
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