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Remove DragAndScale rounding when using trackpad (#1009)

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Fixes issue where pinch to zoom would jitter around scale 1 - D&S rounds
the value to exactly 1 when it is "close enough". Good for pointer, poor
UX for precision trackpad.
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2025-05-05 07:06:43 +10:00
committed by GitHub
parent 53f766af3d
commit 386f18a1e5
2 changed files with 10 additions and 8 deletions
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4
src/DragAndScale.ts
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@@ -122,7 +122,7 @@ export class DragAndScale {
this.onredraw?.(this)
}
changeScale(value: number, zooming_center?: Point): void {
changeScale(value: number, zooming_center?: Point, roundToScaleOne = true): void {
if (value < this.min_scale) {
value = this.min_scale
} else if (value > this.max_scale) {
@@ -143,7 +143,7 @@ export class DragAndScale {
]
const center = this.convertCanvasToOffset(normalizedCenter)
this.scale = value
if (Math.abs(this.scale - 1) < 0.01) this.scale = 1
if (roundToScaleOne && Math.abs(this.scale - 1) < 0.01) this.scale = 1
const new_center = this.convertCanvasToOffset(normalizedCenter)
const delta_offset = [
new_center[0] - center[0],