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Prevent modification on zooming_center arg in DragAndScale (#489)

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This commit is contained in:
Chenlei Hu
2025-02-08 18:29:45 -05:00
committed by GitHub
parent 51144e956c
commit 92b0783a9b
1 changed files with 8 additions and 6 deletions
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14
src/DragAndScale.ts
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@@ -222,14 +222,16 @@ export class DragAndScale {
const rect = this.element.getBoundingClientRect()
if (!rect) return
zooming_center = zooming_center || [rect.width * 0.5, rect.height * 0.5]
zooming_center[0] -= rect.x
zooming_center[1] -= rect.y
const center = this.convertCanvasToOffset(zooming_center)
zooming_center = zooming_center ?? [rect.width * 0.5, rect.height * 0.5]
const normalizedCenter: Point = [
zooming_center[0] - rect.x,
zooming_center[1] - rect.y,
]
const center = this.convertCanvasToOffset(normalizedCenter)
this.scale = value
if (Math.abs(this.scale - 1) < 0.01) this.scale = 1
const new_center = this.convertCanvasToOffset(zooming_center)
const new_center = this.convertCanvasToOffset(normalizedCenter)
const delta_offset = [
new_center[0] - center[0],
new_center[1] - center[1],