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Fix selection border points for vertical/horizontal flip

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Dariusz L
2025-08-04 00:46:14 +02:00
parent 2427f0bc5f
commit df6979a59b
6 changed files with 134 additions and 45 deletions
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11
js/CanvasLayers.js
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@@ -1036,9 +1036,16 @@ export class CanvasLayers {
const layerScaleY = layer.height / layer.originalHeight;
const cropRectW = layer.cropBounds.width * layerScaleX;
const cropRectH = layer.cropBounds.height * layerScaleY;
// Effective crop bounds start position, accounting for flips.
const effectiveCropX = layer.flipH
? layer.originalWidth - (layer.cropBounds.x + layer.cropBounds.width)
: layer.cropBounds.x;
const effectiveCropY = layer.flipV
? layer.originalHeight - (layer.cropBounds.y + layer.cropBounds.height)
: layer.cropBounds.y;
// Center of the CROP rectangle in the layer's local, un-rotated space
const cropCenterX_local = (-layer.width / 2) + ((layer.cropBounds.x + layer.cropBounds.width / 2) * layerScaleX);
const cropCenterY_local = (-layer.height / 2) + ((layer.cropBounds.y + layer.cropBounds.height / 2) * layerScaleY);
const cropCenterX_local = (-layer.width / 2) + ((effectiveCropX + layer.cropBounds.width / 2) * layerScaleX);
const cropCenterY_local = (-layer.height / 2) + ((effectiveCropY + layer.cropBounds.height / 2) * layerScaleY);
// Rotate this local center to find the world-space center of the crop rect
handleCenterX = layerCenterX + (cropCenterX_local * cos - cropCenterY_local * sin);
handleCenterY = layerCenterY + (cropCenterX_local * sin + cropCenterY_local * cos);