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Fix selection border points for vertical/horizontal flip

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This commit is contained in:
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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42
src/CanvasInteractions.ts
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@@ -857,8 +857,15 @@ export class CanvasInteractions {
// Rotate mouse delta into the layer's unrotated frame
const deltaX_world = mouseX_local - dragStartX_local;
const deltaY_world = mouseY_local - dragStartY_local;
const mouseDeltaX_local = deltaX_world * cos + deltaY_world * sin;
const mouseDeltaY_local = deltaY_world * cos - deltaX_world * sin;
let mouseDeltaX_local = deltaX_world * cos + deltaY_world * sin;
let mouseDeltaY_local = deltaY_world * cos - deltaX_world * sin;
if (layer.flipH) {
mouseDeltaX_local *= -1;
}
if (layer.flipV) {
mouseDeltaY_local *= -1;
}
// Convert the on-screen mouse delta to an image-space delta.
const screenToImageScaleX = o.originalWidth / o.width;
@@ -870,22 +877,37 @@ export class CanvasInteractions {
let newCropBounds = { ...o.cropBounds }; // Start with the bounds from the beginning of the drag
// Apply the image-space delta to the appropriate edges of the crop bounds
const isFlippedH = layer.flipH;
const isFlippedV = layer.flipV;
if (handle?.includes('w')) {
newCropBounds.x += delta_image_x;
newCropBounds.width -= delta_image_x;
if (isFlippedH) newCropBounds.width += delta_image_x;
else {
newCropBounds.x += delta_image_x;
newCropBounds.width -= delta_image_x;
}
}
if (handle?.includes('e')) {
newCropBounds.width += delta_image_x;
if (isFlippedH) {
newCropBounds.x += delta_image_x;
newCropBounds.width -= delta_image_x;
} else newCropBounds.width += delta_image_x;
}
if (handle?.includes('n')) {
newCropBounds.y += delta_image_y;
newCropBounds.height -= delta_image_y;
if (isFlippedV) newCropBounds.height += delta_image_y;
else {
newCropBounds.y += delta_image_y;
newCropBounds.height -= delta_image_y;
}
}
if (handle?.includes('s')) {
newCropBounds.height += delta_image_y;
if (isFlippedV) {
newCropBounds.y += delta_image_y;
newCropBounds.height -= delta_image_y;
} else newCropBounds.height += delta_image_y;
}
// Clamp crop bounds to stay within the original image and maintain minimum size
// Clamp crop bounds to stay within the original image and maintain minimum size
if (newCropBounds.width < 1) {
if (handle?.includes('w')) newCropBounds.x = o.cropBounds.x + o.cropBounds.width -1;
newCropBounds.width = 1;