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Fixed bug that deleted the underlying pixels when confirming a selection

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This commit is contained in:
unsettledgames
2020-03-07 23:13:35 +01:00
parent 9324a6a57e
commit 378e0f0cd0
5 changed files with 37 additions and 2 deletions
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28
js/_move.js
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@@ -1,6 +1,7 @@
var imageDataToMove;
var canMoveSelection = false;
var lastMovePos;
var selectionCanceled = false;
// TODO: move with arrows
function updateMovePreview(mouseEvent) {
@@ -24,12 +25,37 @@ function endSelection() {
// for every element in the selected data
// if the current pixel is empty
// copy the pixel in the selected data
TMPLayer.context.clearRect(0, 0, TMPLayer.canvas.width, TMPLayer.canvas.height);
VFXLayer.context.clearRect(0, 0, VFXLayer.canvas.width, VFXLayer.canvas.height);
let underlyingImageData = currentLayer.context.getImageData(startX, startY, endX - startX, endY - startY);
for (let i=0; i<underlyingImageData.data.length; i+=4) {
let currentMovePixel = [
imageDataToMove.data[i], imageDataToMove.data[i+1],
imageDataToMove.data[i+2], imageDataToMove.data[i+3]
];
let currentUnderlyingPixel = [
underlyingImageData.data[i], underlyingImageData.data[i+1],
underlyingImageData.data[i+2], underlyingImageData.data[i+3]
];
if (isPixelEmpty(currentMovePixel)) {
if (!isPixelEmpty(underlyingImageData)) {
imageDataToMove.data[i] = currentUnderlyingPixel[0];
imageDataToMove.data[i+1] = currentUnderlyingPixel[1];
imageDataToMove.data[i+2] = currentUnderlyingPixel[2];
imageDataToMove.data[i+3] = currentUnderlyingPixel[3];
}
}
}
currentLayer.context.putImageData(
imageDataToMove,
Math.round(lastMovePos[0] / zoom - imageDataToMove.width / 2),
Math.round(lastMovePos[1] / zoom - imageDataToMove.height / 2));
selectionCanceled = true;
}