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line tool symmetry

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This commit is contained in:
Marco Marinò 2022-02-05 13:32:53 +01:00
parent c5113db10c
commit c47686e4c8
1 changed files with 41 additions and 0 deletions
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41
js/tools/LineTool.js
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@ -77,6 +77,47 @@ class LineTool extends ResizableTool {
while (true) {
context.fillRect(x0-Math.floor(this.currSize/2), y0-Math.floor(this.currSize/2), this.currSize, this.currSize);
// handle symmetry
let midY = (currFile.canvasSize[1] / 2);
let midX = (currFile.canvasSize[0] / 2);
let mirrorX, mirrorY;
if (currFile.hSymmetricLayer.isEnabled) {
if (y0 <= midY) {
mirrorY = Math.floor(midY + Math.abs(midY - y0));
} else {
mirrorY = Math.floor(midY - Math.abs(midY - y0));
}
mirrorY -= (this.currSize % 2 === 0) ? 0 : 1;
context.fillRect(
x0 - Math.floor(this.currSize/2),
mirrorY - Math.floor(this.currSize/2),
this.currSize, this.currSize
);
}
if (currFile.vSymmetricLayer.isEnabled) {
if (x0 <= midX) {
mirrorX = Math.floor(midX + Math.abs(midX - x0));
} else {
mirrorX = Math.floor(midX - Math.abs(midX - x0));
}
mirrorX -= (this.currSize % 2 === 0) ? 0 : 1;
context.fillRect(
mirrorX - Math.floor(this.currSize/2),
y0 - Math.floor(this.currSize/2),
this.currSize, this.currSize
);
}
if (currFile.hSymmetricLayer.isEnabled && currFile.vSymmetricLayer.isEnabled) {
context.fillRect(
mirrorX - Math.floor(this.currSize/2),
mirrorY - Math.floor(this.currSize/2),
this.currSize, this.currSize
);
}
//if we've reached the end goal, exit the loop
if ((x0==x1) && (y0==y1)) break;
var e2 = 2*err;