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[as3] Clipping fix, see #1219

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badlogic 2018-12-05 16:27:20 +01:00
parent 183973cfd6
commit ea4685be8b
4 changed files with 19 additions and 7 deletions
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spine-as3/spine-as3-example/lib/spine-as3.swc
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spine-as3/spine-as3/src/spine/SkeletonClipping.as
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@ -212,7 +212,7 @@ package spine {
var clippingVertices : Vector.<Number> = clippingArea;
var clippingVerticesLast : int = clippingArea.length - 4;
var c0 : Number, c2 : Number, ua : Number;
var c0 : Number, c2 : Number, s : Number, ua : Number;
var i : int, n : int;
for (i = 0;; i += 2) {
var edgeX : Number = clippingVertices[i], edgeY : Number = clippingVertices[i + 1];
@ -233,14 +233,26 @@ package spine {
}
// v1 inside, v2 outside
c0 = inputY2 - inputY; c2 = inputX2 - inputX;
ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
output.push(edgeX + (edgeX2 - edgeX) * ua);
output.push(edgeY + (edgeY2 - edgeY) * ua);
s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
if (Math.abs(s) > 0.000001) {
ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
output.push(edgeX + (edgeX2 - edgeX) * ua);
output.push(edgeY + (edgeY2 - edgeY) * ua);
} else {
output.push(edgeX);
output.push(edgeY);
}
} else if (side2) { // v1 outside, v2 inside
c0 = inputY2 - inputY, c2 = inputX2 - inputX;
ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
output.push(edgeX + (edgeX2 - edgeX) * ua);
output.push(edgeY + (edgeY2 - edgeY) * ua);
s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
if (Math.abs(s) > 0.000001) {
ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
output.push(edgeX + (edgeX2 - edgeX) * ua);
output.push(edgeY + (edgeY2 - edgeY) * ua);
} else {
output.push(edgeX);
output.push(edgeY);
}
output.push(inputX2);
output.push(inputY2);
}

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spine-starling/spine-starling-example/lib/spine-as3.swc
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spine-starling/spine-starling/lib/spine-as3.swc
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