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[csharp] Ported clipping fixes for colinear points (a0caef6 and 932c33a). See #2546.

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This commit is contained in:
Harald Csaszar 2024-06-10 18:29:54 +02:00
parent 932c33a251
commit 534d174f32
2 changed files with 29 additions and 29 deletions
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56
spine-csharp/src/SkeletonClipping.cs
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@ -259,49 +259,49 @@ namespace Spine {
input.Add(y1);
output.Clear();
float[] clippingVertices = clippingArea.Items;
int clippingVerticesLast = clippingArea.Count - 4;
float[] clippingVertices = clippingArea.Items;
for (int i = 0; ; i += 2) {
float edgeX = clippingVertices[i], edgeY = clippingVertices[i + 1];
float edgeX2 = clippingVertices[i + 2], edgeY2 = clippingVertices[i + 3];
float deltaX = edgeX - edgeX2, deltaY = edgeY - edgeY2;
float ex = edgeX - clippingVertices[i + 2], ey = edgeY - clippingVertices[i + 3];
int outputStart = output.Count;
float[] inputVertices = input.Items;
int inputVerticesLength = input.Count - 2, outputStart = output.Count;
for (int ii = 0; ii < inputVerticesLength; ii += 2) {
for (int ii = 0, nn = input.Count - 2; ii < nn;) {
float inputX = inputVertices[ii], inputY = inputVertices[ii + 1];
float inputX2 = inputVertices[ii + 2], inputY2 = inputVertices[ii + 3];
bool side2 = deltaX * (inputY2 - edgeY2) - deltaY * (inputX2 - edgeX2) > 0;
if (deltaX * (inputY - edgeY2) - deltaY * (inputX - edgeX2) > 0) {
if (side2) { // v1 inside, v2 inside
ii += 2;
float inputX2 = inputVertices[ii], inputY2 = inputVertices[ii + 1];
bool s2 = ey * (edgeX - inputX2) > ex * (edgeY - inputY2);
float s1 = ey * (edgeX - inputX) - ex * (edgeY - inputY);
if (s1 > 0) {
if (s2) { // v1 inside, v2 inside
output.Add(inputX2);
output.Add(inputY2);
continue;
}
// v1 inside, v2 outside
float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
if (Math.Abs(s) > 0.000001f) {
float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
output.Add(edgeX + (edgeX2 - edgeX) * ua);
output.Add(edgeY + (edgeY2 - edgeY) * ua);
float ix = inputX2 - inputX, iy = inputY2 - inputY, t = s1 / (ix * ey - iy * ex);
if (t >= 0 && t <= 1) {
output.Add(inputX + ix * t);
output.Add(inputY + iy * t);
} else {
output.Add(edgeX);
output.Add(edgeY);
output.Add(inputX2);
output.Add(inputY2);
continue;
}
} else if (side2) { // v1 outside, v2 inside
float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
if (Math.Abs(s) > 0.000001f) {
float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
output.Add(edgeX + (edgeX2 - edgeX) * ua);
output.Add(edgeY + (edgeY2 - edgeY) * ua);
} else if (s2) { // v1 outside, v2 inside
float ix = inputX2 - inputX, iy = inputY2 - inputY, t = s1 / (ix * ey - iy * ex);
if (t >= 0 && t <= 1) {
output.Add(inputX + ix * t);
output.Add(inputY + iy * t);
output.Add(inputX2);
output.Add(inputY2);
} else {
output.Add(edgeX);
output.Add(edgeY);
output.Add(inputX2);
output.Add(inputY2);
continue;
}
output.Add(inputX2);
output.Add(inputY2);
}
clipped = true;
}

2
spine-csharp/src/package.json
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@ -2,7 +2,7 @@
"name": "com.esotericsoftware.spine.spine-csharp",
"displayName": "spine-csharp Runtime",
"description": "This plugin provides the spine-csharp core runtime.",
"version": "4.2.24",
"version": "4.2.25",
"unity": "2018.3",
"author": {
"name": "Esoteric Software",