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https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-06 07:14:55 +08:00
[libgdx] Added convex decomposition to SkeletonRenderer.
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badlogic
parent
b8a603d6af
commit
ace38dca5f
@ -90,13 +90,13 @@ public class ClippingTest extends ApplicationAdapter {
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ClippingAttachment clip = new ClippingAttachment("clip");
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// Rectangle:
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clip.setVertices(
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new float[] { 87, 288, 217, 371, 456, 361, 539, 175, 304, 194, 392, 290, 193, 214, 123, 15, 14, 137 });
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// new float[] { //
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// -140, 50, //
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// 250, 50, //
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// 250, 350, //
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// -140, 350, //
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// });
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// new float[] { 87, 288, 217, 371, 456, 361, 539, 175, 304, 194, 392, 290, 193, 214, 123, 15, 14, 137 });
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new float[] { //
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-140, 50, //
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250, 50, //
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250, 350, //
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-140, 350, //
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});
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// Self intersection:
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// clip.setVertices(new float[] { //
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// -140, -50, //
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@ -49,6 +49,7 @@ import com.esotericsoftware.spine.attachments.MeshAttachment;
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import com.esotericsoftware.spine.attachments.RegionAttachment;
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import com.esotericsoftware.spine.attachments.SkeletonAttachment;
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import com.esotericsoftware.spine.utils.Clipper;
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import com.esotericsoftware.spine.utils.ConvexDecomposer;
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import com.esotericsoftware.spine.utils.TwoColorPolygonBatch;
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public class SkeletonRenderer {
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@ -57,12 +58,13 @@ public class SkeletonRenderer {
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private boolean softwareClipping;
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private boolean premultipliedAlpha;
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private final FloatArray vertices = new FloatArray(32);
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private Clipper clipper = new Clipper();
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private ClippingAttachment clipAttachment;
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private Slot clipEnd;
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private FloatArray clippingArea = new FloatArray();
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private boolean clippingAreaClockwise;
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private Clipper clipper = new Clipper();
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private ConvexDecomposer decomposer = new ConvexDecomposer();
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private FloatArray clippingPolygon = new FloatArray(400);
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private Array<FloatArray> convexClippingPolygons;
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private FloatArray clipOutput = new FloatArray(400);
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private FloatArray clippedVertices = new FloatArray(400);
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private ShortArray clippedTriangles = new ShortArray(400);
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@ -404,18 +406,22 @@ public class SkeletonRenderer {
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Gdx.gl.glStencilOp(GL20.GL_KEEP, GL20.GL_KEEP, GL20.GL_KEEP);
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} else {
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int n = clip.getWorldVerticesLength();
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float[] vertices = this.clippingArea.setSize(n);
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float[] vertices = this.clippingPolygon.setSize(n);
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clip.computeWorldVertices(slot, 0, n, vertices, 0, 2);
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clippingAreaClockwise = Clipper.isClockwise(this.clippingArea);
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if (!clippingAreaClockwise) {
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Clipper.makeClockwise(clippingArea);
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convexClippingPolygons = decomposer.decompose(clippingPolygon);
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for (FloatArray poly: convexClippingPolygons) {
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Clipper.makeClockwise(poly);
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poly.add(poly.items[0]);
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poly.add(poly.items[1]);
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}
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clippingArea.add(clippingArea.items[0]);
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clippingArea.add(clippingArea.items[1]);
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}
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}
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private void clipEnd() {
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clippedVertices.clear();
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clippedTriangles.clear();
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clippingPolygon.clear();
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convexClippingPolygons = null;
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clipAttachment = null;
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clipEnd = null;
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if (!softwareClipping) Gdx.gl.glDisable(GL20.GL_STENCIL_TEST);
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@ -425,124 +431,126 @@ public class SkeletonRenderer {
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short idx = 0;
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clippedVertices.clear();
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clippedTriangles.clear();
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for (int i = 0; i < trianglesLength; i += 3) {
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int vertexOffset = triangles[i] << 1;
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float x1 = vertices[vertexOffset];
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float y1= vertices[vertexOffset + 1];
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float u1 = uvs[vertexOffset];
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float v1 = uvs[vertexOffset + 1];
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vertexOffset = triangles[i + 1] << 1;
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float x2 = vertices[vertexOffset];
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float y2 = vertices[vertexOffset + 1];
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float u2 = uvs[vertexOffset];
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float v2 = uvs[vertexOffset + 1];
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vertexOffset = triangles[i + 2] << 1;
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float x3 = vertices[vertexOffset];
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float y3 = vertices[vertexOffset + 1];
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float u3 = uvs[vertexOffset];
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float v3 = uvs[vertexOffset + 1];
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boolean clipped = clipper.clip(x1, y1, x2, y2, x3, y3, clippingArea, clipOutput);
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if (clipped) {
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if (clipOutput.size == 0) continue;
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float d0 = y2 - y3;
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float d1 = x3 - x2;
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float d2 = x1 - x3;
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float d3 = y1 - y3;
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float d4 = y3 - y1;
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for (FloatArray convexClippingPolygon: convexClippingPolygons) {
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for (int i = 0; i < trianglesLength; i += 3) {
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int vertexOffset = triangles[i] << 1;
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float x1 = vertices[vertexOffset];
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float y1= vertices[vertexOffset + 1];
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float u1 = uvs[vertexOffset];
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float v1 = uvs[vertexOffset + 1];
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float denom = 1 / (d0 * d2 + d1 * d3);
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vertexOffset = triangles[i + 1] << 1;
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float x2 = vertices[vertexOffset];
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float y2 = vertices[vertexOffset + 1];
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float u2 = uvs[vertexOffset];
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float v2 = uvs[vertexOffset + 1];
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float[] clipVertices = clipOutput.items;
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int s = clippedVertices.size;
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clippedVertices.setSize(s + (clipOutput.size >> 1) * (twoColor ? 6 : 5));
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final float[] clippedVerticesArray = clippedVertices.items;
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vertexOffset = triangles[i + 2] << 1;
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float x3 = vertices[vertexOffset];
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float y3 = vertices[vertexOffset + 1];
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float u3 = uvs[vertexOffset];
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float v3 = uvs[vertexOffset + 1];
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for (int j = 0, n = clipOutput.size; j < n; j += 2) {
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float x = clipVertices[j];
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float y = clipVertices[j + 1];
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boolean clipped = clipper.clip(x1, y1, x2, y2, x3, y3, convexClippingPolygon, clipOutput);
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if (clipped) {
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if (clipOutput.size == 0) continue;
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float d0 = y2 - y3;
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float d1 = x3 - x2;
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float d2 = x1 - x3;
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float d3 = y1 - y3;
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float d4 = y3 - y1;
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float denom = 1 / (d0 * d2 + d1 * d3);
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float[] clipVertices = clipOutput.items;
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int s = clippedVertices.size;
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clippedVertices.setSize(s + (clipOutput.size >> 1) * (twoColor ? 6 : 5));
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final float[] clippedVerticesArray = clippedVertices.items;
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for (int j = 0, n = clipOutput.size; j < n; j += 2) {
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float x = clipVertices[j];
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float y = clipVertices[j + 1];
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float c0 = x - x3;
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float c1 = y - y3;
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float a = (d0 * c0 + d1 * c1) * denom;
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float b = (d4 * c0 + d2 * c1) * denom;
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float c = 1.0f - a - b;
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float c0 = x - x3;
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float c1 = y - y3;
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float a = (d0 * c0 + d1 * c1) * denom;
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float b = (d4 * c0 + d2 * c1) * denom;
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float c = 1.0f - a - b;
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float u = u1 * a + u2 * b + u3 * c;
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float v = v1 * a + v2 * b + v3 * c;
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clippedVerticesArray[s++] = x;
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clippedVerticesArray[s++] = y;
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clippedVerticesArray[s++] = light;
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if (twoColor) clippedVerticesArray[s++] = dark;
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clippedVerticesArray[s++] = u;
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clippedVerticesArray[s++] = v;
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}
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float u = u1 * a + u2 * b + u3 * c;
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float v = v1 * a + v2 * b + v3 * c;
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clippedVerticesArray[s++] = x;
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clippedVerticesArray[s++] = y;
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clippedVerticesArray[s++] = light;
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if (twoColor) clippedVerticesArray[s++] = dark;
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clippedVerticesArray[s++] = u;
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clippedVerticesArray[s++] = v;
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}
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s = clippedTriangles.size;
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clippedTriangles.setSize(s + 3 * ((clipOutput.size >> 1) - 2));
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final short[] clippedTrianglesArray = clippedTriangles.items;
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for (int j = 1, n = (clipOutput.size >> 1) - 1; j < n; j++) {
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clippedTrianglesArray[s++] = idx;
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clippedTrianglesArray[s++] = (short)(idx + j);
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clippedTrianglesArray[s++] = (short)(idx + j + 1);
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}
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idx += clipOutput.size >> 1;
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} else {
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int s = clippedVertices.size;
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clippedVertices.setSize(s + 3 * (twoColor ? 6 : 5));
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final float[] clippedVerticesArray = clippedVertices.items;
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if (!twoColor) {
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clippedVerticesArray[s] = x1;
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clippedVerticesArray[s + 1] = y1;
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clippedVerticesArray[s + 2] = light;
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clippedVerticesArray[s + 3] = u1;
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clippedVerticesArray[s + 4] = v1;
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s = clippedTriangles.size;
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clippedTriangles.setSize(s + 3 * ((clipOutput.size >> 1) - 2));
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final short[] clippedTrianglesArray = clippedTriangles.items;
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clippedVerticesArray[s + 5] = x2;
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clippedVerticesArray[s + 6] = y2;
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clippedVerticesArray[s + 7] = light;
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clippedVerticesArray[s + 8] = u2;
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clippedVerticesArray[s + 9] = v2;
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for (int j = 1, n = (clipOutput.size >> 1) - 1; j < n; j++) {
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clippedTrianglesArray[s++] = idx;
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clippedTrianglesArray[s++] = (short)(idx + j);
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clippedTrianglesArray[s++] = (short)(idx + j + 1);
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}
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clippedVerticesArray[s + 10] = x3;
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clippedVerticesArray[s + 11] = y3;
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clippedVerticesArray[s + 12] = light;
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clippedVerticesArray[s + 13] = u3;
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clippedVerticesArray[s + 14] = v3;
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idx += clipOutput.size >> 1;
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} else {
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clippedVerticesArray[s] = x1;
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clippedVerticesArray[s + 1] = y1;
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clippedVerticesArray[s + 2] = light;
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clippedVerticesArray[s + 3] = dark;
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clippedVerticesArray[s + 4] = u1;
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clippedVerticesArray[s + 5] = v1;
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int s = clippedVertices.size;
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clippedVertices.setSize(s + 3 * (twoColor ? 6 : 5));
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final float[] clippedVerticesArray = clippedVertices.items;
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clippedVerticesArray[s + 6] = x2;
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clippedVerticesArray[s + 7] = y2;
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clippedVerticesArray[s + 8] = light;
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clippedVerticesArray[s + 9] = dark;
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clippedVerticesArray[s + 10] = u2;
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clippedVerticesArray[s + 11] = v2;
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if (!twoColor) {
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clippedVerticesArray[s] = x1;
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clippedVerticesArray[s + 1] = y1;
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clippedVerticesArray[s + 2] = light;
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clippedVerticesArray[s + 3] = u1;
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clippedVerticesArray[s + 4] = v1;
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clippedVerticesArray[s + 5] = x2;
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clippedVerticesArray[s + 6] = y2;
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clippedVerticesArray[s + 7] = light;
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clippedVerticesArray[s + 8] = u2;
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clippedVerticesArray[s + 9] = v2;
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clippedVerticesArray[s + 10] = x3;
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clippedVerticesArray[s + 11] = y3;
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clippedVerticesArray[s + 12] = light;
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clippedVerticesArray[s + 13] = u3;
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clippedVerticesArray[s + 14] = v3;
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} else {
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clippedVerticesArray[s] = x1;
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clippedVerticesArray[s + 1] = y1;
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clippedVerticesArray[s + 2] = light;
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clippedVerticesArray[s + 3] = dark;
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clippedVerticesArray[s + 4] = u1;
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clippedVerticesArray[s + 5] = v1;
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clippedVerticesArray[s + 6] = x2;
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clippedVerticesArray[s + 7] = y2;
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clippedVerticesArray[s + 8] = light;
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clippedVerticesArray[s + 9] = dark;
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clippedVerticesArray[s + 10] = u2;
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clippedVerticesArray[s + 11] = v2;
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clippedVerticesArray[s + 12] = x3;
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clippedVerticesArray[s + 13] = y3;
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clippedVerticesArray[s + 14] = light;
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clippedVerticesArray[s + 15] = dark;
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clippedVerticesArray[s + 16] = u3;
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clippedVerticesArray[s + 17] = v3;
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}
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clippedVerticesArray[s + 12] = x3;
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clippedVerticesArray[s + 13] = y3;
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clippedVerticesArray[s + 14] = light;
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clippedVerticesArray[s + 15] = dark;
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clippedVerticesArray[s + 16] = u3;
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clippedVerticesArray[s + 17] = v3;
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s = clippedTriangles.size;
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clippedTriangles.setSize(s + 3);
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final short[] clippedTrianglesArray = clippedTriangles.items;
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clippedTrianglesArray[s] = idx++;
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clippedTrianglesArray[s + 1] = idx++;
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clippedTrianglesArray[s + 2] = idx++;
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}
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s = clippedTriangles.size;
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clippedTriangles.setSize(s + 3);
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final short[] clippedTrianglesArray = clippedTriangles.items;
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clippedTrianglesArray[s] = idx++;
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clippedTrianglesArray[s + 1] = idx++;
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clippedTrianglesArray[s + 2] = idx++;
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}
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}
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}
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