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Merge pull request #154 from abies/master

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Speedup for TangengBinormalGenerator
experimental
Rémy Bouquet 10 years ago
parent 3d720e164e a6827ead5a
commit d74d5e6ca9
1 changed files with 107 additions and 58 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 165
      jme3-core/src/main/java/com/jme3/util/TangentBinormalGenerator.java

165
jme3-core/src/main/java/com/jme3/util/TangentBinormalGenerator.java
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@ -40,7 +40,9 @@ import com.jme3.scene.VertexBuffer.Format;
import com.jme3.scene.VertexBuffer.Type;
import com.jme3.scene.VertexBuffer.Usage;
import com.jme3.scene.mesh.IndexBuffer;
import static com.jme3.util.BufferUtils.*;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.DoubleBuffer;
@ -49,8 +51,12 @@ import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;
@ -147,6 +153,44 @@ public class TangentBinormalGenerator {
generate(scene, false);
}
public static void generateParallel(Spatial scene, ExecutorService executor) {
final Set<Mesh> meshes = new HashSet<Mesh>();
scene.breadthFirstTraversal(new SceneGraphVisitor() {
@Override
public void visit(Spatial spatial) {
if (spatial instanceof Geometry) {
Geometry geom = (Geometry) spatial;
Mesh mesh = geom.getMesh();
// Check to ensure mesh has texcoords and normals before generating
if (mesh.getBuffer(Type.TexCoord) != null
&& mesh.getBuffer(Type.Normal) != null) {
meshes.add(mesh);
}
}
}
});
List<Future<?>> futures = new ArrayList<Future<?>>();
for (final Mesh m : meshes) {
futures.add(executor.submit(new Runnable() {
@Override
public void run() {
generate(m, true, false);
}
}));
}
for (Future<?> f : futures) {
try {
f.get();
} catch (Exception exc) {
log.log(Level.WARNING, "Error while computing tangents", exc);
}
}
}
public static void generate(Mesh mesh, boolean approxTangents, boolean splitMirrored) {
int[] index = new int[3];
Vector3f[] v = new Vector3f[3];
@ -512,67 +556,72 @@ public class TangentBinormalGenerator {
public static TriangleData processTriangle(int[] index,
Vector3f[] v, Vector2f[] t) {
Vector3f edge1 = new Vector3f();
Vector3f edge2 = new Vector3f();
Vector2f edge1uv = new Vector2f();
Vector2f edge2uv = new Vector2f();
Vector3f tangent = new Vector3f();
Vector3f binormal = new Vector3f();
Vector3f normal = new Vector3f();
t[1].subtract(t[0], edge1uv);
t[2].subtract(t[0], edge2uv);
float det = edge1uv.x * edge2uv.y - edge1uv.y * edge2uv.x;
boolean normalize = false;
if (Math.abs(det) < ZERO_TOLERANCE) {
log.log(Level.WARNING, "Colinear uv coordinates for triangle "
+ "[{0}, {1}, {2}]; tex0 = [{3}, {4}], "
+ "tex1 = [{5}, {6}], tex2 = [{7}, {8}]",
new Object[]{index[0], index[1], index[2],
t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y});
det = 1;
normalize = true;
}
v[1].subtract(v[0], edge1);
v[2].subtract(v[0], edge2);
tangent.set(edge1);
tangent.normalizeLocal();
binormal.set(edge2);
binormal.normalizeLocal();
if (Math.abs(Math.abs(tangent.dot(binormal)) - 1)
< ZERO_TOLERANCE) {
log.log(Level.WARNING, "Vertices are on the same line "
+ "for triangle [{0}, {1}, {2}].",
new Object[]{index[0], index[1], index[2]});
}
float factor = 1 / det;
tangent.x = (edge2uv.y * edge1.x - edge1uv.y * edge2.x) * factor;
tangent.y = (edge2uv.y * edge1.y - edge1uv.y * edge2.y) * factor;
tangent.z = (edge2uv.y * edge1.z - edge1uv.y * edge2.z) * factor;
if (normalize) {
TempVars tmp = TempVars.get();
try {
Vector3f edge1 = tmp.vect1;
Vector3f edge2 = tmp.vect2;
Vector2f edge1uv = tmp.vect2d;
Vector2f edge2uv = tmp.vect2d2;
Vector3f tangent = tmp.vect3;
Vector3f binormal = tmp.vect4;
Vector3f normal = tmp.vect5;
t[1].subtract(t[0], edge1uv);
t[2].subtract(t[0], edge2uv);
float det = edge1uv.x * edge2uv.y - edge1uv.y * edge2uv.x;
boolean normalize = false;
if (Math.abs(det) < ZERO_TOLERANCE) {
log.log(Level.WARNING, "Colinear uv coordinates for triangle "
+ "[{0}, {1}, {2}]; tex0 = [{3}, {4}], "
+ "tex1 = [{5}, {6}], tex2 = [{7}, {8}]",
new Object[]{index[0], index[1], index[2],
t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y});
det = 1;
normalize = true;
}
v[1].subtract(v[0], edge1);
v[2].subtract(v[0], edge2);
tangent.set(edge1);
tangent.normalizeLocal();
}
binormal.x = (edge1uv.x * edge2.x - edge2uv.x * edge1.x) * factor;
binormal.y = (edge1uv.x * edge2.y - edge2uv.x * edge1.y) * factor;
binormal.z = (edge1uv.x * edge2.z - edge2uv.x * edge1.z) * factor;
if (normalize) {
binormal.set(edge2);
binormal.normalizeLocal();
if (Math.abs(Math.abs(tangent.dot(binormal)) - 1)
< ZERO_TOLERANCE) {
log.log(Level.WARNING, "Vertices are on the same line "
+ "for triangle [{0}, {1}, {2}].",
new Object[]{index[0], index[1], index[2]});
}
float factor = 1 / det;
tangent.x = (edge2uv.y * edge1.x - edge1uv.y * edge2.x) * factor;
tangent.y = (edge2uv.y * edge1.y - edge1uv.y * edge2.y) * factor;
tangent.z = (edge2uv.y * edge1.z - edge1uv.y * edge2.z) * factor;
if (normalize) {
tangent.normalizeLocal();
}
binormal.x = (edge1uv.x * edge2.x - edge2uv.x * edge1.x) * factor;
binormal.y = (edge1uv.x * edge2.y - edge2uv.x * edge1.y) * factor;
binormal.z = (edge1uv.x * edge2.z - edge2uv.x * edge1.z) * factor;
if (normalize) {
binormal.normalizeLocal();
}
tangent.cross(binormal, normal);
normal.normalizeLocal();
return new TriangleData(
tangent,
binormal,
normal);
} finally {
tmp.release();
}
tangent.cross(binormal, normal);
normal.normalizeLocal();
return new TriangleData(
tangent,
binormal,
normal);
}
public static void setToleranceAngle(float angle) {

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