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Bugfix: fixed issues with subdivision surface modifier.

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experimental
kaelthas 10 years ago
parent 3992ed89af
commit 550063367e
2 changed files with 50 additions and 29 deletions
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  1. 32
      jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/TemporalMesh.java
  2. 47
      jme3-blender/src/main/java/com/jme3/scene/plugins/blender/modifiers/SubdivisionSurfaceModifier.java

32
jme3-blender/src/main/java/com/jme3/scene/plugins/blender/meshes/TemporalMesh.java
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@ -4,11 +4,14 @@ import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
@ -71,9 +74,10 @@ public class TemporalMesh extends Geometry {
protected List<Edge> edges = new ArrayList<Edge>();
/** The points of the mesh. */
protected List<Point> points = new ArrayList<Point>();
protected Map<Integer, List<Face>> indexToFaceMapping = new HashMap<Integer, List<Face>>();
protected Map<Integer, List<Edge>> indexToEdgeMapping = new HashMap<Integer, List<Edge>>();
/** A map between index and faces that contain it (for faster index - face queries). */
protected Map<Integer, Set<Face>> indexToFaceMapping = new HashMap<Integer, Set<Face>>();
/** A map between index and edges that contain it (for faster index - edge queries). */
protected Map<Integer, Set<Edge>> indexToEdgeMapping = new HashMap<Integer, Set<Edge>>();
/** The bounding box of the temporal mesh. */
protected BoundingBox boundingBox;
@ -183,7 +187,7 @@ public class TemporalMesh extends Geometry {
/**
* @return the faces that contain the given index or null if none contain it
*/
public List<Face> getAdjacentFaces(Integer index) {
public Collection<Face> getAdjacentFaces(Integer index) {
return indexToFaceMapping.get(index);
}
@ -192,10 +196,10 @@ public class TemporalMesh extends Geometry {
* edge of the mesh
* @return a list of faces that contain the given edge or an empty list
*/
public List<Face> getAdjacentFaces(Edge edge) {
public Collection<Face> getAdjacentFaces(Edge edge) {
List<Face> result = new ArrayList<Face>(indexToFaceMapping.get(edge.getFirstIndex()));
List<Face> secondIndexAdjacentFaces = indexToFaceMapping.get(edge.getSecondIndex());
if(secondIndexAdjacentFaces != null) {
Set<Face> secondIndexAdjacentFaces = indexToFaceMapping.get(edge.getSecondIndex());
if (secondIndexAdjacentFaces != null) {
result.retainAll(indexToFaceMapping.get(edge.getSecondIndex()));
}
return result;
@ -206,7 +210,7 @@ public class TemporalMesh extends Geometry {
* index of the mesh
* @return a list of edges that contain the index
*/
public List<Edge> getAdjacentEdges(Integer index) {
public Collection<Edge> getAdjacentEdges(Integer index) {
return indexToEdgeMapping.get(index);
}
@ -229,7 +233,7 @@ public class TemporalMesh extends Geometry {
* @return <b>true</b> if the index is a boundary one and <b>false</b> otherwise
*/
public boolean isBoundary(Integer index) {
List<Edge> adjacentEdges = this.getAdjacentEdges(index);
Collection<Edge> adjacentEdges = this.getAdjacentEdges(index);
for (Edge edge : adjacentEdges) {
if (this.isBoundary(edge)) {
return true;
@ -287,24 +291,24 @@ public class TemporalMesh extends Geometry {
indexToFaceMapping.clear();
for (Face face : faces) {
for (Integer index : face.getIndexes()) {
List<Face> faces = indexToFaceMapping.get(index);
Set<Face> faces = indexToFaceMapping.get(index);
if (faces == null) {
faces = new ArrayList<Face>();
faces = new HashSet<Face>();
indexToFaceMapping.put(index, faces);
}
faces.add(face);
}
}
for (Edge edge : edges) {
List<Edge> edges = indexToEdgeMapping.get(edge.getFirstIndex());
Set<Edge> edges = indexToEdgeMapping.get(edge.getFirstIndex());
if (edges == null) {
edges = new ArrayList<Edge>();
edges = new HashSet<Edge>();
indexToEdgeMapping.put(edge.getFirstIndex(), edges);
}
edges.add(edge);
edges = indexToEdgeMapping.get(edge.getSecondIndex());
if (edges == null) {
edges = new ArrayList<Edge>();
edges = new HashSet<Edge>();
indexToEdgeMapping.put(edge.getSecondIndex(), edges);
}
edges.add(edge);

47
jme3-blender/src/main/java/com/jme3/scene/plugins/blender/modifiers/SubdivisionSurfaceModifier.java
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@ -4,6 +4,7 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
@ -41,8 +42,8 @@ public class SubdivisionSurfaceModifier extends Modifier {
private int levels;
/** Indicates if the UV's should also be subdivided. */
private boolean subdivideUVS;
private List<Integer> verticesOnOriginalEdges = new ArrayList<Integer>();
/** Stores the vertices that are located on original edges of the mesh. */
private Set<Integer> verticesOnOriginalEdges = new HashSet<Integer>();
/**
* Constructor loads all neccessary modifier data.
@ -77,7 +78,8 @@ public class SubdivisionSurfaceModifier extends Modifier {
TemporalMesh temporalMesh = this.getTemporalMesh(node);
if (temporalMesh != null) {
LOGGER.log(Level.FINE, "Applying subdivision surface modifier to: {0}", temporalMesh);
verticesOnOriginalEdges.clear();//in case the instance of this class was used more than once
for (Edge edge : temporalMesh.getEdges()) {
verticesOnOriginalEdges.add(edge.getFirstIndex());
verticesOnOriginalEdges.add(edge.getSecondIndex());
@ -109,10 +111,16 @@ public class SubdivisionSurfaceModifier extends Modifier {
*/
private void subdivideCatmullClark(TemporalMesh temporalMesh) {
Set<Integer> boundaryVertices = new HashSet<Integer>();
for (Face face : temporalMesh.getFaces()) {
for (Integer index : face.getIndexes()) {
if (temporalMesh.isBoundary(index)) {
boundaryVertices.add(index);
for (Edge edge : temporalMesh.getEdges()) {
if (!edge.isInFace()) {
boundaryVertices.add(edge.getFirstIndex());
boundaryVertices.add(edge.getSecondIndex());
} else {
if (temporalMesh.isBoundary(edge.getFirstIndex())) {
boundaryVertices.add(edge.getFirstIndex());
}
if (temporalMesh.isBoundary(edge.getSecondIndex())) {
boundaryVertices.add(edge.getSecondIndex());
}
}
}
@ -160,7 +168,8 @@ public class SubdivisionSurfaceModifier extends Modifier {
averageVert[edge.getFirstIndex()] = averageVert[edge.getFirstIndex()] == null ? centroid.clone() : averageVert[edge.getFirstIndex()].addLocal(centroid);
averageVert[edge.getSecondIndex()] = averageVert[edge.getSecondIndex()] == null ? centroid.clone() : averageVert[edge.getSecondIndex()].addLocal(centroid);
averageCount[edge.getSecondIndex()] += 2;
averageCount[edge.getFirstIndex()] += 1;
averageCount[edge.getSecondIndex()] += 1;
}
}
@ -196,8 +205,8 @@ public class SubdivisionSurfaceModifier extends Modifier {
private void subdivideSimple(TemporalMesh temporalMesh) {
Map<Edge, Integer> edgePoints = new HashMap<Edge, Integer>();
Map<Face, Integer> facePoints = new HashMap<Face, Integer>();
List<Face> newFaces = new ArrayList<Face>();
List<Edge> newEdges = new ArrayList<Edge>(temporalMesh.getEdges().size() * 2);
Set<Face> newFaces = new LinkedHashSet<Face>();
Set<Edge> newEdges = new LinkedHashSet<Edge>(temporalMesh.getEdges().size() * 4);
int originalFacesCount = temporalMesh.getFaces().size();
@ -240,7 +249,7 @@ public class SubdivisionSurfaceModifier extends Modifier {
Vector3f v = temporalMesh.getVertices().get(vIndex);
if (vPrevEdgeVertIndex < 0) {
vPrevEdgeVertIndex = vertices.size() + originalFacesCount + edgeVertices.size();
verticesOnOriginalEdges.add(vNextEdgeVertIndex);
verticesOnOriginalEdges.add(vPrevEdgeVertIndex);
edgeVertices.add(vertices.get(vPrevIndex).add(v).divideLocal(2));
edgeNormals.add(normals.get(vPrevIndex).add(normals.get(vIndex)).normalizeLocal());
edgePoints.put(prevEdge, vPrevEdgeVertIndex);
@ -250,7 +259,7 @@ public class SubdivisionSurfaceModifier extends Modifier {
}
if (vNextEdgeVertIndex < 0) {
vNextEdgeVertIndex = vertices.size() + originalFacesCount + edgeVertices.size();
verticesOnOriginalEdges.add(vPrevEdgeVertIndex);
verticesOnOriginalEdges.add(vNextEdgeVertIndex);
edgeVertices.add(vertices.get(vNextIndex).add(v).divideLocal(2));
edgeNormals.add(normals.get(vNextIndex).add(normals.get(vIndex)).normalizeLocal());
edgePoints.put(nextEdge, vNextEdgeVertIndex);
@ -312,8 +321,9 @@ public class SubdivisionSurfaceModifier extends Modifier {
vertices.add(vertices.get(edge.getFirstIndex()).add(vertices.get(edge.getSecondIndex())).divideLocal(2));
normals.add(normals.get(edge.getFirstIndex()).add(normals.get(edge.getSecondIndex())).normalizeLocal());
newEdges.add(new Edge(edge.getFirstIndex(), newVertexIndex, 0, false, temporalMesh));
newEdges.add(new Edge(newVertexIndex, edge.getSecondIndex(), 0, false, temporalMesh));
newEdges.add(new Edge(edge.getFirstIndex(), newVertexIndex, edge.getCrease(), false, temporalMesh));
newEdges.add(new Edge(newVertexIndex, edge.getSecondIndex(), edge.getCrease(), false, temporalMesh));
verticesOnOriginalEdges.add(newVertexIndex);
}
}
@ -576,8 +586,10 @@ public class SubdivisionSurfaceModifier extends Modifier {
private static class CreasePoint {
private Vector3f target = new Vector3f();
private float weight;
private int index;
public CreasePoint(int index, boolean borderIndex, List<Edge> creaseEdges, TemporalMesh temporalMesh) {
this.index = index;
if (creaseEdges == null || creaseEdges.size() <= 1) {
target = null;// crease is used when vertex belongs to at least 2 creased edges
} else {
@ -596,7 +608,7 @@ public class SubdivisionSurfaceModifier extends Modifier {
if (borderIndex) {
target.set(temporalMesh.getVertices().get(index));
} else {
target.divideLocal(creasedEdgesCount);
target.addLocal(temporalMesh.getVertices().get(index)).divideLocal(creasedEdgesCount + 1);
}
} else {
target.set(temporalMesh.getVertices().get(index));
@ -614,5 +626,10 @@ public class SubdivisionSurfaceModifier extends Modifier {
public float getWeight() {
return weight;
}
@Override
public String toString() {
return "CreasePoint [index = " + index + ", target=" + target + ", weight=" + weight + "]";
}
}
}

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