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Support for BMesh loading. Enjoy :)

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9519 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
3.0
Kae..pl 13 years ago
parent 691ebcb53d
commit a85db87169
2 changed files with 147 additions and 51 deletions
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  1. 7
      engine/src/blender/com/jme3/scene/plugins/blender/meshes/MeshBuilder.java
  2. 191
      engine/src/blender/com/jme3/scene/plugins/blender/meshes/MeshHelper.java

7
engine/src/blender/com/jme3/scene/plugins/blender/meshes/MeshBuilder.java
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@ -259,6 +259,13 @@ import com.jme3.util.BufferUtils;
return uvCoordinates.size() > 0;
}
/**
* @return <b>true</b> if the mesh has no vertices and <b>false</b> otherwise
*/
public boolean isEmpty() {
return vertexMap.size() == 0;
}
/**
* This method adds a normal to a normals' map. This map is used to merge normals of a vertor that should be rendered smooth.
*

191
engine/src/blender/com/jme3/scene/plugins/blender/meshes/MeshHelper.java
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@ -112,59 +112,18 @@ public class MeshHelper extends AbstractBlenderHelper {
MeshBuilder meshBuilder = new MeshBuilder(vertices, verticesColors, this.areGeneratedTexturesPresent(materials));
Pointer pMFace = (Pointer) structure.getFieldValue("mface");
List<Structure> mFaces = null;
if (pMFace.isNotNull()) {
mFaces = pMFace.fetchData(blenderContext.getInputStream());
if (mFaces == null || mFaces.size() == 0) {
return new ArrayList<Geometry>(0);
}
} else{
mFaces = new ArrayList<Structure>(0);
}
Pointer pMTFace = (Pointer) structure.getFieldValue("mtface");
List<Structure> mtFaces = null;
if (pMTFace.isNotNull()) {
mtFaces = pMTFace.fetchData(blenderContext.getInputStream());
int facesAmount = ((Number) structure.getFieldValue("totface")).intValue();
if (mtFaces.size() != facesAmount) {
throw new BlenderFileException("The amount of faces uv coordinates is not equal to faces amount!");
}
if(pMFace.isNotNull()) {
this.readTraditionalFaces(meshBuilder, structure, blenderContext);
} else {
this.readBMesh(meshBuilder, structure, blenderContext);
}
// indicates if the material with the specified number should have a texture attached
Vector2f[] uvCoordinatesForFace = new Vector2f[3];
for (int i = 0; i < mFaces.size(); ++i) {
Structure mFace = mFaces.get(i);
int materialNumber = ((Number) mFace.getFieldValue("mat_nr")).intValue();
boolean smooth = (((Number) mFace.getFieldValue("flag")).byteValue() & 0x01) != 0x00;
DynamicArray<Number> uvs = null;
if (mtFaces != null) {
Structure mtFace = mtFaces.get(i);
// uvs always must be added wheater we have texture or not
uvs = (DynamicArray<Number>) mtFace.getFieldValue("uv");
uvCoordinatesForFace[0] = new Vector2f(uvs.get(0, 0).floatValue(), uvs.get(0, 1).floatValue());
uvCoordinatesForFace[1] = new Vector2f(uvs.get(1, 0).floatValue(), uvs.get(1, 1).floatValue());
uvCoordinatesForFace[2] = new Vector2f(uvs.get(2, 0).floatValue(), uvs.get(2, 1).floatValue());
}
int v1 = ((Number) mFace.getFieldValue("v1")).intValue();
int v2 = ((Number) mFace.getFieldValue("v2")).intValue();
int v3 = ((Number) mFace.getFieldValue("v3")).intValue();
int v4 = ((Number) mFace.getFieldValue("v4")).intValue();
meshBuilder.appendFace(v1, v2, v3, smooth, materialNumber, uvs == null ? null : uvCoordinatesForFace, false, i);
if (v4 > 0) {
if (uvs != null) {
uvCoordinatesForFace[0] = new Vector2f(uvs.get(0, 0).floatValue(), uvs.get(0, 1).floatValue());
uvCoordinatesForFace[1] = new Vector2f(uvs.get(2, 0).floatValue(), uvs.get(2, 1).floatValue());
uvCoordinatesForFace[2] = new Vector2f(uvs.get(3, 0).floatValue(), uvs.get(3, 1).floatValue());
}
meshBuilder.appendFace(v1, v3, v4, smooth, materialNumber, uvs == null ? null : uvCoordinatesForFace, true, i);
}
if(meshBuilder.isEmpty()) {
geometries = new ArrayList<Geometry>(0);
blenderContext.addLoadedFeatures(structure.getOldMemoryAddress(), structure.getName(), structure, geometries);
blenderContext.setMeshContext(structure.getOldMemoryAddress(), meshContext);
return geometries;
}
meshContext.setVertexReferenceMap(meshBuilder.getVertexReferenceMap());
// reading vertices groups (from the parent)
@ -275,6 +234,136 @@ public class MeshHelper extends AbstractBlenderHelper {
return geometries;
}
/**
* This method reads the mesh from the new BMesh system.
*
* @param meshBuilder
* the mesh builder
* @param meshStructure
* the mesh structure
* @param blenderContext
* the blender context
* @throws BlenderFileException
* an exception is thrown when there are problems with the
* blender file
*/
@SuppressWarnings("unchecked")
private void readBMesh(MeshBuilder meshBuilder, Structure meshStructure, BlenderContext blenderContext) throws BlenderFileException {
Pointer pMLoop = (Pointer) meshStructure.getFieldValue("mloop");
Pointer pMPoly = (Pointer) meshStructure.getFieldValue("mpoly");
Pointer pMEdge = (Pointer) meshStructure.getFieldValue("medge");
Pointer pMLoopUV = (Pointer) meshStructure.getFieldValue("mloopuv");
Vector2f[] uvCoordinatesForFace = new Vector2f[3];
if (pMPoly.isNotNull() && pMLoop.isNotNull() && pMEdge.isNotNull()) {
int faceIndex = 0;
List<Structure> polys = pMPoly.fetchData(blenderContext.getInputStream());
List<Structure> loops = pMLoop.fetchData(blenderContext.getInputStream());
List<Structure> loopuvs = pMLoopUV.isNotNull() ? pMLoopUV.fetchData(blenderContext.getInputStream()) : null;
for (Structure poly : polys) {
int materialNumber = ((Number) poly.getFieldValue("mat_nr")).intValue();
int loopStart = ((Number) poly.getFieldValue("loopstart")).intValue();
int totLoop = ((Number) poly.getFieldValue("totloop")).intValue();
boolean smooth = (((Number) poly.getFieldValue("flag")).byteValue() & 0x01) != 0x00;
int[] vertexIndexes = new int[totLoop];
Vector2f[] uvs = loopuvs != null ? new Vector2f[totLoop] : null;
for (int i = loopStart; i < loopStart + totLoop; ++i) {
vertexIndexes[i - loopStart] = ((Number) loops.get(i).getFieldValue("v")).intValue();
if (uvs != null) {
DynamicArray<Number> loopUVS = (DynamicArray<Number>) loopuvs.get(i).getFieldValue("uv");
uvs[i - loopStart] = new Vector2f(loopUVS.get(0).floatValue(), loopUVS.get(1).floatValue());
}
}
int i = 0;
while (i < totLoop - 2) {
int v1 = vertexIndexes[0];
int v2 = vertexIndexes[i + 1];
int v3 = vertexIndexes[i + 2];
if (uvs != null) {// uvs always must be added wheater we
// have texture or not
uvCoordinatesForFace[0] = uvs[0];
uvCoordinatesForFace[1] = uvs[i + 1];
uvCoordinatesForFace[2] = uvs[i + 2];
}
meshBuilder.appendFace(v1, v2, v3, smooth, materialNumber, uvs == null ? null : uvCoordinatesForFace, false, faceIndex);
++i;
}
++faceIndex;
}
}
}
/**
* This method reads the mesh from traditional triangle/quad storing
* structures.
*
* @param meshBuilder
* the mesh builder
* @param meshStructure
* the mesh structure
* @param blenderContext
* the blender context
* @throws BlenderFileException
* an exception is thrown when there are problems with the
* blender file
*/
@SuppressWarnings("unchecked")
private void readTraditionalFaces(MeshBuilder meshBuilder, Structure meshStructure, BlenderContext blenderContext) throws BlenderFileException {
Pointer pMFace = (Pointer) meshStructure.getFieldValue("mface");
List<Structure> mFaces = pMFace.fetchData(blenderContext.getInputStream());
if (mFaces != null && mFaces.size() > 0) {
Pointer pMTFace = (Pointer) meshStructure.getFieldValue("mtface");
List<Structure> mtFaces = null;
if (pMTFace.isNotNull()) {
mtFaces = pMTFace.fetchData(blenderContext.getInputStream());
int facesAmount = ((Number) meshStructure.getFieldValue("totface")).intValue();
if (mtFaces.size() != facesAmount) {
throw new BlenderFileException("The amount of faces uv coordinates is not equal to faces amount!");
}
}
// indicates if the material with the specified number should have a
// texture attached
Vector2f[] uvCoordinatesForFace = new Vector2f[3];
for (int i = 0; i < mFaces.size(); ++i) {
Structure mFace = mFaces.get(i);
int materialNumber = ((Number) mFace.getFieldValue("mat_nr")).intValue();
boolean smooth = (((Number) mFace.getFieldValue("flag")).byteValue() & 0x01) != 0x00;
DynamicArray<Number> uvs = null;
if (mtFaces != null) {
Structure mtFace = mtFaces.get(i);
// uvs always must be added wheater we have texture or not
uvs = (DynamicArray<Number>) mtFace.getFieldValue("uv");
uvCoordinatesForFace[0] = new Vector2f(uvs.get(0, 0).floatValue(), uvs.get(0, 1).floatValue());
uvCoordinatesForFace[1] = new Vector2f(uvs.get(1, 0).floatValue(), uvs.get(1, 1).floatValue());
uvCoordinatesForFace[2] = new Vector2f(uvs.get(2, 0).floatValue(), uvs.get(2, 1).floatValue());
}
int v1 = ((Number) mFace.getFieldValue("v1")).intValue();
int v2 = ((Number) mFace.getFieldValue("v2")).intValue();
int v3 = ((Number) mFace.getFieldValue("v3")).intValue();
int v4 = ((Number) mFace.getFieldValue("v4")).intValue();
meshBuilder.appendFace(v1, v2, v3, smooth, materialNumber, uvs == null ? null : uvCoordinatesForFace, false, i);
if (v4 > 0) {
if (uvs != null) {
uvCoordinatesForFace[0] = new Vector2f(uvs.get(0, 0).floatValue(), uvs.get(0, 1).floatValue());
uvCoordinatesForFace[1] = new Vector2f(uvs.get(2, 0).floatValue(), uvs.get(2, 1).floatValue());
uvCoordinatesForFace[2] = new Vector2f(uvs.get(3, 0).floatValue(), uvs.get(3, 1).floatValue());
}
meshBuilder.appendFace(v1, v3, v4, smooth, materialNumber, uvs == null ? null : uvCoordinatesForFace, true, i);
}
}
}
}
/**
* @return <b>true</b> if the material has at least one generated component and <b>false</b> otherwise

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