/**
* Load model.
*
* @param pa the pa
* @param pathToModel the path to model
* @param creaseAngle the crease angle
* @param flipTextureY flip texture y
* @param flipTextureX flip texture x
* @return the MT triangle meshes[]
* @throws FileNotFoundException the file not found exception
*/
public MTTriangleMesh[] loadModelImpl(
PApplet pa, String pathToModel, float creaseAngle, boolean flipTextureY, boolean flipTextureX)
throws FileNotFoundException {
long timeA = System.currentTimeMillis();
this.pa = pa;
ArrayList<MTTriangleMesh> returnMeshList = new ArrayList<MTTriangleMesh>();
TriangleNormalGenerator normalGenerator = new TriangleNormalGenerator();
// normalGenerator.setDebug(debug);
HashMap<Integer, Group> materialIdToGroup = new HashMap<Integer, Group>();
// TODO implement
if (textureCache != null) textureCache.clear();
textureCache = new WeakHashMap<String, PImage>();
Scene3ds scene = null;
try {
TextDecode3ds decode = new TextDecode3ds();
// int level = Scene3ds.DECODE_USED_PARAMS_AND_CHUNKS; //Scene3ds.DECODE_ALL;
// DECODE_USED_PARAMS, DECODE_USED_PARAMS_AND_CHUNKS
int level = Scene3ds.DECODE_ALL;
// LOAD all meshes from file into scene object
File file = new File(pathToModel);
if (file.exists()) {
scene = new Scene3ds(file, decode, level);
} else {
InputStream in =
Thread.currentThread().getContextClassLoader().getResourceAsStream(pathToModel);
if (in == null) {
in = pa.getClass().getResourceAsStream(pathToModel);
}
if (in != null) {
scene = new Scene3ds(in, decode, level);
} else {
throw new FileNotFoundException("File not found: " + file.getAbsolutePath());
}
}
if (debug) logger.debug("\n-> Loading model: " + file.getName() + " <-");
if (debug) {
// Go through all MATERIALS
logger.debug("\nNum Scene Materials: " + scene.materials());
for (int m = 0; m < scene.materials(); m++) {
Material3ds mat = scene.material(m);
logger.debug(" Material " + m + ": \" " + mat.name() + "\"");
}
logger.debug("");
}
///////// Go through all MESHES //////////////////////////
for (int i = 0; i < scene.meshes(); i++) {
Mesh3ds m = scene.mesh(i);
if (debug) {
int texMapType = m.texMapType();
logger.debug("Texture coordinates provided: " + m.texCoords());
logger.debug("Texture mapping type: " + texMapType);
logger.debug("Mesh:" + m.name() + " Pivot:" + m.pivot());
}
/*
XYZTrack3ds pos = m.positionTrack();
RotationTrack3ds rot = m.rotationTrack();
XYZTrack3ds sc = m.scaleTrack();
//FIXME .track and key(i) werden nicht zur verfügung gestellt?!? aber in javadoc
*/
if (debug) {
logger.debug(
"->Processing mesh: " + i + " of " + scene.meshes() + " Name: \"" + m.name() + "\"");
logger.debug(" Num Faces: " + m.faces());
logger.debug(" Num Vertices: " + m.vertices());
logger.debug(" Num TextureCoordinates: " + m.texCoords());
logger.debug("");
}
// Create the arrays needed for the cruncher
Vertex[] vertices = new Vertex[m.vertices()];
int[] indices = new int[m.faces() * 3];
int[] texCoordIndices = new int[m.faces() * 3];
float[][] textureCoords = new float[m.texCoords()][2];
// Fill Vertices array
for (int j = 0; j < m.vertices(); j++) {
Vertex3ds vert = m.vertex(j);
if (this.flipY) {
vertices[j] = new Vertex(vert.X, -vert.Y, vert.Z, -1, -1);
} else {
vertices[j] = new Vertex(vert.X, vert.Y, vert.Z, -1, -1);
}
if (m.texCoords() > j) textureCoords[j] = new float[] {m.texCoord(j).U, m.texCoord(j).V};
}
// Fill texcoords array
for (int j = 0; j < m.texCoords(); j++) {
TexCoord3ds tex = m.texCoord(j);
float[] texCoord = new float[2];
texCoord[0] = tex.U;
texCoord[1] = tex.V;
textureCoords[j] = texCoord;
}
// TODO so werden gleiche materials in verschiedenen meshes nicht zu einem mesh gemacht!
// also müsste also ohne clear machen und dafür vertices + texcoords in einen grossen
// array, dafür müssten indices aber per offset angepasst werden dass die wieder stimmen!
materialIdToGroup.clear();
if (m.faceMats() > 0) {
// List face Materials //TODO USE LOGGERS!!
logger.debug(" Num Face-Materials: " + m.faceMats());
for (int n = 0; n < m.faceMats(); n++) {
FaceMat3ds fmat = m.faceMat(n);
logger.debug(" FaceMat ID: " + fmat.matIndex());
logger.debug(" FaceMat indices: " + fmat.faceIndexes());
int[] faceIndicesForMaterial = fmat.faceIndex();
if (faceIndicesForMaterial.length <= 0) {
continue;
}
// Check if there already is a group with the same material
Group group = materialIdToGroup.get(fmat.matIndex());
// If not, create a new group and save it in map
if (group == null) {
group = new Group(new Integer(fmat.matIndex()).toString());
materialIdToGroup.put(fmat.matIndex(), group);
}
// Go through all pointers to the faces for this material
// and get the corresponding face
for (int j = 0; j < faceIndicesForMaterial.length; j++) {
int k = faceIndicesForMaterial[j];
Face3ds face = m.face(k);
AFace aFace = new AFace();
aFace.p0 = face.P0;
aFace.p1 = face.P1;
aFace.p2 = face.P2;
aFace.t0 = face.P0;
aFace.t1 = face.P1;
aFace.t2 = face.P2;
group.addFace(aFace);
}
}
Iterator<Integer> it = materialIdToGroup.keySet().iterator();
logger.debug("Mesh: " + m.name() + " Anzahl Groups:" + materialIdToGroup.keySet().size());
while (it.hasNext()) {
int currentGroupName = it.next();
Group currentGroup = materialIdToGroup.get(currentGroupName);
logger.debug("Current group: " + currentGroupName);
currentGroup.compileItsOwnLists(vertices, textureCoords);
// Get the new arrays
Vertex[] newVertices = currentGroup.getGroupVertices();
int[] newIndices = currentGroup.getIndexArray();
float[][] newTextureCoords = currentGroup.getGroupTexCoords();
int[] newTexIndices = currentGroup.getTexCoordIndices();
logger.debug(
"\nGroup: \""
+ currentGroup.name
+ "\" ->Vertices: "
+ currentGroup.verticesForGroup.size()
+ " ->TextureCoords: "
+ currentGroup.texCoordsForGroup.size()
+ " ->Indices: "
+ currentGroup.indexArray.length
+ " ->Texcoord Indices: "
+ currentGroup.texCoordIndexArray.length);
logger.debug("");
if (vertices.length > 2) {
GeometryInfo geometry = null;
// Load as all vertex normals smoothed if creaseAngle == 180;
if (creaseAngle == 180) {
geometry =
normalGenerator.generateSmoothNormals(
pa,
newVertices,
newIndices,
newTextureCoords,
newTexIndices,
creaseAngle,
flipTextureY,
flipTextureX);
} else {
geometry =
normalGenerator.generateCreaseAngleNormals(
pa,
newVertices,
newIndices,
newTextureCoords,
newTexIndices,
creaseAngle,
flipTextureY,
flipTextureX);
}
MTTriangleMesh mesh = new MTTriangleMesh(pa, geometry);
if (mesh != null) {
mesh.setName(m.name() + " material: " + new Integer(currentGroupName).toString());
// Assign texture
this.assignMaterial(pathToModel, file, scene, m, currentGroupName, mesh);
if (mesh.getTexture() != null) {
mesh.setTextureEnabled(true);
} else {
logger.debug("No texture could be assigned to mesh.");
}
returnMeshList.add(mesh);
}
}
}
} else {
// If there are no materials for this mesh dont split mesh into
// groups by material
// Fill indices array and texcoords array (Here: vertex index = texcoord index)
for (int faceIndex = 0; faceIndex < m.faces(); faceIndex++) {
Face3ds f = m.face(faceIndex);
indices[faceIndex * 3] = f.P0;
indices[faceIndex * 3 + 1] = f.P1;
indices[faceIndex * 3 + 2] = f.P2;
texCoordIndices[faceIndex * 3] = f.P0;
texCoordIndices[faceIndex * 3 + 1] = f.P1;
texCoordIndices[faceIndex * 3 + 2] = f.P2;
} // for faces
// Create the Mesh and set a texture
if (vertices.length > 2) {
// Create normals for the mesh and duplicate vertices for faces that share the same
// Vertex, but with different texture coordinates or different normals
GeometryInfo geometry = null;
// Generate normals and denormalize vertices with more than 1 texture coordinate
if (creaseAngle == 180) {
geometry =
normalGenerator.generateSmoothNormals(
pa,
vertices,
indices,
textureCoords,
texCoordIndices,
creaseAngle,
flipTextureY,
flipTextureX);
} else {
geometry =
normalGenerator.generateCreaseAngleNormals(
pa,
vertices,
indices,
textureCoords,
texCoordIndices,
creaseAngle,
flipTextureY,
flipTextureX);
}
MTTriangleMesh mesh = new MTTriangleMesh(pa, geometry);
mesh.setName(m.name());
// this.assignMaterial(file, scene, m, sceneMaterialID, mesh);
returnMeshList.add(mesh);
} // end if vertices.lentgh > 2
}
} // for meshes
// logger.debug(decode.text());
} catch (Exception e) {
e.printStackTrace();
}
materialIdToGroup.clear();
long timeB = System.currentTimeMillis();
long delta = timeB - timeA;
logger.debug("Loaded model in: " + delta + " ms");
return (MTTriangleMesh[]) returnMeshList.toArray(new MTTriangleMesh[returnMeshList.size()]);
}
/**
* Uses the faces attached to this group during the parsing process and the lists with all
* vertex and all texture coordinates of the obj file to create arrays for this group with
* vertices and texture coords that only belong to this single group.
*
* @param allFileVerts
* @param allTexCoords
*/
public void compileItsOwnLists(Vertex[] allFileVerts, float[][] allTexCoords) {
indexArray = new int[faces.size() * 3];
if (allTexCoords.length > 0) {
texCoordIndexArray = new int[faces.size() * 3];
}
for (int i = 0; i < faces.size(); i++) {
AFace currentFace = faces.get(i);
Vertex v0 = allFileVerts[currentFace.p0];
Vertex v1 = allFileVerts[currentFace.p1];
Vertex v2 = allFileVerts[currentFace.p2];
if (allTexCoords.length > currentFace.t0
&& allTexCoords.length > currentFace.t1
&& allTexCoords.length > currentFace.t2) {
float[] texV0 = allTexCoords[currentFace.t0];
float[] texV1 = allTexCoords[currentFace.t1];
float[] texV2 = allTexCoords[currentFace.t2];
// Etwas redundant immer wieder zu machen beim gleichen vertex..whatever
v0.setTexCoordU(texV0[0]);
v0.setTexCoordV(texV0[1]);
v1.setTexCoordU(texV1[0]);
v1.setTexCoordV(texV1[1]);
v2.setTexCoordU(texV2[0]);
v2.setTexCoordV(texV2[1]);
// Check if there is a texture index in the hashtable at the faces texture pointer
// if not, create a new index = the end of thexcoords list, and put the pointer into the
// hash
// if yes, point the faces texture pointer to the pointer in the hash
// This process maps the texture coords and indices of all the groups in the obj
// file to only this groups texture coord list and texture indices, the indices
// are created from the index in the thex coord list when they are put in
// Only the texture coordinates are added to the list that have not been adressed
// in the texture indices pointers in the faces
// Same texture pointers will point to the same texcoord in the list
Integer oldToNewT0 = oldTexIndexToNewTexIndex.get(currentFace.t0);
if (oldToNewT0 != null) {
currentFace.t0 = oldToNewT0;
} else {
int newIndex = texCoordsForGroup.size();
texCoordsForGroup.add(texV0);
oldTexIndexToNewTexIndex.put(currentFace.t0, newIndex);
currentFace.t0 = newIndex;
}
Integer oldToNewT1 = oldTexIndexToNewTexIndex.get(currentFace.t1);
if (oldToNewT1 != null) {
currentFace.t1 = oldToNewT1;
} else {
int newIndex = texCoordsForGroup.size();
texCoordsForGroup.add(texV1);
oldTexIndexToNewTexIndex.put(currentFace.t1, newIndex);
currentFace.t1 = newIndex;
}
Integer oldToNewT2 = oldTexIndexToNewTexIndex.get(currentFace.t2);
if (oldToNewT2 != null) {
currentFace.t2 = oldToNewT2;
} else {
int newIndex = texCoordsForGroup.size();
texCoordsForGroup.add(texV2);
oldTexIndexToNewTexIndex.put(currentFace.t2, newIndex);
currentFace.t2 = newIndex;
}
}
// Do the same for the vertices.
// Create a new vertex pointer when adding the vertex to the list
Integer oldToNewP0 = oldIndexToNewIndex.get(currentFace.p0);
if (oldToNewP0 != null) {
// index of the old vertex list has already been mapped to a new one here -> use the new
// index in the face
currentFace.p0 = oldToNewP0;
} else {
int newIndex = verticesForGroup.size();
verticesForGroup.add(v0);
// mark that the former index (for exmample 323) is now at new index (f.e. 1)
oldIndexToNewIndex.put(currentFace.p0, newIndex);
currentFace.p0 = newIndex;
}
Integer oldToNewP1 = oldIndexToNewIndex.get(currentFace.p1);
if (oldToNewP1 != null) {
currentFace.p1 = oldToNewP1;
} else {
int newIndex = verticesForGroup.size();
verticesForGroup.add(v1);
oldIndexToNewIndex.put(currentFace.p1, newIndex);
currentFace.p1 = newIndex;
}
Integer oldToNewP2 = oldIndexToNewIndex.get(currentFace.p2);
if (oldToNewP2 != null) {
currentFace.p2 = oldToNewP2;
} else {
int newIndex = verticesForGroup.size();
verticesForGroup.add(v2);
oldIndexToNewIndex.put(currentFace.p2, newIndex);
currentFace.p2 = newIndex;
}
indexArray[i * 3] = currentFace.p0;
indexArray[i * 3 + 1] = currentFace.p1;
indexArray[i * 3 + 2] = currentFace.p2;
if (allTexCoords.length > 0) {
texCoordIndexArray[i * 3] = currentFace.t0;
texCoordIndexArray[i * 3 + 1] = currentFace.t1;
texCoordIndexArray[i * 3 + 2] = currentFace.t2;
}
}
}
