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open_toontown_panda3d/pandatool/src/xfileegg/xFileMesh.cxx

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// Filename: xFileMesh.cxx
// Created by: drose (19Jun01)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license. You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////
#include "xFileMesh.h"
#include "xFileFace.h"
#include "xFileVertex.h"
#include "xFileNormal.h"
#include "xFileMaterial.h"
#include "config_xfile.h"
#include "eggVertexPool.h"
#include "eggVertex.h"
#include "eggPolygon.h"
#include "eggGroupNode.h"
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
XFileMesh::
XFileMesh(CoordinateSystem cs) : _cs(cs) {
_has_normals = false;
_has_colors = false;
_has_uvs = false;
_has_materials = false;
_egg_parent = NULL;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::Destructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
XFileMesh::
~XFileMesh() {
clear();
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::clear
// Access: Public
// Description: Empties all data from the mesh.
////////////////////////////////////////////////////////////////////
void XFileMesh::
clear() {
Vertices::iterator vi;
for (vi = _vertices.begin(); vi != _vertices.end(); ++vi) {
XFileVertex *vertex = (*vi);
delete vertex;
}
Normals::iterator ni;
for (ni = _normals.begin(); ni != _normals.end(); ++ni) {
XFileNormal *normal = (*ni);
delete normal;
}
Materials::iterator mi;
for (mi = _materials.begin(); mi != _materials.end(); ++mi) {
XFileMaterial *material = (*mi);
delete material;
}
Faces::iterator fi;
for (fi = _faces.begin(); fi != _faces.end(); ++fi) {
XFileFace *face = (*fi);
delete face;
}
_vertices.clear();
_normals.clear();
_materials.clear();
_faces.clear();
_unique_vertices.clear();
_unique_normals.clear();
_unique_materials.clear();
_has_normals = false;
_has_colors = false;
_has_uvs = false;
_has_materials = false;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_polygon
// Access: Public
// Description: Adds the indicated polygon to the mesh.
////////////////////////////////////////////////////////////////////
void XFileMesh::
add_polygon(EggPolygon *egg_poly) {
XFileFace *face = new XFileFace;
face->set_from_egg(this, egg_poly);
_faces.push_back(face);
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_vertex
// Access: Public
// Description: Creates a new XFileVertex, if one does not already
// exist for the indicated vertex, and returns its
// index.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_vertex(EggVertex *egg_vertex, EggPrimitive *egg_prim) {
int next_index = _vertices.size();
XFileVertex *vertex = new XFileVertex;
vertex->set_from_egg(egg_vertex, egg_prim);
if (vertex->_has_color) {
_has_colors = true;
}
if (vertex->_has_uv) {
_has_uvs = true;
}
pair<UniqueVertices::iterator, bool> result =
_unique_vertices.insert(UniqueVertices::value_type(vertex, next_index));
if (result.second) {
// Successfully added; this is a new vertex.
_vertices.push_back(vertex);
return next_index;
} else {
// Not successfully added; there is already a vertex with these
// properties. Return that one instead.
delete vertex;
return (*result.first).second;
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_normal
// Access: Public
// Description: Creates a new XFileNormal, if one does not already
// exist for the indicated normal, and returns its
// index.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_normal(EggVertex *egg_vertex, EggPrimitive *egg_prim) {
int next_index = _normals.size();
XFileNormal *normal = new XFileNormal;
normal->set_from_egg(egg_vertex, egg_prim);
if (normal->_has_normal) {
_has_normals = true;
}
pair<UniqueNormals::iterator, bool> result =
_unique_normals.insert(UniqueNormals::value_type(normal, next_index));
if (result.second) {
// Successfully added; this is a new normal.
_normals.push_back(normal);
return next_index;
} else {
// Not successfully added; there is already a normal with these
// properties. Return that one instead.
delete normal;
return (*result.first).second;
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_material
// Access: Public
// Description: Creates a new XFileMaterial, if one does not already
// exist for the indicated material, and returns its
// index.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_material(EggPrimitive *egg_prim) {
int next_index = _materials.size();
XFileMaterial *material = new XFileMaterial;
material->set_from_egg(egg_prim);
if (material->has_material()) {
_has_materials = true;
}
pair<UniqueMaterials::iterator, bool> result =
_unique_materials.insert(UniqueMaterials::value_type(material, next_index));
if (result.second) {
// Successfully added; this is a new material.
_materials.push_back(material);
return next_index;
} else {
// Not successfully added; there is already a material with these
// properties. Return that one instead.
delete material;
return (*result.first).second;
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_vertex
// Access: Public
// Description: Adds the newly-created XFileVertex unequivocally to
// the mesh, returning its index number. The XFileMesh
// object becomes the owner of the XFileVertex
// pointer, and will delete it when it destructs.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_vertex(XFileVertex *vertex) {
int next_index = _vertices.size();
_unique_vertices.insert(UniqueVertices::value_type(vertex, next_index));
_vertices.push_back(vertex);
return next_index;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_normal
// Access: Public
// Description: Adds the newly-created XFileNormal unequivocally to
// the mesh, returning its index number. The XFileMesh
// object becomes the owner of the XFileNormal
// pointer, and will delete it when it destructs.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_normal(XFileNormal *normal) {
int next_index = _normals.size();
_unique_normals.insert(UniqueNormals::value_type(normal, next_index));
_normals.push_back(normal);
return next_index;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::add_material
// Access: Public
// Description: Adds the newly-created XFileMaterial unequivocally to
// the mesh, returning its index number. The XFileMesh
// object becomes the owner of the XFileMaterial
// pointer, and will delete it when it destructs.
////////////////////////////////////////////////////////////////////
int XFileMesh::
add_material(XFileMaterial *material) {
int next_index = _materials.size();
_unique_materials.insert(UniqueMaterials::value_type(material, next_index));
_materials.push_back(material);
return next_index;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::set_egg_parent
// Access: Public
// Description: Specifies the egg node that will eventually be the
// parent of this mesh, when create_polygons() is later
// called.
////////////////////////////////////////////////////////////////////
void XFileMesh::
set_egg_parent(EggGroupNode *egg_parent) {
// We actually put the mesh under its own group.
EggGroup *egg_group = new EggGroup(get_name());
egg_parent->add_child(egg_group);
_egg_parent = egg_group;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::create_polygons
// Access: Public
// Description: Creates a slew of EggPolygons according to the faces
// in the mesh, and adds them to the
// previously-indicated parent node.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
create_polygons(XFileToEggConverter *converter) {
nassertr(_egg_parent != (EggGroupNode *)NULL, false);
EggVertexPool *vpool = new EggVertexPool(get_name());
_egg_parent->add_child(vpool);
Faces::const_iterator fi;
for (fi = _faces.begin(); fi != _faces.end(); ++fi) {
XFileFace *face = (*fi);
EggPolygon *egg_poly = new EggPolygon;
_egg_parent->add_child(egg_poly);
// Set up the vertices for the polygon.
XFileFace::Vertices::reverse_iterator vi;
for (vi = face->_vertices.rbegin(); vi != face->_vertices.rend(); ++vi) {
int vertex_index = (*vi)._vertex_index;
int normal_index = (*vi)._normal_index;
if (vertex_index < 0 || vertex_index >= (int)_vertices.size()) {
xfile_cat.error()
<< "Vertex index out of range in Mesh.\n";
return false;
}
XFileVertex *vertex = _vertices[vertex_index];
XFileNormal *normal = (XFileNormal *)NULL;
if (normal_index >= 0 && normal_index < (int)_normals.size()) {
normal = _normals[normal_index];
}
// Create a temporary EggVertex before adding it to the pool.
EggVertex temp_vtx;
temp_vtx.set_external_index(vertex_index);
temp_vtx.set_pos(LCAST(double, vertex->_point));
if (vertex->_has_color) {
temp_vtx.set_color(vertex->_color);
}
if (vertex->_has_uv) {
TexCoordd uv = LCAST(double, vertex->_uv);
// Windows draws the UV's upside-down.
uv[1] = 1.0 - uv[1];
temp_vtx.set_uv(uv);
}
if (normal != (XFileNormal *)NULL && normal->_has_normal) {
temp_vtx.set_normal(LCAST(double, normal->_normal));
}
// Transform the vertex into the appropriate (global) coordinate
// space.
temp_vtx.transform(_egg_parent->get_node_to_vertex());
// Now get a real EggVertex matching our template.
EggVertex *egg_vtx = vpool->create_unique_vertex(temp_vtx);
egg_poly->add_vertex(egg_vtx);
}
// And apply the material for the polygon.
int material_index = face->_material_index;
if (material_index >= 0 && material_index < (int)_materials.size()) {
XFileMaterial *material = _materials[material_index];
material->apply_to_egg(egg_poly, converter);
}
}
// Now go through all of the vertices and skin them up.
EggVertexPool::iterator vi;
for (vi = vpool->begin(); vi != vpool->end(); ++vi) {
EggVertex *egg_vtx = (*vi);
int vertex_index = egg_vtx->get_external_index();
SkinWeights::const_iterator swi;
for (swi = _skin_weights.begin(); swi != _skin_weights.end(); ++swi) {
const SkinWeightsData &data = (*swi);
WeightMap::const_iterator wmi = data._weight_map.find(vertex_index);
if (wmi != data._weight_map.end()) {
EggGroup *joint = converter->find_joint(data._joint_name,
data._matrix_offset);
if (joint != (EggGroup *)NULL) {
double weight = (*wmi).second;
joint->ref_vertex(egg_vtx, weight);
}
}
}
}
if (!has_normals()) {
// If we don't have explicit normals, make some up, per the DX
// spec. Since the DX spec doesn't mention anything about a
// crease angle, we should be as generous as possible.
_egg_parent->recompute_vertex_normals(180.0, _cs);
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::has_normals
// Access: Public
// Description: Returns true if any of the vertices or faces added to
// this mesh used a normal, false otherwise.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
has_normals() const {
return _has_normals;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::has_colors
// Access: Public
// Description: Returns true if any of the vertices or faces added to
// this mesh used a color, false otherwise.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
has_colors() const {
return _has_colors;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::has_uvs
// Access: Public
// Description: Returns true if any of the vertices added to this
// mesh used a texture coordinate, false otherwise.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
has_uvs() const {
return _has_uvs;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::has_materials
// Access: Public
// Description: Returns true if any of the faces added to this mesh
// used a real material, false otherwise.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
has_materials() const {
return _has_materials;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::get_num_materials
// Access: Public
// Description: Returns the number of distinct materials associated
// with the mesh.
////////////////////////////////////////////////////////////////////
int XFileMesh::
get_num_materials() const {
return _materials.size();
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::get_material
// Access: Public
// Description: Returns a pointer to the nth materials associated
// with the mesh.
////////////////////////////////////////////////////////////////////
XFileMaterial *XFileMesh::
get_material(int n) const {
nassertr(n >= 0 && n < (int)_materials.size(), (XFileMaterial *)NULL);
return _materials[n];
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::make_mesh_data
// Access: Public
// Description: Fills the datagram with the raw data for the DX
// Mesh template.
////////////////////////////////////////////////////////////////////
void XFileMesh::
make_mesh_data(Datagram &raw_data) {
raw_data.clear();
raw_data.add_int32(_vertices.size());
Vertices::const_iterator vi;
for (vi = _vertices.begin(); vi != _vertices.end(); ++vi) {
XFileVertex *vertex = (*vi);
const Vertexf &point = vertex->_point;
raw_data.add_float32(point[0]);
raw_data.add_float32(point[1]);
raw_data.add_float32(point[2]);
}
raw_data.add_int32(_faces.size());
Faces::const_iterator fi;
for (fi = _faces.begin(); fi != _faces.end(); ++fi) {
XFileFace *face = (*fi);
raw_data.add_int32(face->_vertices.size());
XFileFace::Vertices::const_iterator fvi;
for (fvi = face->_vertices.begin();
fvi != face->_vertices.end();
++fvi) {
raw_data.add_int32((*fvi)._vertex_index);
}
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::make_normal_data
// Access: Public
// Description: Fills the datagram with the raw data for the DX
// MeshNormals template.
////////////////////////////////////////////////////////////////////
void XFileMesh::
make_normal_data(Datagram &raw_data) {
raw_data.clear();
raw_data.add_int32(_normals.size());
Normals::const_iterator ni;
for (ni = _normals.begin(); ni != _normals.end(); ++ni) {
XFileNormal *normal = (*ni);
const Normalf &norm = normal->_normal;
raw_data.add_float32(norm[0]);
raw_data.add_float32(norm[1]);
raw_data.add_float32(norm[2]);
}
raw_data.add_int32(_faces.size());
Faces::const_iterator fi;
for (fi = _faces.begin(); fi != _faces.end(); ++fi) {
XFileFace *face = (*fi);
raw_data.add_int32(face->_vertices.size());
XFileFace::Vertices::const_iterator fvi;
for (fvi = face->_vertices.begin();
fvi != face->_vertices.end();
++fvi) {
raw_data.add_int32((*fvi)._normal_index);
}
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::make_color_data
// Access: Public
// Description: Fills the datagram with the raw data for the DX
// MeshVertexColors template.
////////////////////////////////////////////////////////////////////
void XFileMesh::
make_color_data(Datagram &raw_data) {
raw_data.clear();
raw_data.add_int32(_vertices.size());
Vertices::const_iterator vi;
int i = 0;
for (vi = _vertices.begin(); vi != _vertices.end(); ++vi) {
XFileVertex *vertex = (*vi);
const Colorf &color = vertex->_color;
raw_data.add_int32(i);
raw_data.add_float32(color[0]);
raw_data.add_float32(color[1]);
raw_data.add_float32(color[2]);
raw_data.add_float32(color[3]);
i++;
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::make_uv_data
// Access: Public
// Description: Fills the datagram with the raw data for the DX
// MeshTextureCoords template.
////////////////////////////////////////////////////////////////////
void XFileMesh::
make_uv_data(Datagram &raw_data) {
raw_data.clear();
raw_data.add_int32(_vertices.size());
Vertices::const_iterator vi;
for (vi = _vertices.begin(); vi != _vertices.end(); ++vi) {
XFileVertex *vertex = (*vi);
const TexCoordf &uv = vertex->_uv;
raw_data.add_float32(uv[0]);
raw_data.add_float32(uv[1]);
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::make_material_list_data
// Access: Public
// Description: Fills the datagram with the raw data for the DX
// MeshMaterialList template.
////////////////////////////////////////////////////////////////////
void XFileMesh::
make_material_list_data(Datagram &raw_data) {
raw_data.clear();
raw_data.add_int32(_materials.size());
raw_data.add_int32(_faces.size());
Faces::const_iterator fi;
for (fi = _faces.begin(); fi != _faces.end(); ++fi) {
XFileFace *face = (*fi);
raw_data.add_int32(face->_material_index);
}
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_mesh_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// Mesh template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_mesh_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
clear();
int i, j;
int num_vertices = di.get_int32();
for (i = 0; i < num_vertices; i++) {
XFileVertex *vertex = new XFileVertex;
vertex->_point[0] = di.get_float32();
vertex->_point[1] = di.get_float32();
vertex->_point[2] = di.get_float32();
add_vertex(vertex);
}
int num_faces = di.get_int32();
for (i = 0; i < num_faces; i++) {
XFileFace *face = new XFileFace;
num_vertices = di.get_int32();
for (j = 0; j < num_vertices; j++) {
XFileFace::Vertex vertex;
vertex._vertex_index = di.get_int32();
vertex._normal_index = -1;
face->_vertices.push_back(vertex);
}
_faces.push_back(face);
}
if (di.get_remaining_size() != 0) {
xfile_cat.warning()
<< "Ignoring " << di.get_remaining_size() << " trailing Mesh.\n";
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_normal_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// MeshNormals template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_normal_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
int num_normals = di.get_int32();
int i;
for (i = 0; i < num_normals; i++) {
XFileNormal *normal = new XFileNormal;
normal->_normal[0] = di.get_float32();
normal->_normal[1] = di.get_float32();
normal->_normal[2] = di.get_float32();
normal->_has_normal = true;
add_normal(normal);
}
int num_faces = di.get_int32();
if (num_faces != _faces.size()) {
xfile_cat.error()
<< "Incorrect number of faces in MeshNormals.\n";
return false;
}
for (i = 0; i < num_faces; i++) {
XFileFace *face = _faces[i];
int num_vertices = di.get_int32();
if (num_vertices != face->_vertices.size()) {
xfile_cat.error()
<< "Incorrect number of vertices for face in MeshNormals.\n";
return false;
}
for (int j = 0; j < num_vertices; j++) {
face->_vertices[j]._normal_index = di.get_int32();
}
}
if (di.get_remaining_size() != 0) {
xfile_cat.warning()
<< "Ignoring " << di.get_remaining_size()
<< " trailing MeshNormals.\n";
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_color_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// MeshVertexColors template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_color_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
int num_colors = di.get_int32();
int i;
for (i = 0; i < num_colors; i++) {
unsigned int vertex_index = di.get_int32();
if (vertex_index < 0 || vertex_index >= _vertices.size()) {
xfile_cat.error()
<< "Vertex index out of range in MeshVertexColors.\n";
return false;
}
XFileVertex *vertex = _vertices[vertex_index];
vertex->_color[0] = di.get_float32();
vertex->_color[1] = di.get_float32();
vertex->_color[2] = di.get_float32();
vertex->_color[3] = di.get_float32();
vertex->_has_color = true;
}
if (di.get_remaining_size() != 0) {
xfile_cat.warning()
<< "Ignoring " << di.get_remaining_size()
<< " trailing MeshVertexColors.\n";
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_uv_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// MeshTextureCoords template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_uv_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
int num_vertices = di.get_int32();
if (num_vertices != _vertices.size()) {
xfile_cat.error()
<< "Wrong number of vertices in MeshTextureCoords.\n";
return false;
}
int i;
for (i = 0; i < num_vertices; i++) {
XFileVertex *vertex = _vertices[i];
vertex->_uv[0] = di.get_float32();
vertex->_uv[1] = di.get_float32();
vertex->_has_uv = true;
}
if (di.get_remaining_size() != 0) {
xfile_cat.warning()
<< "Ignoring " << di.get_remaining_size()
<< " trailing MeshTextureCoords.\n";
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_skin_weights_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// SkinWeights template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_skin_weights_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
// Create a new SkinWeightsData record for the table. We'll need
// this data later when we create the vertices.
_skin_weights.push_back(SkinWeightsData());
SkinWeightsData &data = _skin_weights.back();
// The DX system encodes a pointer to a character string in four
// bytes within the stream. Weird, in a Microsofty sort of way.
data._joint_name = (const char *)di.get_uint32();
int num_weights = di.get_int32();
vector_int vindices;
vindices.reserve(num_weights);
// Unpack the list of vertices first
int i;
for (i = 0; i < num_weights; i++) {
int vindex = di.get_int32();
if (vindex < 0 || vindex > (int)_vertices.size()) {
xfile_cat.error()
<< "Illegal vertex index " << vindex << " in SkinWeights.\n";
return false;
}
vindices.push_back(vindex);
}
// Then unpack the weight for each vertex.
for (i = 0; i < num_weights; i++) {
float weight = di.get_float32();
data._weight_map[vindices[i]] = weight;
}
// Finally, read the matrix offset.
data._matrix_offset.read_datagram(di);
return true;
}
////////////////////////////////////////////////////////////////////
// Function: XFileMesh::read_material_list_data
// Access: Public
// Description: Fills the structure based on the raw data from the
// MaterialList template.
////////////////////////////////////////////////////////////////////
bool XFileMesh::
read_material_list_data(const Datagram &raw_data) {
DatagramIterator di(raw_data);
di.get_int32(); /* num_materials */
unsigned int num_faces = di.get_int32();
if (num_faces > _faces.size()) {
xfile_cat.error()
<< "Too many faces in MaterialList.\n";
return false;
}
int material_index = -1;
unsigned int i = 0;
while (i < num_faces) {
XFileFace *face = _faces[i];
material_index = di.get_int32();
face->_material_index = material_index;
i++;
}
// The rest of the faces get the same material index as the last
// one in the list.
while (i < (int)_faces.size()) {
XFileFace *face = _faces[i];
face->_material_index = material_index;
i++;
}
if (di.get_remaining_size() != 0) {
xfile_cat.warning()
<< "Ignoring " << di.get_remaining_size()
<< " trailing MeshMaterialList.\n";
}
return true;
}
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