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pandatool/src/mayaegg/mayaToEggConverter.h

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// Filename: mayaToEggConverter.h
// Created by:  drose (10Nov99)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, 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://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#ifndef MAYATOEGGCONVERTER_H
#define MAYATOEGGCONVERTER_H

#include "pandatoolbase.h"
#include "somethingToEggConverter.h"

#include "mayaApi.h"
#include "mayaShaders.h"
#include "eggTextureCollection.h"
#include "distanceUnit.h"
#include "coordinateSystem.h"

#include "pre_maya_include.h"
#include <maya/MDagPath.h>
#include "post_maya_include.h"

class EggData;
class EggGroup;
class EggTable;
class EggVertexPool;
class EggNurbsCurve;
class EggPrimitive;
class EggXfmSAnim;
class MayaShaderColorDef;

class MDagPath;
class MFnDagNode;
class MFnNurbsSurface;
class MFnNurbsCurve;
class MFnMesh;
class MPointArray;
class MFloatArray;

////////////////////////////////////////////////////////////////////
//       Class : MayaToEggConverter
// Description : This class supervises the construction of an EggData
//               structure from a single Maya file, or from the data
//               already in the global Maya model space.
//
//               Note that since the Maya API presents just one global
//               model space, it is not possible to simultaneously
//               load two distinct Maya files.
////////////////////////////////////////////////////////////////////
class MayaToEggConverter : public SomethingToEggConverter {
public:
  MayaToEggConverter(const string &program_name = "");
  MayaToEggConverter(const MayaToEggConverter &copy);
  virtual ~MayaToEggConverter();

  virtual SomethingToEggConverter *make_copy();

  virtual string get_name() const;
  virtual string get_extension() const;

  virtual bool convert_file(const Filename &filename);
  bool convert_maya(bool from_selection);

  bool open_api();
  void close_api();

private:
  bool convert_flip(double start_frame, double end_frame, 
                    double frame_inc, double output_frame_rate);
  bool convert_char_model();
  bool convert_char_chan(double start_frame, double end_frame, 
                         double frame_inc, double output_frame_rate);
  bool convert_hierarchy(EggGroupNode *egg_root);
  bool process_model_node(const MDagPath &dag_path, EggGroupNode *egg_root);
  bool process_chan_node(const MDagPath &dag_path, EggGroupNode *egg_root);
  void get_transform(const MDagPath &dag_path, EggGroup *egg_group);

  // I ran into core dumps trying to pass around a MFnMesh object by
  // value.  From now on, all MFn* objects will be passed around by
  // reference.
  void make_nurbs_surface(const MDagPath &dag_path, 
                          MFnNurbsSurface &surface,
                          EggGroup *group, EggGroupNode *egg_root);
  EggNurbsCurve *make_trim_curve(const MFnNurbsCurve &curve,
                                 const string &nurbs_name,
                                 EggGroupNode *egg_group,
                                 int trim_curve_index);
  void make_nurbs_curve(const MDagPath &dag_path, 
                        const MFnNurbsCurve &curve,
                        EggGroup *group, EggGroupNode *egg_root);
  void make_polyset(const MDagPath &dag_path,
                    const MFnMesh &mesh,
                    EggGroup *egg_group, EggGroupNode *egg_root,
                    MayaShader *default_shader = NULL);
  void make_locator(const MDagPath &dag_path, const MFnDagNode &dag_node,
                    EggGroup *egg_group, EggGroupNode *egg_root);
  bool get_vertex_weights(const MDagPath &dag_path, const MFnMesh &mesh,
                          EggGroupNode *egg_root,
                          pvector<EggGroup *> &joints, MFloatArray &weights);
  class JointAnim {
  public:
    MDagPath _dag_path;
    EggTable *_table;
    EggXfmSAnim *_anim;
  };

  EggGroup *get_egg_group(const MDagPath &dag_path, EggGroupNode *egg_root);
  EggGroup *r_get_egg_group(const string &name, const MDagPath &dag_path,
                            EggGroupNode *egg_root);
  JointAnim *get_egg_table(const MDagPath &dag_path, EggGroupNode *egg_root);
  JointAnim *get_egg_table(const string &name, EggGroupNode *egg_root);
  void set_shader_attributes(EggPrimitive &primitive,
                             const MayaShader &shader);
  void apply_texture_properties(EggTexture &tex, 
                                const MayaShaderColorDef &color_def);
  bool compare_texture_properties(EggTexture &tex, 
                                  const MayaShaderColorDef &color_def);

  bool reparent_decals(EggGroupNode *egg_parent);

  typedef pmap<string, EggGroup *> Groups;
  Groups _groups;

  typedef pmap<string, JointAnim *> Tables;
  Tables _tables;

  string _program_name;
  bool _from_selection;

public:
  MayaShaders _shaders;
  EggTextureCollection _textures;
  PT(MayaApi) _maya;

  bool _polygon_output;
  double _polygon_tolerance;

  enum TransformType {
    TT_invalid,
    TT_all,
    TT_model,
    TT_dcs,
    TT_none,
  };
  TransformType _transform_type;

  static TransformType string_transform_type(const string &arg);
};


#endif

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