SkinInfo.h

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include <map>
#include <vector>
 
#include "COLLADAFWNode.h"
#include "COLLADAFWSkinController.h"
#include "COLLADAFWSkinControllerData.h"
#include "COLLADAFWTypes.h"
#include "COLLADAFWUniqueId.h"
 
#include "BKE_context.hh"
#include "DNA_object_types.h"
 
#include "TransformReader.h"
#include "collada_internal.h"
 
class SkinInfo {
 private:
  /* to build armature bones from inverse bind matrices */
  struct JointData {
    float inv_bind_mat[4][4];      /* joint inverse bind matrix */
    COLLADAFW::UniqueId joint_uid; /* joint node UID */
    // Object *ob_arm;            /* armature object */
  };
 
  float bind_shape_matrix[4][4];
 
  /* data from COLLADAFW::SkinControllerData, each array should be freed */
  COLLADAFW::UIntValuesArray joints_per_vertex;
  COLLADAFW::UIntValuesArray weight_indices;
  COLLADAFW::IntValuesArray joint_indices;
  // COLLADAFW::FloatOrDoubleArray weights;
  std::vector<float> weights;
 
  std::vector<JointData> joint_data; /* index to this vector is joint index */
 
  UnitConverter *unit_converter;
 
  Object *ob_arm;
  COLLADAFW::UniqueId controller_uid;
  Object *parent;
 
 public:
  SkinInfo();
  SkinInfo(const SkinInfo &skin);
  SkinInfo(UnitConverter *conv);
 
  template<typename T> void transfer_array_data(T &src, T &dest);
 
  void transfer_int_array_data_const(const COLLADAFW::IntValuesArray &src,
                                     COLLADAFW::IntValuesArray &dest);
 
  void transfer_uint_array_data_const(const COLLADAFW::UIntValuesArray &src,
                                      COLLADAFW::UIntValuesArray &dest);
 
  void borrow_skin_controller_data(const COLLADAFW::SkinControllerData *skin);
 
  void free();
 
  void add_joint(const COLLADABU::Math::Matrix4 &matrix);
 
  void set_controller(const COLLADAFW::SkinController *co);
 
  Object *create_armature(Main *bmain, Scene *scene, ViewLayer *view_layer);
 
  Object *set_armature(Object *ob_arm);
 
  bool get_joint_inv_bind_matrix(float inv_bind_mat[4][4], COLLADAFW::Node *node);
 
  Object *BKE_armature_from_object();
 
  const COLLADAFW::UniqueId &get_controller_uid();
 
  bool uses_joint_or_descendant(COLLADAFW::Node *node);
 
  void link_armature(bContext *C,
                     Object *ob,
                     std::map<COLLADAFW::UniqueId, COLLADAFW::Node *> &joint_by_uid,
                     TransformReader *tm);
 
  bPoseChannel *get_pose_channel_from_node(COLLADAFW::Node *node);
 
  void set_parent(Object *_parent);
 
  Object *get_parent();
 
  void find_root_joints(const std::vector<COLLADAFW::Node *> &root_joints,
                        std::map<COLLADAFW::UniqueId, COLLADAFW::Node *> &joint_by_uid,
                        std::vector<COLLADAFW::Node *> &result);
 
  bool find_node_in_tree(COLLADAFW::Node *node, COLLADAFW::Node *tree_root);
};