examples/3d-demo/object.hpp

#include "32blit.hpp"

using namespace blit;

struct bbox {
  Vec3 v1, v2;          // opposing (min / max) corners of bounding box
};

struct Face {
  Pen color;
  uint32_t v[3];  // vertex indices
  uint32_t t[3];  // texture indices
  uint32_t n[3];  // normal indices
};

class Group {
public:
  Group();
  ~Group();

  Face     *f;            // pointer to face list
  uint32_t  fc = 0;           // face count
  bool      visible = true;

  Surface * t = NULL;
};


class Object {
public:
  Vec3   *v;            // pointer to vertex list
  uint32_t  vc = 0;           // vertex count
  Vec2   *t;            // pointer to texture coordinate list
  uint32_t  tc = 0;           // texture coordinate count
  Vec3   *n;            // pointer to normal Vec3s list
  uint32_t  nc = 0;           // texture coordinate count

  Group    *g;            // pointer to group list
  uint32_t  gc = 0;           // group count

  bbox      bounds;       // bounding box

  Mat4      m;            // transformation matrix    

  // !! could be nice to have the option to point to a shader program?
  // !! if you have a Pen shader then you really need a depth shader too?

  Object();
  //object(vertex *v, uint32_t vc, face *f, uint32_t fc, Vec3 *t, uint32_t tc);
  ~Object();

  void update_bbox();
  static Object *load_obj(char *data);
};