leocad/common/object.h

#ifndef _OBJECT_H_
#define _OBJECT_H_

class File;
class Matrix;
class Object;
/*
#define LC_OBJECT_NAME_LEN         80
#define LC_OBJECT_HIDDEN         0x01
#define LC_OBJECT_SELECTED       0x02
#define LC_OBJECT_FOCUSED        0x04
*/

typedef enum
{
  LC_OBJECT_PIECE,
  LC_OBJECT_CAMERA,
  LC_OBJECT_CAMERA_TARGET,
  LC_OBJECT_LIGHT,
  LC_OBJECT_LIGHT_TARGET,
  LC_OBJECT_CURVE,
  LC_OBJECT_CURVE_POINT,
  //  LC_OBJECT_GROUP,
  //  LC_OBJECT_GROUP_PIVOT,
} LC_OBJECT_TYPE;

// key handling
typedef struct LC_OBJECT_KEY
{
  unsigned short  time;
  float	          param[4];
  unsigned char   type;
  LC_OBJECT_KEY*  next;
} LC_OBJECT_KEY;

typedef struct
{
  const char *description;
  unsigned char size; // number of floats
  unsigned char type;
} LC_OBJECT_KEY_INFO;

// rendering parameters
typedef struct
{
  bool lighting;
  bool edges;
  float fLineWidth;

  unsigned char lastcolor;
  bool transparent;
} LC_RENDER_INFO;

// Callback "closure" struct, used to make the necessary parameters known to
// the callback function.
typedef struct LC_CLICKLINE
{
  float a1, b1, c1;
  float a2, b2, c2;
  float mindist;
  Object *pClosest;

  double PointDistance (float *point);

} LC_CLICKLINE;

class Object
{
public:
	Object (LC_OBJECT_TYPE nType);
	virtual ~Object ();

public:
	// Move the object.
	virtual void Move(unsigned short nTime, bool bAnimation, bool bAddKey, float dx, float dy, float dz) = 0;

	// Check if the object intersects the ray.
	virtual void MinIntersectDist(LC_CLICKLINE* pLine) = 0;

	// bSelecting is the action (add/remove), bFocus means "add focus if selecting"
	// or "remove focus only if deselecting", bMultiple = Ctrl key is down
	virtual void Select(bool bSelecting, bool bFocus, bool bMultiple) = 0;

	// Check if the object intersects the volume specified by a given set of planes.
	virtual bool IntersectsVolume(const class Vector4* Planes, int NumPlanes) = 0;


  /*
  virtual void UpdatePosition (unsigned short nTime, bool bAnimation) = 0;
  virtual void CompareBoundingBox (float *box) { };
  virtual void Render (LC_RENDER_INFO* pInfo) = 0;

  // Query functions
  virtual bool IsSelected () const
    { return (m_nState & LC_OBJECT_SELECTED) != 0; };
  virtual bool IsFocused () const
    { return (m_nState & LC_OBJECT_FOCUSED) != 0; };
  virtual bool IsVisible (unsigned short nTime, bool bAnimation) const
    { return (m_nState & LC_OBJECT_HIDDEN) == 0; }
  const char* GetName() const
    { return m_strName; }


  // State change, most classes will have to replace these functions
  virtual void SetSelection (bool bSelect, void *pParam = NULL)
    {
      if (bSelect)
	m_nState |= LC_OBJECT_SELECTED;
      else
	m_nState &= ~(LC_OBJECT_SELECTED | LC_OBJECT_FOCUSED);
    };
  virtual void SetFocus (bool bFocus, void *pParam = NULL)
    {
      if (bFocus)
	m_nState |= (LC_OBJECT_SELECTED | LC_OBJECT_FOCUSED);
      else
	m_nState &= ~LC_OBJECT_FOCUSED;
    };
  virtual void SetVisible (bool bVisible)
    {
      if (bVisible)
	m_nState &= ~LC_OBJECT_HIDDEN;
      else
      {
	m_nState |= LC_OBJECT_HIDDEN;
	SetSelection (false, NULL);
      }
    }
  virtual bool SetColor (int nColor)
    { return false; };
  */

  // determine the object type
  bool IsPiece () const
    { return m_nObjectType == LC_OBJECT_PIECE; }
  bool IsCamera () const
    { return m_nObjectType == LC_OBJECT_CAMERA; }
  bool IsLight () const
    { return m_nObjectType == LC_OBJECT_LIGHT; }
  bool IsCurve () const
    { return m_nObjectType == LC_OBJECT_CURVE; }

  LC_OBJECT_TYPE GetType () const
    { return m_nObjectType; }

  virtual const char* GetName() const = 0;
  /*
  // For linked lists
  Object* m_pNext;
  Object* m_pNextRender;
  Object* m_pParent;

  Object* GetTopAncestor () const
    { return m_pParent ? m_pParent->GetTopAncestor () : this; }
  */

 protected:
  //  Str m_strName;
  //  unsigned char m_nState;

  virtual bool FileLoad (File& file);
  virtual void FileSave (File& file) const;


  // Key handling stuff
 public:
  void CalculateSingleKey (unsigned short nTime, bool bAnimation, int keytype, float *value) const;
  void ChangeKey (unsigned short time, bool animation, bool addkey, const float *param, unsigned char keytype);
  virtual void InsertTime (unsigned short start, bool animation, unsigned short time);
  virtual void RemoveTime (unsigned short start, bool animation, unsigned short time);

  int GetKeyTypeCount () const
    { return m_nKeyInfoCount; }
  const LC_OBJECT_KEY_INFO* GetKeyTypeInfo (int index) const
    { return &m_pKeyInfo[index]; };
  const float* GetKeyTypeValue (int index) const
    { return m_pKeyValues[index]; };

 protected:
  void RegisterKeys (float *values[], LC_OBJECT_KEY_INFO* info, int count);
  void CalculateKeys (unsigned short nTime, bool bAnimation);

 private:
  void RemoveKeys ();

  LC_OBJECT_KEY* m_pAnimationKeys;
  LC_OBJECT_KEY* m_pInstructionKeys;
  float **m_pKeyValues;

  LC_OBJECT_KEY_INFO *m_pKeyInfo;
  int m_nKeyInfoCount;


  // Bounding box stuff
 protected:
  double BoundingBoxIntersectDist (LC_CLICKLINE* pLine) const;
  void BoundingBoxCalculate (float pos[3]);
  void BoundingBoxCalculate (Matrix *mat);
  void BoundingBoxCalculate (Matrix *mat, float Dimensions[6]);

 private:
  bool BoundingBoxIntersectionbyLine (double a1, double b1, double c1, double a2, double b2, double c2,
				      double *x, double *y, double *z) const;
  bool BoundingBoxPointInside (double x, double y, double z) const;
  float m_fBoxPlanes[4][6];


  // Object type
 private:
  LC_OBJECT_TYPE m_nObjectType;
};

#endif