IABSD.fr/xenocara/app/xeyes/transform.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : matthieu
  Date : 2010-11-25 21:59:45
  Hash : 52857b25
  Message : Update to xeyes 1.1.1

• app/xeyes/transform.h

• /*
   * header file for transformed coordinate system.  No rotations
   * supported, as elipses cannot be rotated in X.
   */
  
  typedef struct _transform {
  	double	mx, bx;
  	double	my, by;
  } Transform;
  
  typedef struct _TPoint {
  	double	x, y;
  } TPoint;
  
  typedef struct _TRectangle {
  	double	x, y, width, height;
  } TRectangle;
  
  # define Xx(x,y,t)	((int)((t)->mx * (x) + (t)->bx + 0.5))
  # define Xy(x,y,t)	((int)((t)->my * (y) + (t)->by + 0.5))
  # define Xwidth(w,h,t)	((int)((t)->mx * (w) + 0.5))
  # define Xheight(w,h,t)	((int)((t)->my * (h) + 0.5))
  # define Tx(x,y,t)	((((double) (x)) - (t)->bx) / (t)->mx)
  # define Ty(x,y,t)	((((double) (y)) - (t)->by) / (t)->my)
  # define Twidth(w,h,t)	(((double) (w)) / (t)->mx)
  # define Theight(w,h,t)	(((double) (h)) / (t)->my)
  
  extern void Trectangle (const Transform *t, const TRectangle *in, TRectangle *out);
  extern void SetTransform (Transform *t,
                            int xx1, int xx2, int xy1, int xy2,
                            double tx1, double tx2, double ty1, double ty2);