src/rotate.h

   1 /*
   2  *                            COPYRIGHT
   3  *
   4  *  PCB, interactive printed circuit board design
   5  *  Copyright (C) 1994,1995,1996 Thomas Nau
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  *  Contact addresses for paper mail and Email:
  22  *  Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
  23  *  Thomas.Nau@rz.uni-ulm.de
  24  *
  25  */
  26
  27 /* prototypes for transform routines
  28  */
  29
  30 #ifndef PCB_ROTATE_H
  31 #define PCB_ROTATE_H
  32
  33 #include "global.h"
  34
  35 /* ---------------------------------------------------------------------------
  36  * some useful transformation macros and constants
  37  */
  38 #define ROTATE(x,y,x0,y0,n)                                                     \
  39         {                                                                                               \
  40                 Coord   dx = (x)-(x0),                                  \
  41                                         dy = (y)-(y0);                                  \
  42                                                                                                         \
  43                 switch(n & 0x03)                                                                        \
  44                 {                                                                                       \
  45                         case 1:         (x)=(x0)+dy; (y)=(y0)-dx;       \
  46                                                 break;                                          \
  47                         case 2:         (x)=(x0)-dx; (y)=(y0)-dy;       \
  48                                                 break;                                          \
  49                         case 3:         (x)=(x0)-dy; (y)=(y0)+dx;       \
  50                                                 break;                                          \
  51                         default:        break;                                          \
  52                 }                                                                                       \
  53         }
  54 #define ROTATE_VIA_LOWLEVEL(v,x0,y0,n)  ROTATE((v)->X,(v)->Y,(x0),(y0),(n))
  55 #define ROTATE_PIN_LOWLEVEL(p,x0,y0,n)  ROTATE((p)->X,(p)->Y,(x0),(y0),(n))
  56 #define ROTATE_PAD_LOWLEVEL(p,x0,y0,n)  \
  57         RotateLineLowLevel(((LineType *) (p)),(x0),(y0),(n))
  58
  59 #define ROTATE_TYPES    (ELEMENT_TYPE | TEXT_TYPE | ELEMENTNAME_TYPE | ARC_TYPE)
  60
  61
  62 void RotateLineLowLevel (LineType *, Coord, Coord, unsigned);
  63 void RotateArcLowLevel (ArcType *, Coord, Coord, unsigned);
  64 void RotateBoxLowLevel (BoxType *, Coord, Coord, unsigned);
  65 void RotateTextLowLevel (TextType *, Coord, Coord, unsigned);
  66 void RotatePolygonLowLevel (PolygonType *, Coord, Coord, unsigned);
  67 void RotateElementLowLevel (DataType *, ElementType *, Coord, Coord, unsigned);
  68 void *RotateObject (int, void *, void *, void *, Coord, Coord,
  69                     unsigned);
  70 void RotateScreenObject (Coord, Coord, unsigned);
  71
  72 #endif