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  *  RCS: $Id$
  26  */
  27
  28 /* prototypes for transform routines
  29  */
  30
  31 #ifndef PCB_ROTATE_H
  32 #define PCB_ROTATE_H
  33
  34 #include "global.h"
  35
  36 /* ---------------------------------------------------------------------------
  37  * some useful transformation macros and constants
  38  */
  39 #define ROTATE(x,y,x0,y0,n)                                                     \
  40         {                                                                                               \
  41                 Coord   dx = (x)-(x0),                                  \
  42                                         dy = (y)-(y0);                                  \
  43                                                                                                         \
  44                 switch(n & 0x03)                                                                        \
  45                 {                                                                                       \
  46                         case 1:         (x)=(x0)+dy; (y)=(y0)-dx;       \
  47                                                 break;                                          \
  48                         case 2:         (x)=(x0)-dx; (y)=(y0)-dy;       \
  49                                                 break;                                          \
  50                         case 3:         (x)=(x0)-dy; (y)=(y0)+dx;       \
  51                                                 break;                                          \
  52                         default:        break;                                          \
  53                 }                                                                                       \
  54         }
  55 #define ROTATE_VIA_LOWLEVEL(v,x0,y0,n)  ROTATE((v)->X,(v)->Y,(x0),(y0),(n))
  56 #define ROTATE_PIN_LOWLEVEL(p,x0,y0,n)  ROTATE((p)->X,(p)->Y,(x0),(y0),(n))
  57 #define ROTATE_PAD_LOWLEVEL(p,x0,y0,n)  \
  58         RotateLineLowLevel(((LineTypePtr) (p)),(x0),(y0),(n))
  59
  60 #define ROTATE_TYPES    (ELEMENT_TYPE | TEXT_TYPE | ELEMENTNAME_TYPE | ARC_TYPE)
  61
  62
  63 void RotateLineLowLevel (LineTypePtr, Coord, Coord, unsigned);
  64 void RotateArcLowLevel (ArcTypePtr, Coord, Coord, unsigned);
  65 void RotateBoxLowLevel (BoxTypePtr, Coord, Coord, unsigned);
  66 void RotateTextLowLevel (TextTypePtr, Coord, Coord, unsigned);
  67 void RotatePolygonLowLevel (PolygonTypePtr, Coord, Coord, unsigned);
  68 void RotateElementLowLevel (DataTypePtr, ElementTypePtr, Coord, Coord, unsigned);
  69 void *RotateObject (int, void *, void *, void *, Coord, Coord,
  70                     unsigned);
  71 void RotateScreenObject (Coord, Coord, unsigned);
  72
  73 #endif