src/rotate.h

   1 /*!
   2  * \file src/rotate.h
   3  *
   4  * \brief Prototypes for transform routines.
   5  *
   6  * <hr>
   7  *
   8  * <h1><b>Copyright.</b></h1>\n
   9  *
  10  * PCB, interactive printed circuit board design
  11  *
  12  * Copyright (C) 1994,1995,1996 Thomas Nau
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  *
  28  * Contact addresses for paper mail and Email:
  29  *
  30  * Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
  31  *
  32  * Thomas.Nau@rz.uni-ulm.de
  33  */
  34
  35 #ifndef PCB_ROTATE_H
  36 #define PCB_ROTATE_H
  37
  38 #include "global.h"
  39
  40 /* ---------------------------------------------------------------------------
  41  * some useful transformation macros and constants
  42  */
  43 #define ROTATE(x,y,x0,y0,n)                                                     \
  44         {                                                                                               \
  45                 Coord   dx = (x)-(x0),                                  \
  46                                         dy = (y)-(y0);                                  \
  47                                                                                                         \
  48                 switch(n & 0x03)                                                                        \
  49                 {                                                                                       \
  50                         case 1:         (x)=(x0)+dy; (y)=(y0)-dx;       \
  51                                                 break;                                          \
  52                         case 2:         (x)=(x0)-dx; (y)=(y0)-dy;       \
  53                                                 break;                                          \
  54                         case 3:         (x)=(x0)-dy; (y)=(y0)+dx;       \
  55                                                 break;                                          \
  56                         default:        break;                                          \
  57                 }                                                                                       \
  58         }
  59 #define ROTATE_VIA_LOWLEVEL(v,x0,y0,n)  ROTATE((v)->X,(v)->Y,(x0),(y0),(n))
  60 #define ROTATE_PIN_LOWLEVEL(p,x0,y0,n)  ROTATE((p)->X,(p)->Y,(x0),(y0),(n))
  61 #define ROTATE_PAD_LOWLEVEL(p,x0,y0,n)  \
  62         RotateLineLowLevel(((LineType *) (p)),(x0),(y0),(n))
  63
  64 #define ROTATE_TYPES    (ELEMENT_TYPE | TEXT_TYPE | ELEMENTNAME_TYPE | ARC_TYPE)
  65
  66
  67 void RotateLineLowLevel (LineType *, Coord, Coord, unsigned);
  68 void RotateArcLowLevel (ArcType *, Coord, Coord, unsigned);
  69 void RotateBoxLowLevel (BoxType *, Coord, Coord, unsigned);
  70 void RotateTextLowLevel (TextType *, Coord, Coord, unsigned);
  71 void RotatePolygonLowLevel (PolygonType *, Coord, Coord, unsigned);
  72 void RotateElementLowLevel (DataType *, ElementType *, Coord, Coord, unsigned);
  73 void *RotateObject (int, void *, void *, void *, Coord, Coord,
  74                     unsigned);
  75 void RotateScreenObject (Coord, Coord, unsigned);
  76
  77 #endif