IABSD.fr/xenocara/app/x11perf/do_complex.c

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• Author : matthieu
  Date : 2015-05-10 09:59:07
  Hash : bf8ccee4
  Message : Update to x11perf 1.6.0

• app/x11perf/do_complex.c

• /*****************************************************************************
  Copyright 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
  
                          All Rights Reserved
  
  Permission to use, copy, modify, and distribute this software and its 
  documentation for any purpose and without fee is hereby granted, 
  provided that the above copyright notice appear in all copies and that
  both that copyright notice and this permission notice appear in 
  supporting documentation, and that the name of Digital not be
  used in advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.  
  
  DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  SOFTWARE.
  
  ******************************************************************************/
  
  #include "x11perf.h"
  
  #define NUM_POINTS 4    /* 4 points to an arrowhead */
  #define NUM_ANGLES 3    /* But mostly it looks like a triangle */
  static XPoint   *points;
  static GC       pgc;
  
  #include <math.h>
  #if defined(QNX4) || defined(__CYGWIN__) || defined(__UNIXOS2__)
  #define PI 3.14159265358979323846
  #else
  #define PI M_PI
  #endif /* QNX4 */
  
  int 
  InitComplexPoly(XParms xp, Parms p, int64_t reps)
  {
      int     i, j, numPoints;
      int     x, y;
      int     size, iradius;
      double  phi, phiinc, radius, delta, phi2;
      XPoint  *curPoint;
  
      pgc = xp->fggc;
  
      size = p->special;
      phi = 0.0;
      delta = 2.0 * PI / ((double) NUM_ANGLES);
      if (xp->version == VERSION1_2) {
  	radius = ((double) size) * sqrt(3.0)/2.0;
  	phiinc = delta/10.0;
      } else {
  	/* Version 1.2's radius computation was completely bogus, and resulted
  	   in triangles with sides about 50% longer than advertised.  Since
  	   in version 1.3 triangles are scaled to cover size^2 pixels, we do
  	   the same computation here.  The arrowheads are a little larger than
  	   simple triangles, because they lose 1/3 of their area due to the
  	   notch cut out from them, so radius has to be sqrt(3/2) larger than
  	   for simple triangles.
  	 */
  	radius = ((double) size) * sqrt(sqrt(4.0/3.0));
  	phiinc = 1.75*PI / ((double) p->objects);
      }
      iradius = (int) radius + 1;
  
      numPoints = (p->objects) * NUM_POINTS;  
      points = (XPoint *)malloc(numPoints * sizeof(XPoint));
      curPoint = points;
      x = iradius;
      y = iradius;
      for (i = 0; i != p->objects; i++) {
  	for (j = 0; j != NUM_ANGLES; j++) {
  	    phi2 = phi + ((double) j) * delta;
  	    curPoint->x = (int) ((double)x + (radius * cos(phi2)) + 0.5);
  	    curPoint->y = (int) ((double)y + (radius * sin(phi2)) + 0.5);
  	    curPoint++;
  	}
  	curPoint->x = x;
  	curPoint->y = y;
  	curPoint++;
  
  	phi += phiinc;
  	y += 2 * iradius;
  	if (y + iradius >= HEIGHT) {
  	    y = iradius;
  	    x += 2 * iradius;
  	    if (x + iradius >= WIDTH) {
  		x = iradius;
  	    }
  	}
      }
      return reps;
  }
  
  void 
  DoComplexPoly(XParms xp, Parms p, int64_t reps)
  {
      int     i, j;
      XPoint  *curPoint;
  
      for (i = 0; i != reps; i++) {
          curPoint = points;
          for (j = 0; j != p->objects; j++) {
              XFillPolygon(xp->d, xp->w, pgc, curPoint, NUM_POINTS, Complex, 
  			 CoordModeOrigin);
              curPoint += NUM_POINTS;
  	  }
          if (pgc == xp->bggc)
              pgc = xp->fggc;
          else
              pgc = xp->bggc;
  	CheckAbort ();
      }
  }
  
  void 
  EndComplexPoly(XParms xp, Parms p)
  {
      free(points);
  }
  
  int 
  InitGeneralPoly(XParms xp, Parms p, int64_t reps)
  {
      int     i, j, numPoints;
      int	    nsides;
      int	    x, y;
      int     size, iradius;
      double  phi, phiinc, inner_radius, outer_radius, delta, phi2;
      XPoint  *curPoint;
  
      pgc = xp->fggc;
      size = p->special;
      nsides = (long) p->font;
      phi = 0.0;
      delta = 2.0 * PI / ((double) nsides);
      phiinc = delta / 10.0;
  
      inner_radius = size / sqrt (nsides * tan (PI / nsides));
      outer_radius = inner_radius / cos (PI / (2 * nsides));
      numPoints = p->objects * nsides;
      points = (XPoint *) malloc (numPoints * sizeof (XPoint));
      curPoint = points;
      iradius = outer_radius + 1;
      x = iradius;
      y = iradius;
      for (i = 0; i < p->objects; i++) {
  	phi2 = phi;
  	for (j = 0; j < nsides; j++) {
  	    curPoint->x = x + (outer_radius * cos(phi2) + 0.5);
  	    curPoint->y = y + (outer_radius * sin(phi2) + 0.5);
  	    curPoint++;
  	    phi2 += delta;
  	}
  	phi += phiinc;
  	y += 2 * iradius;
  	if (y + iradius >= HEIGHT) {
  	    y = iradius;
  	    x += 2 * iradius;
  	    if (x + iradius >= WIDTH) {
  		x = iradius;
  	    }
  	}
      }
      return reps;
  }
  
  void 
  DoGeneralPoly(XParms xp, Parms p, int64_t reps)
  {
      int     i, j;
      int	    nsides;
      int	    mode;
      XPoint  *curPoint;
  
      nsides = (long) p->font;
      mode = (long) p->bfont;
      for (i = 0; i != reps; i++) {
          curPoint = points;
          for (j = 0; j != p->objects; j++) {
              XFillPolygon(xp->d, xp->w, pgc, curPoint, nsides, mode, 
  			 CoordModeOrigin);
              curPoint += nsides;
  	  }
          if (pgc == xp->bggc)
              pgc = xp->fggc;
          else
              pgc = xp->bggc;
  	CheckAbort ();
      }
  }