Scale.cpp

// $Id: Scale.cpp,v 1.58 2005-03-12 00:59:42 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
// 
// Please report all bugs and problems to <gmsh@geuz.org>.

#include "Gmsh.h"
#include "GmshUI.h"
#include "Numeric.h"
#include "Mesh.h"
#include "Draw.h"
#include "Context.h"
#include "Views.h"
#include "gl2ps.h"

extern Context_T CTX;

// Even if all computations in these routines are made in window
// coordinates, double precision is used to work at subpixel accuracy

void draw_scale(Post_View * v,
                double xmin, double ymin, double width, double height,
                double tic, int horizontal)
{
  gl_font(CTX.gl_font_enum, CTX.gl_fontsize);
  double font_h = gl_height(); // total font height
  double font_a = gl_height() - gl_descent();  // height above ref pt

  double box;
  if(horizontal){
    box = width / (v->NbIso ? v->NbIso : 1);   // colorscale box width
  }
  else{
    box = height / (v->NbIso ? v->NbIso : 1);   // colorscale box height
  }

  glPointSize(v->PointSize);
  gl2psPointSize(v->PointSize * CTX.print.eps_point_size_factor);

  glLineWidth(v->LineWidth);
  gl2psLineWidth(v->LineWidth * CTX.print.eps_line_width_factor);

  double ValMin, ValMax;
  if(v->ExternalViewIndex >= 0){
    ValMin = v->ExternalMin;
    ValMax = v->ExternalMax;
  }
  else{
    switch(v->RangeType){
    case DRAW_POST_RANGE_CUSTOM:
      ValMin = v->CustomMin;
      ValMax = v->CustomMax;
      break;
    case DRAW_POST_RANGE_PER_STEP:
      if(v->TimeStepMin && v->TimeStepMax){