Probe.cpp

// Gmsh - Copyright (C) 1997-2008 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// bugs and problems to <gmsh@geuz.org>.

#include "Probe.h"
#include "Context.h"
#include "OctreePost.h"

#if defined(HAVE_FLTK)
#include "GmshUI.h"
#include "Draw.h"
#endif

extern Context_T CTX;

int GMSH_ProbePlugin::iview = 0;

StringXNumber ProbeOptions_Number[] = {
  {GMSH_FULLRC, "X", GMSH_ProbePlugin::callbackX, 0.},
  {GMSH_FULLRC, "Y", GMSH_ProbePlugin::callbackY, 0.},
  {GMSH_FULLRC, "Z", GMSH_ProbePlugin::callbackZ, 0.},
  {GMSH_FULLRC, "iView", NULL, -1.},
};

extern "C"
{
  GMSH_Plugin *GMSH_RegisterProbePlugin()
  {
    return new GMSH_ProbePlugin();
  }
}

void GMSH_ProbePlugin::draw()
{
#if defined(HAVE_FLTK)
  int num = (int)ProbeOptions_Number[3].def;
  if(num < 0) num = iview;
  if(num >= 0 && num < (int)PView::list.size()){
    double x = ProbeOptions_Number[0].def;
    double y = ProbeOptions_Number[1].def;
    double z = ProbeOptions_Number[2].def;
    glColor4ubv((GLubyte *) & CTX.color.fg);
    glLineWidth(CTX.line_width);
    SBoundingBox3d bb = PView::list[num]->getData()->getBoundingBox();
    if(x >= bb.min().x() && x <= bb.max().x() &&
       y >= bb.min().y() && y <= bb.max().y() &&
       z >= bb.min().z() && z <= bb.max().z()){
      // we're inside the bounding box: draw a large cross
      glBegin(GL_LINES);
      glVertex3d(bb.min().x(), y, z); glVertex3d(bb.max().x(), y, z);
      glVertex3d(x, bb.min().y(), z); glVertex3d(x, bb.max().y(), z);
      glVertex3d(x, y, bb.min().z()); glVertex3d(x, y, bb.max().z());
      glEnd();
    }
    else{
      // draw 10-pixel marker
      double d = 10 * CTX.pixel_equiv_x / CTX.s[0];
      glBegin(GL_LINES);
      glVertex3d(x - d, y, z); glVertex3d(x + d, y, z);
      glVertex3d(x, y - d, z); glVertex3d(x, y + d, z);
      glVertex3d(x, y, z - d); glVertex3d(x, y, z + d);
      glEnd();
    }
    Draw_Sphere(CTX.point_size, x, y, z, 1);
  }
#endif
}

double GMSH_ProbePlugin::callback(int num, int action, double value, double *opt)