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////////////////////////////////////////////////////////
//
// GEM - Graphics Environment for Multimedia
//
// zmoelnig@iem.kug.ac.at
//
// Implementation file
//
// Copyright (c) 1997-1998 Mark Danks.
// Copyright (c) Günther Geiger.
// Copyright (c) 2001-2011 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.at
// For information on usage and redistribution, and for a DISCLAIMER OF ALL
// WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
//
/////////////////////////////////////////////////////////
#include "pix_coordinate.h"
#include "Gem/State.h"
#include "Gem/Image.h"
CPPEXTERN_NEW(pix_coordinate);
/////////////////////////////////////////////////////////
//
// pix_coordinate
//
/////////////////////////////////////////////////////////
// Constructor
//
/////////////////////////////////////////////////////////
pix_coordinate :: pix_coordinate()
: m_coords(NULL), m_rectcoords(NULL), m_numCoords(0),
m_oldTexCoords(NULL), m_oldNumCoords(0)
{
// the size inlet
inlet_new(this->x_obj, &this->x_obj->ob_pd, gensym("list"), gensym("coords"));
}
/////////////////////////////////////////////////////////
// Destructor
//
/////////////////////////////////////////////////////////
pix_coordinate :: ~pix_coordinate()
{
if(m_coords)delete [] m_coords;
if(m_rectcoords)delete [] m_rectcoords;
}
/////////////////////////////////////////////////////////
// render
//
/////////////////////////////////////////////////////////
void pix_coordinate :: render(GemState *state)
{
pixBlock*img=NULL;
state->get(GemState::_PIX, img);
state->get(GemState::_GL_TEX_COORDS, m_oldTexCoords);
state->get(GemState::_GL_TEX_NUMCOORDS, m_oldNumCoords);
state->get(GemState::_GL_TEX_TYPE, m_oldTexType);
if (m_oldTexType && m_numCoords){
state->set(GemState::_GL_TEX_NUMCOORDS, m_numCoords);
if(m_oldTexType==2 && img!=NULL){
// since we are using rectangle-textures (state->texture==2),
// we want to scale the coordinates by the image-dimensions if they are available
t_float xsize = (t_float)img->image.xsize;
t_float ysize = (t_float)img->image.ysize;
for (int i = 0; i < m_numCoords; i++)
{
m_rectcoords[i].s = xsize*m_coords[i].s;
m_rectcoords[i].t = ysize*m_coords[i].t;
}
state->set(GemState::_GL_TEX_COORDS, m_rectcoords);
} else
state->set(GemState::_GL_TEX_COORDS, m_coords);
}
}
/////////////////////////////////////////////////////////
// postrender
//
/////////////////////////////////////////////////////////
void pix_coordinate :: postrender(GemState *state)
{
state->set(GemState::_GL_TEX_COORDS, m_oldTexCoords);
state->set(GemState::_GL_TEX_NUMCOORDS, m_oldNumCoords);
state->set(GemState::_GL_TEX_TYPE, m_oldTexType);
}
/////////////////////////////////////////////////////////
// coordsMess
//
/////////////////////////////////////////////////////////
void pix_coordinate :: coordsMess(int argc, t_atom *argv)
{
if (argc % 2)
{
error("must have a even number of coordinates");
return;
}
int numVals = argc / 2;
if (numVals != m_numCoords)
{
if(m_coords)delete [] m_coords; m_coords = NULL;
if(m_rectcoords)delete[]m_rectcoords; m_rectcoords=NULL;
m_numCoords = numVals;
if (m_numCoords == 0)return;
m_coords = new TexCoord[m_numCoords];
m_rectcoords=new TexCoord[m_numCoords];
}
for (int i = 0; i < numVals; i++)
{
m_coords[i].s = atom_getfloat(&argv[2 * i]);
m_coords[i].t = atom_getfloat(&argv[2 * i + 1]);
}
}
/////////////////////////////////////////////////////////
// static member function
//
/////////////////////////////////////////////////////////
void pix_coordinate :: obj_setupCallback(t_class *classPtr)
{
class_addmethod(classPtr, reinterpret_cast<t_method>(&pix_coordinate::coordsMessCallback),
gensym("coords"), A_GIMME, A_NULL);
}
void pix_coordinate :: coordsMessCallback(void *data, t_symbol *, int argc, t_atom *argv)
{
GetMyClass(data)->coordsMess(argc, argv);
}
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