1. Coin3D
  2. Coin

Source

Coin / src / nodes / SoTextureCoordinateCylinder.cpp

Øystein Handegar… 4f9fcfe 
Marius Kintel 3ba6b41 




























Øystein Handegar… 4f9fcfe 




Peder Blekken 9f396a9 
Morten Eriksen ec6dbae 
Morten Eriksen b60274e 

Morten Eriksen 37c5269 

Morten Eriksen b60274e 
Morten Eriksen 37c5269 
Morten Eriksen ec6dbae 
Øystein Handegar… 4f9fcfe 
Øystein Handegar… f51956b 
Øystein Handegar… 4f9fcfe 
Morten Eriksen e711aed 


Jostein 62cd825 
Morten Eriksen e711aed 



















Lars J. Aas 92263e4 

Morten Eriksen e711aed 

Øystein Handegar… f51956b 

















Jostein 62cd825 
Øystein Handegar… f51956b 


Morten Eriksen e711aed 
Øystein Handegar… 4f9fcfe 








Øystein Handegar… f51956b 








Øystein Handegar… 4f9fcfe 









Morten Eriksen e711aed 




Øystein Handegar… 4f9fcfe 









Peder Blekken 3a62828 


Øystein Handegar… 4f9fcfe 






Øystein Handegar… 3e4dc0c 

Øystein Handegar… 4f9fcfe 





Morten Eriksen ec6dbae 
Øystein Handegar… 4f9fcfe 
Peder Blekken 725d60b 


Øystein Handegar… 4f9fcfe 









Øystein Handegar… f51956b 


Øystein Handegar… 4f9fcfe 










Øystein Handegar… f51956b 

Øystein Handegar… d29824d 

Øystein Handegar… f51956b 

Øystein Handegar… d29824d 

Øystein Handegar… f51956b 

Øystein Handegar… d29824d 
Øystein Handegar… f51956b 
Øystein Handegar… 4f9fcfe 


Øystein Handegar… f51956b 


Øystein Handegar… 4f9fcfe 













Øystein Handegar… f51956b 



Øystein Handegar… 4f9fcfe 








Øystein Handegar… d29824d 


Øystein Handegar… 4f9fcfe 
























Peder Blekken 3a62828 






Peder Blekken 725d60b 


Øystein Handegar… 4f9fcfe 




Peder Blekken 3a62828 
Øystein Handegar… f51956b 



Øystein Handegar… c91fd7c 

Peder Blekken 725d60b 





Øystein Handegar… c91fd7c 
Øystein Handegar… 4f9fcfe 















Lars J. Aas 3d8d5c1 
/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\**************************************************************************/

/*!
  \class SoTextureCoordinateCylinder include/Inventor/nodes/SoTextureCoordinateCylinder.h
  \brief The SoTextureCoordinateCylinder class autogenerates cylinder mapped texture coordinated for shapes.
  \ingroup nodes

  <b>FILE FORMAT/DEFAULTS:</b>
  \code
    TextureCoordinateCylinder {
    }
  \endcode

  \since Coin 2.3
*/
// FIXME: Add a better class description (20040123 handegar)

// *************************************************************************

#include <Inventor/nodes/SoTextureCoordinateCylinder.h>
#include "coindefs.h"

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG

#include <Inventor/C/glue/gl.h>
#include <Inventor/SbBox3f.h>
#include <Inventor/SoFullPath.h>
#include <Inventor/actions/SoCallbackAction.h>
#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/actions/SoPickAction.h>
#include <Inventor/caches/SoBoundingBoxCache.h>
#include <Inventor/elements/SoGLCacheContextElement.h>
#include <Inventor/elements/SoGLMultiTextureCoordinateElement.h>
#include <Inventor/elements/SoTextureUnitElement.h>
#include <Inventor/misc/SoState.h>
#include <Inventor/nodes/SoNode.h>
#include <Inventor/nodes/SoShape.h>
#include <Inventor/threads/SbStorage.h>

#include "nodes/SoSubNodeP.h"

// *************************************************************************

typedef struct {
  SbVec3f origo;
  SbBox3f boundingbox;
  SoNode * currentshape;
  SoState * currentstate;
  SbVec4f texcoordreturn;
} so_texcoordcylinder_data;

static void
so_texcoordcylinder_construct_data(void * closure)
{
  so_texcoordcylinder_data * data = (so_texcoordcylinder_data *) closure;
  data->currentshape = NULL;
  data->currentstate = NULL;
  data->origo = SbVec3f(0,0,0);
}

static void
so_texcoordcylinder_destruct_data(void * COIN_UNUSED_ARG(closure))
{ 
}

// *************************************************************************

class SoTextureCoordinateCylinderP {

public:
  SoTextureCoordinateCylinderP(SoTextureCoordinateCylinder * texturenode) 
    : master(texturenode) { }
  
  SbVec4f calculateTextureCoordinate(SbVec3f point, SbVec3f n);
  
  so_texcoordcylinder_data * so_texcoord_get_data() {
    so_texcoordcylinder_data * data = NULL;
    data = (so_texcoordcylinder_data *) this->so_texcoord_storage->get();
    assert(data && "Error retrieving thread data.");
    return data;
  }
    
  SbStorage * so_texcoord_storage;

private:
  SoTextureCoordinateCylinder * master;
};


static const SbVec4f & textureCoordinateCylinderCallback(void * userdata, const SbVec3f & point, const SbVec3f & normal);

#define PRIVATE(p) (p->pimpl)
#define PUBLIC(p) (p->master)

// *************************************************************************

SO_NODE_SOURCE(SoTextureCoordinateCylinder);

// *************************************************************************

/*!
  Constructor.
*/
SoTextureCoordinateCylinder::SoTextureCoordinateCylinder(void)
{

  PRIVATE(this) = new SoTextureCoordinateCylinderP(this);
  SO_NODE_INTERNAL_CONSTRUCTOR(SoTextureCoordinateCylinder);

  PRIVATE(this)->so_texcoord_storage = new SbStorage(sizeof(so_texcoordcylinder_data),
                                                     so_texcoordcylinder_construct_data, 
                                                     so_texcoordcylinder_destruct_data);
}

/*!
  Destructor.
*/
SoTextureCoordinateCylinder::~SoTextureCoordinateCylinder()
{
  delete pimpl->so_texcoord_storage;
  delete PRIVATE(this);
}

// Documented in superclass.
void
SoTextureCoordinateCylinder::initClass(void)
{
  SO_NODE_INTERNAL_INIT_CLASS(SoTextureCoordinateCylinder, SO_FROM_COIN_2_3);
  
  SO_ENABLE(SoGLRenderAction, SoGLMultiTextureCoordinateElement);
  SO_ENABLE(SoCallbackAction, SoMultiTextureCoordinateElement);
  SO_ENABLE(SoPickAction, SoMultiTextureCoordinateElement);

}

const SbVec4f &
textureCoordinateCylinderCallback(void * userdata, 
                          const SbVec3f & point, 
                          const SbVec3f & normal)
{
  
  SoTextureCoordinateCylinderP * pimpl = (SoTextureCoordinateCylinderP *) userdata;
  so_texcoordcylinder_data * data = pimpl->so_texcoord_get_data();
 
  SoState * state = data->currentstate;
  SoFullPath * path = (SoFullPath *) state->getAction()->getCurPath();
  SoNode * node = path->getTail();

  if (!node->isOfType(SoShape::getClassTypeId())) {
    // FIXME: A better way to handle this? (20040122 handegar)
    assert(FALSE && "TextureCoordinateCylinder callback called for a non-SoShape node.");
  }

  // Cast the node into a shape
  SoShape * shape = (SoShape *) node;

  if (shape != data->currentshape) {       
    data->boundingbox.makeEmpty();
    const SoBoundingBoxCache * bboxcache = shape->getBoundingBoxCache();    
    if (bboxcache && bboxcache->isValid(state)) {
      data->boundingbox = bboxcache->getProjectedBox();
      data->origo = data->boundingbox.getCenter();
    }
    else {
      shape->computeBBox(state->getAction(), data->boundingbox, data->origo);
      data->origo = data->boundingbox.getCenter();
    }
    data->currentshape = shape;
  }

  const SbVec4f & ret = pimpl->calculateTextureCoordinate(point, normal);

  data->texcoordreturn = ret;
  return data->texcoordreturn;
  
}

SbVec4f
SoTextureCoordinateCylinderP::calculateTextureCoordinate(SbVec3f point, SbVec3f n)
{
 
  // FIXME: This way of mapping will always lead to artifacts in the
  // change between 360 and 0 degrees around the Y-axis. This is
  // unavoidable as the callback cannot predict when the last vertex
  // will be received, and therefore be able to patch up the
  // transition. (20040127 handegar)
 
  SbVec4f tc;
  so_texcoordcylinder_data * data = this->so_texcoord_get_data();

  const SbVec3f bmax = data->boundingbox.getMax();
  const SbVec3f bmin = data->boundingbox.getMin();

  double maxv = fabs(n[0]);
  int maxi = 0;
      
  if (fabs(n[1]) > maxv) { maxi = 1; maxv = fabs(n[1]); }
  if (fabs(n[2]) > maxv) { maxi = 2; }  

  if (maxi == 1) { // Cylinder top or bottom?

    // FIXME: A nicer solution might be to calculate the angle between
    // the origo<->point and the origo<->bboxcorner before deciding whether this
    // is the cylinder top/bottom or not. (20040127 handegar)
    float d0 = bmax[2] - bmin[2];
    float d1 = bmax[0] - bmin[0];    
    if (d0 == 0.0f) d0 = 1.0f;
    if (d1 == 0.0f) d1 = 1.0f;
    tc = SbVec4f((point[0] - bmin[0]) / d1,
                 (point[2] - bmin[2]) / d0, 
                 0.0f, 1.0f);
    if (n[maxi] > 0.0f) tc[1] = 1.0f - tc[1];        
  }
  else {
    float d = bmax[1] - bmin[1];
    if (d == 0.0f) d = 1.0f;
    tc = SbVec4f((float) (atan2(point[0], point[2]) * (1.0/(2.0*M_PI)) + 0.5), 
                 (point[1] - bmin[1]) / d, 
                 0.0f, 1.0f);
  }

  return tc;

}


// Documented in superclass.
void
SoTextureCoordinateCylinder::doAction(SoAction * action)
{
  so_texcoordcylinder_data * data = pimpl->so_texcoord_get_data();

  data->currentstate = action->getState();      
  data->currentshape = NULL;  
  
  int unit = SoTextureUnitElement::get(data->currentstate);
  SoMultiTextureCoordinateElement::setFunction(data->currentstate, this,
                                               unit, textureCoordinateCylinderCallback,
                                               PRIVATE(this));
}

// Documented in superclass.
void
SoTextureCoordinateCylinder::GLRender(SoGLRenderAction * action)
{  
  so_texcoordcylinder_data * data = pimpl->so_texcoord_get_data();

  data->currentstate = action->getState();      
  data->currentshape = NULL;  
  
  int unit = SoTextureUnitElement::get(data->currentstate);
  const cc_glglue * glue = cc_glglue_instance(SoGLCacheContextElement::get(action->getState()));
  int maxunits = cc_glglue_max_texture_units(glue);
  if (unit < maxunits) {        
    SoMultiTextureCoordinateElement::setFunction(data->currentstate, this,
                                                 unit, textureCoordinateCylinderCallback,
                                                 PRIVATE(this));
  }
}

// Documented in superclass.
void
SoTextureCoordinateCylinder::callback(SoCallbackAction * action)
{
  SoTextureCoordinateCylinder::doAction((SoAction *)action);
}

// Documented in superclass.
void
SoTextureCoordinateCylinder::pick(SoPickAction * action)
{
  SoTextureCoordinateCylinder::doAction((SoAction *)action);
}

#undef PRIVATE
#undef PUBLIC