IndexedTriangleSet.h

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//    Copyright 2004-2019, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __INDEXEDTRIANGLESET_H__
#define __INDEXEDTRIANGLESET_H__
 
#include <H3D/X3DComposedGeometryNode.h>
#include <H3D/DependentNodeFields.h>
#include <H3D/X3DCoordinateNode.h>
#include <H3D/X3DColorNode.h>
#include <H3D/FloatVertexAttribute.h>
#include <H3D/CoordBoundField.h>
#include <H3D/MFInt32.h>
#include <H3D/SFInt32.h>
 
 
namespace H3D {
 
  class H3DAPI_API IndexedTriangleSet : public X3DComposedGeometryNode {
  public:
    
    H3D_VALUE_EXCEPTION( int, NotEnoughColors );
 
     H3D_VALUE_EXCEPTION( int, NotEnoughTextureCoordinates );
 
    typedef CoordBoundField SFBound;
 
    
    class H3DAPI_API AutoNormal: 
      public TypedField< SFNormalNode,
                         Types< SFBool, SFCoordinateNode, MFInt32, SFBool > > {
      virtual void update();
 
      virtual X3DNormalNode *generateNormalsPerVertex( 
                                                      X3DCoordinateNode *_coord,
                                                      const vector< int > &index,
                                                      bool _ccw );
    
 
      virtual X3DNormalNode *generateNormalsPerFace( 
                                                    X3DCoordinateNode *_coord,
                                                    const vector< int > &index,
                                                    bool _ccw );
 
    };
 
    
    class H3DAPI_API AutoTangent: 
      public TypedField< MFVertexAttributeNode,
  Types< SFBool, SFCoordinateNode, MFInt32, SFTextureCoordinateNode > > {
 
      virtual void update();
 
      virtual void generateTangentsPerVertex( 
                X3DCoordinateNode *_coord,
                X3DTextureCoordinateNode *tex_coord,
                const vector< int > &index,
                FloatVertexAttribute *tangent,
                FloatVertexAttribute *binormal
                );
    
 
      virtual void generateTangentsPerFace( 
             X3DCoordinateNode *_coord,
             X3DTextureCoordinateNode *tex_coord,
             const vector< int > &index,
             FloatVertexAttribute *tangent,
             FloatVertexAttribute *binormal );
 
      Vec3f getTexCoord( X3DCoordinateNode *_coord,
                         X3DTextureCoordinateNode *tex_coord,
                        int index );
 
      void calculateTangent( const Vec3f &a, const Vec3f &b, const Vec3f &c,
                             const Vec3f &ta, const Vec3f &tb, const Vec3f &tc,
                             Vec3f &tangent, Vec3f &binormal );
 
    };
 
    class SFInt32InstanceCount : public OnValueChangeSField< SFInt32 > {
    protected:
      virtual void onValueChange (const H3DInt32 &new_value) {
        IndexedTriangleSet * its = static_cast< IndexedTriangleSet * >(getOwner());
        if( new_value >= 0 ) {
          if( its->displayList->getCacheMode() != H3DDisplayListObject::DisplayList::OFF ) {
            its->displayList->setCacheMode( H3DDisplayListObject::DisplayList::OFF );
          }
        } else {
          if( its->displayList->getCacheMode() != H3DDisplayListObject::DisplayList::OPTIONS ) {
            its->displayList->setCacheMode( H3DDisplayListObject::DisplayList::OPTIONS );
          }
        }
      }
    };
 
    IndexedTriangleSet( Inst< SFNode           > _metadata        = 0,
                        Inst< SFBound          > _bound           = 0,
                        Inst< DisplayList      > _displayList     = 0,
                        Inst< SFColorNode      > _color           = 0,
                        Inst< SFCoordinateNode > _coord           = 0,
                        Inst< SFNormalNode     > _normal          = 0,
                        Inst< SFTextureCoordinateNode > _texCoord = 0,
                        Inst< SFBool           > _ccw             = 0,
                        Inst< SFBool           > _colorPerVertex  = 0,
                        Inst< SFBool           > _normalPerVertex = 0,
                        Inst< SFBool           > _solid           = 0,
                        Inst< MFVertexAttributeNode > _attrib     = 0,
                        Inst< AutoNormal       > _autoNormal      = 0,
                        Inst< MFInt32          > _set_index       = 0,
                        Inst< MFInt32          > _index           = 0,
                        Inst< SFFogCoordinate  > _fogCoord        = 0,
                        Inst< SFInt32InstanceCount > _instanceCount   = 0 );
 
    virtual ~IndexedTriangleSet();
 
    // Traverse the scenegraph. See X3DGeometryNode::traverseSG
    // for more info.
    virtual void traverseSG( TraverseInfo &ti );
 
    virtual void render();
 
    virtual int nrTriangles() {
      return index->size() / 3;
    }
 
    virtual bool supportsTangentAttributes() {
      return true;
    }
 
    void setRenderPatches( bool _renderPatches ) {
      render_patches = _renderPatches;
    }
 
    bool getRenderPatches() {
      return render_patches;
    }
 
    virtual void glRender() {
      bool previous_allow = allowingCulling();
      bool prev_draw = draw_debug_options;
      allowCulling( false );
      draw_debug_options = false;
      bool prev_patches = getRenderPatches();
      if( prev_patches ) {
        setRenderPatches( false );
        render();
        setRenderPatches( prev_patches );
      } else
        displayList->callList( false );
      
      draw_debug_options = prev_draw;
      allowCulling( previous_allow );
    }
 
    H3DUniquePtr< AutoNormal > autoNormal;
 
    H3DUniquePtr< AutoTangent > autoTangent;
 
    H3DUniquePtr< MFInt32 > set_index;
 
    H3DUniquePtr< MFInt32 > index;
 
    H3DUniquePtr< SFInt32InstanceCount > instanceCount;
 
    static H3DNodeDatabase database;
  protected:
    bool render_tangents;
 
    bool render_patches;
 
    H3DUniquePtr< Field > vboFieldsUpToDate;
    // The index for the vertex buffer object
    GLuint *vbo_id;
 
  };
}
 
#endif