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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoIndexedFaceSet node class.
|
| Author(s) : Paul S. Strauss, Gavin Bell
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_INDEXED_FACE_SET_
#define _SO_INDEXED_FACE_SET_
#include <Inventor/nodes/SoIndexedShape.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoIndexedFaceSet
//
// Indexed set of faces. Each face consists of 3 or more vertices,
// each of which is denoted by an integer index (from the coordIndex
// field) into the current coordinates. Depending on the current
// material and normal binding values, the materials and normals for
// the faces or vertices may be accessed in order or indexed. If they
// are indexed, the materialIndex and normalIndex fields are used.
//
//////////////////////////////////////////////////////////////////////////////
// This coordinate index indicates that the current face ends and the
// next face begins
#define SO_END_FACE_INDEX (-1)
class SoNormalBundle;
class SoCoordinateElement;
class SoShapeStyleElement;
// C-api: prefix=SoIndFSet
// C-api: public=coordIndex, materialIndex, normalIndex, textureCoordIndex, vertexProperty
class SoIndexedFaceSet : public SoIndexedShape {
SO_NODE_HEADER(SoIndexedFaceSet);
public:
// Inherits fields
// Constructor
SoIndexedFaceSet();
SoEXTENDER public:
// Implements actions
virtual void GLRender(SoGLRenderAction *action);
// Generates default normals using the given normal bundle.
// Returns TRUE.
virtual SbBool generateDefaultNormals(SoState *state,
SoNormalBundle *nb);
// Typedef of pointer to method on IndexedFaceSet;
// This will be used to simplify declaration and initialization.
typedef void (SoIndexedFaceSet::*PMFS)(SoGLRenderAction *);
SoINTERNAL public:
static void initClass();
// This enum is used to indicate the current material or normal binding
enum Binding {
OVERALL, PER_FACE, PER_FACE_INDEXED, PER_VERTEX,
PER_VERTEX_INDEXED
};
protected:
// Generates triangles representing faces
virtual void generatePrimitives(SoAction *action);
// Overrides standard method to create an SoFaceDetail instance
virtual SoDetail * createTriangleDetail(SoRayPickAction *action,
const SoPrimitiveVertex *v1,
const SoPrimitiveVertex *v2,
const SoPrimitiveVertex *v3,
SoPickedPoint *pp);
~SoIndexedFaceSet();
private:
// Saves normal binding when generating primitives for picking
Binding savedNormalBinding;
// Returns current material or normal binding from action's state
Binding getMaterialBinding(SoAction *action);
Binding getNormalBinding(SoAction *action,
SoNormalBundle *nb);
// Figures out normals, if necessary. Returns TRUE if normals were
// generated
SbBool figureNormals(SoState *state, SoNormalBundle *nb);
// set numTris/Quads/Faces to -1 when notified
virtual void notify(SoNotList *list);
// Set number of triangles/quads/faces, based on coordIndex array.
void setupNumTrisQuadsFaces();
// Number of triangles, quads, (n>4)-vertex faces
int numTris, numQuads, numFaces;
// 18*3ferent render functions; names are formed like this:
// Om -- overall material
// Fm -- per face material Vm -- per vertex material
// On -- overall normal
// Fn -- per face normal Vm -- per vertex normal
// T -- per vertex texture coordinates
void TriOmOn(SoGLRenderAction *); void TriOmOnT(SoGLRenderAction *);
void TriOmFn(SoGLRenderAction *); void TriOmFnT(SoGLRenderAction *);
void TriOmVn(SoGLRenderAction *); void TriOmVnT(SoGLRenderAction *);
void TriFmOn(SoGLRenderAction *); void TriFmOnT(SoGLRenderAction *);
void TriFmFn(SoGLRenderAction *); void TriFmFnT(SoGLRenderAction *);
void TriFmVn(SoGLRenderAction *); void TriFmVnT(SoGLRenderAction *);
void TriVmOn(SoGLRenderAction *); void TriVmOnT(SoGLRenderAction *);
void TriVmFn(SoGLRenderAction *); void TriVmFnT(SoGLRenderAction *);
void TriVmVn(SoGLRenderAction *); void TriVmVnT(SoGLRenderAction *);
void QuadOmOn(SoGLRenderAction *); void QuadOmOnT(SoGLRenderAction *);
void QuadOmFn(SoGLRenderAction *); void QuadOmFnT(SoGLRenderAction *);
void QuadOmVn(SoGLRenderAction *); void QuadOmVnT(SoGLRenderAction *);
void QuadFmOn(SoGLRenderAction *); void QuadFmOnT(SoGLRenderAction *);
void QuadFmFn(SoGLRenderAction *); void QuadFmFnT(SoGLRenderAction *);
void QuadFmVn(SoGLRenderAction *); void QuadFmVnT(SoGLRenderAction *);
void QuadVmOn(SoGLRenderAction *); void QuadVmOnT(SoGLRenderAction *);
void QuadVmFn(SoGLRenderAction *); void QuadVmFnT(SoGLRenderAction *);
void QuadVmVn(SoGLRenderAction *); void QuadVmVnT(SoGLRenderAction *);
void GenOmOn(SoGLRenderAction *); void GenOmOnT(SoGLRenderAction *);
void GenOmFn(SoGLRenderAction *); void GenOmFnT(SoGLRenderAction *);
void GenOmVn(SoGLRenderAction *); void GenOmVnT(SoGLRenderAction *);
void GenFmOn(SoGLRenderAction *); void GenFmOnT(SoGLRenderAction *);
void GenFmFn(SoGLRenderAction *); void GenFmFnT(SoGLRenderAction *);
void GenFmVn(SoGLRenderAction *); void GenFmVnT(SoGLRenderAction *);
void GenVmOn(SoGLRenderAction *); void GenVmOnT(SoGLRenderAction *);
void GenVmFn(SoGLRenderAction *); void GenVmFnT(SoGLRenderAction *);
void GenVmVn(SoGLRenderAction *); void GenVmVnT(SoGLRenderAction *);
// Array of function pointers to render functions:
static PMFS TriRenderFunc[32];
static PMFS QuadRenderFunc[32];
static PMFS GenRenderFunc[32];
};
#endif /* _SO_INDEXED_FACE_SET_ */
|
