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# SoShape.h

    00001 #ifndef COIN_SOSHAPE_H
    00002 #define COIN_SOSHAPE_H
    00003
    00004 /**************************************************************************\
    00005  *
    00006  *  This file is part of the Coin 3D visualization library.
    00007  *  Copyright (C) 1998-2003 by Systems in Motion.  All rights reserved.
    00008  *
    00009  *  This library is free software; you can redistribute it and/or
    00010  *  modify it under the terms of the GNU General Public License
    00011  *  ("GPL") version 2 as published by the Free Software Foundation.
    00012  *  See the file LICENSE.GPL at the root directory of this source
    00013  *  distribution for additional information about the GNU GPL.
    00014  *
    00015  *  For using Coin with software that can not be combined with the GNU
    00016  *  GPL, and for taking advantage of the additional benefits of our
    00017  *  support services, please contact Systems in Motion about acquiring
    00018  *  a Coin Professional Edition License.
    00019  *
    00020  *  See <URL:http://www.coin3d.org> for  more information.
    00021  *
    00022  *  Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
    00023  *  <URL:http://www.sim.no>.
    00024  *
    00025 \**************************************************************************/
    00026
    00027 #include <Inventor/nodes/SoSubNode.h>
    00028 #include <Inventor/SbMatrix.h>
    00029 #include <Inventor/SbVec2s.h>
    00030 #include <Inventor/SbBox3f.h>
    00031
    00032 class SoPrimitiveVertex;
    00033 class SoDetail;
    00034 class SoPickedPoint;
    00035 class SoFaceDetail;
    00036 class SoState;
    00037 class SoTextureCoordinateElement;
    00038 class SbVec2f;
    00039 class SoMaterialBundle;
    00040 class SoBoundingBoxCache;
    00041
    00042 class COIN_DLL_API SoShape : public SoNode {
    00043   typedef SoNode inherited;
    00044
    00045   SO_NODE_ABSTRACT_HEADER(SoShape);
    00046
    00047 public:
    00048   static void initClass(void);
    00049
    00050   enum TriangleShape {
    00051     TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON,
    00052     // The rest of the enums are not part of the original Inventor API.
    00053     QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP
    00054   };
    00055
    00056   virtual SbBool affectsState(void) const;
    00057   virtual void notify(SoNotList * nl);
    00058
    00059   virtual void getBoundingBox(SoGetBoundingBoxAction * action);
    00060   virtual void GLRender(SoGLRenderAction * action);
    00061   virtual void rayPick(SoRayPickAction * action);
    00062   virtual void callback(SoCallbackAction * action);
    00063   virtual void computeBBox(SoAction * action, SbBox3f & box,
    00064                            SbVec3f & center) =  0;
    00065   virtual void getPrimitiveCount(SoGetPrimitiveCountAction * action);
    00066
    00067   static void getScreenSize(SoState * const state, const SbBox3f & boundingbox,
    00068                             SbVec2s & rectsize);
    00069   static float getDecimatedComplexity(SoState * state, float complexity);
    00070   const SoBoundingBoxCache * getBoundingBoxCache(void) const;
    00071
    00072 protected:
    00073   SoShape(void);
    00074   virtual ~SoShape();
    00075
    00076   float getComplexityValue(SoAction * action);
    00077   virtual void generatePrimitives(SoAction * action) =  0;
    00078   virtual SbBool shouldGLRender(SoGLRenderAction * action);
    00079   void beginSolidShape(SoGLRenderAction * action);
    00080   void endSolidShape(SoGLRenderAction * action);
    00081   void GLRenderBoundingBox(SoGLRenderAction * action);
    00082   SbBool shouldPrimitiveCount(SoGetPrimitiveCountAction * action);
    00083
    00084   SbBool shouldRayPick(SoRayPickAction * const action);
    00085   void computeObjectSpaceRay(SoRayPickAction * const action);
    00086   void computeObjectSpaceRay(SoRayPickAction * const action,
    00087                              const SbMatrix & matrix);
    00088   virtual SoDetail * createTriangleDetail(SoRayPickAction * action,
    00089                                           const SoPrimitiveVertex * v1,
    00090                                           const SoPrimitiveVertex * v2,
    00091                                           const SoPrimitiveVertex * v3,
    00092                                           SoPickedPoint * pp);
    00093   virtual SoDetail * createLineSegmentDetail(SoRayPickAction * action,
    00094                                              const SoPrimitiveVertex * v1,
    00095                                              const SoPrimitiveVertex * v2,
    00096                                              SoPickedPoint * pp);
    00097   virtual SoDetail * createPointDetail(SoRayPickAction * action,
    00098                                        const SoPrimitiveVertex * v,
    00099                                        SoPickedPoint * pp);
    00100
    00101   void invokeTriangleCallbacks(SoAction * const action,
    00102                                const SoPrimitiveVertex * const v1,
    00103                                const SoPrimitiveVertex * const v2,
    00104                                const SoPrimitiveVertex * const v3);
    00105   void invokeLineSegmentCallbacks(SoAction * const action,
    00106                                   const SoPrimitiveVertex * const v1,
    00107                                   const SoPrimitiveVertex * const v2);
    00108   void invokePointCallbacks(SoAction * const action,
    00109                             const SoPrimitiveVertex * const v);
    00110   void beginShape(SoAction * const action, const TriangleShape shapetype,
    00111                   SoDetail * const detail = NULL);
    00112   void shapeVertex(const SoPrimitiveVertex * const v);
    00113   void endShape(void);
    00114
    00115   void generateVertex(SoPrimitiveVertex * const pv,
    00116                       const SbVec3f & point,
    00117                       const SbBool useTexFunc,
    00118                       const SoTextureCoordinateElement * const tce,
    00119                       const float s,
    00120                       const float t,
    00121                       const SbVec3f & normal);
    00122   void generateVertex(SoPrimitiveVertex * const pv,
    00123                       const SbVec3f & point,
    00124                       const SbBool useTexFunc,
    00125                       const SoTextureCoordinateElement * const tce,
    00126                       const float s,
    00127                       const float t,
    00128                       const float r,
    00129                       const SbVec3f & normal);
    00130
    00131 private:
    00132   class SoShapeP * pimpl;
    00133
    00134   void getBBox(SoAction * action, SbBox3f & box, SbVec3f & center);
    00135   void rayPickBoundingBox(SoRayPickAction * action);
    00136   friend class soshape_primdata;           // internal class
    00137   friend class so_generate_prim_private;   // a very private class
    00138 };
    00139
    00140 #endif // !COIN_SOSHAPE_H