Source/System/NodeCores/Drawables/Geometry/Base/OSGGeoBuilder.h

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  37 \*---------------------------------------------------------------------------*/
  38
  39 #ifndef _OSGGEOBUILDER_H_
  40 #define _OSGGEOBUILDER_H_
  41 #ifdef __sgi
  42 #pragma once
  43 #endif
  44
  45 #include "OSGGeoProperties.h"
  46 #include "OSGGeometry.h"
  47
  48 OSG_BEGIN_NAMESPACE
  49
  50 /*! \brief A helper class to simplify building geometry.
  51     \ingroup GrpDrawablesGeometryUtils
  52     \nohierarchy
  53  */
  54
  55 class OSG_DRAWABLE_DLLMAPPING GeoBuilder
  56 {
  57     /*==========================  PUBLIC  =================================*/
  58   public:
  59     /*---------------------------------------------------------------------*/
  60     /*! \name                Con/Destructors                               */
  61     /*! \{                                                                 */
  62
  63     GeoBuilder(void);
  64
  65     ~GeoBuilder();
  66
  67     void reset(void);
  68
  69     /*! \}                                                                 */
  70     /*---------------------------------------------------------------------*/
  71     /*! \name               Property Access                               */
  72     /*! \{                                                                 */
  73
  74     template <class Type>
  75     UInt32 vertex(Type data)
  76     {
  77         getProperty(Geometry::PositionsIndex)->addValue(data);
  78
  79         return finishVertex();
  80     }
  81
  82     template <class Type>
  83     void normal(Type data)
  84     {
  85         getProperty(Geometry::NormalsIndex)->addValue(data);
  86     }
  87
  88     template <class Type>
  89     void color(Type data)
  90     {
  91         getProperty(Geometry::ColorsIndex)->addValue(data);
  92     }
  93
  94     template <class Type>
  95     void texcoord(UInt16 unit, Type data)
  96     {
  97         getProperty(Geometry::TexCoordsIndex + unit)->addValue(data);
  98     }
  99
 100     template <class Type>
 101     UInt32 prop(UInt16 propIndex, Type data)
 102     {
 103         getProperty(propIndex)->addValue(data);
 104
 105         if(propIndex == 0)
 106             return finishVertex();
 107         else
 108             return 0;
 109     }
 110
 111     template <class VType, class NType>
 112     UInt32 fullVertex(VType vert, NType norm)
 113     {
 114         normal(norm);
 115         return vertex(vert);
 116     }
 117
 118     template <class VType, class NType, class CType>
 119     UInt32 fullVertex(VType vert, NType norm, CType col)
 120     {
 121         color(col);
 122         normal(norm);
 123         return vertex(vert);
 124     }
 125
 126     template <class VType, class NType, class CType, class TType>
 127     UInt32 fullVertex(VType vert, NType norm, CType col, TType tc)
 128     {
 129         color(col);
 130         normal(norm);
 131         texcoord(0, tc);
 132         return vertex(vert);
 133     }
 134
 135     /*! \}                                                                 */
 136     /*---------------------------------------------------------------------*/
 137     /*! \name                  Face Creation                               */
 138     /*! \{                                                                 */
 139
 140     void begin(UInt32 type);
 141
 142     void index(UInt32 newIndex);
 143
 144     void end(void);
 145
 146     void line(UInt32 start        );
 147     void line(UInt32 i1, UInt32 i2);
 148
 149     void tri(UInt32 start                   );
 150     void tri(UInt32 i1, UInt32 i2, UInt32 i3);
 151
 152     void quad(UInt32 start                              );
 153     void quad(UInt32 i1, UInt32 i2, UInt32 i3, UInt32 i4);
 154
 155     /*! \}                                                                 */
 156     /*---------------------------------------------------------------------*/
 157     /*! \name                  Object Access                               */
 158     /*! \{                                                                 */
 159
 160     Geometry *getGeometry(void);
 161
 162     /*! \}                                                                 */
 163     /*=========================  PROTECTED  ===============================*/
 164   protected:
 165     /*---------------------------------------------------------------------*/
 166     /*! \name               Property Helper                               */
 167     /*! \{                                                                 */
 168
 169     GeoVectorProperty *getProperty(UInt32 index);
 170
 171     UInt32 finishVertex(void);
 172
 173     void addType(Int32 type);
 174     void addLength(UInt32 length);
 175
 176     /*! \}                                                                 */
 177     /*==========================  PRIVATE  ================================*/
 178   private:
 179
 180     GeometryUnrecPtr _geo;
 181
 182     UInt32 _actLen;
 183      Int32 _actType;
 184
 185     static const char* _defaultPropTypes[Geometry::MaxAttribs];
 186 };
 187
 188 OSG_END_NAMESPACE
 189
 190 #include "OSGGeoBuilder.inl"
 191
 192 #endif /* _OSGGEOBUILDER_H_ */