[ADD] some functions to the triangle mesh class

src/graphicsEngine/WTriangleMesh2.cpp

@@ -158,6 +158,12 @@ osg::Vec3 WTriangleMesh2::getVertex( size_t index ) const
     return ( *m_verts )[index];
 }
 
+osg::Vec4 WTriangleMesh2::getVertColor( size_t index ) const
+{
+    WAssert( index < m_countVerts, "get vertex: index out of range" );
+    return ( *m_vertColors )[index];
+}
+
 wmath::WPosition WTriangleMesh2::getVertexAsPosition( size_t index ) const
 {
     WAssert( index < m_countVerts, "get vertex as position: index out of range" );
@@ -362,6 +368,10 @@ void WTriangleMesh2::doLoopSubD()
     }
 
     delete[] newVertexPositions;
+
+    ( *m_vertNormals ).resize( ( *m_verts ).size() );
+    ( *m_vertColors ).resize( ( *m_verts ).size() );
+
     m_meshDirty = true;
 }
 
@@ -538,3 +548,40 @@ size_t WTriangleMesh2::loopGetThirdVert( size_t coVert1, size_t coVert2, size_t
     return getTriVertId2( triangleNum );
 }
 
+void WTriangleMesh2::addMesh( boost::shared_ptr<WTriangleMesh2> mesh, float xOff, float yOff, float zOff )
+{
+    size_t oldVertSize = m_countVerts;
+
+    ( *m_vertColors ).resize( oldVertSize + mesh->vertSize() );
+    for ( size_t i = 0; i < mesh->vertSize(); ++i )
+    {
+        osg::Vec3 v( mesh->getVertex( i ) );
+        v[0] += xOff;
+        v[1] += yOff;
+        v[2] += zOff;
+        addVertex( v );
+        setVertexColor( oldVertSize + i, mesh->getVertColor( i ) );
+    }
+    for ( size_t i = 0; i < mesh->triangleSize(); ++i )
+    {
+        addTriangle( mesh->getTriVertId0( i ) + oldVertSize, mesh->getTriVertId1( i ) + oldVertSize, mesh->getTriVertId2( i ) + oldVertSize );
+    }
+    m_meshDirty = true;
+}
+
+void WTriangleMesh2::translateMesh( float xOff, float yOff, float zOff )
+{
+    osg::Vec3 t( xOff, yOff, zOff );
+    for ( size_t i = 0; i < ( *m_verts ).size(); ++i )
+    {
+        ( *m_verts )[i] += t;
+    }
+}
+
+void WTriangleMesh2::zoomMesh( float zoom )
+{
+    for ( size_t i = 0; i < ( *m_verts ).size(); ++i )
+    {
+        ( *m_verts )[i] *= zoom;
+    }
+}

src/graphicsEngine/WTriangleMesh2.h

@@ -118,6 +118,14 @@ public:
      */
     void addTriangle( osg::Vec3 vert0, osg::Vec3 vert1, osg::Vec3 vert2 );
 
+    /**
+     * sets a vertex to a new position
+     *
+     * \param index
+     * \param vert
+     */
+    void setVertex( size_t index, osg::Vec3 vert );
+
     /**
      * sets the normal for a given vertex
      *
@@ -203,6 +211,14 @@ public:
      */
     osg::Vec3 getVertex( size_t index ) const;
 
+    /**
+     * getter
+     *
+     * \param index
+     * \return color
+     */
+    osg::Vec4 getVertColor( size_t index ) const;
+
     /**
      * getter
      *
@@ -272,6 +288,32 @@ public:
      */
     size_t getTriVertId2( size_t triId ) const;
 
+    /**
+     *  adds a mesh to the existing, no check for duplicate vertexes is performed, an additional
+     *  vector may be specified to move the mesh to add
+     *
+     *  \param mesh
+     *  \param xOff
+     *  \param yOff
+     *  \param zOff
+     */
+    void addMesh( boost::shared_ptr<WTriangleMesh2> mesh, float xOff = 0., float yOff = 0., float zOff = 0. );
+
+    /**
+     *  moves the entire mesh to a new postion
+     *
+     *  \param xOff
+     *  \param yOff
+     *  \param zOff
+     */
+    void translateMesh( float xOff, float yOff, float zOff );
+
+    /**
+     * multiplies the vertex vectors of the mesh with a given number
+     *
+     * \param zoom
+     */
+    void zoomMesh( float zoom );
 
 protected:
     static boost::shared_ptr< WPrototyped > m_prototype; //!< The prototype as singleton.
@@ -548,5 +590,9 @@ inline size_t WTriangleMesh2::getTriVertId2( size_t triId ) const
     return m_triangles[triId * 3 + 2];
 }
 
+inline void WTriangleMesh2::setVertex( size_t index, osg::Vec3 vert )
+{
+    ( *m_verts )[index] = vert;
+}
 
 #endif  // WTRIANGLEMESH2_H