WriteGraphicalData.cpp File Reference

Functions
void	WriteDtk_Mesh (const Dtk_MeshPtr &inMeshToWrite)
Dtk_ErrorStatus	WriteGraphicalData (Dtk_GraphicalDataPtr inData, const Dtk_transfo &inMatrix)

Function Documentation

WriteDtk_Mesh()

void WriteDtk_Mesh

(

const Dtk_MeshPtr &

inMeshToWrite

)

{
    // convert triangles-strip, fans, polygons into simple triangles
    inMeshToWrite->explode();
 
    // Used to write a PDF File 
    if (IsPdfDumpActivated())
    {
           PdfWriteEntity(Dtk_EntityPtr::DtkDynamicCast(inMeshToWrite));
    }
 
     // Used to write an XML File 
     if (IsXmlDumpActivated())
     {
          XmlWriteMesh(inMeshToWrite);
     }
 
    Dtk_RGB rgb = inMeshToWrite->get_mesh_color();   // mesh global color.
 
    // vertices :
    Dtk_Size_t nbvertices = inMeshToWrite->get_nb_vertices();
    Dtk_Size_t i, j;
    for (i = 0; i < nbvertices; i++)
    {
        Dtk_pnt pnt;
        Dtk_dir dir;
        Dtk_RGB color;
        float u, v;
        u = v = 0.0;
        inMeshToWrite->get_vertex(i, &pnt);  //  coordinates of the vertices
        if (inMeshToWrite->has_normals())
            inMeshToWrite->get_normal(i, &dir);  // vertex normal (if enabled)
        if (inMeshToWrite->has_colors())
            inMeshToWrite->get_color(i, &color);  // vertex color (if enabled)
        if (inMeshToWrite->has_texcoords())
        {
            u = inMeshToWrite->GetUTexture(i);  // vertex u,v texture coordinate (if enabled)
            v = inMeshToWrite->GetVTexture(i);
        }
    }
    // mesh_faces
    Dtk_Size_t k, m, nbmeshfaces = inMeshToWrite->get_nb_mesh_face();
    for (i = 0; i < nbmeshfaces; i++)
    {
        Dtk_mesh_face* mf = inMeshToWrite->get_mesh_face(i);
        Dtk_Size_t nbtriangles = mf->get_nbtriangles();
        Dtk_Int32 trianglesindices[3];
        for (j = 0; j < nbtriangles; j++)
        {
            const Dtk_UInt32* tri = mf->get_triangle_indices(j);
            trianglesindices[0] = tri[0];
            trianglesindices[1] = tri[1];
            trianglesindices[2] = tri[2];
            // id of vertex in vertices table you read in the first step of this function
        }
 
        //face boundaries
        Dtk_Size_t nbpolyline = mf->get_nbpolylines();
        for (j = 0; j < nbpolyline; j++)
        {
            const Dtk_tab<Dtk_UInt32> *pnt;
            pnt = mf->get_polyline_indices(j);
            Dtk_Size_t nbvertex = pnt->size();
            for (k = 0; k < nbvertex; k++)
            {
                m = (*pnt)[k];  // id of vertex in vertices table
                Dtk_pnt pt = inMeshToWrite->get_vertex(m);
            }
        }
    }
}

WriteGraphicalData()

Dtk_ErrorStatus WriteGraphicalData	(	Dtk_GraphicalDataPtr	inData,
		const Dtk_transfo &	inMatrix
	)

{
     if( inData.IsNULL() )
          return dtkErrorNullPointer;
 
     Dtk_Size_t nbt = 0;
     Dtk_Size_t i, nb = inData->GetNumMeshes();
     for( i = 0; i < nb; i++ )
     {
          Dtk_MeshPtr me = inData->GetMesh( i );
          me->Transform( inMatrix );
          WriteDtk_Mesh( me );
     }
     nbt = nb;
     nb = inData->GetNumDrawings();
     nbt += nb;
     for (i = 0; i < nb; i++)
     {
          Dtk_DrawingPtr TmpDrawing = inData->GetDrawing(i);
          TmpDrawing->Transform(inMatrix);
          if (TmpDrawing.IsNotNULL())
          {
               // Used to write a PDF File 
               if (IsPdfDumpActivated())
               {
                    // Write the drawing to a PDF file is not supported
               }
               // Used to write an XML File 
               if (IsXmlDumpActivated())
               {
                    XmlWriteDrawing(TmpDrawing);
               }
          }
     }
     if( nbt == 0 )
          return dtkWarningNoEntitiesWritten;
     else
          return dtkNoError;
 
}