//---------------------------------------------------------
void CWKSP_TIN::_Draw_Triangles(CWKSP_Map_DC &dc_Map)
{
if( m_Parameters("DISPLAY_TRIANGES")->asBool() && dc_Map.IMG_Draw_Begin(m_Parameters("DISPLAY_TRANSPARENCY")->asDouble() / 100.0) )
{
for(int iTriangle=0; iTriangle<asTIN()->Get_Triangle_Count(); iTriangle++)
{
CSG_TIN_Triangle *pTriangle = asTIN()->Get_Triangle(iTriangle);
if( dc_Map.m_rWorld.Intersects(pTriangle->Get_Extent()) != INTERSECTION_None )
{
TPoint p[3];
for(int iNode=0; iNode<3; iNode++)
{
CSG_TIN_Node *pNode = pTriangle->Get_Node(iNode);
TSG_Point_Int Point = dc_Map.World2DC(pNode->Get_Point());
p[iNode].x = Point.x;
p[iNode].y = Point.y;
p[iNode].z = pNode->asDouble(m_fValue);
}
_Draw_Triangle(dc_Map, p);
}
}
dc_Map.IMG_Draw_End();
}
}
//---------------------------------------------------------
bool CSTL_Export::On_Execute(void)
{
bool bBinary;
int zField;
float v[3];
CSG_String File;
CSG_File Stream;
CSG_TIN *pTIN;
pTIN = Parameters("TIN") ->asTIN();
File = Parameters("FILE") ->asString();
zField = Parameters("ZFIELD") ->asInt();
bBinary = Parameters("BINARY") ->asInt() == 1;
if( !Stream.Open(File, SG_FILE_W, bBinary) )
{
return( false );
}
//-----------------------------------------------------
if( bBinary )
{
char *sHeader = (char *)SG_Calloc(80, sizeof(char));
DWORD nFacets = pTIN->Get_Triangle_Count();
WORD nBytes = 0;
Stream.Write(sHeader , sizeof(char), 80);
Stream.Write(&nFacets, sizeof(DWORD));
SG_Free(sHeader);
//-------------------------------------------------
for(int iTriangle=0; iTriangle<pTIN->Get_Triangle_Count(); iTriangle++)
{
CSG_TIN_Triangle *pTriangle = pTIN->Get_Triangle(iTriangle);
Get_Normal(pTriangle, zField, v);
Stream.Write(v, sizeof(float), 3); // facet normal
for(int iNode=0; iNode<3; iNode++)
{
CSG_TIN_Node *pNode = pTriangle->Get_Node(iNode);
v[0] = (float)pNode->Get_X();
v[1] = (float)pNode->Get_Y();
v[2] = (float)pNode->asDouble(zField);
Stream.Write(v, sizeof(float), 3);
}
Stream.Write(&nBytes, sizeof(WORD));
}
}
//-----------------------------------------------------
else // ASCII
{
Stream.Printf(SG_T("solid %s\n"), SG_File_Get_Name(File, false).c_str());
for(int iTriangle=0; iTriangle<pTIN->Get_Triangle_Count(); iTriangle++)
{
CSG_TIN_Triangle *pTriangle = pTIN->Get_Triangle(iTriangle);
Get_Normal(pTriangle, zField, v);
Stream.Printf(SG_T(" facet normal %.4f %.4f %.4f\n"), v[0], v[1], v[2]);
Stream.Printf(SG_T(" outer loop\n"));
for(int iNode=0; iNode<3; iNode++)
{
CSG_TIN_Node *pNode = pTriangle->Get_Node(iNode);
v[0] = (float)pNode->Get_X();
v[1] = (float)pNode->Get_Y();
v[2] = (float)pNode->asDouble(zField);
Stream.Printf(SG_T(" vertex %.4f %.4f %.4f\n"), v[0], v[1], v[2]);
}
Stream.Printf(SG_T(" endloop\n"));
Stream.Printf(SG_T(" endfacet\n"));
}
Stream.Printf(SG_T("endsolid %s\n"), SG_File_Get_Name(File, false).c_str());
}
return( true );
}
