bool S3D::ReadVector( std::istream& aFile, SGVECTOR& aVector )
{
double x, y, z;
aFile.read( (char*)&x, sizeof(double) );
aFile.read( (char*)&y, sizeof(double) );
aFile.read( (char*)&z, sizeof(double) );
aVector.SetVector( x, y, z );
if( aFile.fail() )
return false;
return true;
}
static SCENEGRAPH* vrmlToSG( VRML_LAYER& vpcb, int idxColor, SGNODE* aParent, double top, double bottom )
{
vpcb.Tesselate( NULL );
std::vector< double > vertices;
std::vector< int > idxPlane;
std::vector< int > idxSide;
if( top < bottom )
{
double tmp = top;
top = bottom;
bottom = tmp;
}
if( !vpcb.Get3DTriangles( vertices, idxPlane, idxSide, top, bottom ) )
{
#ifdef DEBUG
do {
std::ostringstream ostr;
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [INFO] no vertex data";
wxLogTrace( MASK_IDF, "%s\n", ostr.str().c_str() );
} while( 0 );
#endif
return NULL;
}
if( ( idxPlane.size() % 3 ) || ( idxSide.size() % 3 ) )
{
#ifdef DEBUG
do {
std::ostringstream ostr;
std::cerr << __FILE__ << ": " << __FUNCTION__ << ": " << __LINE__ << "\n";
std::cerr << " * [BUG] index lists are not a multiple of 3 (not a triangle list)";
wxLogTrace( MASK_IDF, "%s\n", ostr.str().c_str() );
} while( 0 );
#endif
return NULL;
}
std::vector< SGPOINT > vlist;
size_t nvert = vertices.size() / 3;
size_t j = 0;
for( size_t i = 0; i < nvert; ++i, j+= 3 )
vlist.push_back( SGPOINT( vertices[j], vertices[j+1], vertices[j+2] ) );
// create the intermediate scenegraph
IFSG_TRANSFORM* tx0 = new IFSG_TRANSFORM( aParent ); // tx0 = Transform for this outline
IFSG_SHAPE* shape = new IFSG_SHAPE( *tx0 ); // shape will hold (a) all vertices and (b) a local list of normals
IFSG_FACESET* face = new IFSG_FACESET( *shape ); // this face shall represent the top and bottom planes
IFSG_COORDS* cp = new IFSG_COORDS( *face ); // coordinates for all faces
cp->SetCoordsList( nvert, &vlist[0] );
IFSG_COORDINDEX* coordIdx = new IFSG_COORDINDEX( *face ); // coordinate indices for top and bottom planes only
coordIdx->SetIndices( idxPlane.size(), &idxPlane[0] );
IFSG_NORMALS* norms = new IFSG_NORMALS( *face ); // normals for the top and bottom planes
// number of TOP (and bottom) vertices
j = nvert / 2;
// set the TOP normals
for( size_t i = 0; i < j; ++i )
norms->AddNormal( 0.0, 0.0, 1.0 );
// set the BOTTOM normals
for( size_t i = 0; i < j; ++i )
norms->AddNormal( 0.0, 0.0, -1.0 );
// assign a color from the palette
SGNODE* modelColor = getColor( *shape, idxColor );
// create a second shape describing the vertical walls of the IDF extrusion
// using per-vertex-per-face-normals
shape->NewNode( *tx0 );
shape->AddRefNode( modelColor ); // set the color to be the same as the top/bottom
face->NewNode( *shape );
cp->NewNode( *face ); // new vertex list
norms->NewNode( *face ); // new normals list
coordIdx->NewNode( *face ); // new index list
// populate the new per-face vertex list and its indices and normals
std::vector< int >::iterator sI = idxSide.begin();
std::vector< int >::iterator eI = idxSide.end();
size_t sidx = 0; // index to the new coord set
SGPOINT p1, p2, p3;
SGVECTOR vnorm;
while( sI != eI )
{
p1 = vlist[*sI];
cp->AddCoord( p1 );
++sI;
p2 = vlist[*sI];
cp->AddCoord( p2 );
++sI;
p3 = vlist[*sI];
cp->AddCoord( p3 );
++sI;
vnorm.SetVector( S3D::CalcTriNorm( p1, p2, p3 ) );
norms->AddNormal( vnorm );
norms->AddNormal( vnorm );
norms->AddNormal( vnorm );
coordIdx->AddIndex( (int)sidx );
++sidx;
coordIdx->AddIndex( (int)sidx );
++sidx;
coordIdx->AddIndex( (int)sidx );
++sidx;
}
SCENEGRAPH* data = (SCENEGRAPH*)tx0->GetRawPtr();
// delete the API wrappers
delete shape;
delete face;
delete coordIdx;
delete cp;
delete tx0;
return data;
}