void Patch::addTri( const QVector3D &a, const QVector3D &b, const QVector3D &c,
const QVector3D &n )
{
QVector3D norm = n.isNull() ? QVector3D::normal( a, b, c ) : n;
if (sm == Smooth) {
geom->appendSmooth( a, norm, initv );
geom->appendSmooth( b, norm, initv );
geom->appendSmooth( c, norm, initv );
} else {
geom->appendFaceted( a, norm );
geom->appendFaceted( b, norm );
geom->appendFaceted( c, norm );
}
count += 3;
}
void Patch::addQuad(const QVector3D &a, const QVector3D &b, const QVector3D &c, const QVector3D &d)
{
QVector3D norm = QVector3D::normal(a, b, c);
if (sm == Smooth) {
addTri(a, b, c, norm);
addTri(a, c, d, norm);
} else {
// If faceted share the two common vertices
addTri(a, b, c, norm);
int k = geom->vertices.count();
geom->appendSmooth(a, norm, k);
geom->appendSmooth(c, norm, k);
geom->appendFaceted(d, norm);
count += 3;
}
}