void ShapeBezierSurface::computeBBox(SoAction*, SbBox3f& box, SbVec3f& /*center*/ )
{
box.makeEmpty();
for (int i = 0; i < m_surfacesVector.size(); i++)
{
BBox pBox = m_surfacesVector[i]->GetComputeBBox();
SbVec3f pMin( pBox.pMin[0], pBox.pMin[1], pBox.pMin[2] );
box.extendBy( pMin );
SbVec3f pMax( pBox.pMax[0], pBox.pMax[1], pBox.pMax[2] );
box.extendBy( pMax );
}
}
void SoWidgetShape::computeBBox(SoAction *action, SbBox3f &box, SbVec3f ¢er)
{
// ignore if node is empty
if (this->image.isNull()) return;
SbVec3f v0, v1, v2, v3;
// this will cause a cache dependency on the view volume,
// model matrix and viewport.
this->getQuad(action->getState(), v0, v1, v2, v3);
box.makeEmpty();
box.extendBy(v0);
box.extendBy(v1);
box.extendBy(v2);
box.extendBy(v3);
center = box.getCenter();
}