Bounding box not updating

Hi get the bounding box of a shape by:

BoundingBox ret;
Bnd_Box box;
BRepBndLib::Add(myShape, box);
box.Get(ret.minX, ret.minY, ret.minZ, ret.maxX, ret.maxY, ret.maxZ);
return ret;

Which works, but as soon as i move the shape

gp_Vec vec(moveX, moveY, moveZ);
gp_Trsf transform;
gp_Trsf myTrsfX = myShape.Location().Transformation();
myTrsfX *= transform;
BRepBuilderAPI_Transform moveTransform(myShape, transform);
myShape = moveTransform.Shape();


When i then call the bounding box function again, i get the same bounding box coordinates, while the representation seems to actually be on the correct position.

Any ideas?

Daniel Neander's picture


Have you confirmed that the transformation you are applying is actually working?

gp_Pnt shapeTranslation = myShape->Transformation().TranslationPart();

Heiko Irrgang's picture

Sorry, code example actually works, i accidently (because of a lot of try an error attempts) was calculating a shapes bounding box by combining the bounding boxes of the shapes sub-edges, which seem to get not the correct result. If i actually calculate the bounding box of the shape, like above, it seems to work.