How To Create Bounding Box For Selected Objects

[yunjun]

I'd like to ask a quick question regarding creating bounding box. the documentation shows there are 3 ways:

MBoundingBox ();
MBoundingBox ( const MBoundingBox & src );
MBoundingBox ( const MPoint &corner1, const MPoint &corner2 );

All of them seems useless to me, because I want a bounding box for my selected objects, not an empty one, or a copy of another bounding box, or from 2 corner points.

Thanks!

[rob-bateman]

MBoundingBox::expand();

[yunjun]

Hey Rob Bateman,

the 'expand' member only has the following two options:

void expand ( const MPoint & point )
void expand ( const MBoundingBox & box )

it seems neither of them applies on an object?

[visualfx]

QUOTE(yl2000 @ 07/31/07, 03:35 AM) [snapback]270707[/snapback]
it seems neither of them applies on an object?

Create an MFnDagNode from your object and use the MFnDagNode::boundingBox() method to return an MBoundingBox to use with MBoundingBox::expand( const MBoundingBox & box ).

[yunjun]

thanks, visualfx.
I see what you are saying. most of the MBoundingBox class members are used to return the information of an already existing bounding box, while to create the MBoundingBox itself we should use the member functions of other classes like the MFnDagNode as you mentioned, or MFnMesh, MFnSubd, etc.