def Frame(self, nps):
# Get a list of bounding spheres for each NodePath in world space.
allBnds = []
allCntr = pm.Vec3()
for np in nps:
bnds = np.getBounds()
if bnds.isInfinite():
continue
mat = np.getParent().getMat(self.rootNp)
bnds.xform(mat)
allBnds.append(bnds)
allCntr += bnds.getCenter()
# Now create a bounding sphere at the center point of all the
# NodePaths and extend it to encapsulate each one.
bnds = pm.BoundingSphere(pm.Point3(allCntr / len(nps)), 0)
for bnd in allBnds:
bnds.extendBy(bnd)
# Move the camera and the target the the bounding sphere's center.
self.target.setPos(bnds.getCenter())
self.setPos(bnds.getCenter())
# Now move the camera back so the view accomodates all NodePaths.
# Default the bounding radius to something reasonable if the object
# has no size.
fov = self.GetLens().getFov()
radius = bnds.getRadius() or 0.5
dist = radius / math.tan(math.radians(min(fov[0], fov[1]) * 0.5))
self.setY(self, -dist)
