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Build Ellipsoid from Mesh

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can someone gave me an idea or perhaps code on how to build a bounding ellipsoid from a dx mesh?

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Lock the mesh, retrieving a pointer to the vertices.


for each vertex in vertices
if x < min_x
min_x = x
else if x > max_x
max_x = x

if y < min_y
min_y = y
else if y > max_y
max_y = y

if z < min_z
min_z = z
else if z > max_z
max_z = z

radius_x = (max_x - min_x)/2.0
radius_y = (max_y - min_y)/2.0
radius_z = (max_z - min_z)/2.0

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