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pankaj bansal 03-26-2013 03:33 AM

Access the vertices of a model
 
Hey

I have a problem. I need to calculate the convex hull of an 3D model loaded in vizard. I have the code to do that but for that I need all the vertices of the model ie. their coordinates in a array. I need to access all the vertices of the object but I am not able to find any method to do that. Can you please tell me how can I access all the vertices of the model.
PS. the model is a complex model and is not a on-the-fly object. Its a .ive or 3ds max file. so plz tell me how can I access the vertices.

Regards
Pankaj Bansal

farshizzo 03-29-2013 07:02 PM

There is currently no built-in way to access the vertices, but you can save the model to the STL format, which is a simple text format that contains all the vertices. Here is some sample code allows you to iterate over the vertices:
Code:

import viz
viz.go()

model = viz.add('logo.ive')

def getVertices(node):
        """Iterate over vertices"""
        node.save('temp.stl')
        vertices = []
        with open('temp.stl','r') as f:
                for line in f:
                        s = line.split()
                        if s and s[0] == 'vertex':
                                yield float(s[1]), float(s[2]), -float(s[3])

verts = list(getVertices(model))



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