blender 2.63.0 python accessing data with bmesh changes

May 1, 2012

David Jones
@david3jones

I’ve just updated my blender to 2.63 and discovered that this uses the new bmesh! Bmesh gives you better control to manipulate your 3d models. For more information take a look at this. Anyway with this big change that means there are more changes to the python api. Which means i have to update my addons again sigh. I’m learning what the new changes are and thought i’d post a little code snippet on how to access some of the usual data through this now. The below code i used just on a simple triangulated cube, it may help point you in the right direction if you are having similar problems as I was.

import bpy
    
obj = bpy.data.objects['Cube']
mesh = obj.data
    
normals = []
indices = []
for face in mesh.polygons:
        indices.append(face.vertices[0])
        indices.append(face.vertices[1])
        indices.append(face.vertices[2])
        for i in range(len(face.vertices)):
            v = mesh.vertices[face.vertices[i]]
            normals.append([v.normal[0],v.normal[1],v.normal[2]])
        
verts = []
for vert in mesh.vertices:
        verts.append(vert.co.xyz)
    
uvs = []
for uv_layer in mesh.uv_layers:
        for x in range(len(uv_layer.data)):
            uvs.append(uv_layer.data[x].uv)
            
print(indices)
print(verts)
print(uvs)
print(normals)

blender 2.63.0 python accessing data with bmesh changes

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