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Questions pertaining to creating, generating or editing an objects geometry. Object geometry is defined by editing and creating the location and rotation of vertices, edges, and faces.

4 votes
Accepted

How is the normal direction determined when I use "Make Edge/Face"?

If you create faces connecting to existing faces, they will be used to calculate the direction. Otherwise the direction is undefined at the moment. If you have a file that you think is making faces p …
ideasman42's user avatar
5 votes
1 answer
2k views

How to get the final volume & area of all selected objects (ignoring some faces)?

The 3D print toolbox currently only outputs the volume/area of all faces. How can I get the volume of selected mesh objects, ignoring certain faces? Asking on behalf of a user who mailed me.
ideasman42's user avatar
7 votes

How to get the final volume & area of all selected objects (ignoring some faces)?

This can be done using the Python API to get the mesh with modifiers applied, then applying the transform matrix. The following script applies to all selected objects, showing a popup with the final v …
ideasman42's user avatar
2 votes

How do I fix this triangulation issue?

If you don't want vertex normals to blend you can use sharp edges or enable auto-smooth in the mesh normals panel (which works in the view-port with version 2.71).
ideasman42's user avatar
4 votes
Accepted

Get center of geometry for a group of objects, then point camera to that coordinate

This is possible, but you will have to calculate the center. The example below uses a rough approximation based on the volume of the objects bounding boxes. from bpy import context from mathutils im …
ideasman42's user avatar
20 votes
Accepted

how to use BMesh to add verts, faces, and edges to existing geometry

The issue with this script is when you exit editmode, the editmesh you were editing becomes invalid (thats good, but not what you want). So instead, just exit editmode and blender will handle convert …
ideasman42's user avatar