I need to create test file for my program. But it only accepts polygons with 3 vertices - triangles as input. How can I convert all polygons of some object into triangles?
I know how to select all faces, but how to split them into triangles.
$\begingroup$ $\endgroup$
1 
- $\begingroup$ more answers to the same question here: blender.stackexchange.com/questions/30846/… $\endgroup$user1853– user18532015-05-14 17:18:44 +00:00Commented May 14, 2015 at 17:18
Add a comment |
2 Answers
$\begingroup$ 
$\endgroup$
4 You can select all the faces and go to Face > Triangulate Faces in the 3D View header (or just press Ctrl+T for the same effect) while in Edit Mode.
As ideasman42 pointed out in the comments, Face > Poke Faces will also triangulate the mesh by adding a vertex in the center of each face and fan-filling around the vertex, it may give preferred results for certain cases, for example, cylinder caps.
You could also add a 'Triangulate' modifier to the object and apply it:
Visualisation of the two methods:
- 4$\begingroup$ One other method,
Mesh -> Faces -> Poke Faces, maybe worth adding to answer. $\endgroup$ideasman42– ideasman422014-11-26 15:40:28 +00:00Commented Nov 26, 2014 at 15:40 - $\begingroup$ @ideasman42 How does Poke Faces actually differ from triangulation? What else does it do? $\endgroup$nanofarad– nanofarad2014-11-26 23:50:01 +00:00Commented Nov 26, 2014 at 23:50
- $\begingroup$ edited answer explaining what poke-faces does, $\endgroup$ideasman42– ideasman422014-11-27 00:04:29 +00:00Commented Nov 27, 2014 at 0:04
- $\begingroup$ Another method would be:
Mesh -> Clean up -> Split Non-Planar Faces, then set Max angle to0. $\endgroup$Leon Cheung– Leon Cheung2014-11-27 14:22:11 +00:00Commented Nov 27, 2014 at 14:22
$\begingroup$ $\endgroup$
1 There is also an easy way to do it through Blender's Python API:
bpy.ops.mesh.quads_convert_to_tris(quad_method='FIXED', ngon_method='BEAUTY') #if you want a faster way or
bpy.ops.mesh.quads_convert_to_tris(quad_method='BEAUTY', ngon_method='BEAUTY') #If you want nicer cuts - 1$\begingroup$ Is there a way to do this without
bpy.opsso the context doesn't matter? (given the object whose mesh should be triangulated) $\endgroup$Nathan– Nathan2020-01-21 21:49:21 +00:00Commented Jan 21, 2020 at 21:49