Created
July 16, 2024 21:54
-
-
Save rickomax/32830cfe168a551a26b91c1fc94de9e1 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # This Python script for Blender first tries to convert all the Blender scene meshes into quads | |
| # It will then proceed to merge all vertices that occupy the same position | |
| # Lastly, it will subdivide the quad edges until every edge has at least the length of the "max_edge_length" variable | |
| # You can use this script to subdivide the scene into quads, which is ideal for vertex lighting | |
| # Please set the "max_edge_length" and "vert_merge_distance" variables value accordingly | |
| # Set the maximum edge length here. The smaller the value, the more the edges get subdivided | |
| max_edge_length = 300.0 | |
| # Set the minimum distance a vertex can have from each other not to be merged here | |
| vert_merge_distance = 0.00001 | |
| import bpy | |
| import bmesh | |
| def remove_duplicates(obj, merge_distance): | |
| bpy.context.view_layer.objects.active = obj | |
| bpy.ops.object.mode_set(mode='EDIT') | |
| bpy.ops.mesh.select_all(action='SELECT') | |
| bpy.ops.mesh.remove_doubles(threshold = merge_distance) | |
| bpy.ops.object.mode_set(mode='OBJECT') | |
| def tris_to_quads(obj): | |
| bpy.context.view_layer.objects.active = obj | |
| bpy.ops.object.mode_set(mode='EDIT') | |
| bpy.ops.mesh.select_all(action='SELECT') | |
| bpy.ops.mesh.tris_convert_to_quads() | |
| bpy.ops.object.mode_set(mode='OBJECT') | |
| def subdivide_quads_by_length(obj, max_length): | |
| bpy.context.view_layer.objects.active = obj | |
| bpy.ops.object.mode_set(mode='EDIT') | |
| me = obj.data | |
| bm = bmesh.from_edit_mesh(me) | |
| subdivided_edges = set() | |
| for face in bm.faces: | |
| for edge in face.edges: | |
| if edge.calc_length() > max_length: | |
| if edge not in subdivided_edges: | |
| subdivided_edges.add(edge) | |
| bmesh.ops.subdivide_edges(bm, edges=list(subdivided_edges), cuts=1, use_grid_fill=True, use_only_quads=True) | |
| bmesh.update_edit_mesh(me) | |
| bpy.ops.object.mode_set(mode='OBJECT') | |
| return bool(subdivided_edges) | |
| for obj in bpy.context.scene.objects: | |
| if obj.type == 'MESH': | |
| tris_to_quads(obj) | |
| remove_duplicates(obj, vert_merge_distance) | |
| subdivide = True | |
| while subdivide: | |
| subdivide = subdivide_quads_by_length(obj, max_edge_length) |
Author
rickomax
commented
Jul 16, 2024
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment