Mesh Join¶
Functionality¶
Analogue to Ctrl+J in the 3dview of Blender. Separate nested lists of vertices and polygons/edges are merged. The keys in the Edge and Polygon lists are incremented to coincide with the newly created vertex list.
The inner workings go something like:
vertices_obj_1 = [
(0.2, 1.5, 0.1), (1.2, 0.5, 0.1), (1.2, 1.5, 0.1),
(0.2, 2.5, 5.1), (0.2, 0.5, 2.1), (0.2, 2.5, 0.1)]
vertices_obj_2 = [
(0.2, 1.4, 0.1), (1.2, 0.2, 0.3), (1.2, 4.5, 4.1),
(0.2, 1.5, 3.4), (5.2, 6.5, 2.1), (0.2, 5.5, 2.1)]
key_list_1 = [[0,1,2],[3,4,5]]
key_list_2 = [[0,1,2],[3,4,5]]
verts_nested = [vertices_obj_1, vertices_obj_2]
keys_nested = [key_list_1, key_list_2]
def mesh_join(verts_nested, keys_nested):
mega_vertex_list = []
mega_key_list = []
def adjust_indices(klist, offset):
return [[i+offset for i in keys] for keys in klist]
# for every key in klist, add offset
# return result
for vert_list, key_list in zip(verts_nested, keys_nested):
adjusted_key_list = adjust_indices(key_list, len(mega_vertex_list))
mega_vertex_list.extend(vert_list)
mega_key_list.extend(adjusted_key_list)
return mega_vertex_list, mega_key_list
print(mesh_join(verts_nested, keys_nested))
# result
[(0.2, 1.5, 0.1), (1.2, 0.5, 0.1), (1.2, 1.5, 0.1),
(0.2, 2.5, 5.1), (0.2, 0.5, 2.1), (0.2, 2.5, 0.1),
(0.2, 1.4, 0.1), (1.2, 0.2, 0.3), (1.2, 4.5, 4.1),
(0.2, 1.5, 3.4), (5.2, 6.5, 2.1), (0.2, 5.5, 2.1)]
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11]]
Inputs & Outputs¶
The inputs and outputs are vertices and polygons / edges.
Expects a nested collection of vertex lists. Each nested list represents an object which can itself have many vertices and key lists.
Examples¶
