I’m writing a script to make a new mesh based of an existing mesh, for various reasons.
unfortunate the simplest test case fails, which happens to be the main shape that will be copied in practice to a new mesh.
(left bmesh, right source mesh)
going clockwise the source mesh indices go 0,2,3,1 but the code i’ve managed to write i guess assumes that the order to connect edges is sequential 0,1,2,3
I’m assuming i need to grab some more information from the source mesh, maybe what edges are connected to what indices and construct it that way instead of just forcing a new face from the given verts?
Anyway here’s my code
import bpy
import bmesh
ob = bpy.context.active_object
bpy.context.active_object.select_set(state=False)
# Loops per face
verts = []
#for face in ob.data.polygons:
# for vert_idx, loop_idx in zip(face.vertices, face.loop_indices):
# uv_coords = ob.data.uv_layers.active.data[loop_idx].uv
# #print("face idx: %i, vert idx: %i, uvs: %f, %f" % (face.index, vert_idx, uv_coords.x, uv_coords.y))
for vx in ob.data.vertices:
co_final = ob.matrix_world @ vx.co
verts.append(co_final)
#print(co_final, v.index)
#print(verts)
mesh = bpy.data.meshes.new("mesh") # add a new mesh
obj = bpy.data.objects.new("MyObject", mesh) # add a new object using the mesh
scene = bpy.context.collection
scene.objects.link(obj) # put the object into the scene (link)
bpy.context.view_layer.objects.active = obj # set as the active object in the scene
#obj.select = True # select object
bpy.context.active_object.select_set(state=True)
mesh = bpy.context.object.data
bm = bmesh.new()
verts = [bm.verts.new(v) for v in verts]
face = bm.faces.new(verts)
bm.normal_update()
#face.normal = (0, 0, -1)
# make the bmesh the object's mesh
bm.to_mesh(mesh)
bm.free() # always do this when finished
