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I’m trying to write coordinates into a vertex but somehow it doesn’t seem to take input
Every time this runs it prints some “2”s in the console as if it worked, but the next run they’re back to being 1 and -1 again.
import bpy
import bmesh
obj=bpy.context.edit_object
m=obj.data
bm=bmesh.from_edit_mesh(m)
print("---")
for i in range(0,8):
v=bm.verts[i]
[email protected]
print(co.x)
co.x=2
print(co.x)
bmesh.update_edit_mesh(m)
Please help
Well, the problem is here:
[email protected]
So here you have used an operator @. Like adding + or multiplying * it gets 2 entities, makes an operation with them and results a new entity. The @ operator applies a transformation matrix on vector v.co and the result of this operation is saved in co property. So instead of linking the data it creates new data, so that assigning something to co doesn't make sense, because it holds a modified copy, not the link.
I suppose you can solve this like this:
import bpy
import bmesh
# import new module
import copy
obj=bpy.context.edit_object
m=obj.data
bm=bmesh.from_edit_mesh(m)
print("---")
for i in range(0,8):
v=bm.verts[i]
[email protected]
print(co.x)
co.x=2
print(co.x)
# get a copy of transform matrix to be able to invert it:
inverted = copy.copy(obj.matrix_world)
inverted.invert()
# now write property to the cube
v.co = inverted @ co
bmesh.update_edit_mesh(m)
I have used inverted matrix to write coordinates back.
