edge crease toggle

Coding Python Support
1

hey guys,

can someone help me with a toggle script for creasing an edge?

i found this command

bpy.ops.transform.edge_crease

but if i add (value=1) at the end nothing happens.
does anyone know why?

cheers christian

2

Reported:
https://developer.blender.org/T40467

You can avoid the operator and use:

import bpy

class SimpleOperator(bpy.types.Operator):
    """Tooltip"""
    bl_idname = "object.simple_operator"
    bl_label = "Simple Object Operator"

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        
        ob = context.object
        me = ob.data
        
        mode = context.object.mode
        bpy.ops.object.mode_set(mode='OBJECT')
        
        for edge in me.edges:
            if edge.select:
                edge.crease = 1.0
                
        bpy.ops.object.mode_set(mode=mode)
        
        return {'FINISHED'}


def register():
    bpy.utils.register_class(SimpleOperator)


def unregister():
    bpy.utils.unregister_class(SimpleOperator)


if __name__ == "__main__":
    register()

    # test call
    bpy.ops.object.simple_operator()

To avoid mode switches, use bmesh module:

import bpy
import bmesh

class SimpleOperator(bpy.types.Operator):
    """Tooltip"""
    bl_idname = "object.simple_operator"
    bl_label = "Simple Object Operator"

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        
        ob = context.object
        me = ob.data
        bm = bmesh.from_edit_mesh(me)
        cl = bm.edges.layers.crease.verify()
        
        for edge in bm.edges:
            if edge.select:
                edge[cl] = 1.0
        
        bmesh.update_edit_mesh(me, False, False)
        
        return {'FINISHED'}


def register():
    bpy.utils.register_class(SimpleOperator)


def unregister():
    bpy.utils.unregister_class(SimpleOperator)


if __name__ == "__main__":
    register()

    # test call
    bpy.ops.object.simple_operator()
3

awesome … many many thanks!!

would it be possible to make a toggle out of this btw so that i can put it to 1 shortcut instead of 2?

i just added one line to simultaneoulsy make the edge sharp as well as changed the name

bl_info = {    "name": "hard_edges",
    "location": "File/UserPrefs/Input Add new key in 3D View 'object.hard_edges'",  
    "description": "Hard Edges",  
    "category": "Mesh",
}


import bpy


class hard_edges(bpy.types.Operator):
    """hard_edges"""
    bl_idname = "object.hard_edges"
    bl_label = "hard_edges"


    @classmethod
    def poll(cls, context):
        return context.active_object is not None


    def execute(self, context):
        
        ob = context.object
        me = ob.data
        
        mode = context.object.mode
        bpy.ops.object.mode_set(mode='OBJECT')
        
        for edge in me.edges:
            if edge.select:
                edge.crease = 1.0
                
        bpy.ops.object.mode_set(mode=mode)
        bpy.ops.mesh.mark_sharp(clear=False)


        return {'FINISHED'}


def register():
    bpy.utils.register_class(hard_edges)




def unregister():
    bpy.utils.unregister_class(hard_edges)




if __name__ == "__main__":
    register()


    # test call
    bpy.ops.object.hard_edges()
4

Sure you can toggle between states:

import bpy
import bmesh

class SimpleOperator(bpy.types.Operator):
    """Tooltip"""
    bl_idname = "object.simple_operator"
    bl_label = "Simple Object Operator"

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        
        ob = context.object
        me = ob.data
        bm = bmesh.from_edit_mesh(me)
        cl = bm.edges.layers.crease.verify()
        
        for edge in bm.edges:
            if edge.select and (edge[cl] == 0.0 or edge.smooth):
                sharp = False
                break
        else:
            sharp = True
        
        for edge in bm.edges:
            if edge.select:
                edge[cl] = 0.0 if sharp else 1.0
                edge.smooth = sharp
        
        bmesh.update_edit_mesh(me, False, False)
        
        return {'FINISHED'}


def register():
    bpy.utils.register_class(SimpleOperator)


def unregister():
    bpy.utils.unregister_class(SimpleOperator)


if __name__ == "__main__":
    register()

    # test call
    bpy.ops.object.simple_operator()
5

works like a charm. many thanks again !
could you do me a favor and delete some messages in your inbox so i can send you a PM?

christian