Function craziness...

Coding Python Support
1

Hi;

I have a very simple task I want to run inside a function, which is:

bpy.ops.object.duplicate(linked=False, mode='DUMMY')#Duplicate the active object
objDup = bpy.context.scene.objects.active#make it the active object
bpy.ops.object.shape_key_remove(all=True)#and delete all its shapekeys

Now when I run this as is, outside the function, everything’s ok. It does what it’s supposed to, takes the active object, duplicates it, makes the duplicate the active object and removes all its shapekeys.

But when I run it inside a function, it duplicates the active object, but removes the shapekeys from the original instead of the duplicated object, although the code is very clear about it… What gives???

Here’s the pertinent part of the code:

class FreezeShapes(bpy.types.Operator):
    bl_label = "Freeze ShapeKeys"
    bl_idname = "objeler.frzshps"   
    def execute(self, context):
        obj = bpy.context.active_object
        if obj.type == "MESH":
            shpKys = obj.data.shape_keys
            if shpKys is not None:
                self.shapeUtils(obj)
            else:
                pass
        else:
            pass 
        return {'FINISHED'}
    
    def shapeUtils(self, objeler):
        objeler.select = True
        bpy.ops.object.duplicate(linked=False, mode='DUMMY')
        objDup = bpy.context.scene.objects.active
        bpy.ops.object.shape_key_remove(all=True)

please help…

AJ

2

jacobo’s
<class FreezeShapes(bpy.types.Operator):> works as designed:
duplicates current selected object with shapekey and remove cloned object’s shapekey.
Tested in manual mode (button) and automatic mode (run by other function).
Suppose there is an object with shapekey and it is the only one selected.

Blender 2.72

import bpy

# Menu in toolprops region
class ToolPropsPanel(bpy.types.Panel):
  bl_label = "my Buttons in Tool props"
  bl_space_type = "VIEW_3D"
  bl_region_type = "TOOL_PROPS"
  def draw(self, context):
    self.layout.operator("objeler.frzshps")

# test 1: manually
# class will be assigned to a button 
class FreezeShapes(bpy.types.Operator):
    bl_label = "Freeze ShapeKeys"
    bl_idname = "objeler.frzshps"
    
    def execute(self, context):
        obj = bpy.context.active_object
        if obj.type == "MESH":
            shpKys = obj.data.shape_keys
            if shpKys is not None:
                self.shapeUtils(obj)
            else:
                pass
        else:
            pass 
        return {'FINISHED'}
    
    def shapeUtils(self, objeler):
        objeler.select = True
        bpy.ops.object.duplicate(linked=False, mode='DUMMY')
        objDup = bpy.context.scene.objects.active
        bpy.ops.object.shape_key_remove(all=True)

# test 2: automatically 
# use another function to create instance of this class 
class FreezeShapesNotOperator():
    bl_label = "Freeze ShapeKeys"
    bl_idname = "objeler.frzshps"
    
    #def execute(self, context):
    def __init__(self):
        obj = bpy.context.active_object
        if obj.type == "MESH":
            shpKys = obj.data.shape_keys
            if shpKys is not None:
                self.shapeUtils(obj)
            else:
                pass
        else:
            pass 
        #return {'FINISHED'}
    
    def shapeUtils(self, objeler):
        objeler.select = True
        bpy.ops.object.duplicate(linked=False, mode='DUMMY')
        objDup = bpy.context.scene.objects.active
        bpy.ops.object.shape_key_remove(all=True)

        
if __name__ == "__main__":
    # Before run this script, please make sure that
    # an object with shapekey is only one selected
    
    # register menu and button
    bpy.utils.register_module(__name__)
    
    # automatically run the function,
    fs = FreezeShapesNotOperator()
3

works fine here, although the duplicate operator duplicates all selected objects, whereas shake_key_remove acts upon the active object only.