[Help]Script that puts a modifier inbetween others?

Technical Support Python Support
1

I need a script that adds a new modifier in-between two other modifiers by name.

2

import bpy

bpy.context.scene.objects.active = bpy.data.objects[‘Suzanne’]
bpy.ops.object.modifier_add(type=‘BOOLEAN’)
bpy.context.object.modifiers[“Boolean”].object = bpy.data.objects[‘Sphere’]
bpy.context.object.modifiers[“Boolean”].operation = ‘INTERSECT’
bpy.ops.object.modifier_apply(apply_as=‘DATA’, modifier=‘Boolean’)

3

import bpy

bpy.context.scene.objects.active = bpy.data.objects[‘Suzanne’]
bpy.ops.object.modifier_add(type=‘BOOLEAN’)
bpy.context.object.modifiers[“Boolean”].object = bpy.data.objects[‘Sphere’]
bpy.context.object.modifiers[“Boolean”].operation = ‘INTERSECT’
bpy.ops.object.modifier_apply(apply_as=‘DATA’, modifier=‘Boolean’)

4

How is this script supposed to help me achieve my goal?

5

https://www.blender.org/api/blender_python_api_2_77a_release/bpy.ops.object.html?highlight=modifier_move_up#bpy.ops.object.modifier_move_up

Apologies Im on small device and can’t type a full script right now. I usually count the number of places I need to move and use a for loop to move it up. The only problem is that this uses an operator instead of manipulating blender data directly so if the object is complex and the modifiers are computationally expensive then it can be quite slow because I think it recalculates the whole mesh and updates the scene each time. I haven’t tried turning all modifiers off, moving them around, then turning them back on.

-Best
Patrick

6

Try this!



def insert_new_mod_below(obj, mod_name, new_mod_type = 'SMOOTH'):
    '''
    obj - blender object
    mod_name - existing modifier to add new modifier below
    new_mod_type - type of modifier to add
    '''
    
    if mod_name not in obj.modifiers:
        print('error, this modifier is not in this object mod stack')
        return None

    count = 0
    for i, mod in enumerate(obj.modifiers):
        if mod.name == mod_name:
            count = i
            break

    N = len(obj.modifiers)
    move_up = N - count - 1  #number of slots to move the modifier up

    bpy.ops.object.select_all(action = 'DESELECT')
    bpy.context.scene.objects.active = obj
    obj.select = True
    obj.hide = False

    mod = obj.modifiers.new('New Mod', type = new_mod_type)
    for n in range(move_up):
        bpy.ops.object.modifier_move_up(modifier = mod.name)

    return mod