New Bevel API - custom curve

Question

I am trying for the first time to have a look at some python API.

So my goal would be to create a bevel modifier with the custom curve that I create:

  point_init(&profile->path[0], 1.0f, 0.0f, 0, HD_VECT, HD_VECT);
  point_init(&profile->path[1], 1.0f, 0.25f, 0, HD_VECT, HD_VECT);
  point_init(&profile->path[2], 0.75f, 0.25f, 0, HD_VECT, HD_VECT);
  point_init(&profile->path[10], 0.0f, 1.0f, 0, HD_VECT, HD_VECT);

So I can use use_custom_profile

The API doc: https://docs.blender.org/api/current/bpy.types.BevelModifier.html?highlight=b

I don't understand is this:

custom_profile The path for the custom profile

Type: CurveProfile, (readonly)

Does this mean that it's not possible to give CurveProfile the points I want?

Thanks :)

Answer 1

Add the modifier adjust settings

When using a custom profile, 2 points are created at (1, 0) and (0, 0). Add points between these.

When finished adding points update the profile.

import bpy


pts = (
    (0.4, 0.7),
    (0.6, 0.3) 
    )
context = bpy.context
ob = context.object
bm = ob.modifiers.new(
        name="Bevo",
        type='BEVEL',
        )
bm.use_custom_profile = True

bm.segments = 4
bm.width = 0.4

points = bm.custom_profile.points

for p in pts:
    pt = points.add(*p)
    pt.handle_type_1 = 'AUTO' 
    pt.handle_type_2 = 'AUTO'
    pt.select = True

bm.custom_profile.update() 

To work out new features, recommend using the python console and auto complete. The API is pretty consistent. This is akin to adding fcurve keyframe points, or bezier curve points.

>>> bm = C.object.modifiers.new(name="Foo", type='BEVEL')
>>> bm.custom_profile.points.
                             add(
                             as_bytes(
                             bl_rna

Yes also found the ordering tricky, without testing it appears the first and last points could be indices 0, 1