Support for builtin curve control point attributes #87430

New Issue

Hans Goudey · 2021-04-12T15:45:00+02:00

Hans Goudey commented

2021-04-12 15:45:00 +02:00

The builtin attributes on curve control points are:

position
radius
tilt -- an angle added to the final evaluated normals

Bezier splines have some extra builtin attributes:

handle_position_a -- better name?
handle_position_b -- better name?
The handle types could also be thought of as an attribute, but they are enums, so they won't be part of the attribute system now.

NURBS splines have one extra builtin attribute:

weight -- The relative influence of this control point vs. the others

This task is for supporting reading to and writing from these builtin attributes

The builtin attributes on curve control points are: - `position` - `radius` - `tilt` -- an angle added to the final evaluated normals Bezier splines have some extra builtin attributes: - `handle_position_a` -- *better name?* - `handle_position_b` -- *better name?* - The handle types could also be thought of as an attribute, but they are enums, so they won't be part of the attribute system now. NURBS splines have one extra builtin attribute: - `weight` -- The relative influence of this control point vs. the others This task is for supporting reading to and writing from these builtin attributes

Hans Goudey commented

2021-04-12 15:45:00 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Hans Goudey commented

2021-04-12 15:45:00 +02:00

Added subscriber: @HooglyBoogly

Hans Goudey was assigned by Dalai Felinto

2021-05-10 14:15:56 +02:00

Kenzie commented

2021-05-12 03:20:54 +02:00

Added subscriber: @KenzieMac130

Kenzie commented

2021-05-12 03:20:54 +02:00

handle_position_a -- better name?
handle_position_b -- better name?

Are these guaranteed to have an order along the spline? If so might "head" and "tail" be more descriptive?

> handle_position_a -- better name? > handle_position_b -- better name? Are these guaranteed to have an order along the spline? If so might "head" and "tail" be more descriptive?

blender-admin commented

2021-05-12 17:21:12 +02:00

This issue was referenced by 1892b131ed

This issue was referenced by 1892b131edc76abb4439ca6fcc69b95a208ab7d7

Hans Goudey commented

2021-05-18 16:43:11 +02:00

Yeah, the order is guaranteed. More recently I was thinking "right" and "left", since I haven't seen "head" and "tail" elsewhere.

The design issue holding me back now is that I'd like to show somehow that only some splines have these attributes in the spreadsheet. We don't have a way to do that currently.

Yeah, the order is guaranteed. More recently I was thinking "right" and "left", since I haven't seen "head" and "tail" elsewhere. The design issue holding me back now is that I'd like to show somehow that only some splines have these attributes in the spreadsheet. We don't have a way to do that currently.

Dalai Felinto commented

2021-05-25 14:11:54 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Dalai Felinto closed this issue

2021-05-25 14:11:54 +02:00

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Support for builtin curve control point attributes #87430