Jacques Lucke
a58be397e2
This adds a new Add brush for the new curves object type in sculpt mode. The brush is used to insert new curves (typically hair) on the surface object. Supported features: * Add single curve exactly at the cursor position when `Add Amount` is 1. * Front faces only. * Independent interpolate shape and interpolate length settings. * Smooth and flat shading affects curve shape interpolation. * Spherical and projection brush. This also adds the `surface_triangle_index` and `surface_triangle_coordinate` attributes. Those store information about what position on the surface each added curve is attached to: * `surface_triangle_index` (`int`): Index of the internal triangle that a curve is attached to. `-1` when the curve is not attached to the surface. * `surface_triangle_coordinate` (`float2`): First two numbers of a barycentric coordinate that reference a specific position within the triangle. Ref T96444. Differential Revision: https://developer.blender.org/D14340