Cleanup: Update / improve comments

1 files changed, 6 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_spline.hh b/source/blender/blenkernel/BKE_spline.hh
index 54a8e97d5c6..acff2843806 100644
--- a/source/blender/blenkernel/BKE_spline.hh
+++ b/source/blender/blenkernel/BKE_spline.hh
@@ -48,10 +48,12 @@ using SplinePtr = std::unique_ptr<Spline>;
  * evaluation happens in a layer on top of the evaluated points generated by the derived types.
  *
  * There are a few methods to evaluate a spline:
- *  1. #evaluated_positions and #interpolate_to_evaluated_points give data at the initial
+ *  1. #evaluated_positions and #interpolate_to_evaluated_points give data for the initial
  *     evaluated points, depending on the resolution.
  *  2. #lookup_evaluated_factor and #lookup_evaluated_factor are meant for one-off lookups
  *     along the length of a curve.
+ *  3. #sample_uniform_index_factors returns an array that stores uniform-length samples
+ *     along the spline which can be used to interpolate data from method 1.
  *
  * Commonly used evaluated data is stored in caches on the spline itself so that operations on
  * splines don't need to worry about taking ownership of evaluated data when they don't need to.
@@ -288,7 +290,7 @@ class BezierSpline final : public Spline {
     int next_control_point_index;
     /**
      * Linear interpolation weight between the two indices, from 0 to 1.
-     * Higher means next control point.
+     * Higher means closer to next control point.
      */
     float factor;
   };
@@ -319,6 +321,8 @@ class NURBSpline final : public Spline {
     EndPoint,
     Bezier,
   };
+
+  /** Method used to recalculate the knots vector when points are added or removed. */
   KnotsMode knots_mode;
 
   struct BasisCache {