Commit: 5568455d63a2c04c468e4c67358ecf9679e70749
Author: Hans Goudey
Date: Tue Dec 7 15:17:10 2021 -0500
Branches: master
https://developer.blender.org/rB5568455d63a2c04c468e4c67358ecf9679e70749
Cleanup: Extend a few comments in BKE_spline.hh
===================================================================
M source/blender/blenkernel/BKE_spline.hh
===================================================================
diff --git a/source/blender/blenkernel/BKE_spline.hh
b/source/blender/blenkernel/BKE_spline.hh
index d487bf15e25..4d3009a4cc6 100644
--- a/source/blender/blenkernel/BKE_spline.hh
+++ b/source/blender/blenkernel/BKE_spline.hh
@@ -40,7 +40,8 @@ using SplinePtr = std::unique_ptr<Spline>;
/**
* A spline is an abstraction of a single branch-less curve section, its
evaluation methods,
* and data. The spline data itself is just control points and a set of
attributes by the set
- * of "evaluated" data is often used instead.
+ * of "evaluated" data is often used instead. Conceptually, the derived vs.
original data is
+ * an essential distinction. Derived data is usually calculated lazily and
cached on the spline.
*
* Any derived class of Spline has to manage two things:
* 1. Interpolating arbitrary attribute data from the control points to
evaluated points.
@@ -600,9 +601,12 @@ class NURBSpline final : public Spline {
};
/**
- * A Poly spline is like a bezier spline with a resolution of one. The main
reason to distinguish
+ * A Poly spline is like a Bézier spline with a resolution of one. The main
reason to distinguish
* the two is for reduced complexity and increased performance, since
interpolating data to control
* points does not change it.
+ *
+ * Poly spline code is very simple, since it doesn't do anything that the base
#Spline doesn't
+ * handle. Mostly it just worries about storing the data used by the base
class.
*/
class PolySpline final : public Spline {
blender::Vector<blender::float3> positions_;
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