Fix: Curve parameter node broken for Bezier curves after refactor

The last length value was not initialized, and all length values were
moved one position towards the front of each curve incorrectly.
Also fix an assert when a curve only had a single point.

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
index 62fae8b8eca..be17918609f 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_spline_parameter.cc
@@ -75,8 +75,8 @@ static Array<float> curve_length_point_domain(const bke::CurvesGeometry &curves)
       switch (types[i_curve]) {
         case CURVE_TYPE_CATMULL_ROM: {
           const int resolution = resolutions[i_curve];
-          for (const int i : IndexRange(points.size()).drop_front(1).drop_back(1)) {
-            lengths[i] = evaluated_lengths[resolution * i - 1];
+          for (const int i : IndexRange(points.size()).drop_back(1)) {
+            lengths[i + 1] = evaluated_lengths[resolution * i - 1];
           }
           break;
         }
@@ -85,8 +85,8 @@ static Array<float> curve_length_point_domain(const bke::CurvesGeometry &curves)
           break;
         case CURVE_TYPE_BEZIER: {
           const Span<int> offsets = curves.bezier_evaluated_offsets_for_curve(i_curve);
-          for (const int i : IndexRange(points.size()).drop_front(1).drop_back(1)) {
-            lengths[i] = evaluated_lengths[offsets[i] - 1];
+          for (const int i : IndexRange(points.size()).drop_back(1)) {
+            lengths[i + 1] = evaluated_lengths[offsets[i] - 1];
           }
           break;
         }