4 files changed, 20 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 45ce843ef78..e4e9a6eff3a 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -1495,6 +1495,7 @@ int ntreeTexExecTree(struct bNodeTree *ntree,
 #define GEO_NODE_MATERIAL_ASSIGN 1082
 #define GEO_NODE_REALIZE_INSTANCES 1083
 #define GEO_NODE_ATTRIBUTE_STATISTIC 1084
+#define GEO_NODE_CURVE_SAMPLE 1085
 
 /** \} */
 
diff --git a/source/blender/blenkernel/BKE_spline.hh b/source/blender/blenkernel/BKE_spline.hh
index 0fbf39a52fa..541ff19c1cd 100644
--- a/source/blender/blenkernel/BKE_spline.hh
+++ b/source/blender/blenkernel/BKE_spline.hh
@@ -565,6 +565,7 @@ struct CurveEval {
 
   blender::Array<int> control_point_offsets() const;
   blender::Array<int> evaluated_point_offsets() const;
+  blender::Array<float> accumulated_spline_lengths() const;
 
   void assert_valid_point_attributes() const;
 };
diff --git a/source/blender/blenkernel/intern/curve_eval.cc b/source/blender/blenkernel/intern/curve_eval.cc
index ea84766943d..8eec7f5dfab 100644
--- a/source/blender/blenkernel/intern/curve_eval.cc
+++ b/source/blender/blenkernel/intern/curve_eval.cc
@@ -143,6 +143,23 @@ blender::Array<int> CurveEval::evaluated_point_offsets() const
   return offsets;
 }
 
+/**
+ * Return the accumulated length at the start of every spline in the curve.
+ *
+ * \note The result is one longer than the spline count; the last element is the total length.
+ */
+blender::Array<float> CurveEval::accumulated_spline_lengths() const
+{
+  Array<float> spline_lengths(splines_.size() + 1);
+  float spline_length = 0.0f;
+  for (const int i : splines_.index_range()) {
+    spline_lengths[i] = spline_length;
+    spline_length += splines_[i]->length();
+  }
+  spline_lengths.last() = spline_length;
+  return spline_lengths;
+}
+
 static BezierSpline::HandleType handle_type_from_dna_bezt(const eBezTriple_Handle dna_handle_type)
 {
   switch (dna_handle_type) {
diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index 7d679cfd076..e2891f00119 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -5183,6 +5183,7 @@ static void registerGeometryNodes()
   register_node_type_geo_bounding_box();
   register_node_type_geo_collection_info();
   register_node_type_geo_convex_hull();
+  register_node_type_geo_curve_sample();
   register_node_type_geo_curve_endpoints();
   register_node_type_geo_curve_fill();
   register_node_type_geo_curve_length();