Geometry Nodes: improve Point Distribute node

This greatly simplifies the Point Distribute node. For a poisson disk
distribution, it now uses a simpler dart throwing variant. This results
in a slightly lower quality poisson disk distribution, but it still
fulfills our requirements: have a max density, minimum distance input
and stability while painting the density attribute.

This new implementation has a number of benefits over the old one:
* Much less and more readable code.
* Easier to extend with other distribution algorithms.
* Easier to transfer more attributes to the generated points later on.
* More predictable output when changing the max density and min distance.
* Works in 3d, so no projection on the xy plane is necessary.

This is related to T84640.

Differential Revision: https://developer.blender.org/D10104

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index cf44d8a84be..1f6359c2ed4 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -436,7 +436,8 @@ static const EnumPropertyItem rna_node_geometry_point_distribute_method_items[]
      "POISSON",
      0,
      "Poisson Disk",
-     "Project points on the surface evenly with a Poisson disk distribution"},
+     "Distribute the points randomly on the surface while taking a minimum distance between "
+     "points into account"},
     {0, NULL, 0, NULL, NULL},
 };
 
@@ -6291,7 +6292,8 @@ static void rna_def_cmp_output_file_slot_file(BlenderRNA *brna)
 
   prop = RNA_def_property(srna, "save_as_render", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "save_as_render", 1);
-  RNA_def_property_ui_text(prop, "Save as Render", "Apply render part of display transform when saving byte image");
+  RNA_def_property_ui_text(
+      prop, "Save as Render", "Apply render part of display transform when saving byte image");
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, NULL);
 
   prop = RNA_def_property(srna, "format", PROP_POINTER, PROP_NONE);