[Bf-blender-cvs] [63564a80c0b] geometry-nodes-distribute-points: Fix point dist tilining bugs

[Sebastian Parborg]

Commit: 63564a80c0b848e01b34572c218443c01f8a99a0
Author: Sebastian Parborg
Date:   Thu Dec 3 18:11:40 2020 +0100
Branches: geometry-nodes-distribute-points
https://developer.blender.org/rB63564a80c0b848e01b34572c218443c01f8a99a0

Fix point dist tilining bugs

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M	source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc

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diff --git a/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc b/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
index 48a663dcd1d..54877bb2abb 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
@@ -196,10 +196,10 @@ static Vector<float3> poisson_scatter_points_from_mesh(Mesh *mesh,
     data.raycast_callback = treedata.raycast_callback;
     data.projected_points = &final_points;
 
-    const float max_dist = bb_max[2] - bb_min[2];
+    const float max_dist = bb_max[2] - bb_min[2] + 2.0f;
     const float3 dir = float3(0, 0, -1);
     float3 raystart;
-    raystart.z = bb_max[2];
+    raystart.z = bb_max[2] + 1.0f;
 
     float tile_start_x_coord = bb_min[0];
     int tile_repeat_x = ceilf((bb_max[0] - bb_min[0]) / point_scale_multiplier);
@@ -207,17 +207,18 @@ static Vector<float3> poisson_scatter_points_from_mesh(Mesh *mesh,
     float tile_start_y_coord = bb_min[1];
     int tile_repeat_y = ceilf((bb_max[1] - bb_min[1]) / point_scale_multiplier);
 
+    // TODO this can easily be multithreaded.
     for (int x = 0; x < tile_repeat_x; x++) {
+      float tile_curr_x_coord = x * point_scale_multiplier + tile_start_x_coord;
       for (int y = 0; y < tile_repeat_y; y++) {
+        float tile_curr_y_coord = y * point_scale_multiplier + tile_start_y_coord;
         for (auto &point : output_points) {
-          raystart.x = point.x + tile_start_x_coord;
-          raystart.y = point.y + tile_start_y_coord;
+          raystart.x = point.x + tile_curr_x_coord;
+          raystart.y = point.y + tile_curr_y_coord;
           BLI_bvhtree_ray_cast_all(
               treedata.tree, raystart, dir, 0.0f, max_dist, project_2d_bvh_callback, &data);
         }
-        tile_start_y_coord += point_scale_multiplier;
       }
-      tile_start_x_coord += point_scale_multiplier;
     }
   }