[Bf-blender-cvs] [f6b162eca03] geometry-nodes-level-set-nodes: Fix incorrect values used to construct Ray

[Hans Goudey]

Commit: f6b162eca03f2eb19b32c52327be924d7ac96471
Author: Hans Goudey
Date:   Sun Sep 5 12:17:52 2021 -0500
Branches: geometry-nodes-level-set-nodes
https://developer.blender.org/rBf6b162eca03f2eb19b32c52327be924d7ac96471

Fix incorrect values used to construct Ray

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

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diff --git a/source/blender/nodes/geometry/nodes/node_geo_raycast.cc b/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
index dafe4fbbcff..281d7564c22 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_raycast.cc
@@ -97,7 +97,11 @@ static void raycast_to_level_set(const openvdb::FloatGrid &level_set,
   for (const int i : ray_origins.index_range()) {
     const openvdb::math::Vec3s origin(ray_origins[i].x, ray_origins[i].y, ray_origins[i].z);
     const openvdb::math::Vec3s dir(ray_directions[i].x, ray_directions[i].y, ray_directions[i].z);
-    const openvdb::math::Ray<double> ray(origin, dir, 0.0, ray_lengths[i]);
+    const openvdb::math::Ray<double> ray(
+        origin,
+        dir.unitSafe(),
+        std::numeric_limits<double>::epsilon(),
+        std::max(std::numeric_limits<float>::epsilon(), ray_lengths[i]));
 
     openvdb::math::Vec3d hit_position(0);
     openvdb::math::Vec3d hit_normal(0);