Fix T94113: Local view + Geometry Nodes is broken for instances

`GeometrySet::compute_boundbox_without_instances` may not initialize min
max in some cases such as meshes without vertices.

This can result in a Bounding Box with impossible dimensions
(min=FLT_MAX, max=-FLT_MAX).

So repeat the same solution seen in `BKE_object_boundbox_calc_from_mesh`
and set boundbox values to zero.

Reviewed By: HooglyBoogly

Differential Revision: https://developer.blender.org/D13664

1 files changed, 8 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/curve_eval.cc b/source/blender/blenkernel/intern/curve_eval.cc
index 38f736e6907..e2461adaaca 100644
--- a/source/blender/blenkernel/intern/curve_eval.cc
+++ b/source/blender/blenkernel/intern/curve_eval.cc
@@ -100,11 +100,17 @@ void CurveEval::transform(const float4x4 &matrix)
   }
 }
 
-void CurveEval::bounds_min_max(float3 &min, float3 &max, const bool use_evaluated) const
+bool CurveEval::bounds_min_max(float3 &min, float3 &max, const bool use_evaluated) const
 {
+  bool have_minmax = false;
   for (const SplinePtr &spline : this->splines()) {
-    spline->bounds_min_max(min, max, use_evaluated);
+    if (spline->size()) {
+      spline->bounds_min_max(min, max, use_evaluated);
+      have_minmax = true;
+    }
   }
+
+  return have_minmax;
 }
 
 float CurveEval::total_length() const