mrmesh: Fix marching cubes algorithm on float images

ansk · Dec 6, 2016 · 57fd275 · 57fd275
1 parent c5d07b3
commit 57fd275
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/mesh/vox2mesh.h b/src/mesh/vox2mesh.h
@@ -489,7 +489,7 @@ namespace MR
                   // Calculate the precise position of this vertex, based on the
                   //   image intensities in the two relevant voxels
                   const float alpha = (threshold - in_vertex_values[vertex_indices[0]]) / (in_vertex_values[vertex_indices[1]] - in_vertex_values[vertex_indices[0]]);
-                  const Vertex pos = vertex_positions[0].cast<default_type>() + ((1.0f - alpha) * (vertex_positions[1] - vertex_positions[0]).cast<default_type>());
+                  const Vertex pos = vertex_positions[0].cast<default_type>() + (alpha * (vertex_positions[1] - vertex_positions[0]).cast<default_type>());
                   vertices.push_back (pos);
                 } else {
                   edge_to_output_vertex[edge_index] = existing_zero->second;