From a28cc2d8be9d961c2710655e7f79f765d4800b5e Mon Sep 17 00:00:00 2001
From: David Allemang <david.allemang@kitware.com>
Date: Thu, 29 Oct 2020 20:43:06 -0400
Subject: [PATCH] Add "center" offset to each slice

---
 vis/include/rendering.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/vis/include/rendering.hpp b/vis/include/rendering.hpp
index ae86264..1b54379 100644
--- a/vis/include/rendering.hpp
+++ b/vis/include/rendering.hpp
@@ -47,6 +47,7 @@ public:
     cgl::VertexArray vao;
 
     vec5 root = vec5::Ones().normalized();
+    vec5 center = vec5::Zero();
     mat5 transform = mat5::Identity();
 
     vec3 color = vec3::Ones();
@@ -70,7 +71,7 @@ public:
 
         std::transform(
                 higher.begin(), higher.end(), higher.begin(),
-                [&](const vec5& v) { return transform * v; }
+                [&](const vec5& v) { return center + transform * v; }
         );
 
         std::vector<vec4> lower(higher.size());