From 49927568e4aae9577b7ced2213c5af0b3fb93ced Mon Sep 17 00:00:00 2001
From: David Allemang <allemang.d@gmail.com>
Date: Tue, 13 Oct 2020 10:56:55 -0400
Subject: [PATCH] Introduce cgl::Buffer::put<E> for Eigen matrices and other
 containers.

Make put(std::vector<T>) more generic by specializing the new put<E> method.
---
 vis/include/cgl/buffer.hpp | 14 ++++++++++----
 vis/include/rendering.hpp  |  4 ++--
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/vis/include/cgl/buffer.hpp b/vis/include/cgl/buffer.hpp
index de18bc1..ad3226e 100644
--- a/vis/include/cgl/buffer.hpp
+++ b/vis/include/cgl/buffer.hpp
@@ -53,14 +53,20 @@ namespace cgl {
             glNamedBufferData(id, sizeof(T), &data, usage);
         }
 
-        void put(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW) {
-            put(&data[0], data.size(), usage);
-        }
-
         void put(const T *data, const size_t &size, GLenum usage = GL_STATIC_DRAW) {
             glNamedBufferData(id, sizeof(T) * size, data, usage);
         }
 
+        template<class E>
+        void put(const E &data, GLenum usage = GL_STATIC_DRAW) {
+            put(data.data(), data.size(), usage);
+        }
+
+        template<>
+        void put<std::vector<T>>(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW) {
+            put(data.data, data.size(), usage);
+        }
+
         void bound(GLenum target, const std::function<void()> &action) const {
             glBindBuffer(target, id);
             action();
diff --git a/vis/include/rendering.hpp b/vis/include/rendering.hpp
index 090238d..9fe87d4 100644
--- a/vis/include/rendering.hpp
+++ b/vis/include/rendering.hpp
@@ -44,8 +44,8 @@ public:
 
     template<class T>
     Slice(const tc::Group &g, T all_sg_gens, const std::vector<std::vector<int>> &exclude) : group(g) {
-        const Prims<N> &data = merge<N>(hull<N>(g, all_sg_gens, exclude));
-        ibo.put(data.data(), data.size());
+        const auto &data = merge<N>(hull<N>(g, all_sg_gens, exclude));
+        ibo.put(data);
         vao.ipointer(0, ibo, 4, GL_UNSIGNED_INT);
     }