diff --git a/src/core/include/pw/core/rectangle.hpp b/src/core/include/pw/core/rectangle.hpp
index afdea20..fc37d17 100644
--- a/src/core/include/pw/core/rectangle.hpp
+++ b/src/core/include/pw/core/rectangle.hpp
@@ -23,6 +23,8 @@
 #ifndef PW_CORE_RECT_HPP
 #define PW_CORE_RECT_HPP
 
+#include <initializer_list>
+
 #include <pw/core/point.hpp>
 #include <pw/core/size.hpp>
 
@@ -31,21 +33,27 @@ namespace pw {
 template <typename T_>
 struct rectangle_ {
 
-	size_<T_> size;
-	point_<T_> position;
+    point_<T_> position;
+    size_<T_> size;
 
-	rectangle_() = default;
+    rectangle_() = default;
 
-	rectangle_(point_<T_> const & p,size_<T_> const & s) : size(s), position(p) {}
+    rectangle_(const T_(&l)[4])
+    {
+        position.x = l[0]; position.y = l[1];
+        size.width = l[2]; size.height = l[3];
+    }
 
-	bool contains(const point_<T_>& p) const noexcept
+    rectangle_(point_<T_> const & p,size_<T_> const & s) : size(s), position(p) {}
+
+    bool contains(const point_<T_>& p) const noexcept
     {
         return p.x >= position.x && p.x <= position.x + size.width &&
-			   p.y >= position.y && p.y <= position.y + size.height;
+                p.y >= position.y && p.y <= position.y + size.height;
     }
 
     template <typename To_>
-	rectangle_<To_> cast() const { return rectangle_<To_>(position.template cast<To_>(),size.template cast<To_>()); }
+    rectangle_<To_> cast() const { return rectangle_<To_>(position.template cast<To_>(),size.template cast<To_>()); }
 
 };
 
diff --git a/src/scene/CMakeLists.txt b/src/scene/CMakeLists.txt
index 4b9ef6a..e8da538 100644
--- a/src/scene/CMakeLists.txt
+++ b/src/scene/CMakeLists.txt
@@ -8,6 +8,7 @@ set(hdrs_components
 	include/pw/scene/components/relationship.hpp
 	include/pw/scene/components/transform.hpp
 	include/pw/scene/components/projection.hpp
+        include/pw/scene/components/camera.hpp
 	)
 
 set(srcs
diff --git a/src/scene/include/pw/scene/entity.hpp b/src/scene/include/pw/scene/entity.hpp
index 5d32725..29e6f0c 100644
--- a/src/scene/include/pw/scene/entity.hpp
+++ b/src/scene/include/pw/scene/entity.hpp
@@ -142,9 +142,8 @@ private:
 
 }
 
-
-
 #include <pw/scene/components/relationship.hpp>
 #include <pw/scene/components/transform.hpp>
+#include <pw/scene/components/camera.hpp>
 
 #endif
diff --git a/src/scene/src/scene.cpp b/src/scene/src/scene.cpp
index 498b4ee..eeed05d 100644
--- a/src/scene/src/scene.cpp
+++ b/src/scene/src/scene.cpp
@@ -4,8 +4,23 @@
 #include "pw/core/debug.hpp"
 #include "pw/core/serialize.hpp"
 
+#include "pw/core/geometry.hpp"
+#include "pw/core/matrix_transform.hpp"
+
 namespace pw {
 
+
+struct mesh {
+    geometry geom;
+};
+
+struct mesh_renderer {
+    std::unique_ptr<int> state;
+//    std::vector<matrials> mat;
+};
+
+
+
 scene::scene()
     : _registry{ std::make_shared<entt::registry>()}
 {
@@ -24,6 +39,9 @@ size_t scene::count_alive_enties() const
 void scene::update_transforms()
 {
 
+
+    //auto [t,r] = view.get<transform,parent>(entity);
+
 #if 1
 
     // search for nodes with parent and transform (only find leaf nodes)
@@ -33,63 +51,60 @@ void scene::update_transforms()
     {
         debug::d() << "info for entity " << (int)entity;
 
-        //auto [t,r] = view.get<transform,parent>(entity);
-
-                // collect node path
+        // collect node path
         std::vector<transform> path;
         while (_registry->has<parent>(entity)) {
-
             if (_registry->has<transform>(entity)) {
                 path.push_back(_registry->get<transform>(entity));
             }
-
+            //
             entity = _registry->get<parent>(entity).entity;
         }
 
-
         debug::d() << "\tpath length " << path.size();
-
         std::reverse(path.begin(),path.end());
 
         auto m = pw::matrix4x4::identity();
 
         for (auto& transform : path) {
+
             transform._global = transform._local * m;
             m = transform._global;
 
             debug::d() << pw::serialize::matrix(m);
         }
 
-
-
-//        r = _registry->view<relationship>
-
+        //        r = _registry->view<relationship>
     }
 
 
+
+
+
+
 #else
 
-//    auto view = _registry->view<relationship>();
+    //    auto view = _registry->view<relationship>();
 
-//    for (auto e : view) {
+    //    for (auto e : view) {
 
-//        const auto& r = view.get<relationship>(e);
+    //        const auto& r = view.get<relationship>(e);
 
-//        if (r.children.size() && r.parent == entt::null) {
-//            debug::d() << "root '" << (int)e << "'";
-//        }
+    //        if (r.children.size() && r.parent == entt::null) {
+    //            debug::d() << "root '" << (int)e << "'";
+    //        }
 
-////        debug::d() << __PRETTY_FUNCTION__ << " " << view.get<relationship>(e).children.size();
+    ////        debug::d() << __PRETTY_FUNCTION__ << " " << view.get<relationship>(e).children.size();
 
-////        if
-//    }
+    ////        if
+    //    }
 #endif
 
-//    auto vr = _registry->view<relationship>();
+    //    auto vr = _registry->view<relationship>();
 
-//    for (auto [rel] : vr) {
+    //    for (auto [rel] : vr) {
 
-//    }
+    //    }
 
 }
 
diff --git a/src/visual/include/pw/visual/shader.hpp b/src/visual/include/pw/visual/shader.hpp
index a11681b..11a5435 100644
--- a/src/visual/include/pw/visual/shader.hpp
+++ b/src/visual/include/pw/visual/shader.hpp
@@ -61,7 +61,7 @@ public:
 
 protected:
 
-	std::map<code_type,std::string> _source;
+    std::unordered_map<code_type,std::string> _source;
 
 	struct impl;
 	std::unique_ptr<impl> _impl;
diff --git a/src/visual/include/pw/visual/vertex_array.hpp b/src/visual/include/pw/visual/vertex_array.hpp
index 0e2987c..d648944 100644
--- a/src/visual/include/pw/visual/vertex_array.hpp
+++ b/src/visual/include/pw/visual/vertex_array.hpp
@@ -12,12 +12,12 @@ class geometry;
 /**
  * @brief Connects mesh data with the render backend
  */
-class vertex_array {
+class mesh_renderer {
 public:
-	vertex_array();
-	vertex_array(const geometry& m);
+    mesh_renderer();
+    mesh_renderer(const geometry& m);
 
-	~vertex_array();
+    ~mesh_renderer();
 
 	void create(const geometry &m);
 	void release();
diff --git a/src/visual/src/pipeline.cpp b/src/visual/src/pipeline.cpp
index 20259a5..96ec433 100644
--- a/src/visual/src/pipeline.cpp
+++ b/src/visual/src/pipeline.cpp
@@ -40,7 +40,7 @@ struct triangle_renderer
 
 	shader shader_p;
 	geometry amesh;
-	vertex_array amesh_renderer;
+    mesh_renderer amesh_renderer;
 	time::tick_t tick;
 
 	triangle_renderer()
diff --git a/src/visual/src/texture.cpp b/src/visual/src/texture.cpp
index a184c44..115767a 100644
--- a/src/visual/src/texture.cpp
+++ b/src/visual/src/texture.cpp
@@ -12,10 +12,12 @@ struct texture::impl {
 	GLuint _texture_id;
 	GLuint _texture_sampler;
 
+    impl() = delete;
+
 	impl(texture& host)
 		: _host(host)
 	{
-	}
+    }
 
 	GLuint gl_shape() {
 		switch (_host.shape()) {
diff --git a/src/visual/src/vertex_array.cpp b/src/visual/src/vertex_array.cpp
index 8e714b0..dfb9a87 100644
--- a/src/visual/src/vertex_array.cpp
+++ b/src/visual/src/vertex_array.cpp
@@ -11,7 +11,7 @@
 
 namespace pw {
 
-struct vertex_array::impl {
+struct mesh_renderer::impl {
 
 	GLuint _vao = 0;
 
@@ -73,7 +73,8 @@ struct vertex_array::impl {
 
 		// indices
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _vbos[1]);
-		glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(m.indices().front()) * m.indices().size(), m.indices().data(),
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER,
+                     sizeof(m.indices().front()) * m.indices().size(), m.indices().data(),
 				GL_STATIC_DRAW);
 
 		// stop binding
@@ -120,37 +121,37 @@ struct vertex_array::impl {
 //
 //
 
-vertex_array::vertex_array()
-	: _impl(std::make_unique<vertex_array::impl>())
+mesh_renderer::mesh_renderer()
+    : _impl(std::make_unique<mesh_renderer::impl>())
 {
 }
 
-vertex_array::vertex_array(const geometry &m)
+mesh_renderer::mesh_renderer(const geometry &m)
 {
-	vertex_array();
+    mesh_renderer();
 	_impl->create(m);
 }
 
-vertex_array::~vertex_array()
+mesh_renderer::~mesh_renderer()
 {
 }
 
-bool vertex_array::ready() const
+bool mesh_renderer::ready() const
 {
 	return _impl->ready();
 }
 
-void vertex_array::create(const geometry &m)
+void mesh_renderer::create(const geometry &m)
 {
 	_impl->create(m);
 }
 
-void vertex_array::release()
+void mesh_renderer::release()
 {
 	_impl->release();
 }
 
-void vertex_array::draw()
+void mesh_renderer::draw()
 {
 	_impl->draw();
 }