diff --git a/share/doc/pixwerx.xmind b/share/doc/pixwerx.xmind
index 5c96f0f..f6648d5 100644
Binary files a/share/doc/pixwerx.xmind and b/share/doc/pixwerx.xmind differ
diff --git a/src/core/include/pw/core/math.hpp b/src/core/include/pw/core/math.hpp
index 750c1da..b8fc16e 100644
--- a/src/core/include/pw/core/math.hpp
+++ b/src/core/include/pw/core/math.hpp
@@ -24,6 +24,7 @@
 #define PW_CORE_MATH_HPP
 
 #include <cmath>
+#include <algorithm>
 
 namespace pw {
 
@@ -45,6 +46,20 @@ inline T deg_to_rad(const T& angle_in_degree) {
 	return angle_in_degree * __DEG2RAD;
 }
 
+template <typename T>
+static inline
+T repeat(const T& t, const T& length) {
+	return std::clamp(t - std::floor(t / length) * length, T(0), length);
+}
+
+template <typename T>
+static inline
+T ping_pong(const T& t,const T& length) {
+	auto tn = repeat(t, length * T(2));
+	return length - std::abs(tn - length);
+}
+
+
 }
 
 #endif
diff --git a/src/core/include/pw/core/transform_tools.hpp b/src/core/include/pw/core/transform_tools.hpp
index 0941774..999469c 100644
--- a/src/core/include/pw/core/transform_tools.hpp
+++ b/src/core/include/pw/core/transform_tools.hpp
@@ -39,23 +39,42 @@ struct transform_tools {
     }
 
     inline static
-    matrix_<4,4,T> projection_from_frustum(T left,T right,T bottom,T top,T z_near,T z_far)
+	matrix_<4,4,T> projection_from_frustum(const T &left,const T &right,
+										   const T &bottom,const T &top,
+										   const T &z_near,const T &z_far)
     {
         matrix_<4,4,T> frustum; frustum.zero();
 
-        frustum(0,0) = T(2) * z_near / (right - left);
-        frustum(1,1) = T(2) * z_near / (top - bottom);
+		frustum(0,0) =  T(2) * z_near / (right - left);
+		frustum(1,1) =  T(2) * z_near / (top - bottom);
 
-        frustum(2,0) =     (right+left)/(right-left);	//A
-        frustum(2,1) =     (top+bottom)/(top-bottom);	//B
-        frustum(2,2) = -   (z_far+z_near)/(z_far-z_near);	//C
-        frustum(2,3) = -(T(2) * z_far*z_near)/(z_far-z_near);   //D
+		frustum(0,2) =  (right+left)/(right-left);	//A
+		frustum(1,2) =  (top+bottom)/(top-bottom);	//B
+		frustum(2,2) = -(z_far+z_near)/(z_far-z_near);	//C
+		frustum(2,3) = -T(2) * z_far*z_near/(z_far-z_near);   //D
 
-        frustum(3,2) = -T(1);
+		frustum(3,2) = -T(1);
 
         return frustum;
     }
 
+	inline static
+	matrix_<4,4,T> perspective_projection(const T &field_of_view,
+										  const T &aspect_ratio,
+										  const T &z_near,const T &z_far)
+	{
+		const T tan_half = tan(field_of_view / T(2));
+		const T right = aspect_ratio * tan_half * z_near;
+		const T left = -right;
+		const T top = aspect_ratio * tan_half;
+		const T bottom = -top;
+
+		return projection_from_frustum(left,right,
+									   bottom,top,
+									   z_near,z_far);
+	}
+
+
     inline static
     matrix_<4,4,T> orthogonal_projection(T left, T right,
                                          T bottom,T top,
@@ -78,63 +97,25 @@ struct transform_tools {
         return ortho;
     }
 
-    inline static
-    matrix_<4,4,T> perspective_projection(T fov_y, T aspect_ratio, T z_near, T z_far)
-    {
-        const T height = z_near * tan(fov_y/T(360) * pi<T>());  // half height of near plane
-        const T width = height * aspect_ratio;             // half width of near plane
 
-        return projection_from_frustum(-width, width, -height, height, z_near, z_far );
-    }
-
-    inline static
-    matrix_<4,4,T> look_at(
-            const vector3_<T> &eye,
-            const vector3_<T> &target,
-            const vector3_<T> &up)
-    {
+	inline static
+	matrix_<4,4,T> look_at(const vector3_<T> &position,
+						   const vector3_<T> &target,
+						   const vector3_<T> &up)
+	{
         matrix_<4,4,T> view_matrix; view_matrix.set_identity();
-        const vector3_<T> L = (target - eye).normalized();  // line of sight
 
-        const vector3_<T>  S = L.cross(up).normalized();
-        const vector3_<T> Ud = S.cross(L).normalized();
+		const vector3_<T> los = (target - position).normalized();  // line of sight
+		const vector3_<T>  sid = los.cross(up).normalized();
+		const vector3_<T> upd = sid.cross(los).normalized();
 
         // set base vectors
-        view_matrix.set_slice(S,        0,0);
-        view_matrix.set_slice(Ud,       0,1);
-        view_matrix.set_slice(L*T(-1),  0,2);
-        view_matrix.set_slice(eye,      0,3);
-
-        return view_matrix;
-
-
-        //        matrix<3,1,T> S = matrix31<T>::Cross(L,up);
-        //        S.normalize();
-        //        matrix<3,1,T> Ud = matrix31<T>::Cross(S,L);
-        //        Ud.normalize();
-
-        //        lookat(0,0) = S.at(0);
-        //        lookat(0,1) = S.at(1);
-        //        lookat(0,2) = S.at(2);
-        //        lookat(0,3) = T(0);
-
-        //        lookat(1,0) = Ud.at(0);
-        //        lookat(1,1) = Ud.at(1);
-        //        lookat(1,2) = Ud.at(2);
-        //        lookat(1,3) = T(0);
-
-        //        lookat(2,0) = -L.at(0);
-        //        lookat(2,1) = -L.at(1);
-        //        lookat(2,2) = -L.at(2);
-        //        lookat(3,2) = T(0);
-
-        //        lookat(3,0) = eye.at(0);
-        //        lookat(3,1) = eye.at(1);
-        //        lookat(3,2) = eye.at(2);
-        //        lookat(3,3) = 1;
-
-        //        return lookat;
+		view_matrix.set_slice(sid, 0, 0);
+		view_matrix.set_slice(upd, 0, 1);
+		view_matrix.set_slice(los * T(-1), 0, 2);
+		view_matrix.set_slice(position, 0, 3);
 
+		return view_matrix;
     }
 
 };
diff --git a/src/io/src/image_io.cpp b/src/io/src/image_io.cpp
index 6ae8e1e..f659ab7 100644
--- a/src/io/src/image_io.cpp
+++ b/src/io/src/image_io.cpp
@@ -24,6 +24,9 @@ struct image_io::impl
 			image r;
 
             r.create(sizei(x,y),image::pixel_layout::RGBA8,data);
+
+			stbi_image_free(data);
+
             return r;
         }
 
diff --git a/src/scene/include/pw/scene/camera.hpp b/src/scene/include/pw/scene/camera.hpp
index a8bd0c7..713aaad 100644
--- a/src/scene/include/pw/scene/camera.hpp
+++ b/src/scene/include/pw/scene/camera.hpp
@@ -47,7 +47,7 @@ public:
 
 	using component::component;
 
-	camera();
+	camera(node &host);
 
 	void set_projection(const matrix4x4 &projection);
 	const matrix4x4& projection() const;
diff --git a/src/scene/include/pw/scene/component.hpp b/src/scene/include/pw/scene/component.hpp
index 1be7791..4edb95f 100644
--- a/src/scene/include/pw/scene/component.hpp
+++ b/src/scene/include/pw/scene/component.hpp
@@ -42,11 +42,9 @@ class component {
 public:
 
 	friend class node;
+	typedef std::vector<component> array;
 
-    typedef std::shared_ptr<component> ref;
-    typedef std::vector<ref> array;
-
-	component();
+	component(node &host);
     component(const component& other);
     virtual ~component();
 
@@ -56,15 +54,14 @@ public:
 	uint32_t weight() const;
 	void set_weight(const uint32_t &weight);
 
-
 	template <typename T>
 	inline T* cast() { return static_cast<T*>(this);}
 
 protected:
 
-	uint32_t _weight = 0;
+	uint32_t _weight = 1;
 
-	node* _node;
+	node &_node;
 	bool _enabled;
 
 };
diff --git a/src/scene/include/pw/scene/node.hpp b/src/scene/include/pw/scene/node.hpp
index d4a853b..4b96895 100644
--- a/src/scene/include/pw/scene/node.hpp
+++ b/src/scene/include/pw/scene/node.hpp
@@ -42,6 +42,8 @@ namespace pw {
 class node {
 public:
 
+	friend class component;
+
     typedef shared_ptr<node> ref;
 	typedef std::vector<ref> ref_array;
 
@@ -66,8 +68,8 @@ public:
 	//! return parent of this node
 	inline ptr parent() const { return _path.back(); }
 
-    //! add a child node
-	ref add_child();
+	//! add a child node
+	void add_child(ref child_node);
 
 	//! remove a child
 	void remove_child(ref child_node);
@@ -85,29 +87,25 @@ public:
 	inline bool is_root() const { return _path.empty(); }
 
 	//! list of components
-    const component::array& components() const;
+	const component::array& components() const;
 
 	//! add a node component
-	void add_component(component::ref new_component);
+	void add_component(component new_component);
+
+	template<typename T>
+	void add_component_() {
+		_components.push_back(T(*this));
+	}
 
 	//! remove a node component
-	void remove_component(component::ref c);
+	void remove_component(component c);
 
 	//! paths to root
 	const ptr_array& path() const;
 
 	void traversal();
 
-	template <typename T>
-	T* find_component()
-	{
-		for (auto c : _components) {
-			T* r = static_cast<T*>(c.get());
-			if (r != nullptr) return r;
-		}
-		return nullptr;
-	}
-
+	// not sure about this
 	const class transform& transform() const { return _transform; }
 	class transform& transform() { return _transform; }
 
@@ -116,10 +114,10 @@ protected:
 	ref_array _children; //!< list of children
 	ptr_array _path; //!< path to root
 
-	component::array _components; //<! components
-
 	class transform _transform;
 
+	component::array _components; //<! components
+
     std::string _name;
 
 	// change mask
diff --git a/src/scene/include/pw/scene/transform.hpp b/src/scene/include/pw/scene/transform.hpp
index 66ee7a1..7cd98f0 100644
--- a/src/scene/include/pw/scene/transform.hpp
+++ b/src/scene/include/pw/scene/transform.hpp
@@ -5,16 +5,14 @@
 #include <pw/core/quaternion.hpp>
 #include <pw/core/vector.hpp>
 
-#include <pw/scene/component.hpp>
-
 namespace pw {
 
-class transform : public component {
+class node;
+
+class transform {
 public:
 
-	using component::component;
-
-	transform();
+	transform(node &host);
 
 	inline const matrix4x4& local() const { return _local; }
 	void set_local(const matrix4x4 &local);
@@ -22,42 +20,59 @@ public:
 	inline const matrix4x4& global() const { return _global; }
 	void set_global(const matrix4x4 &global);
 
-	inline void translate(const real_t &x, const real_t &y, const real_t &z) {
+	inline const matrix4x4& global_inverse() const { return _global_inverse; }
+
+	inline transform& translate(const real_t &x, const real_t &y, const real_t &z) {
         _local(0,3) += x;_local(1,3) += y;_local(2,3) += z;
 		update_global_from_local();
+		return *this;
 	}
 
-	inline void rotate(const quaternion& q) {
+	inline transform& set_translation(const real_t &x, const real_t &y, const real_t &z) {
+		_local(0,3) = x;_local(1,3) = y;_local(2,3) = z;
+		update_global_from_local();
+		return *this;
+	}
+
+	inline transform& rotate(const quaternion& q) {
         _local = _local * q.to_matrix();
 		update_global_from_local();
+		return *this;
 	}
 
-	inline void scale(const real_t &x, const real_t &y, const real_t &z) {
-        _local(0,0) *= x; _local(1,1) *= y; _local(2,2) *= z;
+	inline transform& set_rotation(const quaternion& q) {
+		_local = q.to_matrix();
 		update_global_from_local();
+		return *this;
 	}
 
-	inline void scale(const real_t& uniform_scale) {
-		scale(uniform_scale,uniform_scale,uniform_scale);
-	}
-
-	inline void set_translation(const real_t &x, const real_t &y, const real_t &z) {
-        _local(0,3) = x;_local(1,3) = y;_local(2,3) = z;
+	inline transform& scale(const real_t &sx, const real_t &sy, const real_t &sz) {
+		_local(0,0) *= sx; _local(1,1) *= sy; _local(2,2) *= sz;
 		update_global_from_local();
+		return *this;
 	}
 
+	inline transform& set_scale(const real_t &sx, const real_t &sy, const real_t &sz) {
+		_local(0,0) = sx; _local(1,1) = sy; _local(2,2) = sz;
+		update_global_from_local();
+		return *this;
+	}
 
-
-
-	void update(node &node);
+	inline transform& scale(const real_t& uniform_scale) {
+		return scale(uniform_scale,uniform_scale,uniform_scale);
+	}
 
 protected:
 
 	matrix4x4 _local;
 	matrix4x4 _global;
 
+	matrix4x4 _global_inverse;
+
 private:
 
+	node &_node;
+
 	//! updates the global transform from parent globals and local transform
 	void update_global_from_local();
 
@@ -65,8 +80,6 @@ private:
 	void update_local_from_global();
 };
 
-
-
 }
 
 #endif
diff --git a/src/scene/src/camera.cpp b/src/scene/src/camera.cpp
index b1325da..112584d 100644
--- a/src/scene/src/camera.cpp
+++ b/src/scene/src/camera.cpp
@@ -3,8 +3,9 @@
 
 namespace pw {
 
-camera::camera()
-	: _fov(60.0)
+camera::camera(node &host)
+	: component (host)
+	, _fov(60.0)
 	, _near_plane(0.2f)
 	, _far_plane(1000)
 {
@@ -16,6 +17,20 @@ void camera::set_projection(const matrix4x4 &projection)
 	this->_projection = projection;
 
     // recompute the simplified parameters
+
+	auto near   = _projection(3,4);
+	auto far    = _projection(3,4);
+
+//	right = (1-m14) / m11
+
+//	near   =  (1+m34)/m33;
+//	far    = -(1-m34)/m33;
+//	bottom =  (1-m24)/m22;
+//	top    = -(1+m24)/m22;
+//	left   = -(1+m14)/m11;
+//	right  =  (1-m14)/m11;
+
+//	real_t fov_raw = float( atan (top / near_)) *  * 2.0f;
 }
 
 const matrix4x4 &camera::projection() const
diff --git a/src/scene/src/component.cpp b/src/scene/src/component.cpp
index ab711d8..83dad27 100644
--- a/src/scene/src/component.cpp
+++ b/src/scene/src/component.cpp
@@ -11,8 +11,8 @@
 
 namespace pw {
 
-component::component()
-	: _node(nullptr)
+component::component(node &host)
+	: _node(host)
 {
 }
 
@@ -23,7 +23,6 @@ component::component(const component &other)
 
 component::~component()
 {
-//    if (_node != nullptr) _node->unregister_component(this);
 }
 
 bool component::enabled() const
diff --git a/src/scene/src/node.cpp b/src/scene/src/node.cpp
index 428459d..bfe57b1 100644
--- a/src/scene/src/node.cpp
+++ b/src/scene/src/node.cpp
@@ -1,11 +1,12 @@
 #include "pw/scene/transform.hpp"
 #include "pw/scene/node.hpp"
 
-#include <iostream>
+#include "pw/core/debug.hpp"
 
 namespace pw {
 
 node::node()
+	: _transform(*this)
 {
 }
 
@@ -13,7 +14,9 @@ node::node(const node &node)
 	: _children(node.children())
 	, _components(node.components())
 	, _name(node._name)
+	, _transform(*this)
 {
+//	_components.push_back(std::make_unique<transform>(*this));
 }
 
 node::ref node::clone(const unsigned short &copymode) const
@@ -31,22 +34,16 @@ void node::set_name(const std::string &name)
 	_name = name;
 }
 
-node::ref node::add_child()
+void node::add_child(node::ref c)
 {
-	// create new node
-	node::ref new_node = std::make_shared<node>();
-
 	// take parent nodepath ...
-	if (!this->is_root()) new_node->_path = this->_path;
+	c->_path = this->_path;
 
-	// add itself
-	new_node->_path.push_back(this);
+	// add current node
+	c->_path.push_back(this);
 
 	// add as child
-	_children.push_back(new_node);
-
-	// return
-	return new_node;
+	_children.push_back(c);
 }
 
 void node::remove_child(ref child_node)
@@ -72,28 +69,22 @@ node::~node()
 //
 // components
 //
-void node::add_component(component::ref new_component)
+void node::add_component(component new_component)
 {
 	// assumption is that only transform is a "singular" node
 	_components.push_back(new_component);
 }
 
-void node::remove_component(component::ref c)
+void node::remove_component(component c)
 {
 //	component::array::iterator it = _components.end();
 
-    for (component::array::iterator it = _components.begin();
+	for (component::array::iterator it = _components.begin();
          it != _components.end();
          it++)
     {
-        if (*it == c) it = _components.erase(it);
+//        if (*it == c) it = _components.erase(it);
     }
-
-
-//	while ((it = std::find(_components.begin(),_components.end(),c)) != _components.end()) {
-//		(*it)->_node = nullptr;
-//		_components.erase(it);
-//	}
 }
 
 const node::ptr_array &node::path() const
@@ -103,10 +94,11 @@ const node::ptr_array &node::path() const
 
 void node::traversal()
 {
-//	for (auto c : _components) c->visit(this);
+
 }
 
-const component::array& node::components() const
+
+const component::array &node::components() const
 {
 	return _components;
 }
diff --git a/src/scene/src/transform.cpp b/src/scene/src/transform.cpp
index 6f35881..a0d6948 100644
--- a/src/scene/src/transform.cpp
+++ b/src/scene/src/transform.cpp
@@ -3,46 +3,48 @@
 
 namespace pw {
 
-transform::transform()
+transform::transform(node &host)
+	: _node(host)
 {
 	_local.set_identity();
 	_global.set_identity();
+	_global_inverse.set_identity();
 }
 
 void transform::set_local(const matrix4x4 &local)
 {
-    // TODO need to rebuild the transforms: both -> global down and global up
-    _local = local;
-
+	_local = local;
+	update_global_from_local();
+	// TODO need to rebuild the transforms: both -> global down and global up
 }
 
 void transform::set_global(const matrix4x4 &global)
 {
 	//TODO need to rebuild **_local** from parent
 	_global = global;
-}
+	_global_inverse = global.inverse();
 
-
-void transform::update(node& node)
-{
+	update_local_from_global();
+	// TODO need to rebuild the transforms: both -> global down and global up
 }
 
 void transform::update_global_from_local()
 {
 	// update the global transform
-	if (_node && _node->parent())
-	{
-		this->_global = _node->transform()._global * _local;
+	if (_node.is_root()) {
+		this->_global = _local;
 	} else
 	{
-		this->_global = _local;
+		this->_global = _node.parent()->transform().global() * _local;
 	}
+	_global_inverse = _global.inverse();
 }
 
 void transform::update_local_from_global()
 {
+	_local = (_node.is_root()) ? _global :
+								 _node.parent()->transform().global_inverse() * _global;
 
-//	_local = this->global()
 }
 
 }
diff --git a/src/scene/tests/pwscene_test_node.cpp b/src/scene/tests/pwscene_test_node.cpp
index a3e247f..eda12bd 100644
--- a/src/scene/tests/pwscene_test_node.cpp
+++ b/src/scene/tests/pwscene_test_node.cpp
@@ -22,45 +22,52 @@ void print_node_path(pw::node::ref node) {
 
 int main(int argc,char **argv) {
 
-    using namespace pw;
+	using namespace pw;
 
-	node::ref n = std::make_shared<node>();
-	n->set_name("root");
+	auto n = std::make_shared<node>();
+	n->set_name("root-node");
 
-    // check
-    {
-		n->add_child()->set_name("node");
-    }
 
-    std::cout << "n name: " << n->name() << std::endl;
-    std::cout << "n leaf: " << n->is_leaf() << std::endl;
-    std::cout << "n root: " << n->is_root() << std::endl;
+	// add a child
+	auto c = std::make_shared<node>();
+	c->set_name("child-node");
+	n->add_child(c);
+
+	std::cout << "n name: " << n->name() << std::endl;
+	std::cout << "n leaf: " << n->is_leaf() << std::endl;
+	std::cout << "n root: " << n->is_root() << std::endl;
 
 	std::cout << "s name: " << n->children().front()->name() << std::endl;
-    std::cout << "s leaf: " << n->children()[0]->is_leaf() << std::endl;
-    std::cout << "s root: " << n->children()[0]->is_root() << std::endl;
+	std::cout << "s leaf: " << n->children().front()->is_leaf() << std::endl;
+	std::cout << "s root: " << n->children().front()->is_root() << std::endl;
 
 
-    // thats the only and most ugly way to register a component
-//    new component(n.get());
+	// thats the only and most ugly way to register a component
+	//    new component(n.get());
 
-	n->add_component(std::make_shared<transform>());
 
-    std::cout << "n components: " << n->components().size() << std::endl;
+	std::cout << "n components: " << n->components().size() << std::endl;
 
+	n->transform().set_translation(5,4,3);
+
+	std::cout << "c transform g  " << serialize::matrix(n->transform().global()) << std::endl;
+	std::cout << "c transform gi " << serialize::matrix(n->transform().global_inverse()) << std::endl;
+	std::cout << "c transform l  " << serialize::matrix(n->transform().local()) << std::endl;
+
+
+	//n->add_component_<transform>();
 
 	print_node_path((n));
 
-//	auto t = n->transform();
+	//	auto t = n->transform();
 
-//	if (t)
-        std::cout << n->transform().local()(0,0) << std::endl;
-//	else {
-//		std::cerr << "no transform?" << std::endl;
-//	}
+	//	if (t)
+//	std::cout << n->transform().local()(0,0) << std::endl;
+	//	else {
+	//		std::cerr << "no transform?" << std::endl;
+	//	}
 
 
 
-
-    return 0;
+	return 0;
 }
diff --git a/src/scene/tests/pwscene_test_traverser.cpp b/src/scene/tests/pwscene_test_traverser.cpp
index 6eb30f8..d742ba0 100644
--- a/src/scene/tests/pwscene_test_traverser.cpp
+++ b/src/scene/tests/pwscene_test_traverser.cpp
@@ -42,7 +42,7 @@ int main(int argc,char **argv) {
 
 	node::ref root(std::make_shared<node>());
 	root->set_name("root");
-	root->add_child()->set_name("sub-1");
+//	root->add_child()->set_name("sub-1");
 
 //	node::ref sub_2_1 = std::make_shared<node>("sub-2-1");
 
diff --git a/src/scripting/src/script_scene.cpp b/src/scripting/src/script_scene.cpp
index e49d4df..40f174a 100644
--- a/src/scripting/src/script_scene.cpp
+++ b/src/scripting/src/script_scene.cpp
@@ -12,6 +12,7 @@ void register_scene_function(sol::state&,sol::table &ns)
 						  sol::constructors<node()>(),
 						  "add_child",&node::add_child,
 						  "children",sol::readonly_property(&node::children),
+						  "parent",sol::readonly_property(&node::parent),
 						  "child_count",sol::readonly_property(&node::child_count),
 						  "create", []() -> std::shared_ptr<node> { return std::make_shared<node>(); },
 						  "is_leaf", sol::readonly_property(&node::is_leaf),
diff --git a/src/visual/include/pw/visual/shader.hpp b/src/visual/include/pw/visual/shader.hpp
index e522bc1..207834a 100644
--- a/src/visual/include/pw/visual/shader.hpp
+++ b/src/visual/include/pw/visual/shader.hpp
@@ -30,20 +30,20 @@ public:
 
 	bool ready() const;
 
-	shader& bind(int location,float v);
-	shader& bind(int location,matrix4x4f const & v);
-	shader& bind(int location,vector4f const & v);
+	shader& set(int location,float v);
+	shader& set(int location,matrix4x4f const & v);
+	shader& set(int location,vector4f const & v);
 
 	int uniform_location(std::string const & name) const;
 
 	template<typename T>
-	shader & bind(std::string const & name, T&& value)
+	shader & set(std::string const & name, T&& value)
 	{
 		int location = uniform_location(name);
 		if (location >= 0)
-			return bind(location, std::forward<T>(value));
+			return set(location, std::forward<T>(value));
 		else
-			debug::e() << "missing uniform: "<< name;
+			debug::e() << "missing uniform: '" << name << "'";
 		return *this;
 	}
 
diff --git a/src/visual/src/pipeline.cpp b/src/visual/src/pipeline.cpp
index 4a2458a..3d6956c 100644
--- a/src/visual/src/pipeline.cpp
+++ b/src/visual/src/pipeline.cpp
@@ -3,6 +3,8 @@
 #include "pw/core/mesh.hpp"
 #include "pw/core/timer.hpp"
 #include "pw/core/axisangle.hpp"
+#include "pw/core/serialize.hpp"
+#include "pw/core/transform_tools.hpp"
 
 #include "pw/core/debug.hpp"
 #include "pw/visual/pipeline.hpp"
@@ -17,6 +19,8 @@ class command {
 
 };
 
+
+
 class mesh_command : command {
 
 //	shader
@@ -46,10 +50,13 @@ struct triangle_renderer
 
     void setup()
     {
+
+		const float z_val = -5.f;
+
         mesh::vertex3array_t vertices = {
-			 { 0.0f,  0.5f,  0.0f} // 0
-			,{ 0.5f, -0.5f,  0.0f} // 1
-			,{-0.5f, -0.5f,  0.0f} // 2
+			 { 0.0f,  0.5f,  z_val} // 0
+			,{ 0.5f, -0.5f,  z_val} // 1
+			,{-0.5f, -0.5f,  z_val} // 2
         };
 
 		// actual indices
@@ -59,71 +66,17 @@ struct triangle_renderer
         amesh.set_vertices(vertices);
 
 		amesh_renderer.create(amesh);
-#if 0
-
-
-        size_t vertex_size_bytes = amesh.vertices().size() * sizeof(mesh::vertex3array_t::value_type);
-        size_t vertex_stride = amesh.vertices().front().size();
-
-        debug::d() << 9 * sizeof(mesh::vertex3array_t::value_type::value_type) << " "
-                   << vertex_size_bytes;
-
-
-
-//        sizeof(mesh::vertex3array_t::value_type)
-//        9 * sizeof(mesh::vertex3array_t::value_type::value_type)
-
-        glGenBuffers(1, &vbo);
-        glBindBuffer(GL_ARRAY_BUFFER, vbo);
-        glBufferData(GL_ARRAY_BUFFER, vertex_size_bytes , amesh.vertices().data(), GL_STATIC_DRAW);
-
-        glGenVertexArrays(1,&vao);
-        glBindVertexArray(vao);
-
-        glEnableVertexAttribArray(0);
-        glBindBuffer(GL_ARRAY_BUFFER, vbo);
-        glVertexAttribPointer(0, vertex_stride, GL_FLOAT, GL_FALSE, 0, nullptr);
-
-
-
-        GLuint vs = glCreateShader(GL_VERTEX_SHADER);
-        glShaderSource(vs, 1, &vertex_shader, NULL);
-        glCompileShader(vs);
-        GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
-        glShaderSource(fs, 1, &fragment_shader, NULL);
-        glCompileShader(fs);
-
-        shader_programme = glCreateProgram();
-        glAttachShader(shader_programme, fs);
-        glAttachShader(shader_programme, vs);
-        glLinkProgram(shader_programme);
-#endif
-
-		const char* vertex_shader = R"(
-				#version 400
-				in vec3 vp;
-				void main() {
-					gl_Position = vec4(vp, 1.0);
-				}
-				)";
-
-		const char *fragment_shader = R"(
-				#version 400
-				uniform vec4 input_color = vec4(1.0, 0.0, 0.0, 1.0);
-				out vec4 frag_colour;
-				void main() {
-				  frag_colour = input_color;
-				})";
-
-
 
 		const char* vertex_shader_2 = R"(
 				#version 400
-                uniform mat4 model_mat;
-				uniform mat4 view_mat = mat4
+				uniform mat4 model;
+				uniform mat4 view;
+				uniform mat4 projection;
+
 				in vec3 vertex_p;
+
 				void main() {
-                    gl_Position = model_mat * vec4(vertex_p, 1.0);
+					gl_Position = projection * view * model * vec4(vertex_p, 1.0);
 				}
 				)";
 
@@ -136,7 +89,7 @@ struct triangle_renderer
 				})";
 
         shader_p.set_source(vertex_shader_2,shader::vertex);
-        shader_p.set_source(fragment_shader,shader::fragment);
+		shader_p.set_source(fragment_shader_2,shader::fragment);
 
 		if (!shader_p.build())
 			exit(-1);
@@ -148,19 +101,34 @@ struct triangle_renderer
 
         shader_p.use();
 
-		static float v = 0.0f;
-		v+= 0.01f;
-		if (v>1.0f) v = 0.0f;
-		vector4f test({0.5f,1-v,v,1.0f});
+		auto v_col = ping_pong(static_cast<float>(timer::now()),1.0f);
+
+		vector4f col({0.5f,1-v_col,v_col,1.0f});
 
         matrix4x4f model_mat; model_mat.set_identity();
 
-        axisangle rot(vector3::right(),v);
+		auto v_angle = ping_pong(static_cast<float>(timer::now()),::pw::pi<float>());
+
+		axisangle rot(vector3::forward(),v_angle);
         model_mat = rot.to_matrix();
 
+
+		matrix4x4f view_mat = transform_tools<float>::look_at(vector3({0,0,0}),
+															  vector3::forward(),
+															  vector3::up());
+
+		matrix4x4f proj_mat = transform_tools<float>::perspective_projection(deg_to_rad(45.f),
+																			 1.3f,
+																			 0.2f,1000.f);
+
+//		debug::d() << serialize::matrix(proj_mat);
+
+
         // highly inefficient - should be cached -
-		shader_p.bind("input_color",test);
-        shader_p.bind("model_mat",model_mat);
+		shader_p.set("input_color",col);
+		shader_p.set("model",model_mat);
+		shader_p.set("view",view_mat);
+		shader_p.set("projection",proj_mat);
 
 		amesh_renderer.draw();
 
diff --git a/src/visual/src/shader.cpp b/src/visual/src/shader.cpp
index 3c55f0a..a2f9ac0 100644
--- a/src/visual/src/shader.cpp
+++ b/src/visual/src/shader.cpp
@@ -180,12 +180,12 @@ bool shader::ready() const
 	return _impl->is_valid();
 }
 
-shader &shader::bind(int location, const vector4f &v)
+shader &shader::set(int location, const vector4f &v)
 {
 	_impl->bind(location,v); return *this;
 }
 
-shader &shader::bind(int location, const matrix4x4f &v)
+shader &shader::set(int location, const matrix4x4f &v)
 {
     _impl->bind(location,v); return *this;
 }