diff --git a/include/poly.h b/include/poly.h
index 39e9d81..7fa226c 100755
--- a/include/poly.h
+++ b/include/poly.h
@@ -2,13 +2,14 @@
 #define _POLY_H
 
 #include "vec.h"
+#include "spoly.h"
 #include "color.h"
 #include <vector>
 #include <string>
 
 using namespace std;
 
-class Poly {
+class Poly : SPoly {
 	private:
 		std::vector<Vec*> initpoints;
 		int size;
diff --git a/include/vec.h b/include/vec.h
index 33a6232..fe8fbe3 100755
--- a/include/vec.h
+++ b/include/vec.h
@@ -1,8 +1,13 @@
 #ifndef _VEC_H
 #define _VEC_H
 
+#include "spoly.h"
+
 #include <string>
+#include <vector>
 class Vec {
+	private:
+		std::vector<SPoly*> faces;
 	public:
 		float c[3];
 
@@ -26,5 +31,6 @@
 		void print();
 		Vec* clone();
 		void vardump(std::string whitespace);
+		void registerFace(SPoly* p);
 };
 #endif
diff --git a/sources/main.cpp b/sources/main.cpp
index b0f8f3a..0748e85 100755
--- a/sources/main.cpp
+++ b/sources/main.cpp
@@ -272,7 +272,7 @@
 	printf("imported %s : %d faces\n", modelfile, myModel->numFaces());
 	//myModel->setCenter(cen);
 
-	//myModel->vardump("");
+	myModel->vardump("");
 
 	//light info
 	Vec dir0(0.0f, 0.0f, 0.0f);
diff --git a/sources/poly.cpp b/sources/poly.cpp
index 6f3f102..cad63e3 100755
--- a/sources/poly.cpp
+++ b/sources/poly.cpp
@@ -27,7 +27,7 @@
 	color = _color.clone();
 
 	for (std::vector<Vec*>::size_type i = 0 ; i < _points.size(); i++ ) {
-		initpoints.push_back(_points.at(i));
+		addPoint(_points.at(i));
 	}
 
 	setCenter(calcCenter());
@@ -44,7 +44,7 @@
 * the polygon is located
 */
 void Poly::setCenter(Vec c) {
-  position = c.clone();
+	position = c.clone();
 }
 
 /*
@@ -112,45 +112,31 @@
 }
 
 Vec Poly::rotate_xyz(Vec out) {
-  Vec ret = rotate_x(out);
-  ret = rotate_y(ret);
-  ret = rotate_z(ret);
-  return ret;
+	Vec ret = rotate_x(out);
+	ret = rotate_y(ret);
+	ret = rotate_z(ret);
+	return ret;
 }
 
 void Poly::draw() {
-  unsigned int vcount = initpoints.size();
+	unsigned int vcount = initpoints.size();
 
-  //draw Poly
-  glBegin (GL_POLYGON);
+	glBegin (GL_POLYGON);
+
 	for ( std::vector<Vec*>::size_type i = 0; i < vcount; i++ ) {
-	  Vec cur =  rotate_xyz(*initpoints.at(i) - *position);
-	  //normal
-	  Vec prev = rotate_xyz(*initpoints.at((i-1+vcount)%vcount) - *position);
-	  Vec next = rotate_xyz(*initpoints.at((i+1) % vcount) - *position);
-	  prev = prev - cur; 
-	  next = next - cur; 
-	  glNormal3fv(prev.cross(next).normalize().c);
+		Vec cur =  rotate_xyz(*initpoints.at(i) - *position);
+		//normal
+		Vec prev = rotate_xyz(*initpoints.at((i-1+vcount)%vcount) - *position);
+		Vec next = rotate_xyz(*initpoints.at((i+1) % vcount) - *position);
+		prev = prev - cur; 
+		next = next - cur; 
+		glNormal3fv(prev.cross(next).normalize().c);
 
-	  color->drawColor();
-	  glVertex3fv((*position + cur).c);
+		color->drawColor();
+		glVertex3fv((*position + cur).c);
 	}
-  glEnd();
 
-  //draw Normals
-/*  for ( std::vector<Vec*>::size_type i = 0; i < vcount; i++ ) {	
-	Vec cur =  rotate_xyz(*initpoints.at(i) - *position);	
-	//previous and next Vector of current Vector to calculate normal
-	Vec prev = rotate_xyz(*initpoints.at((i-1+vcount)%vcount) - *position);
-	Vec next = rotate_xyz(*initpoints.at((i+1) % vcount) - *position);	
-	prev = prev - cur; 
-	next = next - cur; 
-	
-	glBegin (GL_LINES); 
-	glVertex3fv((cur + *position).c);
-	glVertex3fv((cur + prev.cross(next).normalize() + *position).c);
 	glEnd();
-  }*/
 }
 
 int Poly::numPoints() {
@@ -158,18 +144,20 @@
 }
 
 void Poly::vardump(std::string whitespace) {
-  printf("%sPoly(%d points, center: [%f, %f, %f], rotation: [%f, %f, %f], color: [%f, %f, %f])\n",
-		 whitespace.c_str(), initpoints.size(), 
-		 position->x(), position->y(), position->z(),
-		 rotation->x(), rotation->y(), rotation->z(), 
-		 color->r, color->g, color->b);
+	printf("%sPoly(%d points, center: [%f, %f, %f], rotation: [%f, %f, %f], color: [%f, %f, %f])\n",
+		whitespace.c_str(), initpoints.size(), 
+		position->x(), position->y(), position->z(),
+		rotation->x(), rotation->y(), rotation->z(), 
+		color->r, color->g, color->b
+	);
 
-  for (std::vector<Vec*>::size_type i = 0 ; i < initpoints.size(); i++ ) {
-	initpoints.at(i)->vardump(whitespace+"	");
-  }
+	for (std::vector<Vec*>::size_type i = 0 ; i < initpoints.size(); i++ ) {
+		initpoints.at(i)->vardump(whitespace+"	");
+	}
 }
 
 void Poly::addPoint(Vec* p) {
+	p->registerFace(this);
 	initpoints.push_back(p);
 }
 
diff --git a/sources/vec.cpp b/sources/vec.cpp
index c56c745..2874b30 100755
--- a/sources/vec.cpp
+++ b/sources/vec.cpp
@@ -88,4 +88,9 @@
 
 void Vec::vardump(std::string whitespace) {
 	printf("%sVec(%f, %f, %f)\n", whitespace.c_str(), c[0], c[1], c[2]);
+	printf("%s	linked to %d faces\n", whitespace.c_str(), faces.size());
+}
+
+void Vec::registerFace(SPoly* p) {
+	faces.push_back(p);
 }