diff --git a/IndoorMap.pro b/IndoorMap.pro
index 7103d93..51964b2 100644
--- a/IndoorMap.pro
+++ b/IndoorMap.pro
@@ -43,7 +43,10 @@ SOURCES += \
     params/MetaEditModel.cpp \
     mapview/2D/MapView2D.cpp \
     misc/LINTView.cpp \
-    mapview/3DNavMesh/QNavMeshSettings.cpp
+    mapview/3DNavMesh/QNavMeshSettings.cpp \
+    mapview/3D/misc/Cube.cpp \
+    mapview/3D/misc/Shader.cpp \
+	mapview/3D/misc/Window.cpp
 
 
 HEADERS  += MainWindow.h \
@@ -170,7 +173,12 @@ HEADERS  += MainWindow.h \
     mapview/3DNavMesh/NavMeshView.h \
     mapview/3DNavMesh/NavMeshRenderer.h \
     mapview/3DNavMesh/NavMeshModel.h \
-    mapview/3DNavMesh/QNavMeshSettings.h
+    mapview/3DNavMesh/QNavMeshSettings.h \
+    fixC11.h \
+    mapview/3D/misc/Shader.h \
+    mapview/3D/misc/Camera.h \
+    mapview/3D/misc/Renderable3D.h \
+	mapview/3D/misc/Window.h
 
 
 FORMS    += MainWindow.ui
diff --git a/MainController.cpp b/MainController.cpp
index 7843b7d..6841ed4 100644
--- a/MainController.cpp
+++ b/MainController.cpp
@@ -1,3 +1,5 @@
+#include "fixC11.h"
+
 #include "MainController.h"
 
 #include "MainWindow.h"
@@ -102,7 +104,8 @@ MainController::MainController() {
 	//mapModel->load("/apps/map24b.xml");
 	//mapModel->load("/apps/SHL41.xml");
 
-	mapModel->load("/mnt/vm/paper/diss/data/maps/SHL41_nm.xml");
+	//mapModel->load("/mnt/vm/paper/diss/data/maps/SHL41_nm.xml");
+	mapModel->load("/apps/paper/diss/data/maps/SHL41_nm.xml");
 
 	//mapModel->load("/apps/paper/diss/data/maps/map_elevator2.xml");
 	//mapModel->load("/apps/paper/diss/data/maps/map_issue6.xml");
diff --git a/MainController.h b/MainController.h
index 6a1acd2..28cdbd4 100644
--- a/MainController.h
+++ b/MainController.h
@@ -1,6 +1,8 @@
 #ifndef MAINCONTROLLER_H
 #define MAINCONTROLLER_H
 
+#include "fixC11.h"
+
 #include <QObject>
 #include <QModelIndex>
 #include "MainWindow.h"
diff --git a/MainWindow.cpp b/MainWindow.cpp
index 224f3c4..8598fab 100644
--- a/MainWindow.cpp
+++ b/MainWindow.cpp
@@ -1,3 +1,5 @@
+#include "fixC11.h"
+
 #include "MainWindow.h"
 #include "ui_MainWindow.h"
 
diff --git a/MainWindow.h b/MainWindow.h
index 2314a1f..35fe496 100644
--- a/MainWindow.h
+++ b/MainWindow.h
@@ -1,6 +1,8 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
+#include "fixC11.h"
+
 #include <QMainWindow>
 
 class MapView2D;
diff --git a/UIHelper.h b/UIHelper.h
index 6bf0f0f..909c7e7 100644
--- a/UIHelper.h
+++ b/UIHelper.h
@@ -1,6 +1,8 @@
 #ifndef UIHELPER_H
 #define UIHELPER_H
 
+#include "fixC11.h"
+
 #include <QImage>
 #include <QPainter>
 #include <QRgb>
diff --git a/fixC11.h b/fixC11.h
new file mode 100644
index 0000000..1db03ca
--- /dev/null
+++ b/fixC11.h
@@ -0,0 +1,60 @@
+#ifndef FIXC11_H
+#define FIXC11_H
+
+#ifdef ANDROID
+
+#include <cmath>
+#include <sstream>
+#include <cstdio>
+
+namespace std {
+
+	//template <typename T> T sqrt(const T val) {return ::sqrt(val);}
+
+
+	//}
+
+	template <typename T> inline string to_string(const T val) {
+		stringstream ss;
+		ss << val;
+		return ss.str();
+	}
+
+	template <typename T> inline T round(const T val) {
+		return ::round(val);
+	}
+
+	// http://stackoverflow.com/questions/19478687/no-member-named-stoi-in-namespace-std
+	  inline  int stoi(const std::string& str) {
+		   std::istringstream is(str);
+		   int val; is >> val; return val;
+	   }
+
+	   // analog zu oben
+	   inline float stof(const std::string& str) {
+		   std::istringstream is(str);
+		   float val; is >> val; return val;
+	   }
+
+	   // analog zu oben
+	   inline double stod(const std::string& str) {
+		   std::istringstream is(str);
+		   double val; is >> val; return val;
+	   }
+
+	   // analog zu oben
+	   inline uint64_t stol(const std::string& str) {
+		   std::istringstream is(str);
+		   uint64_t val; is >> val; return val;
+	   }
+
+//	   inline int sprintf(char* str, const char * format, ...) {
+//		   //return ::sprintf(str, format, ...);
+//		   return 0;
+//	   }
+
+}
+
+#endif
+
+#endif // FIXC11_H
diff --git a/main.cpp b/main.cpp
index 2dc80b9..e57c1a0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,3 +1,5 @@
+#include "fixC11.h"
+
 #include "MainController.h"
 #include <QApplication>
 
diff --git a/mapview/2D/MapView2D.cpp b/mapview/2D/MapView2D.cpp
index 9a2d2ac..7c47337 100644
--- a/mapview/2D/MapView2D.cpp
+++ b/mapview/2D/MapView2D.cpp
@@ -1,3 +1,5 @@
+#include "../../fixC11.h"
+
 #include "MapView2D.h"
 
 #include <QPainter>
diff --git a/mapview/2D/MapView2D.h b/mapview/2D/MapView2D.h
index e05e21e..bd9cbd0 100644
--- a/mapview/2D/MapView2D.h
+++ b/mapview/2D/MapView2D.h
@@ -4,6 +4,8 @@
 #include <QWidget>
 #include <QOpenGLWidget>
 
+#include "../../fixC11.h"
+
 #include "Scaler.h"
 class MapModel;
 class MV2DElement;
diff --git a/mapview/2D/tools/Tool.h b/mapview/2D/tools/Tool.h
index f74cc04..f8fb2ad 100644
--- a/mapview/2D/tools/Tool.h
+++ b/mapview/2D/tools/Tool.h
@@ -5,6 +5,8 @@
 #include <QMouseEvent>
 #include <QObject>
 
+#include "../../../fixC11.h"
+
 #include "../Painter.h"
 
 class MapView2D;
diff --git a/mapview/2D/tools/Tools.h b/mapview/2D/tools/Tools.h
index caa8332..4d3a1df 100644
--- a/mapview/2D/tools/Tools.h
+++ b/mapview/2D/tools/Tools.h
@@ -2,6 +2,7 @@
 #define TOOLS_H
 
 #include <vector>
+#include "../../../fixC11.h"
 #include "Tool.h"
 
 /**
diff --git a/mapview/3D/MV3DElement.h b/mapview/3D/MV3DElement.h
index b27f14b..3cc62ec 100644
--- a/mapview/3D/MV3DElement.h
+++ b/mapview/3D/MV3DElement.h
@@ -2,12 +2,13 @@
 #define MV3DELEMENT_H
 
 #include "MapView3D.h"
+#include "misc/Renderable3D.h"
 
 /**
  * represents one drawable
  * element shown within the MapView3D
  */
-class MV3DElement {
+class MV3DElement : public Renderable3D {
 
 public:
 
@@ -16,8 +17,8 @@ public:
 
 public:
 
-	/** repaint me */
-	virtual void paintGL() = 0;
+	/** OLD: repaint me */
+	//virtual void paintGL() = 0;
 
 	/** is this a transparent element? */
 	virtual bool isTransparent() const = 0;
diff --git a/mapview/3D/MV3DElementAccessPoint.h b/mapview/3D/MV3DElementAccessPoint.h
index 0634e7d..03b8aba 100644
--- a/mapview/3D/MV3DElementAccessPoint.h
+++ b/mapview/3D/MV3DElementAccessPoint.h
@@ -22,11 +22,11 @@ protected:
 
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		Cube cube(ap->getPos(f), 0.25);
-		glColor3f(0,0,1);
-		cube.paintGL();
+		cube.setColor(0,0,1);
+		cube.render(rs);
 
 	}
 
diff --git a/mapview/3D/MV3DElementElevator.h b/mapview/3D/MV3DElementElevator.h
index 0ece148..e9f001f 100644
--- a/mapview/3D/MV3DElementElevator.h
+++ b/mapview/3D/MV3DElementElevator.h
@@ -24,18 +24,16 @@ public:
 	}
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		const Point3 pos(e->center.x, e->center.y, f->getStartingZ() + e->height_m/2);
 		const Point3 size(e->width/2, e->depth/2, e->height_m/2.0001);		// z-fighting
 		const Point3 rot(0,0,e->rotation * 180 / M_PI);
 
-		// fill color
-		glColor3f(0.2, 0.2, 0.2);
-
 		// build
 		Cube cube(pos, size, rot);
-		cube.paintGL();
+		cube.setColor(0.2, 0.2, 0.2);
+		cube.render(rs);
 
 	}
 
diff --git a/mapview/3D/MV3DElementFingerprintLocation.h b/mapview/3D/MV3DElementFingerprintLocation.h
index 9b15232..ff8eda3 100644
--- a/mapview/3D/MV3DElementFingerprintLocation.h
+++ b/mapview/3D/MV3DElementFingerprintLocation.h
@@ -23,11 +23,11 @@ protected:
 
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		Cube cube(fpl->getPosition(*f), 0.15);
-		glColor3f(1,0,1);
-		cube.paintGL();
+		cube.setColor(1,0,1);
+		cube.render(rs);
 
 	}
 
diff --git a/mapview/3D/MV3DElementFloorObstacleDoor.h b/mapview/3D/MV3DElementFloorObstacleDoor.h
index 82ea3bf..e9add59 100644
--- a/mapview/3D/MV3DElementFloorObstacleDoor.h
+++ b/mapview/3D/MV3DElementFloorObstacleDoor.h
@@ -23,7 +23,7 @@ public:
 	}
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		const Point2 from = fo->from;
 		const Point2 to = fo->to;
@@ -44,12 +44,10 @@ public:
 		const Point3 size(sx, sy, sz);
 		const Point3 rot(0,0,deg);
 
-		// fill color
-		glColor3f(0.395, 0.263, 0.129);
-
 		// build
 		Cube cube(pos, size, rot);
-		cube.paintGL();
+		cube.setColor(0.395, 0.263, 0.129);
+		cube.render(rs);
 
 		//glColor3f(0.4, 0.4, 0.4);
 		//Plane p(fo->from, fo->to, f->atHeight, fo->height);
diff --git a/mapview/3D/MV3DElementFloorObstacleWall.h b/mapview/3D/MV3DElementFloorObstacleWall.h
index 7080f62..a3435f2 100644
--- a/mapview/3D/MV3DElementFloorObstacleWall.h
+++ b/mapview/3D/MV3DElementFloorObstacleWall.h
@@ -5,6 +5,8 @@
 #include <Indoor/math/Math.h>
 
 #include "misc/Cube.h"
+#include "misc/Window.h"
+
 #include "MV3DElement.h"
 
 
@@ -37,7 +39,7 @@ protected:
 		Wall(const Point2 from, const Point2 to, const float thickness_m, const Floorplan::Material mat, float atHeight, float height) :
 			from(from), to(to), thickness_m(thickness_m), mat(mat), atHeight(atHeight), height(height) {;}
 
-		void paintGL() {
+		void render(const RenderSettings& rs) {
 
 			const float rad = -std::atan2(to.y - from.y, to.x - from.x);
 			const float deg = rad * 180 / M_PI;
@@ -50,154 +52,27 @@ protected:
 			const Point3 pos(cen2.x, cen2.y, atHeight + height/2);
 
 			// div by 2.01 to prevent overlapps and z-fi
-			const float sx = from.getDistance(to) / 2.01f;
-			const float sy = thickness_m / 2.01f;
-			const float sz = height / 2.01f;	// prevent overlaps
+			const float sx = from.getDistance(to) / 2.02f;
+			const float sy = thickness_m / 2.02f;
+			const float sz = height / 2.02f;				// prevent overlaps
 			const Point3 size(sx, sy, sz);
 			const Point3 rot(0,0,deg);
 
-			// fill color
-			if (mat == Floorplan::Material::CONCRETE) {
-				glColor3f(0.5, 0.5, 0.5);
-			} else {
-				glColor3f(0.75, 0.75, 0.75);
-			}
-
 			// build
 			Cube cube(pos, size, rot);
-			cube.paintGL();
-
-
-			/*
-			float y1 = atHeight;
-			float y2 = atHeight + height;
-
-
-			const Point2 p01 = from + dirPerp * w;
-			const Point2 p02 = from - dirPerp * w;
-			const Point2 p03 = to - dirPerp * w;
-			const Point2 p04 = to + dirPerp * w;
-
-			// fill the wall
 			if (mat == Floorplan::Material::CONCRETE) {
-				glColor3f(0.5, 0.5, 0.5);
+				cube.setColor(0.5, 0.5, 0.5);
 			} else {
-				glColor3f(0.75, 0.75, 0.75);
+				cube.setColor(0.75, 0.75, 0.75);
 			}
+			cube.render(rs);
 
-			auto renderQuad = [&] (const Point2 p1, const Point2 p2) {
-				glVertex3f(p1.x, y1, p1.y);
-				glVertex3f(p2.x, y1, p2.y);
-				glVertex3f(p2.x, y2, p2.y);
-				glVertex3f(p1.x, y2, p1.y);
-			};
-
-			glDisable(GL_CULL_FACE);
-			glBegin(GL_QUADS);
-				//glNormal3f(n.x, n.y, n.z);
-
-				// short
-				renderQuad(p01, p02);
-				renderQuad(p03, p04);
-
-				// long
-				renderQuad(p02, p03);
-				renderQuad(p04, p01);
-
-				//glVertex3f(p1.x, p1.y, p1.z);
-				//glVertex3f(p2.x, p2.y, p2.z);
-				//glVertex3f(p3.x, p3.y, p3.z);
-				//glVertex3f(p4.x, p4.y, p4.z);
-			glEnd();
-			glBegin(GL_CULL_FACE);
-
-
-			*/
-
-
-/*
-			// polygon edges
-			Point3 p1 = Point3(from.x, y1, from.y);
-			Point3 p2 = Point3(to.x, y1, to.y);
-			Point3 p3 = Point3(to.x, y2, to.y);
-			Point3 p4 = Point3(from.x, y2, from.y);
-
-			// calculate normal
-//			Point3 v1 = p2-p1;
-//			Point3 v2 = p3-p1;
-//			Point3 n = cross(v1, v2);
-//			n/=n.length();
-			Point3 n = Math::normal(p2-p1, p3-p1);
-
-			// align normals to virtual viewport
-			Point3 view(99,99,99);
-			if ((view-n).length() > (view+n).length()) {n = -n;}
-
-
-
-			glDisable(GL_CULL_FACE);
-			glBegin(GL_QUADS);
-				glNormal3f(n.x, n.y, n.z);
-				glVertex3f(p1.x, p1.y, p1.z);
-				glVertex3f(p2.x, p2.y, p2.z);
-				glVertex3f(p3.x, p3.y, p3.z);
-				glVertex3f(p4.x, p4.y, p4.z);
-			glEnd();
-			glEnable(GL_CULL_FACE);
-
-			*/
 		}
 
 
 	};
 
-	struct Window {
-
-		Point2 from;
-		Point2 to;
-		float atHeight;
-		float height;
-
-		Window(const Point2 from, const Point2 to, float atHeight, float height) :
-			from(from), to(to), atHeight(atHeight), height(height) {;}
-
-		void paintGL() {
-
-			float y1 = atHeight;
-			float y2 = atHeight + height;
-
-			// polygon edges
-			Point3 p1 = Point3(from.x, y1, from.y);
-			Point3 p2 = Point3(to.x, y1, to.y);
-			Point3 p3 = Point3(to.x, y2, to.y);
-			Point3 p4 = Point3(from.x, y2, from.y);
-
-			// calculate normal
-			Point3 n = Math::normal(p2-p1, p3-p1);
-
-			// align normals to virtual viewport
-			Point3 view(99,99,99);
-			if ((view-n).length() > (view+n).length()) {n = -n;}
-
-			glColor4f(0.75, 0.85, 1.0, 0.35);
-			glEnable(GL_BLEND);
-			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-			glDisable(GL_CULL_FACE);
-			glBegin(GL_QUADS);
-				glNormal3f(n.x, n.y, n.z);
-				glVertex3f(p1.x, p1.y, p1.z);
-				glVertex3f(p2.x, p2.y, p2.z);
-				glVertex3f(p3.x, p3.y, p3.z);
-				glVertex3f(p4.x, p4.y, p4.z);
-			glEnd();
-			glEnable(GL_CULL_FACE);
-			glDisable(GL_BLEND);
-
-		}
-
-	};
-
-	struct Handrail {
+	struct Handrail : public Renderable3D {
 
 		Point2 from;
 		Point2 to;
@@ -207,7 +82,7 @@ protected:
 		Handrail(const Point2 from, const Point2 to, float atHeight, float height) :
 			from(from), to(to), atHeight(atHeight), height(height) {;}
 
-		void paintGL() {
+		void render(const RenderSettings& rs) override {
 
 			float y1 = atHeight;
 			float y2 = atHeight + height;
@@ -219,6 +94,10 @@ protected:
 			Point3 p3 = Point3(from.x, y2, from.y);
 			Point3 p4 = Point3(to.x, y2, to.y);
 
+			/*
+
+			TODO_GL
+
 			glDisable(GL_LIGHTING);
 			glBegin(GL_LINES);
 
@@ -252,27 +131,29 @@ protected:
 			glEnd();
 			glEnable(GL_LIGHTING);
 
+			*/
+
 		}
 
 	};
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		if (fo->material == Floorplan::Material::GLASS) {
 
 			Window win(fo->from, fo->to, f->atHeight, f->height);
-			win.paintGL();
+			win.render(rs);
 
 		} else if (fo->type == Floorplan::ObstacleType::WALL) {
 
 			Wall wall(fo->from, fo->to, fo->thickness_m, fo->material, f->atHeight, f->height);
-			wall.paintGL();
+			wall.render(rs);
 
 		} else if (fo->type == Floorplan::ObstacleType::HANDRAIL) {
 
 			Handrail rail(fo->from, fo->to, f->atHeight, 1.0);
-			rail.paintGL();
+			rail.render(rs);
 
 		}
 
diff --git a/mapview/3D/MV3DElementFloorOutline.h b/mapview/3D/MV3DElementFloorOutline.h
index 5ed6747..82a1d26 100644
--- a/mapview/3D/MV3DElementFloorOutline.h
+++ b/mapview/3D/MV3DElementFloorOutline.h
@@ -9,6 +9,7 @@
 #include "../../lib/gpc/gpc.h"
 #include "misc/Polygon.h"
 
+#include "misc/Shader.h"
 
 class MV3DElementFloorOutline : public MV3DElement {
 
@@ -37,15 +38,60 @@ protected:
 
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		rebuildIfNeeded();
 
+		rs.shader->bind();
+
+		glDisable(GL_CULL_FACE);
+
+		QMatrix4x4 mat;
+		rs.shader->setModelMatrix(mat);
+
 		for (auto& it : elements) {
 
 			//Polygon& pol = it.second->pol;
 			std::vector<std::vector<Point3>>& trias = it.second->trias;
 
+			if (it.first == "outdoor") {
+				rs.shader->setColor(0.0, 0.5, 0.0);
+			} else {
+				rs.shader->setColor(0.2, 0.2, 0.2);
+			}
+
+			std::vector<float> values;
+			std::vector<float> normals;
+
+			for (const std::vector<Point3>& tria : trias) {
+				for (int i = 2; i < tria.size(); ++i) {
+
+					const Point3 p1 = tria[i-2];
+					const Point3 p2 = tria[i-1];
+					const Point3 p3 = tria[i-0];
+
+					values.push_back(p1.x);		values.push_back(p1.y);		values.push_back(p1.z);
+					values.push_back(p2.x);		values.push_back(p2.y);		values.push_back(p2.z);
+					values.push_back(p3.x);		values.push_back(p3.y);		values.push_back(p3.z);
+
+					normals.push_back(0);		normals.push_back(1);		normals.push_back(0);
+					normals.push_back(0);		normals.push_back(1);		normals.push_back(0);
+					normals.push_back(0);		normals.push_back(1);		normals.push_back(0);
+
+				}
+			}
+
+			rs.shader->setVertices(values.data());
+			rs.shader->setNormals(normals.data());
+
+			glDrawArrays(GL_TRIANGLES, 0, values.size() / 3);
+			rs.shader->unsetVertices();
+			rs.shader->unsetNormals();
+
+			/*
+
+			TODO_GL
+
 			if (it.first == "outdoor") {
 				glColor3f(0.0, 0.5, 0.0);
 			} else {
@@ -63,8 +109,14 @@ protected:
 			}
 			glEnable(GL_CULL_FACE);
 
+			*/
+
 		}
 
+		glEnable(GL_CULL_FACE);
+
+		rs.shader->release();
+
 	}
 
 	void rebuildIfNeeded() {
diff --git a/mapview/3D/MV3DElementRegistrationPoint.h b/mapview/3D/MV3DElementRegistrationPoint.h
index 612f477..ab746ec 100644
--- a/mapview/3D/MV3DElementRegistrationPoint.h
+++ b/mapview/3D/MV3DElementRegistrationPoint.h
@@ -21,11 +21,11 @@ protected:
 
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		Cube cube(reg->posOnMap_m, 0.5);
-		glColor3f(0,0,0);
-		cube.paintGL();
+		cube.setColor(0,0,0);
+		cube.render(rs);
 
 	}
 
diff --git a/mapview/3D/MV3DElementStair.h b/mapview/3D/MV3DElementStair.h
index d6b327c..76e8036 100644
--- a/mapview/3D/MV3DElementStair.h
+++ b/mapview/3D/MV3DElementStair.h
@@ -22,10 +22,12 @@ protected:
 
 
 	/** repaint me */
-	void paintGL() override {
+	void render(const RenderSettings& rs) override {
 
 		glDisable(GL_CULL_FACE);
 
+		/*
+		TODO_GL
 		//glColor3f(1.0, 0.55, 0.55);
 		glColor3f(0.3, 0.3, 0.3);
 		glBegin(GL_QUADS);
@@ -55,7 +57,7 @@ protected:
 		glEnd();
 
 		glEnable(GL_CULL_FACE);
-
+		*/
 	}
 
 	bool isTransparent() const override {
diff --git a/mapview/3D/MapView3D.cpp b/mapview/3D/MapView3D.cpp
index 245503d..e896613 100644
--- a/mapview/3D/MapView3D.cpp
+++ b/mapview/3D/MapView3D.cpp
@@ -1,5 +1,6 @@
-#include "MapView3D.h"
+#include "../../fixC11.h"
 
+#include "MapView3D.h"
 
 #include "../model/MapModelElement.h"
 #include "../model/MapModel.h"
@@ -10,11 +11,11 @@
 #include "../3DNavMesh/NavMeshModel.h"
 #include "../3DNavMesh/NavMeshRenderer.h"
 
-MapView3D::MapView3D(QWidget *parent) : QGLWidget(parent) {
+MapView3D::MapView3D(QWidget *parent) : QOpenGLWidget(parent) {
 
-	rot.x = 45;
+	rot.x = 0;
 	rot.y = 0;
-	rot.z = 45;
+	rot.z = 0;
 
 	center.x = 0;
 	center.y = 0;
@@ -33,9 +34,10 @@ void MapView3D::initializeGL() {
 
 	//setFormat(QGLFormat(QGL::SampleBuffers));
 
-	QGLWidget::initializeGL();
+	QOpenGLWidget::initializeGL();
 
 	glCullFace(GL_FRONT);
+	glFrontFace(GL_CCW);
 	//glDisable(GL_CULL_FACE);
 	glEnable(GL_CULL_FACE);
 
@@ -46,6 +48,10 @@ void MapView3D::initializeGL() {
 //	glEnable(GL_MULTISAMPLE);
 //	glEnable(GL_LINE_SMOOTH);
 
+	/*
+
+	TODO_GL
+
 	glEnable(GL_LIGHTING);
 	glEnable(GL_LIGHT0);
 	glEnable(GL_LIGHT1);
@@ -73,8 +79,11 @@ void MapView3D::initializeGL() {
 //	glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
 //	glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
 
+	*/
+
 	// background color
-	qglClearColor(Qt::white);
+	//glClearColor(Qt::white);
+	glClearColor(1,1,1,1);
 
 }
 
@@ -82,14 +91,14 @@ void MapView3D::paintGL() {
 
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+	/*
+
+	TODO_GL
+
 	glLoadIdentity();
 
-
-
-
 	glScalef(+1, -1, +1);
 
-
 	// 3) scale
 	glScalef(scale.x, scale.y, scale.z);	
 
@@ -113,6 +122,8 @@ void MapView3D::paintGL() {
 //	// 1) translate into center
 //	glTranslatef(tra.x, tra.y, tra.z);
 
+	*/
+
 	draw();
 
 
@@ -123,7 +134,12 @@ void MapView3D::resizeGL(int width, int height) {
 	//int side = qMin(width, height);
 	//glViewport((width - side) / 2, (height - side) / 2, side, side);
 
-	glViewport(0, 0, width, height);
+
+
+	//glViewport(0, 0, width, height);
+
+	/*
+	TODO_GL
 
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
@@ -138,9 +154,9 @@ void MapView3D::resizeGL(int width, int height) {
 
 	//glFrustum(+w, -w, -h, +h, -20, +20);
 
-
-
 	glMatrixMode(GL_MODELVIEW);
+	*/
+
 }
 
 
@@ -155,13 +171,12 @@ void MapView3D::mouseMoveEvent(QMouseEvent* e) {
 	float dx = mouse.x - e->x();
 	float dy = mouse.y - e->y();
 	if (mouse.btn == 1) {
-		//rot.z += dx/2.0f;	// upward
-		//rot.x -= dy/2.0f;
-		rot.z += dx/2.0f;	// upward
-		rot.x += dy/2.0f;
+		rot.z -= dx/2.0f;
+		rot.x -= dy/2.0f;
 	} else if (mouse.btn == 4) {
 		//Point3 vec(-dx / width() * 2 * viewport.size.x, 0, +dy / height() * 2 * viewport.size.y);
-		Point3 vec(-dx / width() * 2 * viewport.size.x, 0, -dy / height() * 2 * viewport.size.y);
+		Point3 vec(-dx / width() * 2 * viewport.size.x, 0, +dy / height() * 2 * viewport.size.y);
+		//Point3 vec(-dx * 2 / width() , 0, +dy * 2 / height());
 		vec = vec.rot(rot.x/180*M_PI, rot.y/180*M_PI, rot.z/180*M_PI);
 		vec /= scale;
 		center += vec;
@@ -235,14 +250,57 @@ void MapView3D::setShowNavMesh(bool show) {
 
 }
 
+#include "misc/Shader.h"
+
 void MapView3D::draw() {
 
+	static RenderSettings rs = RenderSettings(new Shader());
+
+	glViewport(0, 0, width(), height());
+
+	//glCullFace(GL_FRONT);
+	//glFrontFace(GL_CCW);
+	glEnable(GL_CULL_FACE);
+	glEnable(GL_DEPTH_TEST);
+
+
+	// view
+	QMatrix4x4 V;
+	V.scale(scale.x, scale.y, scale.z);
+	V.rotate(rot.x, 1.0, 0.0, 0.0);
+	V.rotate(rot.y, 0.0, 1.0, 0.0);
+	V.rotate(rot.z, 0.0, 0.0, 1.0);
+	V.translate(center.x, center.z, center.y);
+	V.translate(0,0,-50);
+//	V.lookAt(QVector3D(30,-25,25), QVector3D(30,10,0), QVector3D(0,1,0));
+
+
+	// projection
+	QMatrix4x4 P;
+	float aspect = (float) width() / (float) height();
+	float w = 2.0f;
+	float h = 2.0f * height() / width();
+	viewport.size.x = w;
+	viewport.size.y = h;
+	//P.ortho(-w, +w, +h, -h, 0.1f, +30);			// glOrtho(-w, +w, -h, +h, -20, +20);
+	P.perspective(45.0f, aspect, 0.01, 100);
+
+
+	rs.shader->bind();
+	rs.shader->setViewMatrix(V);
+	rs.shader->setProjectionMatrix(P);
+
+	Cube cube(Point3(0,0,0), 1);
+	cube.setColor(1,0,0);
+	cube.render(rs);
+
+	/*
 	// solid floorplan parts
 	if (showFloorplan) {
 
 		std::vector<MapModelElement*> elements = getModel()->getVisibleElements();
 		for (MapModelElement* el : elements) {
-			if (el->getMV3D() && !el->getMV3D()->isTransparent()) {el->getMV3D()->paintGL();}
+			if (el->getMV3D() && !el->getMV3D()->isTransparent()) {el->getMV3D()->render(rs);}
 		}
 
 	}
@@ -260,9 +318,11 @@ void MapView3D::draw() {
 
 		std::vector<MapModelElement*> elements = getModel()->getVisibleElements();
 		for (MapModelElement* el : elements) {
-			if (el->getMV3D() && el->getMV3D()->isTransparent()) {el->getMV3D()->paintGL();}
+			if (el->getMV3D() && el->getMV3D()->isTransparent()) {el->getMV3D()->render(rs);}
 		}
 
 	}
+	*/
+
 
 }
diff --git a/mapview/3D/MapView3D.h b/mapview/3D/MapView3D.h
index dc17011..a208675 100644
--- a/mapview/3D/MapView3D.h
+++ b/mapview/3D/MapView3D.h
@@ -1,6 +1,8 @@
 #ifndef MAPVIEW3D_H
 #define MAPVIEW3D_H
 
+#include "../../fixC11.h"
+
 #include <QtWidgets>
 #include <QtOpenGL>
 
@@ -12,7 +14,7 @@ class GridRenderer;
 class NavMeshRenderer;
 class NavMeshModel;
 
-class MapView3D : public QGLWidget {
+class MapView3D : public QOpenGLWidget {
 
 	Q_OBJECT
 
diff --git a/mapview/3D/misc/Camera.h b/mapview/3D/misc/Camera.h
new file mode 100644
index 0000000..a9941e9
--- /dev/null
+++ b/mapview/3D/misc/Camera.h
@@ -0,0 +1,23 @@
+#ifndef CAMERA_H
+#define CAMERA_H
+
+#include <QMatrix4x4>
+#include <QMatrix3x3>
+
+class Camera {
+
+	QMatrix4x4 V;
+	QMatrix4x4 P;
+
+public:
+
+	Camera() {
+
+	}
+
+	QMatrix4x4 getV() const {return V;}
+	QMatrix4x4 getP() const {return P;}
+
+};
+
+#endif // CAMERA_H
diff --git a/mapview/3D/misc/Cube.cpp b/mapview/3D/misc/Cube.cpp
new file mode 100644
index 0000000..b3b3aae
--- /dev/null
+++ b/mapview/3D/misc/Cube.cpp
@@ -0,0 +1,259 @@
+#include "Cube.h"
+#include "Shader.h"
+#include <QtOpenGL>
+
+//static float cube_vertices[] = {
+//1	-1.0000, -1.0000, -1.0000,
+//2	-1.0000, 1.0000, -1.0000,
+//3	1.0000, 1.0000, -1.0000,
+//4	1.0000, -1.0000, -1.0000,
+//5	-1.0000, -1.0000, 1.0000,
+//6	1.0000, -1.0000, 1.0000,
+//7	1.0000, 1.0000, 1.0000,
+//8	-1.0000, 1.0000, 1.0000,
+//};
+
+//static int cube_vertex_indices[] = {
+//	1, 2, 3,
+//	3, 4, 1,
+//	5, 6, 7,
+//	7, 8, 5,
+//	1, 4, 6,
+//	6, 5, 1,
+//	4, 3, 7,
+//	7, 6, 4,
+//	3, 2, 8,
+//	8, 7, 3,
+
+//	2, 1, 5,
+//	5, 8, 2,
+//};
+
+static float cube_vertices[] = {
+
+
+	-1, -1, 0,
+	+1, -1, 0,
+	 0, +1, 0,
+
+//	-1.0000, -1.0000, -1.0000,		-1.0000, 1.0000, -1.0000,	1.0000, 1.0000, -1.0000,
+//	1.0000, 1.0000, -1.0000,		1.0000, -1.0000, -1.0000,	-1.0000, -1.0000, -1.0000,
+
+//	-1.0000, -1.0000, 1.0000,		1.0000, -1.0000, 1.0000,	1.0000, 1.0000, 1.0000,
+//	1.0000, 1.0000, 1.0000,			-1.0000, 1.0000, 1.0000,	-1.0000, -1.0000, 1.0000,
+
+//	-1.0000, -1.0000, -1.0000,		1.0000, -1.0000, -1.0000,	1.0000, -1.0000, 1.0000,
+//	1.0000, -1.0000, 1.0000,		-1.0000, -1.0000, 1.0000,	-1.0000, -1.0000, -1.0000,
+
+//	1.0000, -1.0000, -1.0000,		1.0000, 1.0000, -1.0000,	1.0000, 1.0000, 1.0000,
+//	1.0000, 1.0000, 1.0000,			1.0000, -1.0000, 1.0000,	1.0000, -1.0000, -1.0000,
+
+//	1.0000, 1.0000, -1.0000,		-1.0000, 1.0000, -1.0000,	-1.0000, 1.0000, 1.0000,
+//	-1.0000, 1.0000, 1.0000,		1.0000, 1.0000, 1.0000,		1.0000, 1.0000, -1.0000,
+
+//	-1.0000, 1.0000, -1.0000,		-1.0000, -1.0000, -1.0000,	-1.0000, -1.0000, 1.0000,
+//	-1.0000, -1.0000, 1.0000,		-1.0000, 1.0000, 1.0000,	-1.0000, 1.0000, -1.0000,
+
+};
+
+//static float cube_normals[] = {
+//	0.0000, 0.0000, -1.0000,
+//	0.0000, 0.0000, 1.0000,
+//	0.0000, -1.0000, 0.0000,
+//	1.0000, 0.0000, 0.0000,
+//	0.0000, 1.0000, 0.0000,
+//	-1.0000, 0.0000, 0.0000,
+//};
+
+static float cube_normals[] = {
+	0.0000, 0.0000, -1.0000,	0.0000, 0.0000, -1.0000,	0.0000, 0.0000, -1.0000,
+	0.0000, 0.0000, -1.0000,	0.0000, 0.0000, -1.0000,	0.0000, 0.0000, -1.0000,
+
+	0.0000, 0.0000, 1.0000,	0.0000, 0.0000, 1.0000,	0.0000, 0.0000, 1.0000,
+	0.0000, 0.0000, 1.0000,	0.0000, 0.0000, 1.0000,	0.0000, 0.0000, 1.0000,
+
+	0.0000, -1.0000, 0.0000,	0.0000, -1.0000, 0.0000,	0.0000, -1.0000, 0.0000,
+	0.0000, -1.0000, 0.0000,	0.0000, -1.0000, 0.0000,	0.0000, -1.0000, 0.0000,
+
+	1.0000, 0.0000, 0.0000,	1.0000, 0.0000, 0.0000,	1.0000, 0.0000, 0.0000,
+		1.0000, 0.0000, 0.0000,	1.0000, 0.0000, 0.0000,	1.0000, 0.0000, 0.0000,
+
+	0.0000, 1.0000, 0.0000,0.0000, 1.0000, 0.0000,0.0000, 1.0000, 0.0000,
+	0.0000, 1.0000, 0.0000,0.0000, 1.0000, 0.0000,0.0000, 1.0000, 0.0000,
+
+	-1.0000, 0.0000, 0.0000,-1.0000, 0.0000, 0.0000,-1.0000, 0.0000, 0.0000,
+	-1.0000, 0.0000, 0.0000,-1.0000, 0.0000, 0.0000,-1.0000, 0.0000, 0.0000,
+};
+
+//static int cube_normal_indices[] = {
+//	1, 1, 1,
+//	1, 1, 1,
+//	2, 2, 2,
+//	2, 2, 2,
+//	3, 3, 3,
+//	3, 3, 3,
+//	4, 4, 4,
+//	4, 4, 4,
+//	5, 5, 5,
+//	5, 5, 5,
+//	6, 6, 6,
+//	6, 6, 6,
+//};
+
+
+
+//static float cube_vertices[] = {
+
+//	// bottom
+//	+1, -1, -1,
+//	+1, -1, +1,
+//	-1, -1, +1,
+
+//	-1, -1, +1,
+//	-1, -1, -1,
+//	+1, -1, -1,
+
+//	// top
+//	-1, +1, -1,
+//	-1, +1, +1,
+//	+1, +1, +1,
+
+//	+1, +1, +1,
+//	+1, +1, -1,
+//	-1, +1, -1,
+
+//	// left
+//	-1, -1, -1,
+//	-1, -1, +1,
+//	-1, +1, +1,
+
+//	-1, +1, +1,
+//	-1, +1, -1,
+//	-1, -1, -1,
+
+//	// right
+//	+1, +1, -1,
+//	+1, +1, +1,
+//	+1, -1, +1,
+
+//	+1, -1, +1,
+//	+1, -1, -1,
+//	+1, +1, -1,
+
+//	// front
+//	+1, +1, +1,
+//	-1, +1, +1,
+//	-1, -1, +1,
+
+//	-1, -1, +1,
+//	+1, -1, +1,
+//	+1, +1, +1,
+
+//	// rear
+//	+1, -1, -1,
+//	-1, -1, -1,
+//	-1, +1, -1,
+
+//	-1, +1, -1,
+//	+1, +1, -1,
+//	+1, -1, -1,
+
+//};
+
+//static float cube_normals[] = {
+
+//	// bottom
+//	0,-1,0,
+//	0,-1,0,
+//	0,-1,0,
+//	0,-1,0,
+//	0,-1,0,
+//	0,-1,0,
+
+//	// top
+//	0,+1,0,
+//	0,+1,0,
+//	0,+1,0,
+//	0,+1,0,
+//	0,+1,0,
+//	0,+1,0,
+
+//	// left
+//	-1,0,0,
+//	-1,0,0,
+//	-1,0,0,
+//	-1,0,0,
+//	-1,0,0,
+//	-1,0,0,
+
+//	// right
+//	+1,0,0,
+//	+1,0,0,
+//	+1,0,0,
+//	+1,0,0,
+//	+1,0,0,
+//	+1,0,0,
+
+//	// front
+//	0,0,+1,
+//	0,0,+1,
+//	0,0,+1,
+//	0,0,+1,
+//	0,0,+1,
+//	0,0,+1,
+
+//	// rear
+//	0,0,-1,
+//	0,0,-1,
+//	0,0,-1,
+//	0,0,-1,
+//	0,0,-1,
+//	0,0,-1,
+
+//};
+
+static Shader* shader = nullptr;
+
+Cube::Cube(Point3 pos, float size) : pos(pos), size(size,size,size), rot(0,0,0) {
+
+}
+
+Cube::Cube(Point3 pos, Point3 size, Point3 rot) : pos(pos), size(size), rot(rot) {
+
+}
+
+void Cube::setColor(float r, float g, float b) {
+	this->color = Point3(r,g,b);
+}
+
+void Cube::render(const RenderSettings& rs) {
+
+
+
+	rs.shader->bind();
+
+	QMatrix4x4 mat;
+	mat.translate(pos.x, pos.y, pos.z);
+	mat.rotate(rot.x, 1, 0, 0);
+	mat.rotate(rot.y, 0, 1, 0);
+	mat.rotate(rot.z, 0, 0, 1);
+	mat.scale(size.x, size.y, size.z);
+
+
+//	mat.scale(0.1, 0.1, 0.1);
+	rs.shader->setModelMatrix(mat);
+//	shader->setViewMatrix(V);
+//	shader->setProjectionMatrix(P);
+
+	rs.shader->setColor(color.x, color.y, color.z);
+
+	rs.shader->setVertices(cube_vertices);
+	rs.shader->setNormals(cube_normals);
+	glDrawArrays(GL_TRIANGLES, 0, 1*3);
+	//glDrawElements(GL_TRIANGLES, 12, GL_INT, cube_vertex_indices);
+	rs.shader->unsetVertices();
+	rs.shader->unsetNormals();
+
+	rs.shader->release();
+
+};
diff --git a/mapview/3D/misc/Cube.h b/mapview/3D/misc/Cube.h
index 79ce094..cda6a84 100644
--- a/mapview/3D/misc/Cube.h
+++ b/mapview/3D/misc/Cube.h
@@ -2,9 +2,11 @@
 #define CUBE_H
 
 #include <Indoor/geo/Point3.h>
-#include <QtOpenGL>
+#include "Renderable3D.h"
 
-class Cube {
+class Shader;
+
+class Cube : public Renderable3D {
 
 private:
 
@@ -12,20 +14,28 @@ private:
 	Point3 size;
 	Point3 rot;
 
+	Point3 color;
 
 public:
 
-	Cube(Point3 pos, float size) : pos(pos), size(size,size,size), rot(0,0,0) {
+	Cube(Point3 pos, float size);
 
-	}
+	Cube(Point3 pos, Point3 size, Point3 rot);
 
-	Cube(Point3 pos, Point3 size, Point3 rot) : pos(pos), size(size), rot(rot) {
+	void setColor(float r, float g, float b);
 
-	}
+	void render(const RenderSettings& rs) override;
 
-	void paintGL() {
 
-		float s = 1;
+
+
+		/*
+
+		  void paintGL(Shader* shader);
+
+		TODO_GL
+
+		glColor3f(color.x, color.y, color.z);
 
 		glPushMatrix();
 
@@ -90,7 +100,7 @@ public:
 
 		glPopMatrix();
 
-	}
+		*/
 
 };
 
diff --git a/mapview/3D/misc/Renderable3D.h b/mapview/3D/misc/Renderable3D.h
new file mode 100644
index 0000000..21d071d
--- /dev/null
+++ b/mapview/3D/misc/Renderable3D.h
@@ -0,0 +1,20 @@
+#ifndef RENDERABLE3D_H
+#define RENDERABLE3D_H
+
+class Shader;
+
+struct RenderSettings {
+	Shader* shader = nullptr;
+	RenderSettings(Shader* shader) : shader(shader) {;}
+};
+
+
+class Renderable3D {
+
+public:
+
+	virtual void render(const RenderSettings& rs) = 0;
+
+};
+
+#endif // RENDERABLE3D_H
diff --git a/mapview/3D/misc/Shader.cpp b/mapview/3D/misc/Shader.cpp
new file mode 100644
index 0000000..042d670
--- /dev/null
+++ b/mapview/3D/misc/Shader.cpp
@@ -0,0 +1,88 @@
+#include "Shader.h"
+#include <iostream>
+
+Shader::Shader() {
+
+	addCacheableShaderFromSourceCode(QOpenGLShader::Vertex, R"(
+		attribute highp vec3 a_vertex;
+		attribute highp vec3 a_normal;
+		uniform highp mat4 M;
+		uniform highp mat4 V;
+		uniform highp mat4 P;
+		varying highp vec3 normal;
+		void main() {
+			gl_Position = vec4(a_vertex, 1.0);
+			normal = normalize( V*M*vec4(a_normal, 0.0) );
+		}
+	)");
+
+	addCacheableShaderFromSourceCode(QOpenGLShader::Fragment, R"(
+		uniform vec4 color;
+		varying highp vec3 normal;
+		void main() {
+			float intensity = dot( normal, normalize(vec3(-1,-1,-3)) );
+			gl_FragColor.rgb = color.rgb * intensity;
+			gl_FragColor.a = color.a;
+		}
+	)");
+
+	//bindAttributeLocation("vertices", 0);
+	if (!link()) {
+		std::cout << log().toStdString() << std::endl;
+		throw std::runtime_error("shader link error");
+	}
+
+}
+
+
+void Shader::setModelMatrix(const QMatrix4x4& m) {
+	//setUniformValue(getUniform("M"), m);
+}
+
+void Shader::setViewMatrix(const QMatrix4x4& m) {
+	//setUniformValue(getUniform("V"), m);
+}
+
+void Shader::setProjectionMatrix(const QMatrix4x4& m) {
+	//setUniformValue(getUniform("P"), m);
+}
+
+int Shader::getUniform(const char* name) {
+	int loc = uniformLocation(name);
+	if (loc == -1) {throw std::runtime_error("error");}
+	return loc;
+}
+
+int Shader::getAttribute(const char* name) {
+	int loc = attributeLocation(name);
+	if (loc == -1) {throw std::runtime_error("error");}
+	return loc;
+}
+
+
+void Shader::setColor(const float r, const float g, const float b) {
+	setUniformValue(getUniform("color"), QVector4D(r,g,b,1));
+}
+void Shader::setColor(const float r, const float g, const float b, const float a) {
+	setUniformValue(getUniform("color"), QVector4D(r,g,b,a));
+}
+
+void Shader::setVertices(const float* values) {
+	const int loc = getAttribute("a_vertex");
+	enableAttributeArray(loc);
+	setAttributeArray(loc, GL_FLOAT, values, 3);
+}
+void Shader::unsetVertices() {
+	const int loc = getAttribute("a_vertex");
+	disableAttributeArray(loc);
+}
+
+void Shader::setNormals(const float* values) {
+	const int loc = getAttribute("a_normal");
+	enableAttributeArray(loc);
+	setAttributeArray(loc, GL_FLOAT, values, 3);
+}
+void Shader::unsetNormals() {
+	const int loc = getAttribute("a_normal");
+	disableAttributeArray(loc);
+}
diff --git a/mapview/3D/misc/Shader.h b/mapview/3D/misc/Shader.h
new file mode 100644
index 0000000..79f3a2d
--- /dev/null
+++ b/mapview/3D/misc/Shader.h
@@ -0,0 +1,33 @@
+#ifndef SHADER_H
+#define SHADER_H
+
+#include <QOpenGLShaderProgram>
+
+class Shader : public QOpenGLShaderProgram {
+
+public:
+
+	Shader();
+
+	void setModelMatrix(const QMatrix4x4& m);
+
+	void setViewMatrix(const QMatrix4x4& m);
+
+	void setProjectionMatrix(const QMatrix4x4& m);
+
+	void setColor(const float r, const float g, const float b);
+	void setColor(const float r, const float g, const float b, const float a);
+
+	void setVertices(const float*);
+	void unsetVertices();
+
+	void setNormals(const float*);
+	void unsetNormals();
+
+	int getUniform(const char*);
+	int getAttribute(const char*);
+
+
+};
+
+#endif // SHADER_H
diff --git a/mapview/3D/misc/Window.cpp b/mapview/3D/misc/Window.cpp
new file mode 100644
index 0000000..c98826c
--- /dev/null
+++ b/mapview/3D/misc/Window.cpp
@@ -0,0 +1,87 @@
+#include "Window.h"
+#include "Shader.h"
+
+#include <Indoor/geo/Point3.h>
+#include <Indoor/math/Math.h>
+
+static float window_vertices[] = {
+
+	+1, 0, +1,
+	-1, 0, +1,
+	-1, 0, -1,
+
+	-1, 0, -1,
+	+1, 0, -1,
+	+1, 0, +1,
+
+	-1, 0, +1,
+	+1, 0, +1,
+	-1, 0, -1,
+
+	+1, 0, -1,
+	-1, 0, -1,
+	+1, 0, +1,
+
+};
+
+static float window_normals[] = {
+
+	0,-1,0,
+	0,-1,0,
+	0,-1,0,
+
+	0,-1,0,
+	0,-1,0,
+	0,-1,0,
+
+	0,+1,0,
+	0,+1,0,
+	0,+1,0,
+
+	0,+1,0,
+	0,+1,0,
+	0,+1,0,
+
+};
+
+Window::Window(const Point2 from, const Point2 to, float atHeight, float height) :
+	from(from), to(to), atHeight(atHeight), height(height) {
+
+	const Point2 cen = (from+to)/2;
+
+	const float sx = from.getDistance(to) / 2.0f;
+	const float sz = height / 2.0f;
+
+	const float rad = -std::atan2(to.y - from.y, to.x - from.x);
+	const float deg = rad * 180 / M_PI;
+
+	mat.translate(cen.x, cen.y, atHeight + height/2);
+	mat.rotate(deg, 0, 0, 1);
+	mat.scale(sx, 1, sz);
+
+}
+
+void Window::render(const RenderSettings& rs) {
+
+	rs.shader->bind();
+
+	rs.shader->setColor(0.75, 0.85, 1.0, 0.35);
+
+	glEnable(GL_BLEND);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+	//glDisable(GL_CULL_FACE);
+
+	rs.shader->setModelMatrix(mat);
+
+	rs.shader->setVertices(window_vertices);
+	rs.shader->setNormals(window_normals);
+	glDrawArrays(GL_TRIANGLES, 0, 12);
+	rs.shader->unsetVertices();
+	rs.shader->unsetNormals();
+
+	//glEnable(GL_CULL_FACE);
+	glDisable(GL_BLEND);
+
+	rs.shader->release();
+
+}
diff --git a/mapview/3D/misc/Window.h b/mapview/3D/misc/Window.h
new file mode 100644
index 0000000..e833c31
--- /dev/null
+++ b/mapview/3D/misc/Window.h
@@ -0,0 +1,26 @@
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include "Renderable3D.h"
+#include <Indoor/geo/Point2.h>
+
+#include <QMatrix4x4>
+
+class Window : public Renderable3D {
+
+	Point2 from;
+	Point2 to;
+	float atHeight;
+	float height;
+
+	QMatrix4x4 mat;
+
+public:
+
+	Window(const Point2 from, const Point2 to, float atHeight, float height);
+
+	virtual void render(const RenderSettings& rs) override;
+
+};
+
+#endif // WINDOW_H
diff --git a/mapview/3DGrid/GridRenderer.h b/mapview/3DGrid/GridRenderer.h
index 2cd3e76..5733dba 100644
--- a/mapview/3DGrid/GridRenderer.h
+++ b/mapview/3DGrid/GridRenderer.h
@@ -50,6 +50,10 @@ public:
 	/** render the given grid using GL commands */
 	void paintGL(Grid<MyNode>* grid) {
 
+		/*
+
+		TODO_GL
+
 		glDisable(GL_LIGHTING);
 
 		const float sz = 1.0f;	// scale-z: more/less z-spacing
@@ -100,6 +104,8 @@ public:
 			}
 		glEnd();
 
+
+
 //		std::vector<MyNode> vec = lint();
 //		glPointSize(4.0f);
 //		glBegin(GL_POINTS);
@@ -114,6 +120,8 @@ public:
 
 		glEnable(GL_LIGHTING);
 
+		*/
+
 	}
 
 //	std::vector<MyNode> lint() {
diff --git a/mapview/3DNavMesh/NavMeshRenderer.h b/mapview/3DNavMesh/NavMeshRenderer.h
index c555368..930f497 100644
--- a/mapview/3DNavMesh/NavMeshRenderer.h
+++ b/mapview/3DNavMesh/NavMeshRenderer.h
@@ -57,15 +57,14 @@ public:
 
 		if (navMesh == nullptr) {return;}
 
-//		QPainter qp;
-//		qp.begin(dst);
+		/*
+
+		TODO_GL
 
 		glDisable(GL_LIGHTING);
 
 		const float s = 2;
 
-
-
 		glBegin(GL_TRIANGLES);
 			for (const NM::NavMeshTriangle* tria : *navMesh) {
 
@@ -153,6 +152,10 @@ public:
 
 	//	dst->renderText(0,0, "2342342342342423423423423423423432");
 	//	dst->renderText(0.1, 0.1, 0.1, "lsdfsdfsdfsdfsdfsdfsdfol");
+
+
+		*/
+
 	}
 
 //	std::vector<MyNode> lint() {
diff --git a/mapview/model/MapModel.h b/mapview/model/MapModel.h
index 51e49cb..f0e551f 100644
--- a/mapview/model/MapModel.h
+++ b/mapview/model/MapModel.h
@@ -3,6 +3,8 @@
 
 #include <QObject>
 
+#include "../../fixC11.h"
+
 #include "MapLayer.h"
 #include "MapModelElement.h"
 #include "MapModelListener.h"
diff --git a/misc/GnuplotExport.h b/misc/GnuplotExport.h
index 07a4a14..5bb0cf8 100644
--- a/misc/GnuplotExport.h
+++ b/misc/GnuplotExport.h
@@ -1,6 +1,8 @@
 #ifndef GNUPLOTEXPORT_H
 #define GNUPLOTEXPORT_H
 
+#include "fixC11.h"
+
 #include <Indoor/floorplan/v2/Floorplan.h>
 #include <Indoor/grid/Grid.h>
 
diff --git a/misc/LINTView.cpp b/misc/LINTView.cpp
index 0af598f..fb0af70 100644
--- a/misc/LINTView.cpp
+++ b/misc/LINTView.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "LINTView.h"
 
 #include <QStringListModel>
diff --git a/misc/LINTView.h b/misc/LINTView.h
index ec2e733..b3bd0f2 100644
--- a/misc/LINTView.h
+++ b/misc/LINTView.h
@@ -1,6 +1,8 @@
 #ifndef LINTVIEW_H
 #define LINTVIEW_H
 
+#include "fixC11.h"
+
 #include <QListView>
 class QStringListModel;
 #include <Indoor/floorplan/v2/Floorplan.h>
diff --git a/params/ActionWidget.h b/params/ActionWidget.h
index 059e112..6ed19e0 100644
--- a/params/ActionWidget.h
+++ b/params/ActionWidget.h
@@ -1,6 +1,8 @@
 #ifndef ACTIONWIDGET_H
 #define ACTIONWIDGET_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 
 class ActionWidget : public QWidget {
diff --git a/params/EditFields.h b/params/EditFields.h
index dfeaa5f..d3a383e 100644
--- a/params/EditFields.h
+++ b/params/EditFields.h
@@ -1,6 +1,8 @@
 #ifndef EDITFIELDS_H
 #define EDITFIELDS_H
 
+#include "fixC11.h"
+
 #include <QGridLayout>
 #include <QLabel>
 #include <QPushButton>
diff --git a/params/ElementParamWidget.cpp b/params/ElementParamWidget.cpp
index c3fa772..d1c624e 100644
--- a/params/ElementParamWidget.cpp
+++ b/params/ElementParamWidget.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "ElementParamWidget.h"
 
 #include "../mapview/model/MapModelElement.h"
diff --git a/params/ElementParamWidget.h b/params/ElementParamWidget.h
index aa8fe4b..cf0e49c 100644
--- a/params/ElementParamWidget.h
+++ b/params/ElementParamWidget.h
@@ -1,6 +1,8 @@
 #ifndef PARAMWIDGET_H
 #define PARAMWIDGET_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 #include "../mapview/model/MapModelElement.h"
 
diff --git a/params/LayerParamWidget.cpp b/params/LayerParamWidget.cpp
index 0806fb8..d255901 100644
--- a/params/LayerParamWidget.cpp
+++ b/params/LayerParamWidget.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "LayerParamWidget.h"
 #include <QGridLayout>
 
diff --git a/params/LayerParamWidget.h b/params/LayerParamWidget.h
index 214bb00..53dc266 100644
--- a/params/LayerParamWidget.h
+++ b/params/LayerParamWidget.h
@@ -1,6 +1,8 @@
 #ifndef LAYERPARAMWIDGET_H
 #define LAYERPARAMWIDGET_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 
 class MapLayer;
diff --git a/params/LayerTree.cpp b/params/LayerTree.cpp
index df6ede8..7b117db 100644
--- a/params/LayerTree.cpp
+++ b/params/LayerTree.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "LayerTree.h"
 
 #include <QTreeView>
diff --git a/params/LayerTree.h b/params/LayerTree.h
index 0044940..c8af327 100644
--- a/params/LayerTree.h
+++ b/params/LayerTree.h
@@ -1,6 +1,8 @@
 #ifndef LAYERTREE_H
 #define LAYERTREE_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 
 class QTreeView;
diff --git a/params/MetaEditModel.cpp b/params/MetaEditModel.cpp
index 0667c9c..20d568b 100644
--- a/params/MetaEditModel.cpp
+++ b/params/MetaEditModel.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "MetaEditModel.h"
 
 
diff --git a/params/MetaEditModel.h b/params/MetaEditModel.h
index 22f9fb1..5cae633 100644
--- a/params/MetaEditModel.h
+++ b/params/MetaEditModel.h
@@ -1,6 +1,8 @@
 #ifndef METAEDITMODEL_H
 #define METAEDITMODEL_H
 
+#include "fixC11.h"
+
 #include <Indoor/floorplan/v2/Floorplan.h>
 #include <QAbstractTableModel>
 
diff --git a/params/MetaEditWidget.cpp b/params/MetaEditWidget.cpp
index a574113..bd478d0 100644
--- a/params/MetaEditWidget.cpp
+++ b/params/MetaEditWidget.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "MetaEditWidget.h"
 #include "MetaEditModel.h"
 
diff --git a/params/MetaEditWidget.h b/params/MetaEditWidget.h
index 6e4d6ec..e4af586 100644
--- a/params/MetaEditWidget.h
+++ b/params/MetaEditWidget.h
@@ -1,9 +1,13 @@
 #ifndef METAEDITWIDGET_H
 #define METAEDITWIDGET_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 #include <Indoor/floorplan/v2/Floorplan.h>
 
+#include "../fixC11.h"
+
 class MetaEditModel;
 class QTableView;
 
diff --git a/params/StairBuilder.h b/params/StairBuilder.h
index 862eddc..a529cb7 100644
--- a/params/StairBuilder.h
+++ b/params/StairBuilder.h
@@ -1,6 +1,8 @@
 #ifndef STAIRBUILDER_H
 #define STAIRBUILDER_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 
 class StairBuilder : public QWidget
@@ -14,4 +16,4 @@ signals:
 public slots:
 };
 
-#endif // STAIRBUILDER_H
\ No newline at end of file
+#endif // STAIRBUILDER_H
diff --git a/params/ToolBox.cpp b/params/ToolBox.cpp
index 78f2d31..bed5d01 100644
--- a/params/ToolBox.cpp
+++ b/params/ToolBox.cpp
@@ -1,3 +1,5 @@
+#include "../fixC11.h"
+
 #include "ToolBoxWidget.h"
 
 #include <QVBoxLayout>
diff --git a/params/ToolBoxWidget.h b/params/ToolBoxWidget.h
index 59014d4..ef81aa4 100644
--- a/params/ToolBoxWidget.h
+++ b/params/ToolBoxWidget.h
@@ -1,6 +1,8 @@
 #ifndef TOOLBOX_H
 #define TOOLBOX_H
 
+#include "fixC11.h"
+
 #include <QWidget>
 
 class MapLayer;
diff --git a/tree/MapTreeModel.h b/tree/MapTreeModel.h
index 9ff442a..bc8a6af 100644
--- a/tree/MapTreeModel.h
+++ b/tree/MapTreeModel.h
@@ -1,6 +1,8 @@
 #ifndef MAPTREE_H
 #define MAPTREE_H
 
+#include "../fixC11.h"
+
 #include <QAbstractItemModel>
 #include "../mapview/model/MapModel.h"