#ifndef MV3DELEMENTFLOOROBSTACLEWALL_H
#define MV3DELEMENTFLOOROBSTACLEWALL_H

#include <Indoor/floorplan/v2/Floorplan.h>

#include "MV3DElement.h"

class MV3DElementFloorObstacleWall : public MV3DElement {

	Floorplan::Floor* f;
	Floorplan::FloorObstacleLine* fo;

public:

	/** ctor */
	MV3DElementFloorObstacleWall(Floorplan::Floor* f, Floorplan::FloorObstacleLine* fo) : f(f), fo(fo) {
		;
	}

protected:

	Point3 cross(Point3 u, Point3 v) {
		float x = u.y*v.z - u.z*v.y;
		float y = u.z*v.x - u.x*v.z;
		float z = u.x*v.y - u.y*v.x;
		return Point3(x,y,z);
	}

	/** repaint me */
	void paintGL() override {

		float y1 = f->atHeight;
		float y2 = y1+f->height;






		Point3 p1 = Point3(fo->from.x, y1, fo->from.y);
		Point3 p2 = Point3(fo->to.x, y1, fo->to.y);
		Point3 p3 = Point3(fo->to.x, y2, fo->to.y);
		Point3 p4 = Point3(fo->from.x, y2, fo->from.y);

		Point3 v1 = p2-p1;
		Point3 v2 = p3-p1;
		Point3 n = cross(v1, v2);
		n/=n.length();

		// align normals to virtual viewport
		Point3 view(99,99,99);
		if ((view-n).length() > (view+n).length()) {n = -n;}

		if (fo->type == Floorplan::ObstacleType::WALL) {

			// fill the wall
			glColor3f(0.75, 0.75, 0.75);
			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);

		}

		glColor3f(0,0,0);

//		glDisable(GL_LIGHTING);
//		glBegin(GL_LINE_STRIP);
//			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);
//			glVertex3f(p1.x, p1.y, p1.z);
//		glEnd();
//		glEnable(GL_LIGHTING);

	}

};

#endif // MV3DELEMENTFLOOROBSTACLEWALL_H