#ifndef HGEOTRAP_H
#define HGEOTRAP_H

#include "hgeobasicshapes.h"

//
// class for Geant-shape TRAP
// derived from baseclass HGeoBasicShapes
//
// To read the 8 xyz-points from database or file the function readPoints(...)
// in the baseclass is used.
//
// The technical coordinate system of a TRAP, which sits in CAVE and is not
// rotated, is the laboratory system. The y-axis points from the smaller side to
// the larger one. That's the opposite of the Geant-definition for a TRAP.
// Therefore a transformation is needed:
//              x-technical = - (x-Geant)
//              y-technical = - (y-Geant)
//              z-technical = z-Geant
// This is described by cgRot.
//

class HGeoTrap : public HGeoBasicShapes {
public:
	HGeoTrap() {
		nCorners=8;
		cgRot=0.0F;
		cgRot[0]=-1.F;
		cgRot[4]=-1.F;
		cgRot[8]=1.F;
	}
	~HGeoTrap(){}

	// calculates the Geant-shapeparameters
	void calcShape(HGeoParam & ele, HGeoShapePar & shapePar);

        // calculates the position the Geant coordinate system in the technical
        // coordinate system and invokes posInMother(...) of the base class
	int posShape(HGeoParam & ele, HGeoParam & mo, HGeoShapePar & shapePar);
};

#endif