//
// Autor:    Timo Ehmke (ehmke@ipn.uni-kiel.de)
//

showLabel = false
 
// Figurenbeschreibung 
// ===================

   e[1] = A;	point;	dragable;		-3.0,4.0;			
   e[2] = B;	point;	dragable;		-13.0,4.0;			
   e[3] = C;	point;	rotation;    	A,B,1.570796327;		
   e[4] = D;	point;	rotation;    	B,A,-1.570796327;		
   e[5] = q1;	polygon;quadrilateral;	A,B,C,D;			0;0;0;blue
   e[6] = a;	line;	connect;	A,B;    			black;0;black;0
   e[7] = b;	line;	connect;	B,C;				black;0;black;0
   e[8] = c;	line;	connect;	D,C;				black;0;black;0
   e[9] = d;	line;	connect;	D,A;				black;0;black;0
   e[10] = M;	point;	midpoint;    	A,C;				0;0;0;0
   e[11] = Ma;	point;	rotation;    	M,A,0.785398163;		0;0;0;0
   e[12] = k;	circle;	radius;	 	A,Ma;				0;0;0;0
   e[13] = A';	point;	dragable;	-5.5,8.3,k;			black;red;black;smallcircle
   e[14] = B';	point;	rotation;    	A',A,1.570796327;		black;blue;black;smallcircle
   e[15] = C';	point;	rotation;    	A',A,3.141592654;		black;blue;black;smallcircle
   e[16] = D';	point;	rotation;    	A',A,-1.570796327;		black;blue;black;smallcircle
   e[17] = q2;	polygon;quadrilateral;	A',B',C',D';			0;0;0;green
   e[18] = a';	line;	connect;	A',B';    			black;0;black;0
   e[19] = b';	line;	connect;	B',C';				black;0;black;0
   e[20] = c';	line;	connect;	D',C';				black;0;black;0
   e[21] = d';	line;	connect;	D',A';				black;0;black;0
   e[22] = Ma';	point;	midpoint;    	A',B';				0;0;0;0
   e[23] = Mb';	point;	midpoint;    	B',C';				0;0;0;0
   e[24] = Mc';	point;	midpoint;    	D',C';				0;0;0;0
   e[25] = Md';	point;	midpoint;    	D',A';				0;0;0;0
   e[26] = Saa';point;	intersection;   a,a',"segment";			0;0;0;0
   e[27] = Sab';point;	intersection;   a,b',"segment";			0;0;0;0
   e[28] = Sac';point;	intersection;   a,c',"segment";			0;0;0;0
   e[29] = Sad';point;	intersection;   a,d',"segment";			0;0;0;0
   e[30] = Sda';point;	intersection;   d,a',"segment";			0;0;0;0
   e[31] = Sdb';point;	intersection;   d,b',"segment";			0;0;0;0
   e[32] = Sdc';point;	intersection;   d,c',"segment";			0;0;0;0
   e[33] = Sdd';point;	intersection;   d,d',"segment";			0;0;0;0
   e[34] = p1;	polygon;triangle;	A,Md',Sad';			0;0;blue;yellow
   e[35] = p2;	polygon;triangle;	A,Ma',Saa';			0;0;blue;yellow
   e[36] = p3;	polygon;triangle;	A,Mb',Sab';			0;0;blue;yellow
   e[37] = p4;	polygon;triangle;	A,Mc',Sac';			0;0;blue;yellow
   e[38] = p5;	polygon;triangle;	A,Md',Sdd';			0;0;blue;yellow
   e[39] = p6;	polygon;triangle;	A,Ma',Sda';			0;0;blue;yellow
   e[40] = p7;	polygon;triangle;	A,Mb',Sdb';			0;0;blue;yellow
   e[41] = p8;	polygon;triangle;	A,Mc',Sdc';			0;0;blue;yellow
   e[42] = sw1;	measure;checkbox;	"Lösung zeigen",0;
   e[43] = v1;	polygon;quadrilateral;	A,Saa',A',Sdd';			0;0;black;red
   e[44] = v2;	polygon;quadrilateral;	A,Sab',B',Sda';			0;0;black;red
   e[45] = v3;	polygon;quadrilateral;	A,Sac',C',Sdb';			0;0;black;red
   e[46] = v4;	polygon;quadrilateral;	A,Sad',D',Sdc';			0;0;black;red


// Animation
// =========
//
// Syntax:
// Punktname [string],
// Bewegungsrichtung [1 oder 0],
// Verzögerung in msec [0..500],
// Anzahl der Schritte [50..300],
// Schalter x-Koordinate [double!],
// Schalter y-Koordinate [double!],
// Schalter Startposition [1.0 oder 0.0]

   animation[1] = "A',1,100,100,10.0,7.0,0.0" 



// Sichtbarkeit von Objekten einschränken
// ======================================

   hidden[1] = "if (not(calculate(sw1))) hide (p1,p2,p3,p4,p5,p6,p7,p8)" 
   hidden[2] = "if (calculate(sw1)) hide (v1,v2,v3,v4)" 


   <ProblemText>
   Position = 390;260;-1;-1
   Die beiden Quadrate sind gleich groß.
   Dreht man das grüne Quadrat, so
   ändert sich die Überlappungsform.
   Ändert sich dabei auch die Größe der
   gemeinsamen Fläche?
   </ProblemText>