Spirograph - geometric construction: Difference between revisions

Revision as of 16:08, 19 July 2010

@@ Line 8: / Line 8: @@
 var g1 = brd.create('line',[O,B], {strokeColor:'lightgray'});
 var C = brd.create('reflection',[g1,A],{name:'C', fillColor:'blue', strokeColor:'blue'});
-var g3 = brd.create('line',[O,C], {strokeColor:'lightgray'});
-var C2 = brd.create('reflection',[g3,B],{name:'C_2', fillColor:'blue', strokeColor:'blue'}); // Winkel-Verdreifachung
@@ Line 17: / Line 14: @@
 var k2 = brd.create('circle',[M,B],{name:'k'});
-var Cprime = brd.create('parallelpoint',[O,M,C], {name:"C'", fillColor:'blue', strokeColor:'blue'});
+var gpar = brd.create('parallel',[O,C,M], {name:"g", strokeColor:'lightgray'});
-//var Cprime = brd.create('parallelpoint',[O,M,C2], {name:"C'", fillColor:'blue', strokeColor:'blue'}); // Winkel-Verdreifachung
+var Cprime = brd.create('intersection',[gpar,k2,0], {name:"C'", fillColor:'blue', strokeColor:'blue'});
 var g2 = brd.create('line',[M,Cprime], {strokeColor:'lightgray'});