Difference between revisions of "Reuleaux pentagon"

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Line 20: Line 20:
 
var D = brd.create('point',[C.X()+3/5*(1+Math.sqrt(5))*0.5*A.Dist(B), C.Y()]);
 
var D = brd.create('point',[C.X()+3/5*(1+Math.sqrt(5))*0.5*A.Dist(B), C.Y()]);
 
var pol3 = brd.create('regularpolygon',[C,D,3], {withLines:false, fillColor:'#e8501f', highlightFillColor:'#e8501f', fillOpacity:0.0});
 
var pol3 = brd.create('regularpolygon',[C,D,3], {withLines:false, fillColor:'#e8501f', highlightFillColor:'#e8501f', fillOpacity:0.0});
 +
 +
// Heptagon
 
var E = brd.create('point',[-2,-2]);
 
var E = brd.create('point',[-2,-2]);
 
var F = brd.create('point',[E.X()+7/5*A.Dist(pol5.vertices[2]), E.Y()]);
 
var F = brd.create('point',[E.X()+7/5*A.Dist(pol5.vertices[2]), E.Y()]);
Line 30: Line 32:
 
var reuleauxTriangle = brd.create('curve', JXG.Math.Numerics.reuleauxPolygon(pol3.vertices, 3),  
 
var reuleauxTriangle = brd.create('curve', JXG.Math.Numerics.reuleauxPolygon(pol3.vertices, 3),  
 
       {color:'#e8501f', highlightFillColor:'#e8501f'});
 
       {color:'#e8501f', highlightFillColor:'#e8501f'});
 +
brd.unsuspendUpdate();
  
     
 
 
 
brd.unsuspendUpdate();
 
 
var rol = JXG.Math.Numerics.createRoulette(reuleauxHeptagon, reuleauxPentagon, 6*Math.PI/5, Math.PI/90, -1, 10, [A,B]);  
 
var rol = JXG.Math.Numerics.createRoulette(reuleauxHeptagon, reuleauxPentagon, 6*Math.PI/5, Math.PI/90, -1, 10, [A,B]);  
var rol3 = JXG.Math.Numerics.createRoulette(reuleauxPentagon, reuleauxTriangle, 6*Math.PI/5, Math.PI/90, 1, 10, [C,D]);  
+
//var rol3 = JXG.Math.Numerics.createRoulette(reuleauxPentagon, reuleauxTriangle, 6*Math.PI/5, Math.PI/90, 1, 10, [C,D]);  
 
</jsxgraph>
 
</jsxgraph>
  

Revision as of 22:51, 2 October 2010

The underlying JavaScript code

var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5]});
brd.suspendUpdate();
// Pentagon
var A = brd.create('point',[-2,-2]);
var B = brd.create('point',[2,-2]);
var pol = brd.create('regularpolygon',[A,B,5], {withLines:false, fillColor:'none', highlightFillColor:'none'});
var reuleauxPentagon = brd.create('curve', JXG.Math.Numerics.reuleauxPolygon(pol.vertices, 5), 
       {color:'#093083', highlightFillColor:'#093083'});
       
// Triangle
var C = brd.create('point',[-2,-2]);
var D = brd.create('point',[C.X()+3/5*(1+Math.sqrt(5))*0.5*A.Dist(B), C.Y()]);
var pol3 = brd.create('regularpolygon',[C,D,3], {withLines:false, fillColor:'#e8501f', highlightFillColor:'#e8501f'});
var reuleauxTriangle = brd.create('curve', JXG.Math.Numerics.reuleauxPolygon(pol3.vertices, 3), 
       {color:'#e8501f', highlightFillColor:'#e8501f'});

brd.unsuspendUpdate();
var rol = JXG.Math.Numerics.createRoulette(reuleauxPentagon, reuleauxTriangle, 6*Math.PI/5, Math.PI/90, -1, 10, [C,D]);