22 Aug 2007

Asymptote using geometry.asy – fig0840

Figure 0084
(Compiled with Asymptote version 2.14svn-r5318)
    
import geometry;
size(8cm,0);

// currentcoordsys=cartesiansystem((1,2),i=(1,0.5),j=(-0.5,.75));
// show(currentcoordsys, xpen=invisible);

point C=(1,1);
dot("$C$", C, NE, red);

real R=2;
arc a=arc(ellipse(C,R,R/2), 90, 0, fromCenter);
draw(a, linewidth(4mm));

/* View the definition of void markarc(picture,Label,int,real,real,arc,arrowbar,pen,pen,margin,marker) */
markarc(format("%0g", degrees(a)), radius=-0.5*markangleradius(), a);

/* View the definition of arc *(real, explicit arc) */
draw(0.5*a, 2mm+yellow);

arc ap=a/3;
draw(ap, 1mm+blue);
markarc(format("%0g", degrees(ap)), radius=1.5*markangleradius(), ap, blue);

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