Figure Asymptote geometry -- 065

Posted on 2011-01-01 Edited on 2025-04-20 In Tech , Programming , Asymptote , Examples 2D , Geometry.asy

An Asymptote code and the generated picture geometry--065.

🔗This picture comes from the Asymptote gallery of topic geometry

Figure geometry 065 Generated with Asymptote

Show geometry/fig0650.asy on Github.
Generated with Asymptote 3.00-0.
Categories : Examples 2D | Geometry.asy
Tags : #Geometry | #Ellipse | #Abscissa | #Point

import geometry;
size(15cm,0);

currentcoordsys=cartesiansystem((0,0),i=(1,0.5),j=(-0.5,.75));
show(currentcoordsys, xpen=invisible);

point A=(4,2);

ellipse el=ellipse(A,3,2,20);
draw(el);
dot("$C$",el.C,S,red);

dot("$F_1$",el.F1,S);
dot("$F_2$",el.F2,S);


///////////////////////////////////////
currentpolarconicroutine=fromCenter;//
/////////////////////////////////////

/*<asyxml><view file="modules/geometry.asy" type="point" signature="angpoint(explicit ellipse,real,polarconicroutine)"/></asyxml>*/
point P=angpoint(el, 0);
dot("angpoint(el, 0)", P,E);
draw(el.C--P);

point P=angpoint(el, 90);
dot("angpoint(el, 90)", P,NW);
draw(el.C--P);

point P=angpoint(el, 90, fromFocus);
dot("angpoint(el,90,fromFocus)", P,NW);
draw(el.F1--P);


/*<asyxml><view file="modules/geometry.asy" type="abscissa" signature="angabscissa(real,polarconicroutine)"/></asyxml>*/
dot("angpoint(el, 180)", point(el,angabscissa(180)), W);

dot("angpoint(el, 370)", angpoint(el,370),NE);
dot("angpoint(el, -45)", angpoint(el,-45),SE);

point P=angpoint(el, -45, fromFocus);
dot("angpoint(el,-45,fromFocus)", P,S);
draw(el.F1--P);