Asymptote released version 2.57?

[quanhinh9]

I'm download asymptote version 2.57 with link below and install. https://excellmedia.dl.sourceforge.net/project/asymptote/2.57/asymptote-2.57-setup.exe

After installation, I'm run command asy:

Welcome to Asymptote version 2.49 (to view the manual, type help)

And have same error: https://github.com/vectorgraphics/asymptote/issues/118

[johncbowman]

You need to run asy 2.57, not 2.49.

[quanhinh9]

I'm download new version 2.57, but after install and asy show version 2.49.

[johncbowman]

This is not an asy problem. You are running the old version of asy. If you say which asy you will see that you are using another version (likely the version that comes with TeXLive). You need to make sure the new version is in your path or else specify explicitly the location where you installed it to.

[quanhinh9]

This is not an asy problem. You are running the old version of asy. If you say which asy you will see that you are using another version (likely the version that comes with TeXLive). You need to make sure the new version is in your path or else specify explicitly the location where you installed it to.

Thank you.

[quanhinh9]

I'm write asy code:

`\begin{asy} import geometry; unitsize(1cm); defaultpen(fontsize(11pt));

conic g2inconic(triangle t, point P) { point D=intersectionpoint(line(t.A,P),line(t.B,t.C)); point E=intersectionpoint(line(t.B,P),line(t.C,t.A)); point F=intersectionpoint(line(t.C,P),line(t.A,t.B)); point J=intersectionpoint(line(t.B,midpoint(D--F)),line(t.C,midpoint(D--E))); point Y=rotate(180,J)E; point Z=rotate(180,J)F; return conic(D,E,F,Y,Z); }

point A=(1,5); dot(Label("$A$",align=NW),A); point B=(0,0); dot(Label("$B$",align=SW),B); point C=(7,0); dot(Label("$C$",align=SE),C); draw(A--B--C--A); triangle t=triangle(A,B,C); point P=(3,2); point D=intersectionpoint(line(t.A,P),line(B,C)); dot(Label("$D$",align=SE),D); point E=intersectionpoint(line(t.B,P),line(C,A)); dot(Label("$E$",align=NE),E); point F=intersectionpoint(line(t.C,P),line(A,B)); dot(Label("$F$",align=NW),F);

conic co=g2inconic(t,P); draw(co);

point J=intersectionpoint(line(t.B,midpoint(D--F)),line(t.C,midpoint(D--E)));; dot(Label("$J$",align=SE),J); circle cj=circle(J,abs(J-D)); draw(cj);

//point[] t=intersectionpoints(co,(conic)cj); point[] t=intersectionpoints(co,cj); dot(Label("$t_1$",align=SE),t[1]);

\end{asy}`

If use: point[] t=intersectionpoints(co,cj); I get error: call of function 'intersectionpoints(conic, circle)' is ambiguous.

and I change to solve: point[] t=intersectionpoints(co,(conic)cj);

It is an error?

[johncbowman]

Next time it would be better to post a new bug report so others will see this too. Anyway, this problem is a result of ambiguous casting in geometry.asy (the original author of which is no longer actively developing Asymptote). Fortunately I was able to solve it by demoting implicit casts to explicit ecasts for converting general objects like conic to special cases like circle (just like when we ecast a real to an int; the user has to explicitly force this with (int)). You can fetch the new version of geometry.asy and try it out: https://raw.githubusercontent.com/vectorgraphics/asymptote/HEAD/base/geometry.asy

[quanhinh9]

Sorry johncbowman, I use asymptote version 2.5.7. The circle(t[0],abs(t[0]-A)) is not exactly, it not thought point A. There is a warning [coodinatesystem]: the coordinate system of two objects are not the same. The operation will be done relative to the default coordinate system. `\begin{asy} import geometry; //import g2geo; unitsize(1cm); defaultpen(fontsize(11pt));

point A=(1.1,4); dot(Label("$A$",align=NW),A); point B=(0,0); dot(Label("$B$",align=SW),B); point C=(7,0); dot(Label("$C$",align=SE),C); draw(A--B--C--A);

triangle t=triangle(A,B,C); draw(circle(A,B,C)); point I=incenter(t); dot(Label("$I$",align=NW),I); point J=excenter(t.BC); dot(Label("$J$",align=NW),J); point M=midpoint(t.BC); dot(Label("$M$",align=SE),M);

point D=projection(line(B,C))*A; dot(Label("$D$",align=SE),D);

circle b1=incircle(t), c1=excircle(t.BC); draw(b1,red); draw(c1,red);

hyperbola hypB=hyperbola(M,b1.C,b1.r/2); draw(hypB,blue); hyperbola hypC=hyperbola(M,c1.C,c1.r/2); draw(hypC,orange);

point[] t= intersectionpoints(hypB,hypC);

dot(Label("$t_0$",align=SE),t[0]); dot(Label("$t_1$",align=SE),t[1]);

draw(circle(t[0],abs(t[0]-A)),blue);

\end{asy}`

[johncbowman]

Sorry, I forgot to change the points back to currentcoordsys. Grab a new copy of https://raw.githubusercontent.com/vectorgraphics/asymptote/HEAD/base/geometry.asy or wait an hour for the 2.58 release, which I am about to build. With it your example works, as well as this modification:

import geometry;
unitsize(1cm);
defaultpen(fontsize(11pt));

pair A=(1.1,4); dot(Label("$A$",align=NW),A);
pair B=(0,0); dot(Label("$B$",align=SW),B);
pair C=(7,0); dot(Label("$C$",align=SE),C);
draw(A--B--C--A);

triangle t=triangle(A,B,C);
draw(circle(A,B,C));
point I=incenter(t); dot(Label("$I$",align=NW),I);
point M=midpoint(t.BC); dot(Label("$M$",align=SE),M);

circle b1=incircle(t), c1=excircle(t.BC);
draw(b1,red); draw(c1,red);

hyperbola hypB=hyperbola(M,b1.C,b1.r/2); draw(hypB,blue);
hyperbola hypC=hyperbola(M,c1.C,c1.r/2); draw(hypC,orange);

point[] t= intersectionpoints(hypB,hypC);

for(int i=0; i < t.length; ++i) {
  dot(Label(math("t"+string(i)),align=SE),t[i]);
  draw(circle(t[i],abs(t[i]-A)),Pen(i)+dashed);
}