## Asymptote Generalities – fig0880

Category: Asymptote,Examples 2D,GeneralitiesPh. Ivaldi @ 13 h 39 min

 (Compiled with Asymptote version 2.14svn-r5318)

size(0,0);
pair A=(0,0), B=(4cm,0);
path line=A--B;
transform TD=shift(0,-cm);
transform TR=shift(2.5cm,0);

defaultpen(linewidth(3bp));

draw("$AB$",line,.8red,Arrows(3mm));
draw("$A$",A,N); draw("$B$",B,N);

draw("$AB$",TD*line,.8red,Arrows(3mm),PenMargins);
draw("$A$",TD*A,N); draw("$B$",TD*B,N);

draw("$AB$",TD^2*line,.8red,Arrows(3mm),DotMargins);
dot("$A$",TD^2*A,dotfactor*NW); dot("$B$",TD^2*B,dotfactor*NE);

margin BigMargins=Margin(2,2);
draw("$AB$",TD^3*line,.8red,Arrows(3mm),BigMargins);
draw("$A$",TD^3*A,N); draw("$B$",TD^3*B,N);



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## Asymptote Generalities – fig0890

Category: Asymptote,Examples 2D,GeneralitiesPh. Ivaldi @ 14 h 39 min

 (Compiled with Asymptote version 2.14svn-r5318)

//From documentation of Asymptote
size(6cm,0);

void distance(picture pic=currentpicture, pair A, pair B, Label L="", real n=0, pen p=currentpen)
{
real d=3mm;
guide g=A--B;
transform T=shift(-n*d*unit(B-A)*I);
pic.add(new void(frame f, transform t) {
picture opic;
guide G=T*t*g;
draw(opic,G,p,Arrows(NoFill),Bars,PenMargins);
label(opic,L,midpoint(G),UnFill(1));
add(f,opic.fit());
});
pic.addBox(min(g),max(g),T*min(p),T*max(p));
}

pair A=(0,0), B=(3,3);

dot(A);
dot(B);
distance(A,B,rotate(dir(A--B))*Label("$\ell$"),1);



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## Asymptote Generalities – fig0910

Category: Asymptote,Examples 2D,GeneralitiesPh. Ivaldi @ 16 h 39 min

 (Compiled with Asymptote version 2.14svn-r5318)

size(0,0);
pair A=0;
dot(A);
arrow("1",A,NE,2cm);
arrow("2",A,SE,1cm);
arrow("3",A,SW,1.5cm,Margin(3,0));
arrow("4",A,NW,1.5cm,N);



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## Asymptote Generalities – fig1660

Category: Asymptote,Examples 2D,GeneralitiesPh. Ivaldi @ 19 h 39 min

 (Compiled with Asymptote version 2.14svn-r5318)

size(10cm,0);

path apath=(0,0)..(1,1)..(2,.5){dir(0)};
real l=length(apath);
real step=l/15;

for(real i=0; i<l-step; i+=step)
draw(subpath(apath,i,i+step),4bp+(i/l*red+(l-i)/l*blue),PenMargins);
draw(apath);



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## Asymptote Generalities – fig1670

Category: Asymptote,Examples 2D,GeneralitiesPh. Ivaldi @ 20 h 39 min

 (Compiled with Asymptote version 2.14svn-r5318)

size(10cm,0);

path apath=(0,0)..(1,1)..(2,.5){dir(0)};
real l=arclength(apath);
real step=l/15;

path arcpath(path apath, real t1, real t2)
{
return subpath(apath, arctime(apath,t1), arctime(apath,t2));
}

for(real i=0; i<l-step; i+=step)
draw(arcpath(apath,i,i+step),4bp+(i/l*red+(l-i)/l*blue),PenMargins);
draw(apath);



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## Asymptote using trembling.asy – fig0070

Category: Asymptote,Examples 2D,trembling.asyPh. Ivaldi @ 8 h 24 min

 (Compiled with Asymptote version 1.87svn-r4652)

import trembling;
startTrembling(angle=6, frequency=1, random=10);

size(8cm);

triangle T=triangleabc(6,6,6);

draw(T, dot);
draw(bisector(T.AB)^^bisector(T.AC)^^bisector(T.BC), 0.8*red);

addMargins(1cm,1cm);



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## Official Asymptote example – Pythagoras

Category: Asymptote,Official Gallery One-PagerPh. Ivaldi @ 21 h 57 min

 (Compiled with Asymptote version 2.14svn-r5318)
/* This code comes from The Official Asymptote Gallery */

size(0,150);
import geometry;

real a=3;
real b=4;
real c=hypot(a,b);

pair z1=(0,b);
pair z2=(a,0);
pair z3=(a+b,0);
perpendicular(z1,NE,z1--z2,blue);
perpendicular(z3,NW,blue);
draw(square((0,0),z3));
draw(square(z1,z2));

real d=0.3;
pair v=unit(z2-z1);
draw(baseline("$a$"),-d*I--z2-d*I,red,Bars,Arrows,PenMargins);
draw(baseline("$b$"),z2-d*I--z3-d*I,red,Arrows,Bars,PenMargins);
draw("$c$",z3+z2*I-d*v--z2-d*v,red,Arrows,PenMargins);
draw("$a$",z3+d--z3+z2*I+d,red,Arrows,Bars,PenMargins);
draw("$b$",z3+z2*I+d--z3+z3*I+d,red,Arrows,Bars,PenMargins);



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## Official Asymptote example – lever

Category: Asymptote,Official Gallery One-PagerPh. Ivaldi @ 0 h 57 min

 (Compiled with Asymptote version 2.14svn-r5318)
/* This code comes from The Official Asymptote Gallery */

size(200,0);

pair z0=(0,0);
pair z1=(2,0);
pair z2=(5,0);
pair zf=z1+0.75*(z2-z1);

draw(z1--z2);
dot(z1,red+0.15cm);
dot(z2,darkgreen+0.3cm);
label("$m$",z1,1.2N,red);
label("$M$",z2,1.5N,darkgreen);
label("$\hat{\ }$",zf,0.2*S,fontsize(24pt)+blue);

pair s=-0.2*I;
draw("$x$",z0+s--z1+s,N,red,Arrows,Bars,PenMargins);

s=-0.5*I;
draw("$\bar{x}$",z0+s--zf+s,blue,Arrows,Bars,PenMargins);

s=-0.95*I;
draw("$X$",z0+s--z2+s,darkgreen,Arrows,Bars,PenMargins);



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