Difference between revisions of "Asymptote: Useful commands and their Output"

m
Line 120: Line 120:
 
  draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);
 
  draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);
  
'''Output 8:'''
+
'''Output 9:'''
 
<asy> import three;
 
<asy> import three;
 
  unitsize(1cm);
 
  unitsize(1cm);
Line 131: Line 131:
 
  draw((1,0,0)--(1,0,1));
 
  draw((1,0,0)--(1,0,1));
 
  draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);</asy>
 
  draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);</asy>
 +
 +
'''Example 10:'''
 +
 +
"Output 10:"
 +
<asy>
 +
unitsize(1cm);
 +
pair A1=(2,5),A2=(10,1);
 +
pair B1=(1,1),B2=(10,5);
 +
pair C1=(1,2),C2=(10,3.5);
 +
path curveI = A1 .. controls (6,5) .. A2;
 +
path curveII = B1 .. controls (3,4) .. B2;
 +
path curveIII = C1 .. controls (3,3) and (7,0) .. (9,2) ..controls C2 .. C2;
 +
fill(buildcycle(curveI,reverse(curveIII),curveII),yellow);
 +
draw(curveI, red);
 +
draw(curveII, blue);
 +
draw(curveIII, green);
 +
pair ip_1 = intersectionpoint(curveI, curveII);
 +
pair ip_2 = intersectionpoint(curveII, curveIII);
 +
pair ip_3 = intersectionpoint(curveI, curveIII);
 +
label("$A_1$",A1,1.5W,red);
 +
label("$A_2$",A2,1SE,red);
 +
label("$B_1$",B1,1.5SSW,heavyblue);
 +
label("$B_2$",B2,1.12E,heavyblue);
 +
label("$C_1$",C1,1.5W,heavygreen);
 +
label("$C_2$",C2,1.25E,heavygreen);
 +
dot(ip_1^^ip_2^^ip_3);
 +
label("$S_1$",ip_1, 1.5*NNE);
 +
label("$S_2$",ip_2, 1.5*SSE);
 +
label("$S_3$",ip_3, 1.85*dir(-93));
 +
dot(A1^^A2, mediumred);
 +
dot(B1^^B2, mediumblue);
 +
dot(C1^^C2, mediumgreen);
 +
</asy>
 +
  
 
'''Examples in Forum'''
 
'''Examples in Forum'''

Revision as of 14:35, 2 April 2014

Asymptote (Vector Graphics Language)
Getting Started - Basics - Drawing - Labeling - Filling - Useful functions - Examples - Macros and Packages

Help - Reference - Advanced Asymptote - 3D Graphics - CSE5 Package - How to

For more complicated examples, which are often quite neat, see this page in the Art of Problem Solving Test Forum, which has various diagrams from contests. Clicking on them will reveal the code used to make them, so this is an excellent resource for students looking to make more advanced diagrams.


For each of the following, we have put a blue dot at the origin in order to indicate relative location of the output on the coordinate plane. In other words, assume that before each of the examples below is the command

dot((0,0),blue);

In addition, a comment after a line such as //math - extension indicates that the command (in this case extension) used in that line is defined in the math package, thus motivating the import math; (or other appropriate package) line at the top of the example.


Example 1:

dot((20,0));

Output 1: [asy]dot((20,0));[/asy]


Example 2:

draw((0,0)--(50,0),BeginArrow);
draw((0,-10)--(50,-10),MidArrow);
draw((0,-20)--(50,-20),EndArrow);
draw((0,-30)--(50,-30),Arrows);

Output 2: [asy] size(75);draw((0,0)--(50,0),BeginArrow);  draw((0,-10)--(50,-10),MidArrow);  draw((0,-20)--(50,-20),EndArrow);  draw((0,-30)--(50,-30),Arrows);[/asy]


Example 3:

draw((0,0)--(50,0));
arrow((30,0),dir(180),green);

Output 3: Figure4.gif


Example 4:

import math;
pair A,B,C,D,E;
A=(0,0); C=(50,0); B=(10,10); D=(40,20);
E=extension(A,B,C,D);  // math - extension
// extension(A,B,C,D) returns the intersection of lines AB and CD
draw(A--B); draw(C--D);
draw(B--E--D,orange);

Output 4: Figure5.gif


Example 5:

import graph;
draw(Circle((0,0),20)); // graph - Circle

Output 5: Figure6.gif


Example 6:

path p=(0,0)..(20,15)..(40,-5)..(50,0);
draw(p);
draw(rotate(90)*p,green);
draw(rotate(180,(-5,0))*p,orange);
draw(shift((5,20))*p,magenta);
draw(shift((0,-25))*yscale(1.4)*p,red);

Output 6: Figure7.gif


Example 7:

import olympiad;
unitsize(50);
pair A,B,C,O,I;
A=origin; B=2*right; C=1.5*dir(70);
O=circumcenter(A,B,C); // olympiad - circumcenter
I=incenter(A,B,C); // olympiad - incenter
draw(A--B--C--cycle);
dot(O);
dot(I);
draw(circumcircle(A,B,C)); // olympiad - circumcircle
draw(incircle(A,B,C)); // olympiad - incircle
label("$I$",I,W);
label("$O$",O,S);

Output 7: [asy]  import olympiad;  size(75);  pair A,B,C,O,I;  A=origin; B=2*right; C=1.5*dir(70);  O=circumcenter(A,B,C); /* olympiad - circumcenter */  I=incenter(A,B,C); /* olympiad - incenter */  draw(A--B--C--cycle);  dot(O);  dot(I);  draw(circumcircle(A,B,C)); /* olympiad - circumcircle */  draw(incircle(A,B,C)); /* olympiad - incircle */  label("$I$",I,W);  label("$O$",O,S); [/asy]


Example 8:

import three;
unitsize(1cm);
size(50);
currentprojection=orthographic(1/2,-1,1/2); // three - currentprojection, orthographic
draw((0,0,0)--(1,0,0)--(1,1,0)--(0,1,0)--cycle,red);
draw((0,0,0)--(0,0,1));
draw((0,1,0)--(0,1,1));
draw((1,1,0)--(1,1,1));
draw((1,0,0)--(1,0,1));
draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);

Output 9: [asy] import three;  unitsize(1cm);  size(50);  currentprojection=orthographic(1/2,-1,1/2); /* three - currentprojection, orthographic */  draw((0,0,0)--(1,0,0)--(1,1,0)--(0,1,0)--cycle,red);  draw((0,0,0)--(0,0,1));  draw((0,1,0)--(0,1,1));  draw((1,1,0)--(1,1,1));  draw((1,0,0)--(1,0,1));  draw((0,0,1)--(1,0,1)--(1,1,1)--(0,1,1)--cycle,green);[/asy]

Example 10:

"Output 10:" [asy] unitsize(1cm); pair A1=(2,5),A2=(10,1); pair B1=(1,1),B2=(10,5); pair C1=(1,2),C2=(10,3.5); path curveI = A1 .. controls (6,5) .. A2; path curveII = B1 .. controls (3,4) .. B2; path curveIII = C1 .. controls (3,3) and (7,0) .. (9,2) ..controls C2 .. C2; fill(buildcycle(curveI,reverse(curveIII),curveII),yellow); draw(curveI, red); draw(curveII, blue); draw(curveIII, green); pair ip_1 = intersectionpoint(curveI, curveII); pair ip_2 = intersectionpoint(curveII, curveIII); pair ip_3 = intersectionpoint(curveI, curveIII); label("$A_1$",A1,1.5W,red); label("$A_2$",A2,1SE,red); label("$B_1$",B1,1.5SSW,heavyblue); label("$B_2$",B2,1.12E,heavyblue); label("$C_1$",C1,1.5W,heavygreen); label("$C_2$",C2,1.25E,heavygreen); dot(ip_1^^ip_2^^ip_3); label("$S_1$",ip_1, 1.5*NNE); label("$S_2$",ip_2, 1.5*SSE); label("$S_3$",ip_3, 1.85*dir(-93)); dot(A1^^A2, mediumred); dot(B1^^B2, mediumblue); dot(C1^^C2, mediumgreen); [/asy]


Examples in Forum

Clicking on the images in the following examples will show you the Asymptote source.

Triangles, lines, tick marks, angle marks


See Also

Many more Asymptote examples

Next: Macros and Packages