带坐标轴的几何画板

 1 ---
 2 > id: demo
 3 
 4 Here is a geopad with axes and coordinate system
 5 
 6     figure
 7       x-geopad(width=600 height=400 x-axis="-6,6,1" y-axis="-4,4,1" axes grid padding=5): svg
 8         circle.move.green(name="p" cx=2 cy=2)
 9         path.green(x="segment(point(0,0),p)")
10         circle.red(x="complexRoot(p,3,0)" name="r0")
11         circle.red(x="complexRoot(p,3,1)" name="r1")
12         circle.red(x="complexRoot(p,3,2)" name="r2")
13         path.red(x="polygon(r0,r1,r2)")

 1 import {Complex, Point} from ‘@mathigon/fermat‘;
 2 import {Step} from ‘../shared/types‘;
 3 
 4 
 5 export function demo($step: Step) {
 6   $step.model.complexRoot = (p: Point, n: number, i: number) => {
 7     const c = new Complex(p.x, p.y);
 8     const root = c.root(n, i);
 9     return new Point(root.re, root.im);
10   };
11 }