annotate scraps/plot.yeti @ 254:5eb57c649de0 sparse

Using hashes is simpler, but turns out to be mostly no faster and sometimes much slower. Not one to merge back.

module scraps.plot;

import org.jzy3d.chart: Chart;
import org.jzy3d.plot3d.rendering.canvas: Quality;
import org.jzy3d.maths: Coord3d;
import org.jzy3d.plot3d.primitives: MultiColorScatter;
import org.jzy3d.colors.colormaps: ColorMapRainbow;
import org.jzy3d.colors: ColorMapper;
import org.jzy3d.colors: Color;
import org.jzy3d.chart: ChartLauncher;

points = new Coord3d[1000];
r () = Math#random() - 0.5; for [0..999] do i: points[i] := new Coord3d(r(),r(),r()) done;
m = new MultiColorScatter(points, new ColorMapper(new ColorMapRainbow (), -0.5, 0.5));
c = new Chart(Quality#Advanced);
c#getAxeLayout()#setMainColor(Color#WHITE);
c#getView()#setBackgroundColor(Color#BLACK);
c#getScene()#add(m);
ChartLauncher#openChart(c);