func drawPoint(ctxt draw2d.GraphicContext, g *geos.Geometry, c color.Color, radius float64, scale func(x, y float64) (float64, float64)) {
if c != nil {
ctxt.SetFillColor(c)
}
x, err := g.X()
if err != nil {
log.Fatal(err)
}
y, err := g.Y()
if err != nil {
log.Fatal(err)
}
x, y = scale(x, y)
ctxt.MoveTo(x, y)
ctxt.ArcTo(x, y, radius, radius, 0, 2*math.Pi)
ctxt.Fill()
}
