Ply file loading

// import load ply
var LoadPly = Java.type("trace.graphics.LoadPly")

// load something
var ply = new LoadPly("/Users/marc/Desktop/Organ_800k_text.ply")

// make a layer
var layer = _.stage.withName("asdf")

// that's fully 3d
layer.is3D = true
layer.vrDefaults()
layer.makeKeyboardCamera()

var f = new FLine()

// for all of the points...
for(var p of ply.points)
{
	f.moveTo(p.at.y, p.at.x, p.at.z)
	f.last().color = vec(p.color.x, p.color.y, p.color.z, 1)
}

f.pointed=true
f.pointSize=0.3
layer.lines.f = f