class BottleTop : Model {
    
    @Custom
    var capHeight = 15

    @Custom
    var capRadius = 36/2

    @Custom
    var extraHeight = 4

    @Custom
    var thickness = 2

    @Custom
    var chamfer = 1.5

    @Custom
    var text = "SLOE  GIN"

    @Custom
    var fontSize = 12

    fun internal() : Shape2d {
        return Circle(capRadius)
    }

    fun exterior() : Shape2d {
        return Circle(capRadius + thickness)
    }

    fun around( str : String ) :Shape3d {
        val text = Text( str, BOLD, fontSize).center()
        val drum = ExtrusionBuilder.drum( text.offset(0.5), text.offset(-0.2), 1 )
        val result = drum.aroundCylinder( capRadius + thickness, true ).color("Red")

        return result.rotateX(90)
    }

    override fun build() : Shape3d {

        val cap = ExtrusionBuilder().apply {
            forward(capHeight) 
            crossSection(internal()) // Inside
            forward(-capHeight)
            crossSection() // Bottom inside
            crossSection(exterior().offset(-chamfer)) // Bottom outside pre chamfer
            forward(chamfer)
            crossSection(exterior()) // Bottom outside post chamfer
            forward(capHeight+extraHeight-chamfer)
            crossSection() // Top pre-chamfer
            forward(chamfer)
            crossSection(exterior().offset(-chamfer)) // Top post chamfer
        }.build()

        val text = around(text).translateZ((capHeight+extraHeight)/2+1)

        // Flip it upside down, so that the top of the cap is on the print bed.
        return (cap + text).rotateX(180).toOriginZ()
    }
}