import static uk.co.nickthecoder.foocad.layout.v1.Layout2d.*
import static uk.co.nickthecoder.foocad.layout.v1.Layout3d.*

class TwoPieceSphere : Model {
    
    @Custom
    var diameter = 80

    @Custom
    var thickness = 3

    // Extra thickness around the equator to glue the two pieces.
    @Custom
    var joinThickness = 12

    // The overhang angle where an internal flat spot is placed.
    @Custom
    var overhang = 60
    
    @Custom
    var holeCount = 10

    @Custom
    var holeD = 4

    fun outerSphere() = Sphere( diameter/2 )

    fun hemiSphere() : Shape3d {
        val flat = Cube( diameter ).centerXY()
            .translateZ(Degrees.sin(overhang)* diameter/2)

        val sphere = outerSphere() -
            (Sphere( diameter/2 - thickness ) - flat)
        val result = sphere / Cube( diameter+2 ).centerXY()

        return result
    }

    fun join() : Shape3d {
        if ( joinThickness <= thickness ) return Cube(0)

        val spare = joinThickness - thickness
        val spareR = diameter/2 - thickness- spare/2

        val hoop = Circle( diameter/2-thickness/2 ) - Circle( diameter/2-joinThickness )

        val solid = hoop.extrude( thickness )

        if ( holeCount <= 0 || holeD <= 0 ) return solid

        val hole = Cylinder.hole( thickness*2+0.02, holeD/2 ).center().translateX(spareR)

        val holes = hole.repeatAroundZ( holeCount )

        return solid - holes
    }

    override fun build() : Shape3d {
        return hemiSphere() + join()
    }
}