import static uk.co.nickthecoder.foocad.screws.v1.Screws.*
import static uk.co.nickthecoder.foocad.chamferedextrude.v1.ChamferedExtrude.*

class BallHolderRails : Model {
    
    @Custom
    var railD = 9

    @Custom
    var thickness = 14

    @Custom
    var chamfer = 2

    // The distance of the two rails.
    // Due to a bug in FooCAD, some values fail - just adjust slightly and try again. Soz.
    @Custom
    var spacing = 60

   fun bracket( center : bool ) : Shape3d {

        val doc = SVGParser().parseFile( "ballHolderRails.svg" )
        val scale = spacing / (doc.shapes["rod2"].left - doc.shapes["rod1"].left)

        val profile = doc.shapes["profile"].scale(scale)
        val outside = Polygon(profile.paths[0])
        val inside = Polygon(profile.paths[1]).offset(-chamfer)

        val holeDepth = if(center) thickness else thickness - 2
        val c2 = 1 // if (piece == "center") 1 else 0
        val holes = Circle.hole( railD/2 ).translate( doc.shapes["rod1"].scale(scale).middle )
                .internalChamferedExtrude( holeDepth, 1, c2 ) +
            Circle.hole( railD/2 ).translate( doc.shapes["rod2"].scale(scale).middle )
                .internalChamferedExtrude( holeDepth, 1, c2 )

        val solid = (
            outside.chamferedExtrude( thickness, chamfer ) -
            inside.internalChamferedExtrude( thickness, chamfer ) -
            holes
        ).center().mirrorZ()

        val keyHole = keyholeHanger( 4, 8 )
            .rotateY(90).mirrorX()
            .translate( -solid.size.x/2+0.6-0.9, solid.size.y/3, 0 )

        //return keyHole

        return solid - keyHole // + Sphere( 70/2 ).translate(6,45,0).previewOnly()
    }

    override fun build() : Shape3d {
        return bracket(false)    
    }

}