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

/**
    Helps draw center lines along a plank of wood.
    As a bonus it also helps draw third and quarter marks too.
*/
class CenterGuage : Model {

    var maxPlankWidth = 125 // Min = 67
    var pinDiameter = 13
    var bodyHeight = 4.0
    var pencilHoleDiameter = 2
    var bodyWidth = 18
    var pinHeight = 10
    // Bolt head diameter, bolt shaft diameter and height of the bolt head. (Plus some slack).
    var boltSize = Vector3(12.0, 6.5, 5.0)

    override fun build() : Shape3d {
        val pinDist = maxPlankWidth - pinDiameter

        val nubHeight = bodyHeight + 5.5
        val pinHole = Circle( 10 ).chamferedExtrude( nubHeight, 0, 1 ) remove
            (
                Cylinder( 20, boltSize.y/2 ).center()  +
                Circle( boltSize.x/2 ).sides(6).extrude( boltSize.z ).topTo( nubHeight+0.1 )
            )
        val pinHoles = pinHole.translateX( pinDist/2 ).mirrorX().also().withCavities()

        val pencilHoles = pencilHole( 2 ) + pencilHole( 3 ).mirrorX() + pencilHole(4)

        val end = Circle( bodyWidth/2 ).translateX( pinDist / 2 )
        val body2d = (end hull end.mirrorX())
    
        val body = body2d.chamferedExtrude( bodyHeight, 1 )

        val hook = (
                Circle( 7 ) - Circle( 4 )
            )
            .extrude(3).color("yellow").darker()
            .rightTo( body.right + 10 )
        val result = (body and pinHoles) - pencilHoles + hook

        // Using a margin, so that the Ears extension will no include the hook.
        return result.margin( Vector3(0,0,0), Vector3(-10,0,0) )
    }

    @Piece( slice="brimWidth=4" )
    fun pin() : Shape3d {
        return Cylinder( pinHeight, pinDiameter / 2 ) - Cylinder( 100, 3 ).center()
    }

    fun pencilHole( denominator : int ) : Shape3d {
        val pinDist = maxPlankWidth - pinDiameter

        val pencilHole = Cylinder( 10, pencilHoleDiameter/2 ).sides(20) +
            Cylinder( bodyHeight, pencilHoleDiameter/2, bodyHeight ).sides(20).bottomTo(0.2)
        
        val label = if ( maxPlankWidth < 80 ) {
            Cube(0)
       } else {
            Square( 2, 4 ).tileX( denominator, 2 )
            .centerX().backTo( bodyWidth/2 )
            .extrude( 0.6)
            .topTo( bodyHeight + 0.01 )
        }
            
        return (pencilHole + label).translateX( -pinDist/2 + pinDist / denominator )
    }

}