import uk.co.nickthecoder.foocad.smartextrusion.v1.*
import static uk.co.nickthecoder.foocad.smartextrusion.v1.SmartExtrusion.*
import static uk.co.nickthecoder.foocad.layout.v1.Layout2d.*
import static uk.co.nickthecoder.foocad.layout.v1.Layout3d.*
import uk.co.nickthecoder.foocad.extras.v1.*
import static uk.co.nickthecoder.foocad.extras.v1.Extras.*

class Einstein : Model {

    @Custom
    val length = 20

    @Custom
    var thickness = 2

    @Custom
    var chamfer = 0.5
    
    @Custom
    var round = 0.5

    @Custom
    var clearance = 0.3

    meth hatShape() : Shape2d {
        val short = length / (2*Math.cos( Math.PI/6 ))
        var direction = Vector2(1,0)
        val a = 60

        return PolygonBuilder().apply {
            moveTo(0,0)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-60)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-90)
            lineBy( direction * short )

            direction = direction.rotateDegrees(-a)
            lineBy( direction * short )

            direction = direction.rotateDegrees(90)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-a)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-90)
            lineBy( direction * short )

            direction = direction.rotateDegrees(a)
            lineBy( direction * short )

            direction = direction.rotateDegrees(-90)
            lineBy( direction * length )

            direction = direction.rotateDegrees(a)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-90)
            lineBy( direction * short )

            direction = direction.rotateDegrees(-a)
            lineBy( direction * short*2 )

        }.build()
    }

    meth kiteLines( thickness : double ) : Shape2d {
        val short = length / (2*Math.cos( Math.PI/6 ))
        var direction = Vector2(1,0).rotateDegrees(-120)

        val path1 = PolygonBuilder().apply {
            moveTo( length, 0 )
            lineBy( direction * length )
            
            direction = direction.rotateDegrees(-90)
            lineBy( direction * short )

            direction = direction.rotateDegrees(-60)
            lineBy( direction * short )
            
            direction = direction.rotateDegrees(90)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-120)
            lineBy( direction * length )
            
        }.buildPath()

        val path2 = PolygonBuilder().apply {
            moveTo( -length, 0 )

            direction = Vector2(1,0).rotateDegrees(-60)
            lineBy( direction * length )

            direction = direction.rotateDegrees(-90)
            lineBy( direction * short )

        }.buildPath()

        val path3 = PolygonBuilder().apply {
            moveTo( 0, short )

            direction = Vector2(1,0).rotateDegrees(-150)
            lineBy( direction * short )

            direction = direction.rotateDegrees(90)
            lineBy( direction * length )

        }.buildPath()

        return path1.thickness(thickness) + path2.thickness(thickness) + path3.thickness(thickness)
    }

    meth hat() : Shape3d {
        val plainShape = hatShape().offset(-clearance)
        val shape = plainShape.intersection( plainShape.roundAllCorners(round) )

        val main = shape.smartExtrude( thickness )
            .edges( Chamfer( chamfer ) )

        val lines = kiteLines( 0.5 )
            .smartExtrude( chamfer )
                .top( Chamfer( chamfer -0.01).reverse() )
            .topTo(main.top + 0.01)

        return main - lines
    }
    
    override fun build() : Shape3d {
        return hat() 
    }
}