enclosure

// Enclosure
// An enclosure body and sealing lid for storing items

// Set units
@settings(defaultLengthUnit = mm)

length = 175
width = 125
height = 70
wallThickness = 3
holeDia = 4

// Model a box with base enclosure dimensions
sketch001 = startSketchOn('XY')
  |> startProfileAt([0, 0], %)
  |> angledLine([0, width], %, $rectangleSegmentA001)
  |> angledLine([
       segAng(rectangleSegmentA001) + 90,
       length
     ], %, $rectangleSegmentB001)
  |> angledLine([
       segAng(rectangleSegmentA001),
       -segLen(rectangleSegmentA001)
     ], %, $rectangleSegmentC001)
  |> line(endAbsolute = [profileStartX(%), profileStartY(%)], tag = $rectangleSegmentD001)
  |> close()
extrude001 = extrude(sketch001, length = height)
  |> fillet(
       radius = wallThickness * 4,
       tags = [
         getNextAdjacentEdge(rectangleSegmentA001),
         getNextAdjacentEdge(rectangleSegmentB001),
         getNextAdjacentEdge(rectangleSegmentC001),
         getNextAdjacentEdge(rectangleSegmentD001)
       ]
     )

  // Apply a shell to the enclosure base to create the internal storage
  |> shell(
       faces = ["end"],
       thickness = wallThickness
     )

// Define a function to create the internal structure to secure a fastener at each corner
fn function001(originStart) {
  // Create a plane to sketch on shell interior
  plane001 = {
    plane = {
      origin = [0.0, 0.0, wallThickness],
      xAxis = [1.0, 0.0, 0.0],
      yAxis = [0.0, 1.0, 0.0],
      zAxis = [0.0, 0.0, 1.0]
    }
  }

  // Create a pillar with a fasterner hole at the center
  sketch002 = startSketchOn(plane001)
    |> circle({
         center = [originStart[0], originStart[1]],
         radius = holeDia + wallThickness
       }, %)
    |> hole(circle({
         center = [originStart[0], originStart[1]],
         radius = holeDia
       }, %), %)
  extrude002 = extrude(sketch002, length = height - wallThickness)

  return extrude002
}

// Place the internal pillar at each corner
function001([
  wallThickness * 3 + holeDia,
  wallThickness * 3 + holeDia
])
function001([
  wallThickness * 3 + holeDia,
  length - (wallThickness * 3 + holeDia)
])
function001([
  width - (wallThickness * 3 + holeDia),
  wallThickness * 3 + holeDia
])
function001([
  width - (wallThickness * 3 + holeDia),
  length - (wallThickness * 3 + holeDia)
])

// Define lid position and outer surface
sketch003 = startSketchOn('XY')
  |> startProfileAt([width * 1.2, 0], %)
  |> angledLine([0, width], %, $rectangleSegmentA002)
  |> angledLine([
       segAng(rectangleSegmentA001) + 90,
       length
     ], %, $rectangleSegmentB002)
  |> angledLine([
       segAng(rectangleSegmentA001),
       -segLen(rectangleSegmentA001)
     ], %, $rectangleSegmentC002)
  |> line(endAbsolute = [profileStartX(%), profileStartY(%)], tag = $rectangleSegmentD002)
  |> close()
  |> hole(circle({
       center = [
         width * 1.2 + wallThickness * 3 + holeDia,
         wallThickness * 3 + holeDia
       ],
       radius = holeDia
     }, %), %)
  |> hole(circle({
       center = [
         width * 1.2 + wallThickness * 3 + holeDia,
         length - (wallThickness * 3 + holeDia)
       ],
       radius = holeDia
     }, %), %)
  |> hole(circle({
       center = [
         width * 2.2 - (wallThickness * 3 + holeDia),
         wallThickness * 3 + holeDia
       ],
       radius = holeDia
     }, %), %)
  |> hole(circle({
       center = [
         width * 2.2 - (wallThickness * 3 + holeDia),
         length - (wallThickness * 3 + holeDia)
       ],
       radius = holeDia
     }, %), %)
extrude003 = extrude(sketch003, length = wallThickness)
  |> fillet(
       radius = wallThickness * 4,
       tags = [
         getNextAdjacentEdge(rectangleSegmentA002),
         getNextAdjacentEdge(rectangleSegmentB002),
         getNextAdjacentEdge(rectangleSegmentC002),
         getNextAdjacentEdge(rectangleSegmentD002)
       ]
     )

// Define lid inner and sealing surfaces
sketch004 = startSketchOn(extrude003, 'END')
  |> startProfileAt([
       width * 1.2 + wallThickness,
       wallThickness
     ], %)
  |> angledLine([0, width - (2 * wallThickness)], %, $rectangleSegmentA003)
  |> angledLine([
       segAng(rectangleSegmentA003) + 90,
       length - (2 * wallThickness)
     ], %, $rectangleSegmentB003)
  |> angledLine([
       segAng(rectangleSegmentA003),
       -segLen(rectangleSegmentA003)
     ], %, $rectangleSegmentC003)
  |> line(endAbsolute = [profileStartX(%), profileStartY(%)], tag = $rectangleSegmentD003)
  |> close()
  |> hole(circle({
       center = [
         width * 1.2 + wallThickness * 3 + holeDia,
         wallThickness * 3 + holeDia
       ],
       radius = holeDia + wallThickness
     }, %), %)
  |> hole(circle({
       center = [
         width * 1.2 + wallThickness * 3 + holeDia,
         length - (wallThickness * 3 + holeDia)
       ],
       radius = holeDia + wallThickness
     }, %), %)
  |> hole(circle({
       center = [
         width * 2.2 - (wallThickness * 3 + holeDia),
         wallThickness * 3 + holeDia
       ],
       radius = holeDia + wallThickness
     }, %), %)
  |> hole(circle({
       center = [
         width * 2.2 - (wallThickness * 3 + holeDia),
         length - (wallThickness * 3 + holeDia)
       ],
       radius = holeDia + wallThickness
     }, %), %)
extrude004 = extrude(sketch004, length = wallThickness)
  |> fillet(
       radius = wallThickness * 3,
       tags = [
         getNextAdjacentEdge(rectangleSegmentA003),
         getNextAdjacentEdge(rectangleSegmentB003),
         getNextAdjacentEdge(rectangleSegmentC003),
         getNextAdjacentEdge(rectangleSegmentD003)
       ]
     )