A parametric modern pergola with vertical posts, surrounding beams, and evenly spaced roof slats. Designed for garden, patio, or backyard use. Ideal for architectural visualization and parametric prototyping.

// Stylized Pergola
// A parametric modern pergola with vertical posts, surrounding beams, and evenly spaced roof slats. Designed for garden, patio, or backyard use. Ideal for architectural visualization and parametric prototyping.
// Categories: Construction

@settings(defaultLengthUnit = mm, kclVersion = 1.0)

// Overall dimensions
pergolaLength = 4000 // length along the main axis
pergolaWidth = 3000 // width across the short axis
pergolaHeight = 2400 // total height to top of beams


// Structural sizes
beamHeight = 250 // vertical size of beams
beamWidth = 120 // horizontal thickness of beams
postSize = beamWidth // square posts
postLength = pergolaHeight - beamHeight

// Roof slats
slatCount = 16
slatHeight = beamHeight // same as beam for a solid top edge
slatThickness = 50
slatSpacing = (pergolaLength - (beamWidth * 2)) / (slatCount + 1) // spacing between slats


// Post profile
postSketch = startSketchOn(XY)
postProfile = startProfile(postSketch, at = [-postSize / 2, -postSize / 2])
  |> xLine(length = postSize)
  |> yLine(length = postSize)
  |> xLine(length = -postSize)
  |> close()
post = extrude(postProfile, length = postLength)
  |> appearance(%, color = "#a0825c")

// Corner posts
posts = translate(post, x = (pergolaLength - postSize) / 2, y = (pergolaWidth - postSize) / 2)
  |> patternLinear3d(
       %,
       instances = 2,
       distance = pergolaLength - postSize,
       axis = [-1, 0, 0],
     )
  |> patternLinear3d(
       %,
       instances = 2,
       distance = pergolaWidth - postSize,
       axis = [0, -1, 0],
     )

// Long beams (front and back)
longBeamSketch = startSketchOn(XY)
longBeamProfile = startProfile(longBeamSketch, at = [-pergolaLength / 2, -beamWidth / 2])
  |> xLine(length = pergolaLength)
  |> yLine(length = beamWidth)
  |> xLine(length = -pergolaLength)
  |> close()
longBeam = extrude(longBeamProfile, length = beamHeight)
  |> translate(z = postLength)
  |> appearance(%, color = "#a0825c")

longBeams = translate(longBeam, y = pergolaWidth / 2 - (beamWidth / 2))
  |> patternLinear3d(
       %,
       instances = 2,
       distance = pergolaWidth - beamWidth,
       axis = [0, -1, 0],
     )

// Side beams (left and right)
sideBeamSketch = startSketchOn(XY)
sideBeamProfile = startProfile(
       sideBeamSketch,
       at = [
         -beamWidth / 2,
         -(pergolaWidth - (beamWidth * 2)) / 2
       ],
     )
  |> xLine(length = beamWidth)
  |> yLine(length = pergolaWidth - (beamWidth * 2))
  |> xLine(length = -beamWidth)
  |> close()
sideBeam = extrude(sideBeamProfile, length = beamHeight)
  |> translate(z = postLength)
  |> appearance(%, color = "#a0825c")

sideBeams = translate(sideBeam, x = pergolaLength / 2 - (beamWidth / 2))
  |> patternLinear3d(
       %,
       instances = 2,
       distance = pergolaLength - beamWidth,
       axis = [-1, 0, 0],
     )

// Slat profile (crosswise)
slatSketch = startSketchOn(XY)
slatProfile = startProfile(
       slatSketch,
       at = [
         -slatThickness / 2,
         -(pergolaWidth - (beamWidth * 2)) / 2
       ],
     )
  |> xLine(length = slatThickness)
  |> yLine(length = pergolaWidth - (beamWidth * 2))
  |> xLine(length = -slatThickness)
  |> close()
slat = extrude(slatProfile, length = slatHeight)
  |> translate(z = postLength)
  |> appearance(%, color = "#a0825c")

slats = translate(slat, x = -pergolaLength / 2 + beamWidth + slatSpacing)
  |> patternLinear3d(
       %,
       instances = slatCount,
       distance = slatSpacing,
       axis = [1, 0, 0],
     )


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