aea82e004a
Previously, `xLine`, `xLineTo`, `yLine` and `yLineTo` used positional arguments. Now: - `xLineTo` and `yLineTo` have been removed - `xLine` and `yLine` both use keyword arguments: - `length`, optional (i.e. a relative distance along the X or Y axis) - `endAbsolute` optional (i.e. an absolute point along the X or Y axis) - `tag` optional - Exactly one of `length` or `endAbsolute` must be given. Not both, not neither. For example: ``` // Old way |> xLine(6.04, %) |> yLineTo(20, %, $base) // New way |> xLine(length = 6.04) |> yLine(endAbsolute = 20, tag = $base) ``` This also improves some of the general-purpose keyword arguments code in modeling app's TS codebase.
153 lines
4.1 KiB
Plaintext
153 lines
4.1 KiB
Plaintext
// Exhaust Manifold
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// A welded exhaust header for an inline 4-cylinder engine
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// Set Units
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@settings(defaultLengthUnit = in)
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// Define Constants
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primaryTubeDiameter = 1.625
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wallThickness = 0.080
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plateHeight = 0.125
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bendRadius = 3
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// Create a function to draw each primary tube with specified lengths and angles
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fn primaryTube(n, angle001, length001, length002, length003) {
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// Create an index for the function
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pos001 = n * 2
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// Define a plane for each sweep path defined by an angle
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sweepPlane = {
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plane = {
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origin = [pos001, 0.0, 0],
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xAxis = [
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sin(toRadians(-angle001)),
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cos(toRadians(-angle001)),
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0.0
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],
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yAxis = [0.0, 0.0, 1.0],
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zAxis = [1.0, 0.0, 0.0]
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}
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}
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// Draw a path for each sweep
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sweepPath = startSketchOn(sweepPlane)
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|> startProfileAt([0, plateHeight], %)
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|> line(end = [0, length001])
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|> tangentialArc({ offset = -80, radius = bendRadius }, %, $arc01)
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|> angledLine({
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angle = tangentToEnd(arc01),
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length = length002
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}, %)
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|> tangentialArc({ offset = 85, radius = bendRadius }, %, $arc02)
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|> angledLine({
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angle = tangentToEnd(arc02),
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length = length003
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}, %)
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// Create the cross section of each tube and sweep them
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sweepProfile = startSketchOn('XY')
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|> circle(
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center = [pos001, 0],
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radius = primaryTubeDiameter / 2
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)
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|> hole(circle(
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center = [pos001, 0],
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radius = primaryTubeDiameter / 2 - wallThickness
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), %)
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|> sweep(path = sweepPath)
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return { }
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}
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// Draw a primary tube for each cylinder with specified lengths and angles
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primaryTube(0, 0, 3, 6, 5)
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primaryTube(1, 1, 3, 6, 5)
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primaryTube(2, 24.3, 5, 5, 3)
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primaryTube(3, 25.2, 5, 5, 3)
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// Create the mounting flange for the header
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flangeSketch = startSketchOn('XY')
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|> startProfileAt([3 + 1.3, -1.25], %)
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|> xLine(length = -2.6, tag = $seg01)
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|> tangentialArc({ radius = .3, offset = -40 }, %)
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|> tangentialArc({ radius = .9, offset = 80 }, %)
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|> tangentialArc({ radius = .3, offset = -40 }, %)
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|> xLine(length = -1.4, tag = $seg03)
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|> yLine(length = segLen(seg01), tag = $seg04)
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|> xLine(length = 3.1, tag = $seg05)
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|> tangentialArc({ radius = .3, offset = -40 }, %)
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|> tangentialArc({ radius = 1.5, offset = 80 }, %)
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|> tangentialArc({ radius = .3, offset = -40 }, %)
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|> xLine(length = segLen(seg05), tag = $seg07)
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|> yLine(endAbsolute = profileStartY(%), tag = $seg08)
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|> xLine(length = -segLen(seg03), tag = $seg09)
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|> tangentialArc({ radius = .3, offset = -40 }, %)
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|> tangentialArc({ radius = .9, offset = 80 }, %)
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|> tangentialArcTo([profileStartX(%), profileStartY(%)], %)
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|> close()
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// Create openings in the flange to accommodate each tube
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|> hole(circle(
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center = [0, 0],
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radius = primaryTubeDiameter / 2 - wallThickness
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), %)
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|> hole(circle(
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center = [2, 0],
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radius = primaryTubeDiameter / 2 - wallThickness
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), %)
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|> hole(circle(
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center = [4, 0],
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radius = primaryTubeDiameter / 2 - wallThickness
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), %)
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|> hole(circle(
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center = [6, 0],
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radius = primaryTubeDiameter / 2 - wallThickness
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), %)
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// Add mounting holes to the flange
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|> hole(circle(
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center = [
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-primaryTubeDiameter * .6,
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-primaryTubeDiameter * .6
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],
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radius = 0.25 / 2
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), %)
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|> hole(circle(
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center = [
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primaryTubeDiameter * .6,
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primaryTubeDiameter * .6
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],
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radius = 0.25 / 2
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), %)
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|> hole(circle(
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center = [
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3 * 2 - (primaryTubeDiameter * .6),
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primaryTubeDiameter * .6
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],
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radius = 0.25 / 2
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), %)
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|> hole(circle(
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center = [
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3 * 2 + primaryTubeDiameter * .6,
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-primaryTubeDiameter * .6
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],
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radius = 0.25 / 2
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), %)
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// Extrude the flange and fillet the edges
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|> extrude(length = plateHeight)
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|> fillet(
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radius = 1.5,
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tags = [
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getNextAdjacentEdge(seg04),
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getNextAdjacentEdge(seg07)
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]
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)
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|> fillet(
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radius = .25,
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tags = [
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getNextAdjacentEdge(seg03),
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getNextAdjacentEdge(seg08)
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]
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)
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