120 lines
2.9 KiB
Plaintext
120 lines
2.9 KiB
Plaintext
@no_std
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@settings(defaultLengthUnit = mm)
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/// The value of `pi`, Archimedes’ constant (π).
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///
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/// ```
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/// circumference = 70
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///
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/// exampleSketch = startSketchOn(XZ)
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/// |> circle(center = [0, 0], radius = circumference / (2 * PI))
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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export PI = 3.14159265358979323846264338327950288_
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/// The value of Euler’s number `e`.
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> angledLine({
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/// angle = 30,
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/// length = 2 * E ^ 2,
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/// }, %)
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/// |> yLine(endAbsolute = 0)
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 10)
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/// ```
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export E = 2.71828182845904523536028747135266250_
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/// The value of `tau`, the full circle constant (τ). Equal to 2π.
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> angledLine({
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/// angle = 50,
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/// length = 10 * TAU,
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/// }, %)
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/// |> yLine(endAbsolute = 0)
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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export TAU = 6.28318530717958647692528676655900577_
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/// Compute the cosine of a number (in radians).
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> angledLine({
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/// angle = 30,
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/// length = 3 / cos(toRadians(30)),
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/// }, %)
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/// |> yLine(endAbsolute = 0)
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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@(impl = std_rust)
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export fn cos(@num: number(rad)): number(_) {}
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/// Compute the sine of a number (in radians).
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> angledLine({
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/// angle = 50,
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/// length = 15 / sin(toRadians(135)),
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/// }, %)
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/// |> yLine(endAbsolute = 0)
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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@(impl = std_rust)
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export fn sin(@num: number(rad)): number(_) {}
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/// Compute the tangent of a number (in radians).
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> angledLine({
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/// angle = 50,
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/// length = 50 * tan(1/2),
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/// }, %)
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/// |> yLine(endAbsolute = 0)
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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@(impl = std_rust)
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export fn tan(@num: number(rad)): number(_) {}
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/// Convert polar/sphere (azimuth, elevation, distance) coordinates to
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/// cartesian (x/y/z grid) coordinates.
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///
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/// ```
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/// exampleSketch = startSketchOn(XZ)
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/// |> startProfileAt([0, 0], %)
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/// |> line(end = polar(angle = 30, length = 5), tag = $thing)
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/// |> line(end = [0, 5])
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/// |> line(end = [segEndX(thing), 0])
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/// |> line(end = [-20, 10])
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/// |> close()
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///
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/// example = extrude(exampleSketch, length = 5)
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/// ```
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export fn polar(angle: number(deg), length: number(mm)): [number(mm); 2] {
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// TODO could be done by implicit conversion when UoM coercions are activated.
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rads = toRadians(angle)
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x = length * cos(rads)
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y = length * sin(rads)
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return [x, y]
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}
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