138 lines
343 KiB
Markdown
138 lines
343 KiB
Markdown
---
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title: "extrude"
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subtitle: "Function in std::sketch"
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excerpt: "Extend a 2-dimensional sketch through a third dimension in order to create new 3-dimensional volume, or if extruded into an existing volume, cut into an existing solid."
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layout: manual
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---
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Extend a 2-dimensional sketch through a third dimension in order to create new 3-dimensional volume, or if extruded into an existing volume, cut into an existing solid.
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```kcl
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extrude(
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@sketches: [Sketch; 1+],
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length: number(Length),
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symmetric?: bool,
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bidirectionalLength?: number(Length),
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tagStart?: tag,
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tagEnd?: tag,
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): [Solid; 1+]
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```
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You can provide more than one sketch to extrude, and they will all be
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extruded in the same direction.
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### Arguments
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| Name | Type | Description | Required |
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|----------|------|-------------|----------|
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| `sketches` | [`[Sketch; 1+]`](/docs/kcl-std/types/std-types-Sketch) | Which sketch or sketches should be extruded. | Yes |
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| `length` | [`number(Length)`](/docs/kcl-std/types/std-types-number) | How far to extrude the given sketches. | Yes |
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| `symmetric` | [`bool`](/docs/kcl-std/types/std-types-bool) | If true, the extrusion will happen symmetrically around the sketch. Otherwise, the extrusion will happen on only one side of the sketch. | No |
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| `bidirectionalLength` | [`number(Length)`](/docs/kcl-std/types/std-types-number) | If specified, will also extrude in the opposite direction to 'distance' to the specified distance. If 'symmetric' is true, this value is ignored. | No |
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| `tagStart` | [`tag`](/docs/kcl-std/types/std-types-tag) | A named tag for the face at the start of the extrusion, i.e. the original sketch. | No |
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| `tagEnd` | [`tag`](/docs/kcl-std/types/std-types-tag) | A named tag for the face at the end of the extrusion, i.e. the new face created by extruding the original sketch. | No |
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### Returns
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[`[Solid; 1+]`](/docs/kcl-std/types/std-types-Solid)
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### Examples
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```kcl
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example = startSketchOn(XZ)
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|> startProfile(at = [0, 0])
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|> line(end = [10, 0])
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|> arc(
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angleStart = 120,
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angleEnd = 0,
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radius = 5,
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)
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|> line(end = [5, 0])
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|> line(end = [0, 10])
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|> bezierCurve(
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control1 = [-10, 0],
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control2 = [2, 10],
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end = [-5, 10],
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)
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|> line(end = [-5, -2])
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|> close()
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|> extrude(length = 10)
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```
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```kcl
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exampleSketch = startSketchOn(XZ)
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|> startProfile(at = [-10, 0])
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|> arc(
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angleStart = 120,
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angleEnd = -60,
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radius = 5,
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)
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|> line(end = [10, 0])
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|> line(end = [5, 0])
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|> bezierCurve(
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control1 = [-3, 0],
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control2 = [2, 10],
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end = [-5, 10],
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)
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|> line(end = [-4, 10])
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|> line(end = [-5, -2])
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|> close()
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example = extrude(exampleSketch, length = 10)
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```
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```kcl
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exampleSketch = startSketchOn(XZ)
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|> startProfile(at = [-10, 0])
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|> arc(
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angleStart = 120,
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angleEnd = -60,
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radius = 5,
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)
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|> line(end = [10, 0])
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|> line(end = [5, 0])
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|> bezierCurve(
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control1 = [-3, 0],
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control2 = [2, 10],
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end = [-5, 10],
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)
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|> line(end = [-4, 10])
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|> line(end = [-5, -2])
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|> close()
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example = extrude(exampleSketch, length = 20, symmetric = true)
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```
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```kcl
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exampleSketch = startSketchOn(XZ)
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|> startProfile(at = [-10, 0])
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|> arc(
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angleStart = 120,
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angleEnd = -60,
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radius = 5,
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)
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|> line(end = [10, 0])
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|> line(end = [5, 0])
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|> bezierCurve(
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control1 = [-3, 0],
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control2 = [2, 10],
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end = [-5, 10],
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)
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|> line(end = [-4, 10])
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|> line(end = [-5, -2])
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|> close()
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example = extrude(exampleSketch, length = 10, bidirectionalLength = 50)
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```
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