---
title: "KCL Standard Library"
excerpt: "Documentation for the KCL standard library for the Zoo Design Studio."
layout: manual
---

## Table of Contents

### Language

* [`Types`](kcl/types)
* [`Modules`](kcl/modules)
* [`Settings`](kcl/settings)
* [`Known Issues`](kcl/known-issues)

### Functions

* **std**
  * [`angledLine`](kcl/angledLine)
  * [`angledLineThatIntersects`](kcl/angledLineThatIntersects)
  * [`appearance`](kcl/appearance)
  * [`arc`](kcl/arc)
  * [`assert`](kcl/assert)
  * [`assertIs`](kcl/assertIs)
  * [`bezierCurve`](kcl/bezierCurve)
  * [`circleThreePoint`](kcl/circleThreePoint)
  * [`clone`](kcl/clone)
  * [`close`](kcl/close)
  * [`extrude`](kcl/extrude)
  * [`getCommonEdge`](kcl/getCommonEdge)
  * [`getNextAdjacentEdge`](kcl/getNextAdjacentEdge)
  * [`getOppositeEdge`](kcl/getOppositeEdge)
  * [`getPreviousAdjacentEdge`](kcl/getPreviousAdjacentEdge)
  * [`helix`](kcl/functions/std-helix)
  * [`intersect`](kcl/intersect)
  * [`involuteCircular`](kcl/involuteCircular)
  * [`lastSegX`](kcl/lastSegX)
  * [`lastSegY`](kcl/lastSegY)
  * [`legAngX`](kcl/legAngX)
  * [`legAngY`](kcl/legAngY)
  * [`legLen`](kcl/legLen)
  * [`line`](kcl/line)
  * [`loft`](kcl/loft)
  * [`map`](kcl/map)
  * [`offsetPlane`](kcl/functions/std-offsetPlane)
  * [`patternCircular2d`](kcl/patternCircular2d)
  * [`patternCircular3d`](kcl/patternCircular3d)
  * [`patternLinear2d`](kcl/patternLinear2d)
  * [`patternLinear3d`](kcl/patternLinear3d)
  * [`patternTransform`](kcl/patternTransform)
  * [`patternTransform2d`](kcl/patternTransform2d)
  * [`polygon`](kcl/polygon)
  * [`pop`](kcl/pop)
  * [`profileStart`](kcl/profileStart)
  * [`profileStartX`](kcl/profileStartX)
  * [`profileStartY`](kcl/profileStartY)
  * [`push`](kcl/push)
  * [`reduce`](kcl/reduce)
  * [`revolve`](kcl/functions/std-revolve)
  * [`rotate`](kcl/rotate)
  * [`scale`](kcl/scale)
  * [`segAng`](kcl/segAng)
  * [`segEnd`](kcl/segEnd)
  * [`segEndX`](kcl/segEndX)
  * [`segEndY`](kcl/segEndY)
  * [`segLen`](kcl/segLen)
  * [`segStart`](kcl/segStart)
  * [`segStartX`](kcl/segStartX)
  * [`segStartY`](kcl/segStartY)
  * [`startProfile`](kcl/startProfile)
  * [`startSketchOn`](kcl/startSketchOn)
  * [`subtract`](kcl/subtract)
  * [`subtract2d`](kcl/subtract2d)
  * [`sweep`](kcl/sweep)
  * [`tangentToEnd`](kcl/tangentToEnd)
  * [`tangentialArc`](kcl/tangentialArc)
  * [`translate`](kcl/translate)
  * [`union`](kcl/union)
  * [`xLine`](kcl/xLine)
  * [`yLine`](kcl/yLine)
* **std::math**
  * [`abs`](kcl/functions/std-math-abs)
  * [`acos`](kcl/functions/std-math-acos)
  * [`asin`](kcl/functions/std-math-asin)
  * [`atan`](kcl/functions/std-math-atan)
  * [`atan2`](kcl/functions/std-math-atan2)
  * [`ceil`](kcl/functions/std-math-ceil)
  * [`cos`](kcl/functions/std-math-cos)
  * [`floor`](kcl/functions/std-math-floor)
  * [`ln`](kcl/functions/std-math-ln)
  * [`log`](kcl/functions/std-math-log)
  * [`log10`](kcl/functions/std-math-log10)
  * [`log2`](kcl/functions/std-math-log2)
  * [`max`](kcl/functions/std-math-max)
  * [`min`](kcl/functions/std-math-min)
  * [`polar`](kcl/functions/std-math-polar)
  * [`pow`](kcl/functions/std-math-pow)
  * [`rem`](kcl/functions/std-math-rem)
  * [`round`](kcl/functions/std-math-round)
  * [`sin`](kcl/functions/std-math-sin)
  * [`sqrt`](kcl/functions/std-math-sqrt)
  * [`tan`](kcl/functions/std-math-tan)
* **std::sketch**
  * [`circle`](kcl/functions/std-sketch-circle)
  * [`mirror2d`](kcl/functions/std-sketch-mirror2d)
* **std::solid**
  * [`chamfer`](kcl/functions/std-solid-chamfer)
  * [`fillet`](kcl/functions/std-solid-fillet)
  * [`hollow`](kcl/functions/std-solid-hollow)
  * [`shell`](kcl/functions/std-solid-shell)
* **std::units**
  * [`units::toCentimeters`](kcl/functions/std-units-toCentimeters)
  * [`units::toDegrees`](kcl/functions/std-units-toDegrees)
  * [`units::toFeet`](kcl/functions/std-units-toFeet)
  * [`units::toInches`](kcl/functions/std-units-toInches)
  * [`units::toMeters`](kcl/functions/std-units-toMeters)
  * [`units::toMillimeters`](kcl/functions/std-units-toMillimeters)
  * [`units::toRadians`](kcl/functions/std-units-toRadians)
  * [`units::toYards`](kcl/functions/std-units-toYards)

### Constants

* **std**
  * [`END`](kcl/consts/std-END)
  * [`START`](kcl/consts/std-START)
  * [`X`](kcl/consts/std-X)
  * [`XY`](kcl/consts/std-XY)
  * [`XZ`](kcl/consts/std-XZ)
  * [`Y`](kcl/consts/std-Y)
  * [`YZ`](kcl/consts/std-YZ)
  * [`Z`](kcl/consts/std-Z)
* **std::math**
  * [`E`](kcl/consts/std-math-E)
  * [`PI`](kcl/consts/std-math-PI)
  * [`TAU`](kcl/consts/std-math-TAU)
* **std::turns**
  * [`turns::HALF_TURN`](kcl/consts/std-turns-HALF_TURN)
  * [`turns::QUARTER_TURN`](kcl/consts/std-turns-QUARTER_TURN)
  * [`turns::THREE_QUARTER_TURN`](kcl/consts/std-turns-THREE_QUARTER_TURN)
  * [`turns::ZERO`](kcl/consts/std-turns-ZERO)

### Types

See also the [types overview](types)

* **Primitive types**
  * [`End`](kcl/types#End)
  * [`ImportedGeometry`](kcl/types#ImportedGeometry)
  * [`Start`](kcl/types#Start)
  * [`TagDeclarator`](kcl/types#TagDeclarator)
  * [`TagIdentifier`](kcl/types#TagIdentifier)
  * [`any`](kcl/types/std-types-any)
  * [`bool`](kcl/types/std-types-bool)
  * [`number`](kcl/types/std-types-number)
  * [`string`](kcl/types/std-types-string)
  * [`tag`](kcl/types/std-types-tag)
* **std::types**
  * [`Axis2d`](kcl/types/std-types-Axis2d)
  * [`Axis3d`](kcl/types/std-types-Axis3d)
  * [`Edge`](kcl/types/std-types-Edge)
  * [`Face`](kcl/types/std-types-Face)
  * [`Helix`](kcl/types/std-types-Helix)
  * [`Plane`](kcl/types/std-types-Plane)
  * [`Point2d`](kcl/types/std-types-Point2d)
  * [`Point3d`](kcl/types/std-types-Point3d)
  * [`Sketch`](kcl/types/std-types-Sketch)
  * [`Solid`](kcl/types/std-types-Solid)