PathBuilder

Artifact: androidx.compose.ui:ui-graphics

Added in 1.0.0

Cmn
```
class PathBuilder
```

PathBuilder provides a fluent API to creates a list of PathNode, used to describe a path.

Summary

Public constructors
`PathBuilder()`	Cmn

Public functions
`PathBuilder`	`arcTo( horizontalEllipseRadius: Float, verticalEllipseRadius: Float, theta: Float, isMoreThanHalf: Boolean, isPositiveArc: Boolean, x1: Float, y1: Float )` Add an elliptical arc from the last point to the position (`x1`, `y1`) by adding `PathNode.ArcTo` to `nodes`.	Cmn
`PathBuilder`	`arcToRelative( a: Float, b: Float, theta: Float, isMoreThanHalf: Boolean, isPositiveArc: Boolean, dx1: Float, dy1: Float )` Add an elliptical arc by adding `PathNode.RelativeArcTo` to `nodes`.	Cmn
`PathBuilder`	`close()` Closes the current contour by adding a `PathNode.Close` to `nodes`.	Cmn
`PathBuilder`	`curveTo(x1: Float, y1: Float, x2: Float, y2: Float, x3: Float, y3: Float)` Add a cubic Bézier from the last point to the position (`x3`, `y3`), approaching the control points (`x1`, `y1`) and (`x2`, `y2`), by adding a `PathNode.CurveTo` to `nodes`.	Cmn
`PathBuilder`	`curveToRelative( dx1: Float, dy1: Float, dx2: Float, dy2: Float, dx3: Float, dy3: Float )` Add a cubic Bézier by adding a `PathNode.CurveTo` to `nodes`.	Cmn
`PathBuilder`	`horizontalLineTo(x: Float)` Add a line from the last point to the position (`x`, `oy`), where `oy` is the y coordinate of the last point, by adding a `PathNode.HorizontalTo` to `nodes`.	Cmn
`PathBuilder`	`horizontalLineToRelative(dx: Float)` Add a line from the last point to the position (`dx` `+ ox`, `oy`), where `ox` and `oy` are the x and y coordinates of the last point, by adding a `PathNode.RelativeHorizontalTo` to `nodes`.	Cmn
`PathBuilder`	`lineTo(x: Float, y: Float)` Add a line from the last point to the position (`x`, `y`) by adding a `PathNode.LineTo` to `nodes`.	Cmn
`PathBuilder`	`lineToRelative(dx: Float, dy: Float)` Add a line from the last point to the offset (`dx`, `dy`) relative to the last point by adding a `PathNode.RelativeLineTo` to `nodes`.	Cmn
`PathBuilder`	`moveTo(x: Float, y: Float)` Start a new contour at position (`x`, `y`) by adding a `PathNode.MoveTo` to `nodes`.	Cmn
`PathBuilder`	`moveToRelative(dx: Float, dy: Float)` Start a new contour at the offset (`dx`, `dy`) relative to the last path position by adding a `PathNode.RelativeMoveTo` to `nodes`.	Cmn
`PathBuilder`	`quadTo(x1: Float, y1: Float, x2: Float, y2: Float)` Add a quadratic Bézier from the last point to the position (`x2`, `y2`), approaching the control point (`x1`, `y1`), by adding a `PathNode.QuadTo` to `nodes`.	Cmn
`PathBuilder`	`quadToRelative(dx1: Float, dy1: Float, dx2: Float, dy2: Float)` Add a quadratic Bézier by adding a `PathNode.RelativeQuadTo` to `nodes`.	Cmn
`PathBuilder`	`reflectiveCurveTo(x1: Float, y1: Float, x2: Float, y2: Float)` Add a cubic Bézier from the last point to the position (`x2`, `y2`).	Cmn
`PathBuilder`	`reflectiveCurveToRelative(dx1: Float, dy1: Float, dx2: Float, dy2: Float)` Add a cubic Bézier by adding a `PathNode.RelativeReflectiveCurveTo` to `nodes`.	Cmn
`PathBuilder`	`reflectiveQuadTo(x1: Float, y1: Float)` Add a quadratic Bézier from the last point to the position (`x1`, `y1`).	Cmn
`PathBuilder`	`reflectiveQuadToRelative(dx1: Float, dy1: Float)` Add a quadratic Bézier by adding a `PathNode.RelativeReflectiveQuadTo` to `nodes`.	Cmn
`PathBuilder`	`verticalLineTo(y: Float)` Add a line from the last point to the position (`ox`, `y`), where `ox` is the x coordinate of the last point, by adding a `PathNode.VerticalTo` to `nodes`.	Cmn
`PathBuilder`	`verticalLineToRelative(dy: Float)` Add a line from the last point to the position (`ox`, `dy` `+ oy`), where `ox` and `oy` are the x and y coordinates of the last point, by adding a `PathNode.RelativeVerticalTo` to `nodes`.	Cmn

Public properties
`List<PathNode>`	`nodes` Returns the list of `PathNode` currently held in this builder.	Cmn

Public constructors

PathBuilder

Cmn

Added in 1.0.0

PathBuilder()

Public functions

arcTo

Cmn

Added in 1.0.0

fun arcTo(
    horizontalEllipseRadius: Float,
    verticalEllipseRadius: Float,
    theta: Float,
    isMoreThanHalf: Boolean,
    isPositiveArc: Boolean,
    x1: Float,
    y1: Float
): PathBuilder

Add an elliptical arc from the last point to the position (x1, y1) by adding PathNode.ArcTo to nodes. If no contour has been created by calling moveTo first, the origin of the arc is set to (0, 0).

The ellipse is defined by 3 parameters:

horizontalEllipseRadius and verticalEllipseRadius to define the size of the ellipse
theta to define the orientation (as an X-axis rotation) of the ellipse

In most situations, there are four arc candidates that can be drawn from the origin to (x1, y1). Which of the arcs is used is influenced by isMoreThanHalf and isPositiveArc.

When isMoreThanHalf is set to true, the added arc will be chosen amongst the two candidates that represent an arc sweep greater than or equal to 180 degrees.

When isPositiveArc is set to true, the added arc will be chosen amongst the two candidates with a positive-angle direction (counter-clockwise)

Parameters
`horizontalEllipseRadius: Float`	The horizontal radius of the ellipse
`verticalEllipseRadius: Float`	The vertical radius of the ellipse
`theta: Float`	The rotation of the ellipse around the X-axis, in degrees
`isMoreThanHalf: Boolean`	Defines whether to use an arc candidate with a sweep greater than or equal to 180 degrees
`isPositiveArc: Boolean`	Defines whether to use an arc candidate that's counter-clockwise or not
`x1: Float`	The x coordinate of the end point of the arc
`y1: Float`	The y coordinate of the end point of the arc

arcToRelative

Cmn

Added in 1.0.0

fun arcToRelative(
    a: Float,
    b: Float,
    theta: Float,
    isMoreThanHalf: Boolean,
    isPositiveArc: Boolean,
    dx1: Float,
    dy1: Float
): PathBuilder

Add an elliptical arc by adding PathNode.RelativeArcTo to nodes. If no contour has been created by calling moveTo first, the origin of the arc is set to (0, 0). The arc Bézier end point is defined by an offset relative to the last point.

The ellipse is defined by 3 parameters:

a and b to define the size of the ellipse
theta to define the orientation (as an X-axis rotation) of the ellipse

In most situations, there are four arc candidates that can be drawn from the origin to the end point. Which of the arcs is used is influenced by isMoreThanHalf and isPositiveArc.

When isMoreThanHalf is set to true, the added arc will be chosen amongst the two candidates that represent an arc sweep greater than or equal to 180 degrees.

When isPositiveArc is set to true, the added arc will be chosen amongst the two candidates with a positive-angle direction (counter-clockwise)

Parameters
`a: Float`	The horizontal radius of the ellipse
`b: Float`	The vertical radius of the ellipse
`theta: Float`	The rotation of the ellipse around the X-axis, in degrees
`isMoreThanHalf: Boolean`	Defines whether to use an arc candidate with a sweep greater than or equal to 180 degrees
`isPositiveArc: Boolean`	Defines whether to use an arc candidate that's counter-clockwise or not
`dx1: Float`	The x offset of the end point of the arc, relative to the last path position
`dy1: Float`	The y offset of the end point of the arc, relative to the last path position

close

Cmn

Added in 1.0.0

fun close(): PathBuilder

Closes the current contour by adding a PathNode.Close to nodes.

curveTo

Cmn

Added in 1.0.0

fun curveTo(x1: Float, y1: Float, x2: Float, y2: Float, x3: Float, y3: Float): PathBuilder

Add a cubic Bézier from the last point to the position (x3, y3), approaching the control points (x1, y1) and (x2, y2), by adding a PathNode.CurveTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0).

Parameters
`x1: Float`	The x coordinate of the first control point of the cubic curve
`y1: Float`	The y coordinate of the first control point of the cubic curve
`x2: Float`	The x coordinate of the second control point of the cubic curve
`y2: Float`	The y coordinate of the second control point of the cubic curve
`x3: Float`	The x coordinate of the end point of the cubic curve
`y3: Float`	The y coordinate of the end point of the cubic curve

curveToRelative

Cmn

Added in 1.0.0

fun curveToRelative(
    dx1: Float,
    dy1: Float,
    dx2: Float,
    dy2: Float,
    dx3: Float,
    dy3: Float
): PathBuilder

Add a cubic Bézier by adding a PathNode.CurveTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0). The cubic Bézier control and end points are defined by offsets relative to the last point.

Parameters
`dx1: Float`	The x offset of the first control point of the cubic curve, relative to the last path position
`dy1: Float`	The y offset of the first control point of the cubic curve, relative to the last path position
`dx2: Float`	The x offset of the second control point of the cubic curve, relative to the last path position
`dy2: Float`	The y offset of the second control point of the cubic curve, relative to the last path position
`dx3: Float`	The x offset of the end point of the cubic curve, relative to the last path position
`dy3: Float`	The y offset of the end point of the cubic curve, relative to the last path position

horizontalLineTo

Cmn

Added in 1.0.0

fun horizontalLineTo(x: Float): PathBuilder

Add a line from the last point to the position (x, oy), where oy is the y coordinate of the last point, by adding a PathNode.HorizontalTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`x: Float`	The x coordinate of the end of the line

horizontalLineToRelative

Cmn

Added in 1.0.0

fun horizontalLineToRelative(dx: Float): PathBuilder

Add a line from the last point to the position (dx + ox, oy), where ox and oy are the x and y coordinates of the last point, by adding a PathNode.RelativeHorizontalTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`dx: Float`	The x offset of the end of the line, relative to the last path position

lineTo

Cmn

Added in 1.0.0

fun lineTo(x: Float, y: Float): PathBuilder

Add a line from the last point to the position (x, y) by adding a PathNode.LineTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`x: Float`	The x coordinate of the end of the line
`y: Float`	The y coordinate of the end of the line

lineToRelative

Cmn

Added in 1.0.0

fun lineToRelative(dx: Float, dy: Float): PathBuilder

Add a line from the last point to the offset (dx, dy) relative to the last point by adding a PathNode.RelativeLineTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`dx: Float`	The x offset of the end of the line, relative to the last path position
`dy: Float`	The y offset of the end of the line, relative to the last path position

moveTo

Cmn

Added in 1.0.0

fun moveTo(x: Float, y: Float): PathBuilder

Start a new contour at position (x, y) by adding a PathNode.MoveTo to nodes.

Parameters
`x: Float`	The x coordinate of the start of the new contour
`y: Float`	The y coordinate of the start of the new contour

moveToRelative

Cmn

Added in 1.0.0

fun moveToRelative(dx: Float, dy: Float): PathBuilder

Start a new contour at the offset (dx, dy) relative to the last path position by adding a PathNode.RelativeMoveTo to nodes.

Parameters
`dx: Float`	The x offset of the start of the new contour, relative to the last path position
`dy: Float`	The y offset of the start of the new contour, relative to the last path position

quadTo

Cmn

Added in 1.0.0

fun quadTo(x1: Float, y1: Float, x2: Float, y2: Float): PathBuilder

Add a quadratic Bézier from the last point to the position (x2, y2), approaching the control point (x1, y1), by adding a PathNode.QuadTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0).

Parameters
`x1: Float`	The x coordinate of the control point of the quadratic curve
`y1: Float`	The y coordinate of the control point of the quadratic curve
`x2: Float`	The x coordinate of the end point of the quadratic curve
`y2: Float`	The y coordinate of the end point of the quadratic curve

quadToRelative

Cmn

Added in 1.0.0

fun quadToRelative(dx1: Float, dy1: Float, dx2: Float, dy2: Float): PathBuilder

Add a quadratic Bézier by adding a PathNode.RelativeQuadTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0). The control point and end point of the curve are defined by offsets relative to the last point.

Parameters
`dx1: Float`	The x offset of the control point of the quadratic curve, relative to the last path position
`dy1: Float`	The y offset of the control point of the quadratic curve, relative to the last path position
`dx2: Float`	The x offset of the end point of the quadratic curve, relative to the last path position
`dy2: Float`	The y offset of the end point of the quadratic curve, relative to the last path position

reflectiveCurveTo

Cmn

Added in 1.0.0

fun reflectiveCurveTo(x1: Float, y1: Float, x2: Float, y2: Float): PathBuilder

Add a cubic Bézier from the last point to the position (x2, y2). The first control point is the reflection of the second control point of the previous command. If there is no previous command or the previous command is not a cubic Bézier, the first control point is set to the last path position. The second control point is defined by (x1, y1). Calling this method adds a PathNode.ReflectiveCurveTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0).

Parameters
`x1: Float`	The x coordinate of the second control point of the cubic curve
`y1: Float`	The y coordinate of the second control point of the cubic curve
`x2: Float`	The x coordinate of the end point of the cubic curve
`y2: Float`	The y coordinate of the end point of the cubic curve

reflectiveCurveToRelative

Cmn

Added in 1.0.0

fun reflectiveCurveToRelative(dx1: Float, dy1: Float, dx2: Float, dy2: Float): PathBuilder

Add a cubic Bézier by adding a PathNode.RelativeReflectiveCurveTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0). The cubic Bézier second control point and end points are defined by offsets relative to the last point. The reflective nature of the curve is described in reflectiveCurveTo.

Parameters
`dx1: Float`	The x offset of the second control point of the cubic curve, relative to the last path position
`dy1: Float`	The y offset of the second control point of the cubic curve, relative to the last path position
`dx2: Float`	The x offset of the end point of the cubic curve, relative to the last path position
`dy2: Float`	The y offset of the end point of the cubic curve, relative to the last path position

reflectiveQuadTo

Cmn

Added in 1.0.0

fun reflectiveQuadTo(x1: Float, y1: Float): PathBuilder

Add a quadratic Bézier from the last point to the position (x1, y1). The control point is the reflection of the control point of the previous command. If there is no previous command or the previous command is not a quadratic Bézier, the control point is set to the last path position. Calling this method adds a PathNode.ReflectiveQuadTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0).

Parameters
`x1: Float`	The x coordinate of the end point of the quadratic curve
`y1: Float`	The y coordinate of the end point of the quadratic curve

reflectiveQuadToRelative

Cmn

Added in 1.0.0

fun reflectiveQuadToRelative(dx1: Float, dy1: Float): PathBuilder

Add a quadratic Bézier by adding a PathNode.RelativeReflectiveQuadTo to nodes. If no contour has been created by calling moveTo first, the origin of the curve is set to (0, 0). The quadratic Bézier end point is defined by an offset relative to the last point. The reflective nature of the curve is described in reflectiveQuadTo.

Parameters
`dx1: Float`	The x offset of the end point of the quadratic curve, relative to the last path position
`dy1: Float`	The y offset of the end point of the quadratic curve, relative to the last path position

verticalLineTo

Cmn

Added in 1.0.0

fun verticalLineTo(y: Float): PathBuilder

Add a line from the last point to the position (ox, y), where ox is the x coordinate of the last point, by adding a PathNode.VerticalTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`y: Float`	The y coordinate of the end of the line

verticalLineToRelative

Cmn

Added in 1.0.0

fun verticalLineToRelative(dy: Float): PathBuilder

Add a line from the last point to the position (ox, dy + oy), where ox and oy are the x and y coordinates of the last point, by adding a PathNode.RelativeVerticalTo to nodes. If no contour has been created by calling moveTo first, the origin of the line is set to (0, 0).

Parameters
`dy: Float`	The y offset of the end of the line, relative to the last path position

Public properties

nodes

Cmn

Added in 1.0.0

val nodes: List<PathNode>

Returns the list of PathNode currently held in this builder.