# Path2D > ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE** > This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version. **Path2D** allows you to describe a path through an existing path. This path can be drawn through the **stroke** API of **Canvas**. ## addPath addPath(path: Object): void Adds a path to this path. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | path | Object | Yes | null | Path to be added to this path. | - Example ``` @Entry @Component struct AddPath { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Da: Path2D = new Path2D("M250 150 L150 350 L350 350 Z") private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.addPath(this.path2Da) this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001211898520](figures/en-us_image_0000001211898520.png) ## closePath closePath(): void Moves the current point of the path back to the start point of the path, and draws a straight line between the current point and the start point. If the shape has already been closed or has only one point, this method does nothing. - Example ``` @Entry @Component struct ClosePath { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.moveTo(200, 100) this.path2Db.lineTo(300, 100) this.path2Db.lineTo(200, 200) this.path2Db.closePath() this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001212218482](figures/en-us_image_0000001212218482.png) ## moveTo moveTo(x: number, y: number): void Moves the current coordinate point of the path to the target point, without drawing a line during the movement. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x | number | Yes | 0 | X-coordinate of the target point. | | y | number | Yes | 0 | Y-coordinate of the target point. | - Example ``` @Entry @Component struct MoveTo { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.moveTo(50, 100) this.path2Db.lineTo(250, 100) this.path2Db.lineTo(150, 200) this.path2Db.closePath() this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001257138389](figures/en-us_image_0000001257138389.png) ## lineTo lineTo(x: number, y: number): void Draws a straight line from the current point to the target point. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x | number | Yes | 0 | X-coordinate of the target point. | | y | number | Yes | 0 | Y-coordinate of the target point. | - Example ``` @Entry @Component struct LineTo { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.moveTo(100, 100) this.path2Db.lineTo(100, 200) this.path2Db.lineTo(200, 200) this.path2Db.lineTo(200, 100) this.path2Db.closePath() this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001256858435](figures/en-us_image_0000001256858435.png) ## bezierCurveTo bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number): void Draws a cubic bezier curve on the canvas. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | cp1x | number | Yes | 0 | X-coordinate of the first parameter of the bezier curve. | | cp1y | number | Yes | 0 | Y-coordinate of the first parameter of the bezier curve. | | cp2x | number | Yes | 0 | X-coordinate of the second parameter of the bezier curve. | | cp2y | number | Yes | 0 | Y-coordinate of the second parameter of the bezier curve. | | x | number | Yes | 0 | X-coordinate of the end point on the bezier curve. | | y | number | Yes | 0 | Y-coordinate of the end point on the bezier curve. | - Example ``` @Entry @Component struct BezierCurveTo { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.moveTo(10, 10) this.path2Db.bezierCurveTo(20, 100, 200, 100, 200, 20);this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001257058445](figures/en-us_image_0000001257058445.png) ## quadraticCurveTo quadraticCurveTo(cpx: number, cpy: number, x: number ,y: number): void Draws a quadratic curve on the canvas. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | cpx | number | Yes | 0 | X-coordinate of the bezier curve parameter. | | cpy | number | Yes | 0 | Y-coordinate of the bezier curve parameter. | | x | number | Yes | 0 | X-coordinate of the end point on the bezier curve. | | y | number | Yes | 0 | Y-coordinate of the end point on the bezier curve. | - Example ``` @Entry @Component struct QuadraticCurveTo { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.moveTo(10, 10) this.path2Db.quadraticCurveTo(100, 100, 200, 20) this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001212058512](figures/en-us_image_0000001212058512.png) ## arc arc(x: number, y: number, radius: number, startAngle: number, endAngle: number, anticlockwise?: number): void Draws an arc on the canvas. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x | number | Yes | 0 | X-coordinate of the center point of the arc. | | y | number | Yes | 0 | Y-coordinate of the center point of the arc. | | radius | number | Yes | 0 | Radius of the arc. | | startAngle | number | Yes | 0 | Start radian of the arc. | | endAngle | number | Yes | 0 | End radian of the arc. | | anticlockwise | boolean | No | false | Whether to draw the arc counterclockwise. | - Example ``` @Entry @Component struct Arc { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.arc(100, 75, 50, 0, 6.28);this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001212378446](figures/en-us_image_0000001212378446.png) ## arcTo arcTo(x1: number, y1: number, x2: number, y2: number, radius: number): void Draws an arc based on the radius and points on the arc. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x1 | number | Yes | 0 | X-coordinate of the first point on the arc. | | y1 | number | Yes | 0 | Y-coordinate of the first point on the arc. | | x2 | number | Yes | 0 | X-coordinate of the second point on the arc. | | y2 | number | Yes | 0 | Y-coordinate of the second point on the arc. | | radius | number | Yes | 0 | Radius of the arc. | - Example ``` @Entry @Component struct ArcTo { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.arcTo(150, 20, 150, 70, 50) this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001212058510](figures/en-us_image_0000001212058510.png) ## ellipse ellipse(x: number, y: number, radiusX: number, radiusY: number, rotation: number, startAngle: number, endAngle: number, anticlockwise?: number): void Draws an ellipse in the specified rectangular region. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x | number | Yes | 0 | X-coordinate of the ellipse center. | | y | number | Yes | 0 | Y-coordinate of the ellipse center. | | radiusX | number | Yes | 0 | Ellipse radius on the x-axis. | | radiusY | number | Yes | 0 | Ellipse radius on the y-axis. | | rotation | number | Yes | 0 | Rotation angle of the ellipse, in radians. | | startAngle | number | Yes | 0 | Angle of the start point for drawing the ellipse, in radians. | | endAngle | number | Yes | 0 | Angle of the end point for drawing the ellipse, in radians. | | anticlockwise | number | No | 0 | Whether to draw the ellipse in the counterclockwise direction. The value **0** means to draw the ellipse in the clockwise direction, and **1** means to draw the ellipse in the counterclockwise direction. This parameter is optional. The default value is **0**. | - Example ``` @Entry @Component struct CanvasExample { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.ellipse(200, 200, 50, 100, Math.PI * 0.25, Math.PI * 0.5, Math.PI) this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001257138391](figures/en-us_image_0000001257138391.png) ## rect rect(x: number, y: number, width: number, height: number): void Creates a rectangle. - Parameters | Name | Type | Mandatory | Default Value | Description | | -------- | -------- | -------- | -------- | -------- | | x | number | Yes | 0 | X-coordinate of the upper left corner of the rectangle. | | y | number | Yes | 0 | Y-coordinate of the upper left corner of the rectangle. | | width | number | Yes | 0 | Width of the rectangle. | | height | number | Yes | 0 | Height of the rectangle. | - Example ``` @Entry @Component struct CanvasExample { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) private path2Db: Path2D = new Path2D() build() { Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) { Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{ this.path2Db.rect(20, 20, 100, 100);this.context.stroke(this.path2Db) }) } .width('100%') .height('100%') } } ``` ![en-us_image_0000001256978385](figures/en-us_image_0000001256978385.png)