class GraphicsStroke

package openfl.display

implements IGraphicsStroke, IGraphicsData

Available on all platforms

Defines a line style or stroke.

Use a GraphicsStroke object with the Graphics.drawGraphicsData() method. Drawing a GraphicsStroke object is the equivalent of calling one of the methods of the Graphics class that sets the line style, such as the Graphics.lineStyle() method, the Graphics.lineBitmapStyle() method, or the Graphics.lineGradientStyle() method.

Constructor

new (thickness:Float = Math.NaN, pixelHinting:Bool = false, ?scaleMode:LineScaleMode, ?caps:CapsStyle, ?joints:JointStyle, miterLimit:Float = 3, ?fill:IGraphicsFill)

Creates a new GraphicsStroke object.

Parameters:

pixelHinting

A Boolean value that specifies whether to hint strokes to full pixels. This affects both the position of anchors of a curve and the line stroke size itself. With pixelHinting set to true, Flash Player hints line widths to full pixel widths. With pixelHinting set to false, disjoints can appear for curves and straight lines. For example, the following illustrations show how Flash Player renders two rounded rectangles that are identical, except that the pixelHinting parameter used in the lineStyle() method is set differently

               (the images are scaled by 200%, to emphasize the

difference):

If a value is not supplied, the line does not use pixel hinting.

scaleMode

A value from the LineScaleMode class that specifies which scale mode to use:

  • LineScaleMode.NORMAL - Always scale the line thickness when the object is scaled

               (the default).
  • LineScaleMode.NONE - Never scale the line thickness.

  • LineScaleMode.VERTICAL - Do not scale the line thickness if the object is scaled vertically only. For example, consider the following circles, drawn with a one-pixel line, and each with the scaleMode parameter set to LineScaleMode.VERTICAL. The circle on the left is scaled vertically only, and the circle on the right is scaled both vertically and horizontally:

  • LineScaleMode.HORIZONTAL - Do not scale the line thickness if the object is scaled horizontally only. For example, consider the following circles, drawn with a one-pixel line, and each with the scaleMode parameter set to LineScaleMode.HORIZONTAL. The circle on the left is scaled horizontally only, and the circle on the right is scaled both vertically and horizontally:

caps

A value from the CapsStyle class that specifies the type of caps at the end of lines. Valid values are: CapsStyle.NONE, CapsStyle.ROUND, and CapsStyle.SQUARE. If a value is not indicated, Flash uses round caps.

For example, the following illustrations show the different capsStyle settings. For each setting, the illustration shows a blue line with a thickness of 30(for which the capsStyle applies), and a superimposed black line with a thickness of 1(for which no capsStyle applies):

joints

A value from the JointStyle class that specifies the type of joint appearance used at angles. Valid values are: JointStyle.BEVEL, JointStyle.MITER, and JointStyle.ROUND. If a value is not indicated, Flash uses round joints.

For example, the following illustrations show the different joints settings. For each setting, the illustration shows an angled blue line with a thickness of 30(for which the jointStyle applies), and a superimposed angled black line with a thickness of 1(for which no jointStyle applies):

Note: For joints set to JointStyle.MITER, you can use the miterLimit parameter to limit the length of the miter.

Variables

caps:CapsStyle

Specifies the type of caps at the end of lines. Valid values are: CapsStyle.NONE, CapsStyle.ROUND, and CapsStyle.SQUARE. If a value is not indicated, Flash uses round caps.

For example, the following illustrations show the different capsStyle settings. For each setting, the illustration shows a blue line with a thickness of 30(for which the capsStyle applies), and a superimposed black line with a thickness of 1(for which no capsStyle applies):

fill:IGraphicsFill

Specifies the instance containing data for filling a stroke. An IGraphicsFill instance can represent a series of fill commands.

joints:JointStyle

Specifies the type of joint appearance used at angles. Valid values are: JointStyle.BEVEL, JointStyle.MITER, and JointStyle.ROUND. If a value is not indicated, Flash uses round joints.

For example, the following illustrations show the different joints settings. For each setting, the illustration shows an angled blue line with a thickness of 30(for which the jointStyle applies), and a superimposed angled black line with a thickness of 1(for which no jointStyle applies):

Note: For joints set to JointStyle.MITER, you can use the miterLimit parameter to limit the length of the miter.

miterLimit:Float

Indicates the limit at which a miter is cut off. Valid values range from 1 to 255(and values outside that range are rounded to 1 or 255). This value is only used if the jointStyle is set to "miter". The miterLimit value represents the length that a miter can extend beyond the point at which the lines meet to form a joint. The value expresses a factor of the line thickness. For example, with a miterLimit factor of 2.5 and a thickness of 10 pixels, the miter is cut off at 25 pixels.

For example, consider the following angled lines, each drawn with a thickness of 20, but with miterLimit set to 1, 2, and 4. Superimposed are black reference lines showing the meeting points of the joints:

Notice that a given miterLimit value has a specific maximum angle for which the miter is cut off. The following table lists some examples:

pixelHinting:Bool

Specifies whether to hint strokes to full pixels. This affects both the position of anchors of a curve and the line stroke size itself. With pixelHinting set to true, Flash Player hints line widths to full pixel widths. With pixelHinting set to false, disjoints can appear for curves and straight lines. For example, the following illustrations show how Flash Player renders two rounded rectangles that are identical, except that the pixelHinting parameter used in the lineStyle() method is set differently(the images are scaled by 200%, to emphasize the difference):

scaleMode:LineScaleMode

Specifies the stroke thickness scaling. Valid values are:

  • LineScaleMode.NORMAL - Always scale the line thickness when the object is scaled(the default).

  • LineScaleMode.NONE - Never scale the line thickness.

  • LineScaleMode.VERTICAL - Do not scale the line thickness if the object is scaled vertically only. For example, consider the following circles, drawn with a one-pixel line, and each with the scaleMode parameter set to LineScaleMode.VERTICAL. The circle on the left is scaled vertically only, and the circle on the right is scaled both vertically and horizontally:

  • LineScaleMode.HORIZONTAL - Do not scale the line thickness if the object is scaled horizontally only. For example, consider the following circles, drawn with a one-pixel line, and each with the scaleMode parameter set to LineScaleMode.HORIZONTAL. The circle on the left is scaled horizontally only, and the circle on the right is scaled both vertically and horizontally:

thickness:Float

Indicates the thickness of the line in points; valid values are 0-255. If a number is not specified, or if the parameter is undefined, a line is not drawn. If a value of less than 0 is passed, the default is 0. The value 0 indicates hairline thickness; the maximum thickness is 255. If a value greater than 255 is passed, the default is 255.