filters

type Arrow struct {
	// From, To 箭头的起始点:
	// 箭头在To的位置
	From, To image.Point

	// Color 定义箭头的颜色
	Color color.Color

	// Thickness 箭头的宽度 实际像素点为 Thickness*arrowHeadWidthFactor
	Thickness float64
	// contains filtered or unexported fields
}

type Circle struct {
	// Dim defines the rectangle that will encompass the
	// circle/ellipse.
	Dim image.Rectangle

	// Color of the circle to be drawn.
	Color color.Color

	// Thickness of the circle to be drawn.
	Thickness float64

	// Center is generated automatically.
	Center Vec2
	// contains filtered or unexported fields
}

type DottedLine struct {
	// From, To 虚线开始到结束的位置记录:
	From, To image.Point

	// Color 指定虚线的颜色.
	Color color.Color

	// Thickness 指定虚线的宽度
	Thickness float64
	// contains filtered or unexported fields
}

type Pen struct {

	// Color 指定虚线的颜色.
	Color color.Color

	// Thickness 指定虚线的宽度
	Thickness float64
	// contains filtered or unexported fields
}

type Rectangle struct {
	// 用来表示矩形框
	Rect image.Rectangle

	// Color of the Rectangle to be drawn.
	Color color.Color

	// Thickness 指定矩形边框的宽度
	Thickness float64
	// contains filtered or unexported fields
}

type ShieldBlock struct {
	// 用来表示矩形框
	Rect image.Rectangle

	// Color of the ShieldBlock to be drawn.
	Color color.Color
}

type StraightLine struct {
	// From, To 直线开始到结束的位置记录:
	From, To image.Point

	// Color 指定直线的颜色.
	Color color.Color

	// Thickness 指定直线的宽度
	Thickness float64
	// contains filtered or unexported fields
}

type Text struct {
	// Text to render.
	Text string

	// Center (horizontal and vertical) where to draw the text.
	Center image.Point

	// Color of the Text to be drawn.
	Color, Background color.Color

	// Font size.
	Size float64
	// contains filtered or unexported fields
}

type Vec2 [2]float64