ssvg

Documentation

Overview

Package ssvg is for generate simple SVG, support muti-frame animation.

Index

• func DefaultColors(index int) string
• type Circle
  • func (this *Circle) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Circle) Write(w io.Writer, svg *Svg)
• type Element
• type Ellipse
  • func (this *Ellipse) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Ellipse) Write(w io.Writer, svg *Svg)
• type Frame
  • func (this *Frame) Add(e Element)
  • func (this *Frame) Range1(xmin, xmax, ymin, ymax *float64)
  • func (this *Frame) Range2(xmin, xmax, ymin, ymax *float64)
• type HLine
  • func (this *HLine) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *HLine) Write(w io.Writer, svg *Svg)
• type Icon
  • func (this *Icon) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Icon) Write(w io.Writer, svg *Svg)
• type Line
  • func (this *Line) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Line) Write(w io.Writer, svg *Svg)
• type Point
• type Polygon
  • func (this *Polygon) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Polygon) Write(w io.Writer, svg *Svg)
• type Polyline
  • func (this *Polyline) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Polyline) Write(w io.Writer, svg *Svg)
• type Rect
  • func (this *Rect) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Rect) Write(w io.Writer, svg *Svg)
• type Style
  • func (style *Style) Write(w io.Writer, svg *Svg)
• type Svg
  • func (this *Svg) Add(e Element)
  • func (this *Svg) CurrentFrame() *Frame
  • func (this *Svg) NextFrame() *Frame
  • func (this *Svg) Write(w io.Writer, canvasPixelSize float64)
  • func (this *Svg) WriteFile(filename string, canvasPixelSize float64) error
• type Text
  • func (this *Text) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *Text) Write(w io.Writer, svg *Svg)
• type VLine
  • func (this *VLine) Range(xmin, xmax, ymin, ymax *float64)
  • func (this *VLine) Write(w io.Writer, svg *Svg)

Functions

func DefaultColors

func DefaultColors(index int) string

DefaultColors is easy way to choose color for serial of items. index can be any nonnegative integer.

Types

type Circle

type Circle struct {
	Cx, Cy, R float64
	Style
}

func (*Circle) Range

func (this *Circle) Range(xmin, xmax, ymin, ymax *float64)

func (*Circle) Write

func (this *Circle) Write(w io.Writer, svg *Svg)

type Element

type Element interface {
	Write(w io.Writer, svg *Svg)
	Range(xmin, xmax, ymin, ymax *float64)
}

Element is abstract element.

type Ellipse

type Ellipse struct {
	Cx, Cy, Rx, Ry float64
	Style
}

func (*Ellipse) Range

func (this *Ellipse) Range(xmin, xmax, ymin, ymax *float64)

func (*Ellipse) Write

func (this *Ellipse) Write(w io.Writer, svg *Svg)

type Frame

type Frame struct {
	Elements    []Element
	Duration    int // 毫秒
	KeepVisible bool
}

func (*Frame) Add

func (this *Frame) Add(e Element)

func (*Frame) Range1

func (this *Frame) Range1(xmin, xmax, ymin, ymax *float64)

func (*Frame) Range2

func (this *Frame) Range2(xmin, xmax, ymin, ymax *float64)

type HLine

type HLine struct {
	Y float64
	Style
}

func (*HLine) Range

func (this *HLine) Range(xmin, xmax, ymin, ymax *float64)

func (*HLine) Write

func (this *HLine) Write(w io.Writer, svg *Svg)

type Icon

type Icon struct {
	X, Y  float64
	Shape string  // "box", "circle"
	Zoom  float64 // 0 ~ 1.0
	Style
}

简易图标, 大小是固定的

func (*Icon) Range

func (this *Icon) Range(xmin, xmax, ymin, ymax *float64)

func (*Icon) Write

func (this *Icon) Write(w io.Writer, svg *Svg)

type Line

type Line struct {
	X1, Y1, X2, Y2 float64
	AuxLeft        bool // 左侧辅助线
	AuxRight       bool // 右侧辅助线
	Arrow          bool // 箭头
	Style
}

func (*Line) Range

func (this *Line) Range(xmin, xmax, ymin, ymax *float64)

func (*Line) Write

func (this *Line) Write(w io.Writer, svg *Svg)

type Point

type Point struct {
	X, Y float64
}

折线等元素中的点, 如需"点状图元"请用Icon

type Polygon

type Polygon struct {
	Points []Point
	Style
}

func (*Polygon) Range

func (this *Polygon) Range(xmin, xmax, ymin, ymax *float64)

func (*Polygon) Write

func (this *Polygon) Write(w io.Writer, svg *Svg)

type Polyline

type Polyline struct {
	Points []Point
	Style
}

func (*Polyline) Range

func (this *Polyline) Range(xmin, xmax, ymin, ymax *float64)

func (*Polyline) Write

func (this *Polyline) Write(w io.Writer, svg *Svg)

type Rect

type Rect struct {
	X, Y, W, H float64
	Style
}

func (*Rect) Range

func (this *Rect) Range(xmin, xmax, ymin, ymax *float64)

func (*Rect) Write

func (this *Rect) Write(w io.Writer, svg *Svg)

type Style

type Style struct {
	// Fill color
	FillColor string

	// Stroke color
	StrokeColor string

	// Stroke width in millimetres, 0 is treat as 1
	StrokeWidth float64

	// Transparent level between 0~1, opposite to opacity.
	Transparency float64
}

Style keep styles for element.

func (*Style) Write

func (style *Style) Write(w io.Writer, svg *Svg)

Write style attributes to w, for svg.

type Svg

type Svg struct {
	CanvasSize int // pixels

	Frames []*Frame

	YDown bool

	FrameDuration int // default frame duration
	// contains filtered or unexported fields
}

func (*Svg) Add

func (this *Svg) Add(e Element)

func (*Svg) CurrentFrame

func (this *Svg) CurrentFrame() *Frame

func (this *Svg) KeepLastFrameVisible() {
	this.CurrentFrame().KeepVisible = true
}

func (*Svg) NextFrame

func (this *Svg) NextFrame() *Frame

func (*Svg) Write

func (this *Svg) Write(w io.Writer, canvasPixelSize float64)

func (*Svg) WriteFile

func (this *Svg) WriteFile(filename string, canvasPixelSize float64) error

, file);

type Text

type Text struct {
	X, Y float64
	Text string
	Zoom float64
	Style
}

func (*Text) Range

func (this *Text) Range(xmin, xmax, ymin, ymax *float64)

func (*Text) Write

func (this *Text) Write(w io.Writer, svg *Svg)

type VLine

type VLine struct {
	X float64
	Style
}

func (*VLine) Range

func (this *VLine) Range(xmin, xmax, ymin, ymax *float64)

func (*VLine) Write

func (this *VLine) Write(w io.Writer, svg *Svg)