draw

package module

v0.0.0-...-fa5f906 Latest Latest Go to latest Published: Apr 12, 2024 License: MIT Imports: 2 Imported by: 0

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Repository

github.com/Andrew-M-C/go.util

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Documentation ¶

Overview ¶

Package draw 提供简单的绘图工具

Index ¶

Constants
func DrawHollowCircleXY[TC, TR, TW Number](canvas Canvas, centerX, centerY TC, radius TR, width TW)
func DrawHollowRectXY[TP, TW Number](canvas Canvas, x1, y1, x2, y2 TP, width TW)
func DrawLineXY[TP, TW Number](canvas Canvas, x1, y1, x2, y2 TP, width TW)
func DrawPointXY[TP, TR Number](canvas Canvas, centerX, centerY TP, radius TR)
func DrawSolidRectXY[T Number](canvas Canvas, x1, y1, x2, y2 T)
func DrawTextXY[T Number](canvas TextCanvas, x, y T, text string, opts ...Option)
type BlackColor
- func (bc BlackColor) RGBA() (r, g, b, a uint32)
type BlueColor
- func (bl BlueColor) RGBA() (r, g, b, a uint32)
type Canvas
type GreenColor
- func (gr GreenColor) RGBA() (r, g, b, a uint32)
type MergedOptions
- func MergeOptions(c Canvas, opts []Option) MergedOptions
type Number
type Option
- func OptColor(clr color.Color) Option
- func OptFontSize[T Number](size T) Option
- func OptRotate[T Number](angle T) Option
type Point
- func NewPoint[T1, T2 Number](x T1, y T2) Point
- func P[T1, T2 Number](x T1, y T2) Point
type RedColor
- func (re RedColor) RGBA() (r, g, b, a uint32)
type TextCanvas
type WhiteColor
- func (wc WhiteColor) RGBA() (r, g, b, a uint32)

Constants ¶

View Source

const (
	White = WhiteColor(0xFF)
	Black = BlackColor(0xFF)
	Red   = RedColor(0xFF)
	Green = GreenColor(0xFF)
	Blue  = BlueColor(0xFF)
)

Red 表示简单红色

Variables ¶

This section is empty.

Functions ¶

func DrawHollowCircleXY ¶

func DrawHollowCircleXY[TC, TR, TW Number](canvas Canvas, centerX, centerY TC, radius TR, width TW)

DrawHollowCircle 封装 DrawHollowCircle, 但是提供具体的 XY 值而不是 Point

func DrawHollowRectXY ¶

func DrawHollowRectXY[TP, TW Number](canvas Canvas, x1, y1, x2, y2 TP, width TW)

DrawHollowRectXY 封装 DrawHollowRect, 但是提供具体的 XY 值而不是 Point

func DrawLineXY ¶

func DrawLineXY[TP, TW Number](canvas Canvas, x1, y1, x2, y2 TP, width TW)

DrawLineXY 封装 DrawLine, 但是提供具体的 XY 值而不是 Point

func DrawPointXY ¶

func DrawPointXY[TP, TR Number](canvas Canvas, centerX, centerY TP, radius TR)

DrawPointXY 封装 DrawPoint, 但是提供具体的 XY 值而不是 Point

func DrawSolidRectXY ¶

func DrawSolidRectXY[T Number](canvas Canvas, x1, y1, x2, y2 T)

DrawSolidRectXY 封装 DrawSolidRect, 但是提供具体的 XY 值而不是 Point

func DrawTextXY ¶

func DrawTextXY[T Number](canvas TextCanvas, x, y T, text string, opts ...Option)

DrawTextXY 封装 DrawText, 但是提供具体的 XY 值而不是 Point

Types ¶

type BlackColor ¶

type BlackColor uint8

func (BlackColor) RGBA ¶

func (bc BlackColor) RGBA() (r, g, b, a uint32)

RGBA 实现 color.Color 接口

type BlueColor ¶

type BlueColor uint8

func (BlueColor) RGBA ¶

func (bl BlueColor) RGBA() (r, g, b, a uint32)

RGBA 实现 color.Color 接口

type Canvas ¶

type Canvas interface {
	Size() (width, height float64)

	SetDrawColor(clr color.Color)
	CurrentDrawColor() color.Color

	DrawPoint(center Point, radius float64)
	DrawHollowCircle(center Point, radius, width float64)

	DrawLine(from, to Point, width float64)

	DrawHollowRect(endpoint1, endpoint2 Point, width float64)
	DrawSolidRect(endpoint1, endpoint2 Point)

	DrawHollowPolygon(width float64, endpoints ...Point)
	DrawSolidPolygon(endpoints ...Point)

	Save(filepath string) error
}

Canvas 表示一个画板

type GreenColor ¶

type GreenColor uint8

func (GreenColor) RGBA ¶

func (gr GreenColor) RGBA() (r, g, b, a uint32)

RGBA 实现 color.Color 接口

type MergedOptions ¶

type MergedOptions interface {
	Color() color.Color
	FontSize() int
	Rotate() float64
}

MergedOptions 表示合并后的参数。调用方无需使用，这是给实现用的

func MergeOptions ¶

func MergeOptions(c Canvas, opts []Option) MergedOptions

MergeOptions 给实现方使用, 实现各种 option

type Number ¶

type Number interface {
	constraints.Integer | constraints.Float
}

Number 表示任意数字类型

type Option ¶

type Option func(o *optImpl)

Option 表示额外参数

func OptColor ¶

func OptColor(clr color.Color) Option

OptColor 指定此次绘制颜色

func OptFontSize ¶

func OptFontSize[T Number](size T) Option

OptFontSize 指定字号

func OptRotate ¶

func OptRotate[T Number](angle T) Option

OptRotate 指定旋转角度

type Point ¶

type Point struct {
	X float64
	Y float64
}

Point 表示一个点

func NewPoint ¶

func NewPoint[T1, T2 Number](x T1, y T2) Point

NewPoint 构建一个新的点

func P ¶

func P[T1, T2 Number](x T1, y T2) Point

P 等价于 NewPoint, 缩短调用方调用长度

type RedColor ¶

type RedColor uint8

func (RedColor) RGBA ¶

func (re RedColor) RGBA() (r, g, b, a uint32)

RGBA 实现 color.Color 接口

type TextCanvas ¶

type TextCanvas interface {
	DrawText(origin Point, text string, opts ...Option)
}

TextCanvas 表示一个能绘图的画布

type WhiteColor ¶

type WhiteColor uint8

func (WhiteColor) RGBA ¶

func (wc WhiteColor) RGBA() (r, g, b, a uint32)

RGBA 实现 color.Color 接口

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
svg Package svg 提供基于 svg 的绘图工具	Package svg 提供基于 svg 的绘图工具

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