utils

Documentation

Index

• Variables
• func CalcAbs(a int) (ret int)
• func DrawCircle(centerX, centerY, radius, thick int, c color.RGBA, rgba *image.RGBA)
• func DrawDataLineByData(data map[string]int, thick int, rgba *image.RGBA, ...)
• func DrawDataLineByPercentage(data map[string]int, thick int, rgba *image.RGBA, ...)
• func DrawLine(x0, y0, x1, y1, thick int, c color.RGBA, rgba *image.RGBA)
• func DrawString(x, y int, content string, rgba *image.RGBA, fontColor color.RGBA)
• func GCD(x, y int) int
• func GetRadiusRadians(img *image.RGBA, n int) (radius int, radians float64)
• func NewImagePath() (string, error)
• func Pow(x, n int) int
• func SetSize(size ...int) (img image.Rectangle)
• func ToInt(f float64) int

Variables

var Config config

Functions

func CalcAbs

func CalcAbs(a int) (ret int)

func DrawCircle

func DrawCircle(centerX, centerY, radius, thick int, c color.RGBA, rgba *image.RGBA)

func DrawDataLineByData

func DrawDataLineByData(data map[string]int, thick int, rgba *image.RGBA, lineColor, fontColor color.RGBA)

********* Start DrawDataLineByData ******** The first parameter is a map In this map, string is the subject's title on each vertex

func DrawDataLineByPercentage

func DrawDataLineByPercentage(data map[string]int, thick int, rgba *image.RGBA, lineColor, fontColor color.RGBA)

********* Start DrawDataLineByPercentage ******** The first parameter is a map In this map, string is the subject's title on each vertex

func DrawLine

func DrawLine(x0, y0, x1, y1, thick int, c color.RGBA, rgba *image.RGBA)

******** Start DrawLine *******

func DrawString

func DrawString(x, y int, content string, rgba *image.RGBA, fontColor color.RGBA)

func GCD

func GCD(x, y int) int

GCD

func GetRadiusRadians

func GetRadiusRadians(img *image.RGBA, n int) (radius int, radians float64)

This function only used for generate point position.

Get Radius according to the img's X & Y axis.

Get Radians according to N and radius.

func NewImagePath

func NewImagePath() (string, error)

Create a new image

The first parameter(A int array) indicates the maximum value of X-axis & Y-axis

This function could create PNG & JPEG file, you can determine it with a specific imageType string, you can ignore it to use default type -- PNG.

If you enter a wrong imageType string or not supported imageType, it would be change to default imageType.

This function returns a string -- new picture's path.

func Pow

func Pow(x, n int) int

func SetSize

func SetSize(size ...int) (img image.Rectangle)

Set maximum X & Y

If not require size, it will set default size dx = 2560, dy = 2560

If there's only one parameter, it will set X and let Y use default value

If there're more than one parameter, only use the previous two parameter

This function return an image.Rectangle

func ToInt

func ToInt(f float64) int

round to integer