util

package
v0.0.0-...-2adf51d Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Dec 29, 2024 License: Apache-2.0 Imports: 9 Imported by: 1

Documentation

Index

Constants

View Source 
const (
	Width4K  = 3840            // 4K resolution
	Height4K = 2160            // 4K resolution
	ToRad    = math.Pi / 180.0 // Degrees to Radians
)
View Source 
const (
	TestCardBasePriority   = 1100 // TestCards background
	TestCardLowerPriority  = 1125 // TestCards mid-ground
	TestCardUpperPriority  = 1175 // TestCards mid-ground
	TestCardTopPriority    = 1199 // TestCards foreground
	DialBackgroundPriority = 2000 // Clock dial background
	ClockPriority          = 2040 // Countdown Clock
	DialForegroundPriority = 2050 // Clock dial foreground
	TitlePriority          = 2100 // Title
	BoxPriority            = 3000 // Box and derivatives if not implicitly defined
)

Renderer priorities

Variables

This section is empty.

Functions

func DrawColourBars 

func DrawColourBars(gc *draw2dimg.GraphicContext, bounds Rectangle, cols ...color.Color) (float64, float64)

func DrawColourBarsVertical 

func DrawColourBarsVertical(gc *draw2dimg.GraphicContext, bounds Rectangle, cols ...color.Color) (float64, float64)

func DrawStringCenter 

func DrawStringCenter(gc *draw2dimg.GraphicContext, x, y float64, s string, a ...interface{}) float64

func DrawStringLeft 

func DrawStringLeft(gc *draw2dimg.GraphicContext, x, y float64, s string, a ...interface{}) float64

func DrawStringRight 

func DrawStringRight(gc *draw2dimg.GraphicContext, x, y float64, s string, a ...interface{}) float64

func FitString 

func FitString(l, t, r, b, sl, st, sr, sb float64) (float64, float64, float64, float64)

func FloatToA 

func FloatToA(v float64) string

func Limit 

func Limit(d, a, b int) int

Limit limits d so it lies within a and b inclusively.

func LimitU16 

func LimitU16(d int) uint16

LimitU16 limits d within 0...65535

func LimitU32 

func LimitU32(d int) uint32

LimitU32 is identical to LimitU16 but used as image.RGBA uses uint32 with uint16 limits

func LimitU8 

func LimitU8(d int) uint8

LimitU8 limits d within 0...255

func Max 

func Max(a, b int) int

func MaxSlice 

func MaxSlice(a []uint32) uint32

MaxSlice returns the max values for a slice

func MaxU32 

func MaxU32(a, b uint32) uint32

func MaxU8 

func MaxU8(a, b uint8) uint8

func Min 

func Min(a, b int) int

func MinMax 

func MinMax(a []uint32) (uint32, uint32)

MinMax returns the min and max values for a slice

func MinU32 

func MinU32(a, b uint32) uint32

func MinU8 

func MinU8(a, b uint8) uint8

func Within 

func Within(frame, start, end int) bool

Within returns true if frame is within start...end inclusively

Types

type Alignment 

type Alignment uint8
const (
	LeftAlignment Alignment = iota
	CenterAlignment
	RightAlignment
)

func (Alignment) Fill 

func (a Alignment) Fill(gc *draw2dimg.GraphicContext, bounds image.Rectangle, lineSpacing float64, format string, args ...interface{}) float64

Fill fills the provided string based on this Alignment. If the string contains "\n" then it will be split and rendered as multiple lines.

gc GraphicContext to draw to bounds image.Rectangle of the area to contain the string lineSpacing space to add between lines format,args passed to fmt.Sprintf() before rendering

func (Alignment) FillStroke 

func (a Alignment) FillStroke(gc *draw2dimg.GraphicContext, bounds image.Rectangle, lineSpacing float64, format string, args ...interface{}) float64

FillStroke fills then strokes the string based on this Alignment. If the string contains "\n" then it will be split and rendered as multiple lines.

gc GraphicContext to draw to bounds image.Rectangle of the area to contain the string lineSpacing space to add between lines format,args passed to fmt.Sprintf() before rendering

func (Alignment) Metrics 

func (a Alignment) Metrics(gc *draw2dimg.GraphicContext, bounds image.Rectangle, lineSpacing float64, format string, args ...interface{}) *AlignmentMetrics

func (Alignment) Stroke 

func (a Alignment) Stroke(gc *draw2dimg.GraphicContext, bounds image.Rectangle, lineSpacing float64, format string, args ...interface{}) float64

Stroke the string based on this Alignment. If the string contains "\n" then it will be split and rendered as multiple lines.

gc GraphicContext to draw to bounds image.Rectangle of the area to contain the string lineSpacing space to add between lines format,args passed to fmt.Sprintf() before rendering

type AlignmentMetrics 

type AlignmentMetrics struct {
	Bounds        image.Rectangle // Bounds of container
	ContentBounds image.Rectangle // Bounds of string within container
	MaxLineHeight float64         // Max line height over all lines
	MaxLineWidth  float64         // Max width of all lines
	BaseLines     []float64       // baseline for each line
	Widths        []float64       // Width of each line
	Lines         []string        // Line strings
	// contains filtered or unexported fields
}

func (*AlignmentMetrics) Fill 

func (m *AlignmentMetrics) Fill(gc *draw2dimg.GraphicContext) float64

Fill fills the string defined in this AlignmentMetrics into the supplied GraphicContext

func (*AlignmentMetrics) FillStroke 

func (m *AlignmentMetrics) FillStroke(gc *draw2dimg.GraphicContext) float64

FillStroke first fills then strokes the string defined in this AlignmentMetrics into the supplied GraphicContext

func (*AlignmentMetrics) Merge 

func (m *AlignmentMetrics) Merge(b *AlignmentMetrics)

Merge ensures that the line heights of both sets of metrics are the same. This is useful for when two sets need to line up with each other

func (*AlignmentMetrics) Stroke 

func (m *AlignmentMetrics) Stroke(gc *draw2dimg.GraphicContext) float64

Stroke the string defined in this AlignmentMetrics into the supplied GraphicContext

type Rectangle 

type Rectangle struct {
	X1, Y1, X2, Y2 float64
}

func GetStringBounds 

func GetStringBounds(gc *draw2dimg.GraphicContext, s string) Rectangle

func Rect 

func Rect(x1, y1, x2, y2 float64) Rectangle

func RectFromRect 

func RectFromRect(rect image.Rectangle) Rectangle

func StringSize 

func StringSize(gc *draw2dimg.GraphicContext, s string, a ...interface{}) Rectangle

func (Rectangle) Add 

func (r Rectangle) Add(b Rectangle) Rectangle

Add returns a Rectangle that contains both rectangles

func (Rectangle) AddPath 

func (r Rectangle) AddPath(ctx draw2d.GraphicContext)

func (Rectangle) Expand 

func (r Rectangle) Expand(l, t, right, b float64) Rectangle

func (Rectangle) Height 

func (r Rectangle) Height() float64

func (Rectangle) IsZero 

func (r Rectangle) IsZero() bool

func (Rectangle) Rect 

func (r Rectangle) Rect() image.Rectangle

func (Rectangle) Reduce 

func (r Rectangle) Reduce(l, t, right, b float64) Rectangle

func (Rectangle) String 

func (r Rectangle) String() string

func (Rectangle) Width 

func (r Rectangle) Width() float64

Source Files

View all Source files

Directories

Path Synopsis
goexr
exr
Package exr contains an implementation of an OpenEXR image decoder.
 Package exr contains an implementation of an OpenEXR image decoder.
exr/internal/exr
Package units defines units of length such as inches or pixels.
 Package units defines units of length such as inches or pixels.

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.