shapes

package
v0.0.0-...-cb98339 Latest Latest
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 Go to latest Published: Mar 8, 2024 License: MIT Imports: 21 Imported by: 0

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Index

Constants

View Source 
const GradientBoundsMax = -GradientBoundsMin
View Source 
const GradientBoundsMin swftypes.Twip = math.MinInt16 / 2
View Source 
const GradientRatioDivisor = math.MaxUint8
View Source 
const PolygonSimplifyTolerance = 0.01

Variables

View Source 
var GradientBounds = Rectangle[float64]{
	TopLeft:     math2.NewVector2[float64](GradientBoundsMin.Float64(), GradientBoundsMin.Float64()),
	BottomRight: math2.NewVector2[float64](GradientBoundsMax.Float64(), GradientBoundsMax.Float64()),
}

Functions

func DrawPathListFromSWFMorph 

func DrawPathListFromSWFMorph(collection ObjectCollection, startRecords, endRecords subtypes.SHAPERECORDS, startStyles, endStyles StyleList) (DrawPathList, DrawPathList)

func ImageToPNG 

func ImageToPNG(im image.Image, fname string) error

func IterateMorphShape 

func IterateMorphShape(start, end Shape) (r []records.RecordPair)

func LerpFillable 

func LerpFillable(start, end any, ratio float64) any

func NewContourFromEdges 

func NewContourFromEdges(edges []records.LineRecord) (p polyclip.Contour)

func NewPolygonFromShape 

func NewPolygonFromShape(shape Shape) (g polyclip.Polygon)

func QuantizeBitmap 

func QuantizeBitmap(i image.Image) image.Image

Types

type ActivePath 

type ActivePath struct {
	Segment PathSegment[types.Twip]
	StyleId int
}

func NewActivePath 

func NewActivePath(styleId int, start math.Vector2[types.Twip]) *ActivePath

func (*ActivePath) AddPoint 

func (p *ActivePath) AddPoint(point VisitedPoint[types.Twip])

func (*ActivePath) Flip 

func (p *ActivePath) Flip()

type Bitmap 

type Bitmap struct {
	List DrawPathList

	Transform math2.MatrixTransform
}

func BitmapFillFromSWF 

func BitmapFillFromSWF(l DrawPathList, transform types.MATRIX) Bitmap

func (Bitmap) ApplyColorTransform 

func (b Bitmap) ApplyColorTransform(transform math2.ColorTransform) Fillable

func (Bitmap) ApplyMatrixTransform 

func (b Bitmap) ApplyMatrixTransform(transform math2.MatrixTransform, applyTranslation bool) Fillable

func (Bitmap) Fill 

func (b Bitmap) Fill(shape Shape) DrawPathList

type Capper 

type Capper func(from, to math.Vector2[float64]) PathSegment[float64]
var ButtCapper Capper = func(from, to math.Vector2[float64]) PathSegment[float64] {
	return PathSegment[float64]{
		{
			Pos:             from,
			IsBezierControl: false,
		},
		{
			Pos:             to,
			IsBezierControl: false,
		},
	}
}
var RoundCapper Capper = func(from, to math.Vector2[float64]) PathSegment[float64] {
	mid := from.AddVector(to).Divide(2)

	ellipseDrawQuarter(mid, from.SubVector(mid)).ToLineRecords(1)
	ellipseDrawQuarter(mid, to.SubVector(mid)).ToLineRecords(1)
	return PathSegment[float64]{
		{
			Pos:             from,
			IsBezierControl: false,
		},
		{
			Pos:             to,
			IsBezierControl: false,
		},
	}
}

type ClipPath 

type ClipPath struct {
	Clip ComplexPolygon
}

func NewClipPath 

func NewClipPath(shape Shape) *ClipPath

func (*ClipPath) AddShape 

func (c *ClipPath) AddShape(shape Shape)

func (*ClipPath) ApplyMatrixTransform 

func (c *ClipPath) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) *ClipPath

func (*ClipPath) ClipShape 

func (c *ClipPath) ClipShape(o Shape, recover bool) (r Shape)

ClipShape Clips a shape, but attempts to recover original curved records

func (*ClipPath) GetShape 

func (c *ClipPath) GetShape() Shape

func (*ClipPath) Intersect 

func (c *ClipPath) Intersect(o *ClipPath) *ClipPath

func (*ClipPath) Merge 

func (c *ClipPath) Merge(o *ClipPath) *ClipPath

type Complex 

type Complex interface {
	Draw() Shape
}

type ComplexPolygon 

type ComplexPolygon struct {
	Pol polyclip.Polygon
}

func (ComplexPolygon) Draw 

func (p ComplexPolygon) Draw() Shape

func (ComplexPolygon) GetShape 

func (p ComplexPolygon) GetShape() (r Shape)

func (ComplexPolygon) Intersect 

func (p ComplexPolygon) Intersect(o ComplexPolygon) ComplexPolygon

func (ComplexPolygon) Merge 

func (p ComplexPolygon) Merge(o ComplexPolygon) ComplexPolygon

type DrawPath 

type DrawPath struct {
	Style StyleRecord
	Shape Shape
}

func DrawPathFill 

func DrawPathFill(record *FillStyleRecord, shape Shape) DrawPath

func DrawPathStroke 

func DrawPathStroke(record *LineStyleRecord, shape Shape) DrawPath

func (DrawPath) ApplyColorTransform 

func (p DrawPath) ApplyColorTransform(transform math.ColorTransform) (r DrawPath)

func (DrawPath) ApplyMatrixTransform 

func (p DrawPath) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) (r DrawPath)

type DrawPathList 

type DrawPathList []DrawPath

func ConvertBitmapBytesToDrawPathList 

func ConvertBitmapBytesToDrawPathList(imageData []byte, alphaData []byte) (DrawPathList, error)

func ConvertBitmapToDrawPathList 

func ConvertBitmapToDrawPathList(i image.Image) (r DrawPathList)

func DrawPathListFromSWF 

func DrawPathListFromSWF(collection ObjectCollection, records subtypes.SHAPERECORDS, styles StyleList) DrawPathList

func (DrawPathList) ApplyColorTransform 

func (l DrawPathList) ApplyColorTransform(transform math.ColorTransform) Fillable

func (DrawPathList) ApplyFunction 

func (l DrawPathList) ApplyFunction(f func(p DrawPath) DrawPath) (r DrawPathList)

func (DrawPathList) ApplyMatrixTransform 

func (l DrawPathList) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) Fillable

func (DrawPathList) Fill 

func (l DrawPathList) Fill(shape Shape) (r DrawPathList)

func (DrawPathList) Merge 

func (l DrawPathList) Merge(b DrawPathList) DrawPathList

type Ellipse 

type Ellipse[T ~float64 | ~int64] struct {
	Center, Radius math.Vector2[T]
}

func NewCircle 

func NewCircle[T ~float64 | ~int64](center math.Vector2[T], radius T) Ellipse[T]

func (Ellipse[T]) Draw 

func (r Ellipse[T]) Draw() Shape

type FillStyleRecord 

type FillStyleRecord struct {
	// Fill can be math.Color or Fillable
	Fill   any
	Border *LineStyleRecord
	Blur   float64
	// contains filtered or unexported fields
}

func FillStyleRecordFromSWF 

func FillStyleRecordFromSWF(collection ObjectCollection, fillType swfsubtypes.FillStyleType, color swftypes.Color, gradient swfsubtypes.GRADIENT, focalGradient swfsubtypes.FOCALGRADIENT, gradientMatrix, bitmapMatrix swftypes.MATRIX, bitmapId uint16) (r *FillStyleRecord)

func FillStyleRecordFromSWFMORPHFILLSTYLE 

func FillStyleRecordFromSWFMORPHFILLSTYLE(collection ObjectCollection, fillStyle swfsubtypes.MORPHFILLSTYLE) (start, end *FillStyleRecord)

func LerpFillStyle 

func LerpFillStyle(start, end *FillStyleRecord, ratio float64) *FillStyleRecord

func (*FillStyleRecord) ApplyColorTransform 

func (r *FillStyleRecord) ApplyColorTransform(transform math.ColorTransform) StyleRecord

func (*FillStyleRecord) ApplyMatrixTransform 

func (r *FillStyleRecord) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) StyleRecord

func (*FillStyleRecord) Flatten 

func (r *FillStyleRecord) Flatten(s Shape) DrawPathList

Flatten Creates a fill that is only composed of FillStyleRecord with Fill being math.Color

func (*FillStyleRecord) IsFlat 

func (r *FillStyleRecord) IsFlat() bool

type Fillable 

type Fillable interface {
	Fill(shape Shape) DrawPathList
	ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) Fillable
	ApplyColorTransform(transform math.ColorTransform) Fillable
}

type Gradient 

type Gradient struct {
	Records []GradientItem

	Transform         math2.MatrixTransform
	SpreadMode        swfsubtypes.GradientSpreadMode
	InterpolationMode swfsubtypes.GradientInterpolationMode

	Interpolation func(self Gradient, overlap, blur float64, gradientSlices int, bb Rectangle[float64]) DrawPathList
}

func LerpGradient 

func LerpGradient(start, end Gradient, ratio float64) Gradient

func LinearGradientFromSWF 

func LinearGradientFromSWF(records []swfsubtypes.GRADRECORD, transform types.MATRIX, spreadMode swfsubtypes.GradientSpreadMode, interpolationMode swfsubtypes.GradientInterpolationMode) Gradient

func RadialGradientFromSWF 

func RadialGradientFromSWF(records []swfsubtypes.GRADRECORD, transform types.MATRIX, spreadMode swfsubtypes.GradientSpreadMode, interpolationMode swfsubtypes.GradientInterpolationMode) Gradient

func (Gradient) ApplyColorTransform 

func (g Gradient) ApplyColorTransform(transform math2.ColorTransform) Fillable

func (Gradient) ApplyMatrixTransform 

func (g Gradient) ApplyMatrixTransform(transform math2.MatrixTransform, applyTranslation bool) Fillable

func (Gradient) Fill 

func (g Gradient) Fill(shape Shape) DrawPathList

func (Gradient) GetInterpolatedDrawPaths 

func (g Gradient) GetInterpolatedDrawPaths(overlap, blur float64, gradientSlices int, bb Rectangle[float64]) DrawPathList

func (Gradient) GetItems 

func (g Gradient) GetItems() []GradientItem

func (Gradient) Interpolate 

func (g Gradient) Interpolate(gradientSlices int) (result []GradientSlice)

type GradientItem 

type GradientItem struct {
	Ratio uint8
	Color math2.Color
}

func GradientItemFromSWF 

func GradientItemFromSWF(ratio uint8, color swftypes.Color) GradientItem

type GradientSlice 

type GradientSlice struct {
	Start, End float64
	Color      math2.Color
}

type Joiner 

type Joiner func(from, to math.Vector2[float64]) PathSegment[float64]
var StraightJoiner Joiner = func(from, to math.Vector2[float64]) PathSegment[float64] {
	return PathSegment[float64]{
		{
			Pos:             from,
			IsBezierControl: false,
		},
		{
			Pos:             to,
			IsBezierControl: false,
		},
	}
}

type LineStyleRecord 

type LineStyleRecord struct {
	Width float64
	Color math.Color
	Blur  float64
}

func LerpLineStyle 

func LerpLineStyle(start, end *LineStyleRecord, ratio float64) *LineStyleRecord

func LineStyleRecordFromSWF 

func LineStyleRecordFromSWF(width uint16, blur float64, hasFill bool, c swftypes.Color, fill *FillStyleRecord) (r *LineStyleRecord)

func LineStyleRecordFromSWFMORPHLINESTYLE 

func LineStyleRecordFromSWFMORPHLINESTYLE(lineStyle swfsubtypes.MORPHLINESTYLE) (start, end *LineStyleRecord)

func LineStyleRecordFromSWFMORPHLINESTYLE2 

func LineStyleRecordFromSWFMORPHLINESTYLE2(collection ObjectCollection, lineStyle swfsubtypes.MORPHLINESTYLE2) (start, end *LineStyleRecord)

func (*LineStyleRecord) ApplyColorTransform 

func (r *LineStyleRecord) ApplyColorTransform(transform math.ColorTransform) StyleRecord

func (*LineStyleRecord) ApplyMatrixTransform 

func (r *LineStyleRecord) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) StyleRecord

func (*LineStyleRecord) StrokeWidth 

func (r *LineStyleRecord) StrokeWidth(transform math.MatrixTransform) float64

type MedianCutQuantizer 

type MedianCutQuantizer struct {
	NumColor int
}

MedianCutQuantizer constructs a palette with a maximum of NumColor colors by iteratively splitting clusters of color points mapped on a three-dimensional (RGB) Euclidian space. Once the number of clusters is within the specified bounds, the resulting color is computed by averaging those within each grouping.

func (*MedianCutQuantizer) Quantize 

func (q *MedianCutQuantizer) Quantize(dst *image.Paletted, r image.Rectangle, src image.Image, sp image.Point)

type ObjectCollection 

type ObjectCollection map[uint16]ObjectDefinition

func (ObjectCollection) Add 

func (o ObjectCollection) Add(def ObjectDefinition)

func (ObjectCollection) Clone 

func (o ObjectCollection) Clone() ObjectCollection

func (ObjectCollection) Get 

func (o ObjectCollection) Get(objectId uint16) ObjectDefinition

type ObjectDefinition 

type ObjectDefinition interface {
	GetObjectId() uint16
	GetSafeObject() ObjectDefinition
	GetShapeList(p ObjectProperties) DrawPathList
}

type ObjectProperties 

type ObjectProperties struct {
	Ratio      float64
	Visible    bool
	PlaceFrame int64
	// Data can be any value internal to the object itself
	Data any
}

type PathSegment 

type PathSegment[T ~float64 | ~int64] []VisitedPoint[T]

func NewPathSegment 

func NewPathSegment[T ~float64 | ~int64](start math.Vector2[T]) PathSegment[T]

func (*PathSegment[T]) AddPoint 

func (s *PathSegment[T]) AddPoint(p VisitedPoint[T])

func (*PathSegment[T]) End 

func (s *PathSegment[T]) End() math.Vector2[T]

func (*PathSegment[T]) Flip 

func (s *PathSegment[T]) Flip()

Flip Flips the direction of the path segment. Flash fill paths are dual-sided, with fill style 1 indicating the positive side and fill style 0 indicating the negative. We have to flip fill style 0 paths in order to link them to fill style 1 paths.

func (*PathSegment[T]) GetShape 

func (s *PathSegment[T]) GetShape() (shape Shape)

func (*PathSegment[T]) IsClosed 

func (s *PathSegment[T]) IsClosed() bool

func (*PathSegment[T]) IsEmpty 

func (s *PathSegment[T]) IsEmpty() bool

func (*PathSegment[T]) Merge 

func (s *PathSegment[T]) Merge(o PathSegment[T])

func (*PathSegment[T]) Start 

func (s *PathSegment[T]) Start() math.Vector2[T]

func (*PathSegment[T]) Swap 

func (s *PathSegment[T]) Swap(o *PathSegment[T])

func (*PathSegment[T]) TryMerge 

func (s *PathSegment[T]) TryMerge(o *PathSegment[T], isDirected bool) bool

type PendingPath 

type PendingPath[T ~float64 | ~int64] []*PathSegment[T]

func (*PendingPath[T]) GetShape 

func (p *PendingPath[T]) GetShape() (shape Shape)

func (*PendingPath[T]) MergePath 

func (p *PendingPath[T]) MergePath(newSegment *PathSegment[T], directed bool)

type PendingPathMap 

type PendingPathMap map[int]*PendingPath[types.Twip]

func (PendingPathMap) MergePath 

func (m PendingPathMap) MergePath(p *ActivePath, directed bool)

type RecordCorrespondence 

type RecordCorrespondence struct {
	Original  records.Record
	Flattened []records.Record
}

type Rectangle 

type Rectangle[T ~float64 | ~int64] struct {
	TopLeft, BottomRight math.Vector2[T]
}

func NewSquare 

func NewSquare[T ~float64 | ~int64](topLeft math.Vector2[T], size T) Rectangle[T]

func RectangleFromSWF 

func RectangleFromSWF(rect types.RECT) Rectangle[float64]

func RectangleToType 

func RectangleToType[T ~int64 | ~float64, T2 ~int64 | ~float64](r Rectangle[T]) Rectangle[T2]

func (Rectangle[T]) Area 

func (r Rectangle[T]) Area() T

func (Rectangle[T]) Divide 

func (r Rectangle[T]) Divide(size T) Rectangle[T]

func (Rectangle[T]) Draw 

func (r Rectangle[T]) Draw() Shape

func (Rectangle[T]) DrawOpen 

func (r Rectangle[T]) DrawOpen() []records.Record

func (Rectangle[T]) Height 

func (r Rectangle[T]) Height() T

func (Rectangle[T]) InBounds 

func (r Rectangle[T]) InBounds(pos math.Vector2[T]) bool

func (Rectangle[T]) Multiply 

func (r Rectangle[T]) Multiply(size T) Rectangle[T]

func (Rectangle[T]) Width 

func (r Rectangle[T]) Width() T

type Shape 

type Shape []records.Record

func (Shape) ApplyMatrixTransform 

func (s Shape) ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) (newShape Shape)

func (Shape) BoundingBox 

func (s Shape) BoundingBox() Rectangle[float64]

func (Shape) End 

func (s Shape) End() math.Vector2[float64]

func (Shape) Equals 

func (s Shape) Equals(o Shape) bool

func (Shape) Flatten 

func (s Shape) Flatten() (r Shape)

Flatten Converts all non-linear records into line segments and returns a new Shape

func (Shape) FlattenWithCorrespondence 

func (s Shape) FlattenWithCorrespondence() (r Shape, ix []RecordCorrespondence)

func (Shape) IsClosed 

func (s Shape) IsClosed() bool

func (Shape) IsFlat 

func (s Shape) IsFlat() bool

func (Shape) Merge 

func (s Shape) Merge(o Shape) (r Shape)

func (Shape) Reverse 

func (s Shape) Reverse() (r Shape)

func (Shape) Start 

func (s Shape) Start() math.Vector2[float64]

func (Shape) String 

func (s Shape) String() (r string)

type ShapeConverter 

type ShapeConverter struct {
	Collection ObjectCollection
	Styles     StyleList

	FillStyle0 *ActivePath
	FillStyle1 *ActivePath
	LineStyle  *ActivePath

	Position math.Vector2[types.Twip]

	Fills, Strokes PendingPathMap

	Commands DrawPathList

	Finished bool
}

func NewMorphShapeConverter 

func NewMorphShapeConverter(collection ObjectCollection, styles StyleList) *ShapeConverter

func NewShapeConverter 

func NewShapeConverter(collection ObjectCollection, styles StyleList) *ShapeConverter

func (*ShapeConverter) Convert 

func (c *ShapeConverter) Convert(elements subtypes.SHAPERECORDS) DrawPathList

func (*ShapeConverter) ConvertMorph 

func (c *ShapeConverter) ConvertMorph(start, end subtypes.SHAPERECORDS) (startList, endList subtypes.SHAPERECORDS)

ConvertMorph We step through both the start records and end records, interpolating edges pairwise. Fill style/line style changes should only appear in the start records. However, StyleChangeRecord move_to can appear it both start and end records, and not necessarily in matching pairs; therefore, we have to keep track of the pen position in case one side is missing a move_to; it will implicitly use the last pen position.

func (*ShapeConverter) FlushLayer 

func (c *ShapeConverter) FlushLayer()

func (*ShapeConverter) FlushPaths 

func (c *ShapeConverter) FlushPaths()

func (*ShapeConverter) HandleNode 

func (c *ShapeConverter) HandleNode(node subtypes.SHAPERECORD)

func (*ShapeConverter) VisitPoint 

func (c *ShapeConverter) VisitPoint(pos math.Vector2[types.Twip], isBezierControlPoint bool)

type StrokeConverter 

type StrokeConverter struct {
	HalfWidth  float64
	MiterLimit float64
	Cap        Capper
	Join       Joiner

	Position math.Vector2[float64]

	Segment [2]PathSegment[float64]
}

func (*StrokeConverter) Close 

func (c *StrokeConverter) Close() PathSegment[float64]

func (*StrokeConverter) Line 

func (c *StrokeConverter) Line(v math.Vector2[float64])

type StyleList 

type StyleList struct {
	FillStyles []*FillStyleRecord
	LineStyles []*LineStyleRecord
}

func StyleListFromSWFItems 

func StyleListFromSWFItems(collection ObjectCollection, fillStyles subtypes.FILLSTYLEARRAY, lineStyles subtypes.LINESTYLEARRAY) (r StyleList)

func StyleListFromSWFMorphItems 

func StyleListFromSWFMorphItems(collection ObjectCollection, fillStyles subtypes.MORPHFILLSTYLEARRAY, lineStyles subtypes.MORPHLINESTYLEARRAY) (start, end StyleList)

func (StyleList) GetFillStyle 

func (l StyleList) GetFillStyle(i int) *FillStyleRecord

func (StyleList) GetLineStyle 

func (l StyleList) GetLineStyle(i int) *LineStyleRecord

type StyleRecord 

type StyleRecord interface {
	ApplyColorTransform(transform math.ColorTransform) StyleRecord
	ApplyMatrixTransform(transform math.MatrixTransform, applyTranslation bool) StyleRecord
}

type VisitedPoint 

type VisitedPoint[T ~float64 | ~int64] struct {
	Pos math.Vector2[T]

	IsBezierControl bool
}

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