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rasterx

package module

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Versions in this module

v0

v0.1.0

Oct 29, 2026

Changes in this version

+ const MaxDx

+ var ButtCap CapFunc = func(p Adder, a, eNorm fixed.Point26_6)

+ var CubicCap CapFunc = func(p Adder, a, eNorm fixed.Point26_6)

+ var CubicGap GapFunc = func(p Adder, a, tNorm, lNorm fixed.Point26_6)

+ var FlatGap GapFunc = func(p Adder, a, tNorm, lNorm fixed.Point26_6)

+ var Identity = Matrix2D

+ var QuadraticCap CapFunc = func(p Adder, a, eNorm fixed.Point26_6)

+ var QuadraticGap GapFunc = func(p Adder, a, tNorm, lNorm fixed.Point26_6)

+ var RoundCap CapFunc = func(p Adder, a, eNorm fixed.Point26_6)

+ var RoundGap GapFunc = func(p Adder, a, tNorm, lNorm fixed.Point26_6)

+ var SquareCap CapFunc = func(p Adder, a, eNorm fixed.Point26_6)

+ func AddArc(points []float64, cx, cy, px, py float64, p Adder) (lx, ly float64)

+ func AddCircle(cx, cy, r float64, p Adder)

+ func AddEllipse(cx, cy, rx, ry, rot float64, p Adder)

+ func AddRect(minX, minY, maxX, maxY, rot float64, p Adder)

+ func AddRoundRect(minX, minY, maxX, maxY, rx, ry, rot float64, gf GapFunc, p Adder)

+ func ApplyOpacity(c color.Color, opacity float64) color.NRGBA

+ func CalcIntersect(a1, a2, b1, b2 fixed.Point26_6) (x fixed.Point26_6)

+ func CircleCircleIntersection(ct, cl fixed.Point26_6, rt, rl fixed.Int26_6) (xt1, xt2 fixed.Point26_6, intersects bool)

+ func ClosestPortside(bow, stern, p1, p2 fixed.Point26_6, isIntersecting bool) (xt fixed.Point26_6, intersects bool)

+ func CubeTo(ax, ay, bx, by, cx, cy, dx, dy float32, LineTo func(ex, ey float32))

+ func DotProd(p fixed.Point26_6, q fixed.Point26_6) fixed.Int52_12

+ func FindEllipseCenter(ra, rb *float64, rotX, startX, startY, endX, endY float64, ...) (cx, cy float64)

+ func GapToCap(p Adder, a, eNorm fixed.Point26_6, gf GapFunc)

+ func Invert(v fixed.Point26_6) fixed.Point26_6

+ func Length(v fixed.Point26_6) fixed.Int26_6

+ func QuadTo(ax, ay, bx, by, cx, cy float32, LineTo func(dx, dy float32))

+ func RadCurvature(p0, p1, p2 fixed.Point26_6, dm fixed.Int52_12) fixed.Int26_6

+ func RayCircleIntersection(s1, s2, c fixed.Point26_6, r fixed.Int26_6) (x fixed.Point26_6, intersects bool)

+ func RayCircleIntersectionF(s1X, s1Y, s2X, s2Y, cX, cY, r float64) (x, y float64, intersects bool)

+ func ToFixedP(x, y float64) (p fixed.Point26_6)

+ func ToLength(p fixed.Point26_6, ln fixed.Int26_6) (q fixed.Point26_6)

+ type Adder interface

+ CubeBezier func(b, c, d fixed.Point26_6)

+ Line func(b fixed.Point26_6)

+ QuadBezier func(b, c fixed.Point26_6)

+ Start func(a fixed.Point26_6)

+ Stop func(closeLoop bool)

+ type C2Point struct

+ LNorm fixed.Point26_6

+ LTan fixed.Point26_6

+ P fixed.Point26_6

+ RL fixed.Int26_6

+ RT fixed.Int26_6

+ TNorm fixed.Point26_6

+ TTan fixed.Point26_6

+ type CapFunc func(p Adder, a, eNorm fixed.Point26_6)

+ type ClipImage struct

+ func (c *ClipImage) At(x, y int) color.Color

+ type ColorFunc func(x, y int) color.Color

+ type ColorFuncImage struct

+ func (c *ColorFuncImage) At(x, y int) color.Color

+ type Dasher struct

+ DashOffset fixed.Int26_6

+ Dashes []fixed.Int26_6

+ func NewDasher(width, height int, scanner Scanner) *Dasher

+ func (r *Dasher) CubeBezier(b, c, d fixed.Point26_6)

+ func (r *Dasher) Line(b fixed.Point26_6)

+ func (r *Dasher) QuadBezier(b, c fixed.Point26_6)

+ func (r *Dasher) SetStroke(width, miterLimit fixed.Int26_6, capL, capT CapFunc, gp GapFunc, jm JoinMode, ...)

+ func (r *Dasher) Start(a fixed.Point26_6)

+ func (r *Dasher) Stop(isClosed bool)

+ type Filler struct

+ func NewFiller(width, height int, scanner Scanner) *Filler

+ func (r *Filler) Clear()

+ func (r *Filler) CubeBezier(b, c, d fixed.Point26_6)

+ func (r *Filler) CubeBezierF(sgm Rasterx, b, c, d fixed.Point26_6)

+ func (r *Filler) Line(b fixed.Point26_6)

+ func (r *Filler) QuadBezier(b, c fixed.Point26_6)

+ func (r *Filler) QuadBezierF(sgm Rasterx, b, c fixed.Point26_6)

+ func (r *Filler) SetBounds(width, height int)

+ func (r *Filler) Start(a fixed.Point26_6)

+ func (r *Filler) Stop(isClosed bool)

+ type GapFunc func(p Adder, a, tNorm, lNorm fixed.Point26_6)

+ type GradStop struct

+ Offset float64

+ Opacity float64

+ StopColor color.Color

+ type Gradient struct

+ Bounds struct{ ... }

+ IsRadial bool

+ Matrix Matrix2D

+ Points [5]float64

+ Spread SpreadMethod

+ Stops []GradStop

+ Units GradientUnits

+ func (g *Gradient) GetColorFunction(opacity float64) interface{}

+ func (g *Gradient) GetColorFunctionUS(opacity float64, objMatrix Matrix2D) interface{}

+ type GradientUnits byte

+ const ObjectBoundingBox

+ const UserSpaceOnUse

+ type JoinMode uint8

+ const Arc

+ const ArcClip

+ const Bevel

+ const Miter

+ const MiterClip

+ const Round

+ type Matrix2D struct

+ A float64

+ B float64

+ C float64

+ D float64

+ E float64

+ F float64

+ func (a Matrix2D) Invert() Matrix2D

+ func (a Matrix2D) Mult(b Matrix2D) Matrix2D

+ func (a Matrix2D) Rotate(theta float64) Matrix2D

+ func (a Matrix2D) Scale(x, y float64) Matrix2D

+ func (a Matrix2D) SkewX(theta float64) Matrix2D

+ func (a Matrix2D) SkewY(theta float64) Matrix2D

+ func (a Matrix2D) TFixed(x fixed.Point26_6) (y fixed.Point26_6)

+ func (a Matrix2D) Transform(x1, y1 float64) (x2, y2 float64)

+ func (a Matrix2D) TransformVector(x1, y1 float64) (x2, y2 float64)

+ func (a Matrix2D) Translate(x, y float64) Matrix2D

+ type MatrixAdder struct

+ M Matrix2D

+ func (t *MatrixAdder) CubeBezier(b, c, d fixed.Point26_6)

+ func (t *MatrixAdder) Line(b fixed.Point26_6)

+ func (t *MatrixAdder) QuadBezier(b, c fixed.Point26_6)

+ func (t *MatrixAdder) Reset()

+ func (t *MatrixAdder) Start(a fixed.Point26_6)

+ type Path []fixed.Int26_6

+ func (p *Path) Clear()

+ func (p *Path) CubeBezier(b, c, d fixed.Point26_6)

+ func (p *Path) Line(b fixed.Point26_6)

+ func (p *Path) QuadBezier(b, c fixed.Point26_6)

+ func (p *Path) Start(a fixed.Point26_6)

+ func (p *Path) Stop(closeLoop bool)

+ func (p Path) AddTo(q Adder)

+ func (p Path) String() string

+ func (p Path) ToSVGPath() string

+ type PathCommand fixed.Int26_6

+ const PathClose

+ const PathCubicTo

+ const PathLineTo

+ const PathMoveTo

+ const PathQuadTo

+ type Rasterx interface

+ type Scanner interface

+ Clear func()

+ Draw func()

+ GetPathExtent func() fixed.Rectangle26_6

+ Line func(b fixed.Point26_6)

+ SetBounds func(w, h int)

+ SetClip func(rect image.Rectangle)

+ SetColor func(color interface{})

+ SetWinding func(useNonZeroWinding bool)

+ Start func(a fixed.Point26_6)

+ type ScannerGV struct

+ Dest draw.Image

+ Offset image.Point

+ Source image.Image

+ Targ image.Rectangle

+ func NewScannerGV(width, height int, dest draw.Image, targ image.Rectangle) *ScannerGV

+ func (s *ScannerGV) Clear()

+ func (s *ScannerGV) Draw()

+ func (s *ScannerGV) GetPathExtent() fixed.Rectangle26_6

+ func (s *ScannerGV) Line(b fixed.Point26_6)

+ func (s *ScannerGV) SetBounds(width, height int)

+ func (s *ScannerGV) SetClip(rect image.Rectangle)

+ func (s *ScannerGV) SetColor(clr interface{})

+ func (s *ScannerGV) SetWinding(useNonZeroWinding bool)

+ func (s *ScannerGV) Start(a fixed.Point26_6)

+ type SpreadMethod byte

+ const PadSpread

+ const ReflectSpread

+ const RepeatSpread

+ type Stroker struct

+ CapL CapFunc

+ CapT CapFunc

+ JoinGap GapFunc

+ JoinMode JoinMode

+ func NewStroker(width, height int, scanner Scanner) *Stroker

+ func (r *Stroker) CalcEndCurvature(p0, p1, p2, q0, q1, q2 fixed.Point26_6, dm fixed.Int52_12, calcRadCuve bool)

+ func (r *Stroker) CubeBezier(b, c, d fixed.Point26_6)

+ func (r *Stroker) Joiner(p C2Point)

+ func (r *Stroker) Line(b fixed.Point26_6)

+ func (r *Stroker) LineSeg(sgm Rasterx, b fixed.Point26_6)

+ func (r *Stroker) QuadBezier(b, c fixed.Point26_6)

+ func (r *Stroker) SetStroke(width, miterLimit fixed.Int26_6, capL, capT CapFunc, gp GapFunc, jm JoinMode)

+ func (r *Stroker) Start(a fixed.Point26_6)

+ func (r *Stroker) Stop(isClosed bool)