SetCoordSystem sets the Cartesian coordinate system.

SetCreator sets the document's creator.

SetFeatures sets the font features (not yet supported).

SetFillGradient sets the gradient to be used for filling operations. The default fill color is black.

SetFont sets a font for a text field.

SetFont sets the font.

SeFontSubsetting enables the subsetting of embedded fonts.

SetInfo sets the document's title, subject, keywords, author and creator.

SetKeywords sets the document's keywords.

SetSubject sets the document's subject.

SetTextOrientation sets the text orientation of non-CJK between CJK.

SetTitle sets the document's title.

SetVariations sets the font variations (not yet supported).

SetWritingMode sets the writing mode.

ShearAbout adds a shear transformation about (x,y) with sx the horizontal shear and sy the vertical shear.

Slope returns the slope between OP, i.e. y/x.

SquareCell is a square cell with sides of length a used for tiling.

StartTextObject starts a text object.

String returns the string representation of a point, such as "(x,y)".

String returns a string representation of r such as "(xmin,ymin)-(xmax,ymax)".

String returns a string representation of the affine transformation matrix as six values, where [a b c; d e f; g h i] will be written as "a b d e c f"

SubImage returns an image representing the portion of the image p visible through r. The returned value shares pixels with the original image.

TIFF returns a TIFF writer and accepts the following options: canvas.Resolution, canvas.Colorspace, golang.org/x/image/tiff.*Options

TeX returns a TeX writer.

Tile tiles the hatch pattern within the clipping path.

TileRectangle tiles the given cell (determines the axes along which cells are repeated) onto the rectangle dst (bounds of clipping path), where cells

Transform transforms the canvas.

View returns the object's view to be placed within the text line.:

WriteText writes text using a writing mode and a list of strings and inter-character distance modifiers (ints or float64s).

XMonotone replaces all Bézier and arc segments to be x-monotone and returns a new path, that is each path segment is either increasing or decreasing w

func lookupMin(f func(float64) float64, xmin, xmax float64) float64 { const MaxIterations = 1000 min := math.Inf(1) for i := 0; i <= MaxIterations;

func ellipseToCubicBezierError(a, b, n1, n2 float64) float64 { if a < b { a, b = b, a } ba := b / a c0, c1 := 0.0, 0.0 if ba < 0.25 { c0 += (

func ellipseToQuadraticBezierError(a, b, n1, n2 float64) float64 { if a < b { a, b = b, a } ba := b / a c0, c1 := 0.0, 0.0 if ba < 0.25 { c0

return a WriterTo, a refMask and a mimetype

Gauss-Legendre quadrature integration from a to b with n=3, see https://pomax.github.io/bezierinfo/legendre-gauss.html for more values

https://www.geometrictools.com/GTE/Mathematics/IntrLine2Circle2.h

see https://github.com/signavio/svg-intersections see https://github.com/w8r/bezier-intersect see https://cs.nyu.edu/exact/doc/subdiv1.pdf intersect f

negative when curve bends CW while following t