from container/heap

windings counts intersections of ray with path. Paths that cross downwards are negative and upwards are positive. It returns the windings excluding th

And returns the boolean path operation of path p AND q, i.e. the intersection of both. It removes all self-intersections and overlapping areas, orient

Arc returns the arguments for arcs (rx,ry,rot,large,sweep).

Arc returns the arguments for arcs (rx,ry,rot,large,sweep).

Area returns the polygon's signed area.

Area returns the area of the rectangle.

AssetDir returns the file names below a certain directory embedded in the file by go-bindata. For example if you run go-bindata on data/... and data c

AssetInfo loads and returns the asset info for the given name. It returns an error if the asset could not be found or could not be loaded.

BMP returns a BMP writer and accepts the following options: canvas.Resolution, canvas.Colorspace

Cmd returns the current path segment command.

CoordView returns the current affine transformation matrix for coordinates.

Crossings returns the number of crossings with the path from the given point outwards, i.e. the number of times a ray from (x,y) towards (∞,y) interse

DPI (dots-per-inch) for the resolution of rasterization.

DVI2Path parses a DVI file (output from TeX) and returns a path.

Destroy should be called when using HarfBuzz to free the C resources.

Dimensions returns the dimensions for Gio.

Direction returns the direction of the path at the given segment and t in [0.0,1.0] along that path. The direction is a vector of unit length.

EPS returns a Encapsulated PostScript writer and accepts the following options: canvas/renderers/ps.*Options

EllipticalArc returns an elliptical arc with radii rx and ry, with rot the counter clockwise rotation in degrees, and theta0 and theta1 the angles in

Empty returns true if the polyline is empty.

EndTextObject ends a text object.

FastClip removes all segments that are completely outside the given clipping rectangle. To ensure that the removal doesn't cause a segment to cross th

Fill fills the path, but does not stroke.

FillCount returns the number of times the test point is enclosed by the polyline. Counter clockwise enclosures are counted positively and clockwise en

Filling returns whether each subpath gets filled or not. Whether a path is filled depends on the FillRule and whether it negates another path. If a su

FontStroke is a font decoration that draws a stroke around the text.

GIF returns a GIF writer and accepts the following options: canvas.Resolution, canvas.Colorspace, image/gif.*Options

GreedyLinebreak breaks a list of items using a greedy line breaking algorithm. This is much faster than Knuth's algorithm. TODO: instead of width acce

Gridsnap snaps point to a grid with the given spacing.

HasRotation is true if the matrix has a rotation or skewing component.

Heights returns the ascender and descender values of the span object.

InsertBefore inserts break point b before at.

TODO: implement Liang's (soft) hyphenation algorithm? Add \u00AD at opportunities, unless \u2060 or \uFEFF is present IsParagraphSeparator returns tru

JPEG returns a JPEG writer and accepts the following options: canvas.Resolution, canvas.Colorspace, image/jpeg.*Options

LabGradient creates a gradient from (t,L,a,b) values with t∈[0,1] the position, L∈[0,1] the lightness, a∈[-1,1], and b∈[-1,1].

Lines returns the number of text lines of the text box.

LoadFontCollection loads a font from a collection file and uses the font at the specified index.

LoadFontCollection loads a font from a collection file and uses the font at the specified index.

MostCommonFontFace returns the most common FontFace of the text.

MustLoadSystemFont loads a font from the system's fonts and panics on error.

New returns an open graphics library (OpenGL) renderer.

New returns an HTMLCanvas renderer.

New returns a renderer that draws to a rasterized image. The final width and height of the image is the width and height (mm) multiplied by the resolu

NewContain returns a Gio renderer that fills the constraints either horizontally or vertically, whichever is met first.

NewGonumPlot returns a new github.com/gonum/plot/vg renderer.

NewJPEGMaskedImage parses a JPEG image and a separate mask. This allows for a brightness-only JPEG to act as mask.

NewLinearGradient returns a new linear gradient pattern.

NewShaper returns a new text shaper.

NewShaper returns a new text shaper.

NewShaperSFNT returns a new text shaper using a SFNT structure.

OKLabGradient creates a gradient from (t,L,a,b) values with t∈[0,1] the position, L∈[0,1] the lightness, a∈[-1,1], and b∈[-1,1].

PolarPoint returns a point from polar coordinates, with angle in radians CCW and radius the distance from (0,0).

ReflectX adds a horizontal reflection transformation, i.e. Scale(-1,1).

ReflectX inverts the X axis of the view.

ReflectXAbout adds a horizontal reflection transformation about x.

ReflectY inverts the Y axis of the view.

RegularStarPolygon returns a regular star polygon with radius r. It uses n vertices of density d. This will result in a self-intersection star in coun

Remove removes break point b.

RestoreAsset restores an asset under the given directory

Rotate adds a rotation transformation with rot in degree counter clockwise.

Rotate rotates the view counter clockwise with rot in degrees.

SVGZ returns a GZIP compressed SVG writer and accepts the following options: canvas/renderers/svgsvg.*Options

Same returns true if p and q are equal shapes within tolerance Epsilon. Path q may start at an offset into path p or may be in the reverse direction.

ScaleAbout adds a scaling transformation about (x,y) in sx and sy. When scale is negative it will flip those axes.

SetAuthor sets the document's author.

SetCompression enable the compression of the streams.