Add adds a new color stop to a gradient.

AddPathEndpoints adds all line segments of p to the queue q. The first command is converted to a MoveToCmd and any CloseCmd that is not at the end is

AddPoint returns a rect that encompasses both the current rect and the given point.

CP1 returns the first control point for quadratic and cubic Béziers.

CP1 returns the first control point for quadratic and cubic Béziers.

CP2 returns the second control point for cubic Béziers.

Clip sets the canvas to the given rectangle.

Close finished and closes the PDF.

Closed returns true if the last point coincides with the first.

Cmd returns the current path segment command.

FauxWeight returns the path offset for fake boldness relative to regular style. The offset is multiplied by the font size (in millimeters) for an offs

Has return true if it contains break point b.

Interior is true when the point (x,y) is in the interior of the path, i.e. gets filled. This depends on the FillRule.

MoveTo moves the cursor to a given point.

Mul multiplies the current matrix by the given matrix, i.e. combining transformations.

MustAsset is like Asset but panics when Asset would return an error. It simplifies safe initialization of global variables.

NewGoChart returns a new github.com/wcharczuk/go-chart renderer.

NewLineHatch returns a new line hatch pattern with lines at an angle with a spacing of distance. Thickness is the stroke thickness applied to the shap

Opaque scans the entire image and reports whether it is fully opaque.

PixOffset returns the index of the first element of Pix that corresponds to the pixel at (x, y).

PixOffset returns the index of the first element of Pix that corresponds to the pixel at (x, y).

Push saves the current draw state so that it can be popped later on.

Push adds break point b to the end of the list.

ReflectXAbout inverts the X axis of the view about the given X coordinate.

ReflectYAbout inverts the Y axis of the view about the given Y coordinate.

ResetView resets the current affine transformation matrix to the Identity matrix, ie. no transformations.

Scanner returns a path scanner.

SetAlpha sets the transparency value.

SetLineCap sets the stroke cap type.

SetLineJoin sets the stroke join type.

SetLineWidth sets the stroke width.

Shape shapes the string for a given direction, script, and language.

ToleranceEdgeY returns the y-value of the SweepPoint at the tolerance edges given by xLeft and xRight, or at the endpoints of the SweepPoint, whicheve

View returns the current affine transformation matrix through which all operations will be transformed.

WriteCanvas writes an inline canvas object.

negative when curve bends CW while following t

cubicBezierLength calculates the length of the Bézier, taking care of inflection points. It uses Gauss-Legendre (n=5) and has an error of ~1% or less

scale ellipse if rx and ry are too small, see https://www.w3.org/TR/SVG/implnote.html#ArcCorrectionOutOfRangeRadii

fromArcFlags converts the largeArc and sweep boolean flags to a value stored in the path.

https://www.particleincell.com/2013/cubic-line-intersection/

https://www.particleincell.com/2013/cubic-line-intersection/

replace replaces path segments by their respective functions, each returning the path that will replace the segment or nil if no replacement is to be

see https://www.geometrictools.com/Documentation/LowDegreePolynomialRoots.pdf see https://github.com/thelonious/kld-polynomial/blob/development/lib/Po

BeveledRectangle returns a rectangle of width w and height h with beveled corners at distance r from the corner.

CCW returns true when the path is counter clockwise oriented at its right-most coordinate (bottom-most of all right-most coordinates). It is most usef

ComposeView post-multiplies the current affine transformation matrix by the given matrix. This means that any draw action will first be transformed by

Covers returns true if at least one point of the second shape lies in the first, and no points of the second lie in the exterior of the first, includi

Decompose extracts the translation, rotation, scaling and rotation components (applied in the reverse order) as (tx, ty, theta, sx, sy, phi) with rota

Disjoint is the inverse of Intersects.

DrawImage draws an image at position (x,y) using the current draw state and the given resolution in pixels-per-millimeter. A higher resolution will dr

Ellipse returns an ellipse of radii rx and ry.

EmbeddingLevels returns the embedding levels for each rune of a mixed LTR/RTL string. A change in level means a change in direction.

Equals returns true if P and Q are equal with tolerance Epsilon.

FindSystemFont finds the path to a font from the system's fonts.

FromImage returns a renderer that draws to an existing image. Resolution is in pixels per unit of canvas coordinates (millimeters). A higher resolutio

GlyphsToItems converts a slice of glyphs into the box/glue/penalty items model as used by Knuth's line breaking algorithm. The SFNT and Size of each g

Height returns the height of the canvas in millimeters.

Into returns true if first path goes into the left-hand side of the second path, i.e. the second path goes to the right-hand side of the first path.

Length returns the length of OP.

func (s *SweepStatus) Clear() { n := s.First() for n != nil { cur := n n = n.Next() s.returnNode(cur) } s.root = nil }