path

Documentation

Overview

Package path provides internal path processing utilities.

Index

• Constants
• type Close
• type CubicTo
• type LineTo
• type MoveTo
• type PathElement
• type Point
  • func Flatten(elements []PathElement) []Point
  • func (p Point) Add(q Point) Point
  • func (p Point) Distance(q Point) float64
  • func (p Point) Dot(q Point) float64
  • func (p Point) Length() float64
  • func (p Point) Lerp(q Point, t float64) Point
  • func (p Point) Mul(s float64) Point
  • func (p Point) Sub(q Point) Point
• type QuadTo

Constants

const Tolerance = 0.1

Tolerance is the maximum distance from the curve for flattening.

Types

type Close

type Close struct{}

Close closes the path.

type CubicTo

type CubicTo struct{ Control1, Control2, Point Point }

CubicTo draws a cubic curve.

type LineTo

type LineTo struct{ Point Point }

LineTo draws a line.

type MoveTo

type MoveTo struct{ Point Point }

MoveTo moves to a point.

type PathElement

type PathElement interface {
	// contains filtered or unexported methods
}

PathElement represents an element in a path.

type Point

type Point struct {
	X, Y float64
}

Point represents a 2D point (internal copy to avoid import cycle).

func Flatten

func Flatten(elements []PathElement) []Point

Flatten converts a path with curves into a path with only straight lines.

func (Point) Add

func (p Point) Add(q Point) Point

func (Point) Distance

func (p Point) Distance(q Point) float64

func (Point) Dot

func (p Point) Dot(q Point) float64

func (Point) Length

func (p Point) Length() float64

func (Point) Lerp

func (p Point) Lerp(q Point, t float64) Point

Helper methods for Point

func (Point) Mul

func (p Point) Mul(s float64) Point

func (Point) Sub

func (p Point) Sub(q Point) Point

type QuadTo

type QuadTo struct{ Control, Point Point }

QuadTo draws a quadratic curve.