r2

Documentation

Overview

Package r2 provides 2D vectors and boxes and operations on them.

Index

• type Box
• type Vec
  • func (p Vec) Add(q Vec) Vec
  • func (p Vec) Scale(f float64) Vec
  • func (p Vec) Sub(q Vec) Vec

Types

type Box

type Box struct {
	Min, Max Vec
}

Box is a 2D bounding box.

type Vec

type Vec struct {
	X, Y float64
}

Vec is a 2D vector.

func (Vec) Add

func (p Vec) Add(q Vec) Vec

Add returns the vector sum of p and q.

func (Vec) Scale

func (p Vec) Scale(f float64) Vec

Scale returns the vector p scaled by f.

func (Vec) Sub

func (p Vec) Sub(q Vec) Vec

Sub returns the vector sum of p and -q.