Safe Haskell	None
Language	GHC2021

Box2D.MathTypes

Contents

Constants

Description

Low-level bindings to the value types in box2d/math_functions.h.

These are the small POD math structs that the Box2D API passes and returns by value. Field order matches the C layout; Storable offsets come straight from the header via hsc2hs. Fields are Float because C float maps to the Haskell FFI Float with an identical representation.

In single-precision builds (the default) b2Pos and b2WorldTransform are typedefs for b2Vec2 and b2Transform, so Pos and WorldTransform are type synonyms here.

Synopsis

Documentation

data Vec2 Source #

A 2D vector.

Constructors

Vec2 Float Float

Instances

Instances details

Storable Vec2 Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: Vec2 -> Int # alignment :: Vec2 -> Int # peekElemOff :: Ptr Vec2 -> Int -> IO Vec2 # pokeElemOff :: Ptr Vec2 -> Int -> Vec2 -> IO () # peekByteOff :: Ptr b -> Int -> IO Vec2 # pokeByteOff :: Ptr b -> Int -> Vec2 -> IO () # peek :: Ptr Vec2 -> IO Vec2 # poke :: Ptr Vec2 -> Vec2 -> IO () #
Show Vec2 Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> Vec2 -> ShowS # show :: Vec2 -> String # showList :: [Vec2] -> ShowS #
Eq Vec2 Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: Vec2 -> Vec2 -> Bool # (/=) :: Vec2 -> Vec2 -> Bool #

data CosSin Source #

Cosine and sine pair (cosine, sine).

Constructors

CosSin Float Float

Instances

Instances details

Storable CosSin Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: CosSin -> Int # alignment :: CosSin -> Int # peekElemOff :: Ptr CosSin -> Int -> IO CosSin # pokeElemOff :: Ptr CosSin -> Int -> CosSin -> IO () # peekByteOff :: Ptr b -> Int -> IO CosSin # pokeByteOff :: Ptr b -> Int -> CosSin -> IO () # peek :: Ptr CosSin -> IO CosSin # poke :: Ptr CosSin -> CosSin -> IO () #
Show CosSin Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> CosSin -> ShowS # show :: CosSin -> String # showList :: [CosSin] -> ShowS #
Eq CosSin Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: CosSin -> CosSin -> Bool # (/=) :: CosSin -> CosSin -> Bool #

data Rot Source #

A 2D rotation stored as a cosine/sine pair (c, s).

Constructors

Rot Float Float

Instances

Instances details

Storable Rot Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: Rot -> Int # alignment :: Rot -> Int # peekElemOff :: Ptr Rot -> Int -> IO Rot # pokeElemOff :: Ptr Rot -> Int -> Rot -> IO () # peekByteOff :: Ptr b -> Int -> IO Rot # pokeByteOff :: Ptr b -> Int -> Rot -> IO () # peek :: Ptr Rot -> IO Rot # poke :: Ptr Rot -> Rot -> IO () #
Show Rot Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> Rot -> ShowS # show :: Rot -> String # showList :: [Rot] -> ShowS #
Eq Rot Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: Rot -> Rot -> Bool # (/=) :: Rot -> Rot -> Bool #

data Transform Source #

A 2D rigid transform: position p and rotation q.

Constructors

Transform Vec2 Rot

Instances

Instances details

Storable Transform Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: Transform -> Int # alignment :: Transform -> Int # peekElemOff :: Ptr Transform -> Int -> IO Transform # pokeElemOff :: Ptr Transform -> Int -> Transform -> IO () # peekByteOff :: Ptr b -> Int -> IO Transform # pokeByteOff :: Ptr b -> Int -> Transform -> IO () # peek :: Ptr Transform -> IO Transform # poke :: Ptr Transform -> Transform -> IO () #
Show Transform Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> Transform -> ShowS # show :: Transform -> String # showList :: [Transform] -> ShowS #
Eq Transform Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: Transform -> Transform -> Bool # (/=) :: Transform -> Transform -> Bool #

data Mat22 Source #

A 2x2 column-major matrix (columns cx, cy).

Constructors

Mat22 Vec2 Vec2

Instances

Instances details

Storable Mat22 Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: Mat22 -> Int # alignment :: Mat22 -> Int # peekElemOff :: Ptr Mat22 -> Int -> IO Mat22 # pokeElemOff :: Ptr Mat22 -> Int -> Mat22 -> IO () # peekByteOff :: Ptr b -> Int -> IO Mat22 # pokeByteOff :: Ptr b -> Int -> Mat22 -> IO () # peek :: Ptr Mat22 -> IO Mat22 # poke :: Ptr Mat22 -> Mat22 -> IO () #
Show Mat22 Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> Mat22 -> ShowS # show :: Mat22 -> String # showList :: [Mat22] -> ShowS #
Eq Mat22 Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: Mat22 -> Mat22 -> Bool # (/=) :: Mat22 -> Mat22 -> Bool #

data AABB Source #

Axis-aligned bounding box (lowerBound, upperBound).

Constructors

AABB Vec2 Vec2

Instances

Instances details

Storable AABB Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: AABB -> Int # alignment :: AABB -> Int # peekElemOff :: Ptr AABB -> Int -> IO AABB # pokeElemOff :: Ptr AABB -> Int -> AABB -> IO () # peekByteOff :: Ptr b -> Int -> IO AABB # pokeByteOff :: Ptr b -> Int -> AABB -> IO () # peek :: Ptr AABB -> IO AABB # poke :: Ptr AABB -> AABB -> IO () #
Show AABB Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> AABB -> ShowS # show :: AABB -> String # showList :: [AABB] -> ShowS #
Eq AABB Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: AABB -> AABB -> Bool # (/=) :: AABB -> AABB -> Bool #

data Plane Source #

A plane: normal and offset where separation = dot(normal, point) - offset.

Constructors

Plane Vec2 Float

Instances

Instances details

Storable Plane Source #
Instance details Defined in Box2D.MathTypes Methods sizeOf :: Plane -> Int # alignment :: Plane -> Int # peekElemOff :: Ptr Plane -> Int -> IO Plane # pokeElemOff :: Ptr Plane -> Int -> Plane -> IO () # peekByteOff :: Ptr b -> Int -> IO Plane # pokeByteOff :: Ptr b -> Int -> Plane -> IO () # peek :: Ptr Plane -> IO Plane # poke :: Ptr Plane -> Plane -> IO () #
Show Plane Source #
Instance details Defined in Box2D.MathTypes Methods showsPrec :: Int -> Plane -> ShowS # show :: Plane -> String # showList :: [Plane] -> ShowS #
Eq Plane Source #
Instance details Defined in Box2D.MathTypes Methods (==) :: Plane -> Plane -> Bool # (/=) :: Plane -> Plane -> Bool #

type Pos = Vec2 Source #

World position. In single-precision builds this is Vec2.

type WorldTransform = Transform Source #

World transform. In single-precision builds this is Transform.

Constants

vec2Zero :: Vec2 Source #

rotIdentity :: Rot Source #

The identity rotation (cosine 1, sine 0).

transformIdentity :: Transform Source #