ply-loader-0.1.1.1: PLY file loader.

Safe HaskellSafe-Inferred

PLY.Types

Synopsis

Documentation

module Data.Int

module Data.Word

data Format Source

Constructors

ASCII 
Binary_LE 
Binary_BE 

Instances

data Scalar Source

Constructors

Schar !Int8 
Suchar !Word8 
Sshort !Int16 
Sushort !Word16 
Sint !Int 
Suint !Word32 
Sfloat !Float 
Sdouble !Double 

Instances

data ScalarT Source

Constructors

Tchar 
Tuchar 
Tshort 
Tushort 
Tint 
Tuint 
Tfloat 
Tdouble 

Instances

data Property Source

Constructors

ScalarProperty !ScalarT !ByteString 
ListProperty !ScalarT !ByteString 

Instances

data Element Source

Constructors

Element 

Fields

elName :: ByteString
 
elNum :: Int
 
elProps :: [Property]
 

Instances

class Storable a => PLYType a whereSource

Methods

plyType :: a -> ScalarTSource

unsafeUnwrap :: Scalar -> aSource

Instances

class Storable a

The member functions of this class facilitate writing values of primitive types to raw memory (which may have been allocated with the above mentioned routines) and reading values from blocks of raw memory. The class, furthermore, includes support for computing the storage requirements and alignment restrictions of storable types.

Memory addresses are represented as values of type Ptr a, for some a which is an instance of class Storable. The type argument to Ptr helps provide some valuable type safety in FFI code (you can't mix pointers of different types without an explicit cast), while helping the Haskell type system figure out which marshalling method is needed for a given pointer.

All marshalling between Haskell and a foreign language ultimately boils down to translating Haskell data structures into the binary representation of a corresponding data structure of the foreign language and vice versa. To code this marshalling in Haskell, it is necessary to manipulate primitive data types stored in unstructured memory blocks. The class Storable facilitates this manipulation on all types for which it is instantiated, which are the standard basic types of Haskell, the fixed size Int types (Int8, Int16, Int32, Int64), the fixed size Word types (Word8, Word16, Word32, Word64), StablePtr, all types from Foreign.C.Types, as well as Ptr.

Minimal complete definition: sizeOf, alignment, one of peek, peekElemOff and peekByteOff, and one of poke, pokeElemOff and pokeByteOff.

Instances