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{-***********************************************************************
MODULE PTYPES
This module contains the definitions for all the basic datatypes used to
create functional movies.
The basis of all the images is the Poly, which is a tuple of a color
and a list of points. This is displayed as a polygon of that color. The
form is a line drawn to each of the points, in order.
A list of these Poly's is a Pic, or picture. Each picture is a single
frame of the movie. A list of Pic's makes up a Movie, which is a series
of Pic's displayed in order.
Behaviours affect the movies, such as moving them left, or right.
PictoPic's affect a single picture.
The other functions simply convert regular values such as integers
and floats to the datatypes used by the functional programming.
************************************************************************-}
module R_Ptypes (Vec(..), Color(..), Pic(..), Poly(..), Movie(..), Behaviour(..), PictoPic(..), Process(..),
Vecfloat(..),
Msg(..), Chan(..),
Val (..),
ntov, vtov, nstov, vstov, pstov, bstov
) where
--These are the basic data types for storing and manipulating the movies.
type Vec = (Int,Int)
type Color = Int
type Pic = [Poly]
type Poly = (Color,[Vec])
type Movie = [Pic]
type Behaviour = [Pic -> Pic]
type PictoPic = Pic -> Pic
type Process = [Msg] -> [Msg]
type Msg = [(Chan,Val)]
type Chan = [Char]
data Val = N Int | V (Int,Int) | P Pic | B PictoPic
type Vecfloat = (Float,Float)
--Those convert from the various regular values to Val's.
ntov n = N n
vtov:: Vec -> Val
vtov v = V v
ptov:: Pic -> Val
ptov p = P p
nstov ns = [N n|n<-ns]
vstov:: [Vec] -> [Val]
vstov vs = [V v|v<-vs]
pstov:: [Pic] -> [Val]
pstov ps = [P p|p<-ps]
bstov:: [PictoPic] -> [Val]
bstov bs = [B b|b<-bs]
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