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The Rgb24 module

type elt = Color.rgb
type t = { 
    width: int; 
    height: int; 
    mutable infos: Info.info list; 
    data: Bitmap.t

creation functions

val create_with : int -> int -> string -> t

create_with width height infos data creates a rgb24 image of a size width x height and a string representation of the bitmap data

val create : int -> int -> t

creates a non-initialized image without informations

val make : int -> int -> elt -> t

creates an image without informations filled with elt


val get : t -> int -> int -> elt

val set : t -> int -> int -> elt -> unit

get image x y and set image x y v reads/writes the pixel information at (x,y) of image. If (x,y) is out of the image, they raise Out_of_image exception.

val unsafe_get : t -> int -> int -> elt

val unsafe_set : t -> int -> int -> elt -> unit

unsafe_get and unsafe_set are the same functions as get and set, but they lack the image region checks. So it is fast. But you have to use them with being sure that the specified point is in the image. Otherwise the result is unknown, and sometimes a runtime error occurs.

val destroy : t -> unit

You need to call destroy t to free the swap files maybe created for t

val sub : t -> int -> int -> int -> int -> t

sub dst x y width height returns sub-bitmap of dst, at (x,y)-(x+width-1,y+height-1).

val blit : t -> int -> int -> t -> int -> int -> int -> int -> unit

blit src sx sy dst dx dy width height copies the rectangle region of src at (sx,sy)-(sx+width-1,sy+height-1) to dst, at (dx,dy)-(dx+width-1,dy+height-1)

Tool functions

val resize : (float -> unit) option -> t -> int -> int -> t

resize src new_width new_height resizes an original image src and creates a new image with the size new_widthxnew_height.

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