Module Hugin_vg.Renderable

Renderables.

A renderable is a picture on a page: the rectangle of the plane from (0, 0) to (w, h), in points, 1/72 inch. It gives the picture a physical size, the same in every output: a page 360 points wide is five inches wide as PDF and as SVG, and 360 *. d pixels wide drawn at a density of d pixels per point, which PNG output records so that the file prints five inches wide.

What the picture paints outside the page is not shown, and the page is transparent where the picture paints nothing: a picture brings its own background.

Types

#type t

The type for renderables. Invariant: the width and height are finite and positive.

Constructors and accessors

#val v : float -> float -> Picture.t -> t

v w h p is p on a page w points wide and h points high.

Raises Invalid_argument if w or h is not finite and positive.

#val w : t -> float

w r is the width of the page of r, in points.

#val h : t -> float

h r is the height of the page of r, in points.

#val picture : t -> Picture.t

picture r is the picture of r.

Comparing and formatting

#val equal : t -> t -> bool

equal r r' is true iff r and r' have equal widths and heights and Picture.equal pictures.

#val pp : Stdlib.Format.formatter -> t -> unit

pp ppf r formats the size and the picture of r for debugging.