VipsRect

struct VipsRect {
  int left;
  int top;
  int width;
  int height;
}

A VipsRect is a rectangular area of pixels. This is a struct for performing simple rectangle algebra.

Duplicate a rect to the heap. You need to free the result with g_free().

Is r1 equal to r2?

Does r contain point (x, y)?

Is r2 a subset of r1?

Fill out with the intersection of r1 and r2. out can equal r1 or r2.

Is r empty? ie. zero width or height.

Enlarge r by n. +1 means out one pixel.

Make sure width and height are >0 by moving the origin and flipping the rect.

Do r1 and r2 have a non-empty intersection?

Fill out with the bounding box of r1 and r2. out can equal r1 or r2.

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