TRect

type TRect = object

  A: TPoint;

Top left corner of rectangle.

  B: TPoint;

Bottom right corner of rectangle.

  function Empty;

Is the surface of the rectangle zero.

  function Equals();

Do the corners of the rectangles match.

  function Contains();

Determine if a point is inside the rectangle.

  procedure Copy();

Copy cornerpoints from another rectangle.

  procedure Union();

Enlarges rectangle to encompass another rectangle.

  procedure Intersect();

Reduce rectangle to intersection with another rectangle.

  procedure Move();

Move rectangle along a vector.

  procedure Grow();

Expand rectangle with certain size.

  procedure Assign();

Set rectangle corners.

end;

TRect

Describes a rectangular region in a plane.

TObject

Base class of all classes.