Содержание

DirectXTK	SimpleMath

A 2D rectangle class modeled after the XNA Game Studio 4 (Microsoft.Xna.Framework.Rectangle) math library

For Universal Windows Platform and Xbox One, similar functionality is provided by the Windows::Foundation::Rect Windows Runtime structure

Header

#include <SimpleMath.h>

Initialization

using namespace DirectX::SimpleMath;

Rectangle r;                    // Creates an empty rectangle [0, 0, 0, 0]
Rectangle r(10, 20, 100, 200);  // Creates a rectangle with upper-left [10,20]
                                // 100 width, and 200 height

For Windows desktop apps, you may find that Rectangle conflicts with the GDI function of the same name. You can resolve this three ways: Use #define NOGDI before you include <Windows.h>; use SimpleMath::Rectangle, or in local scope use using Rectangle = SimpleMath::Rectangle;.

Fields

x location of the upper-left corner
y location of the upper-left corner
width of the rectangle
height of the rectangle

Methods

Comparison operators: == and !=
Assignment operator: =
Location, Center: Returns the rectangle position as a Vector2
IsEmpty: Returns true if the rectangle is [0, 0, 0, 0]
Contains: Tests to see if a point or rectangle is contained by the rectangle
Inflate: Grows the rectangle by a specified amount in the horizontal and vertical dimensions
Intersects: Tests to see if another rectangle intersects with this rectangle
Offset: Moves or offsets the rectangle by moving the upper-left position

Statics

Intersect: Computes the intersection of two rectangles or the empty rectangle [0, 0, 0, 0] if there is no intersection
Union: Computes the union of two rectangles