Содержание

DirectXTK	SimpleMath

Two component vector class modeled after the XNA Game Studio 4 (Microsoft.Xna.Framework.Vector2) math library.

Header

#include <SimpleMath.h>

Initialization

using namespace DirectX::SimpleMath;

Vector2 v;        // Creates a vector [0, 0]
Vector2 v(10);    // Creates a vector [10, 10]
Vector2 v(1, 2);  // Creates a vector [1, 2]

float arr[2] = { 1, 2 };
Vector2 v(arr);   // Creates a vector [1, 2]

Fields

x component of vector
y component of vector

Methods

Comparison operators: == and !=
Assignment operators: =, +=, -=, *=, /=
Unary operators: +, -
Binary operators: +, -, *, /
InBounds: Tests if the vector is within the bounds set by the positive and negative of the input bounds.
Length, LengthSquared: Compute vector length.
Dot: Returns the dot-product between two 2-vectors.
Cross: Computes the geometric cross-product of two 2-vectors. See XMVector2Cross.
Normalize: Computes a unit-length vector.
Clamp: Clamps the values of the vector per component between a minimum and a maximum.

Statics

Distance, DistanceSquared: Compute distance between two vectors.
Min, Max: Determine minimum/maximum vector elements.
Lerp: Performs a linear interpolation.
SmoothStep: Performs a cube interpolation.
Barycentric: Returns a point in Barycentric coordinates.
CatmullRom: Performs a Catmull-Rom interpolation.
Hermite: Performs a Hermite spline interpolation.
Reflect: Reflects an incident vector across a normal vector.
Refract: Refracts an incident vector across a normal vector.
Transform: Transform the vector by the rotation and scale in the matrix or a quaternion. There is also an overload for transforming an array of vectors. See XMVector2Transform.
TransformNormal: Transforms the vector by the rotation and scale in the matrix, ignoring translation (rows 2 & 3). There is also an overload for transforming an array of vectors. See XMVector2TransformNormal.