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

#include <SimpleMath.h>

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]

• x component of vector
• y component of vector

• 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.

• 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.

• Zero: Zero vector [0, 0]
• One: One vector [1, 1]
• UnitX: Unit X vector [1, 0]
• UnitY: Unit Y vector [0, 1]

These methods are marked noexcept, and do not throw C++ exceptions.

Vector2 can freely convert to and from a XMFLOAT2 and XMVECTOR (the z and w components are lost).

Vector3, Vector4, Matrix