BEPUutilities.Quaternion.CreateFromAxisAngle C# (CSharp) Method

Quaternion Class Documentation Mostrar archivo Open project: tonypeng/Bloxel

CreateFromAxisAngle() public static method

Creates a quaternion from an axis and angle.

public static CreateFromAxisAngle ( BEPUutilities.Vector3 axis, float angle ) : Quaternion
axis	BEPUutilities.Vector3	Axis of rotation.
angle	float	Angle to rotate around the axis.
return	Quaternion

        public static Quaternion CreateFromAxisAngle(Vector3 axis, float angle)
        {
            float halfAngle = angle * .5f;
            float s = (float)Math.Sin(halfAngle);
            Quaternion q;
            q.X = axis.X * s;
            q.Y = axis.Y * s;
            q.Z = axis.Z * s;
            q.W = (float)Math.Cos(halfAngle);
            return q;
        }