using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace BansheeEngine
{
	/** @addtogroup Particles
	 *  @{
	 */

	/// <summary>Structure used for initializing a ParticleOrbit object.</summary>
	[StructLayout(LayoutKind.Sequential), SerializeObject]
	public partial struct ParticleOrbitOptions
	{
		/// <summary>Initializes the struct with default values.</summary>
		public static ParticleOrbitOptions Default()
		{
			ParticleOrbitOptions value = new ParticleOrbitOptions();
			value.center = null;
			value.velocity = null;
			value.radial = new FloatDistribution(0f);
			value.worldSpace = false;

			return value;
		}

		/// <summary>Position of the center around which to orbit. Evaluated over particle system lifetime.</summary>
		public Vector3Distribution center;
		/// <summary>
		/// Determines the speed of rotation around each axis. The speed is specified in "turns" where 0 = no rotation,  0.5 = 
		/// 180 degree rotation and 1 = 360 degree rotation. Evaluated over particle lifetime.
		/// </summary>
		public Vector3Distribution velocity;
		/// <summary>
		/// Speed at which to push or pull the particles towards/away from the center. Evaluated over particle lifetime.
		/// </summary>
		public FloatDistribution radial;
		/// <summary>True if the properties provided are in world space, false if in local space.</summary>
		public bool worldSpace;
	}

	/** @} */
}