// AuraMetaEntity.cs created with MonoDevelop
// User: bongiojp at 3:03 PM 8/6/2008
//
// To change standard headers go to Edit->Preferences->Coding->Standard Headers
//

using System;
using System.Collections.Generic;
using System.Drawing;
using libsecondlife;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Scenes;
using log4net;
using OpenSim.Region.Physics.Manager;
using Axiom.Math;

namespace OpenSim.Region.Environment.Modules.ContentManagement
{
	
	
	public class AuraMetaEntity : PointMetaEntity
	{
		//transparency of root part, NOT particle system. Should probably add support for changing particle system transparency.
		public AuraMetaEntity(Scene scene, uint LocalId, LLVector3 groupPos, float transparency, LLVector3 color, LLVector3 scale) : base(scene, LocalId, groupPos, transparency)
		{
			SetAura(color, scale);
		}
		
		public AuraMetaEntity(Scene scene, LLUUID uuid, uint LocalId, LLVector3 groupPos, float transparency, LLVector3 color, LLVector3 scale) : base(scene, uuid, LocalId, groupPos, transparency)
		{
			SetAura(color, scale);
		}
		
		private float Average(LLVector3 values)
		{
			return (values.X + values.Y + values.Z)/3f;
		}	
		
		public void SetAura(LLVector3 color, LLVector3 scale)
		{
			SetAura(color, Average(scale) * 2.0f);
		}

		public void SetAura(LLVector3 color, float radius)
		{		
			SceneObjectPart From = m_Entity.RootPart;
				
			//m_log.Debug("[META ENTITY] BEFORE: radius = " + radius);
			float burstRadius = 0.1f;
			Primitive.ParticleSystem.SourcePattern patternFlags = Primitive.ParticleSystem.SourcePattern.None;
			float age = 1.5f;
			float burstRate = 0.4f;
			if (radius >= 8.0f)
			{
				//float sizeOfObject = radius / 2.0f;
				burstRadius = (radius - 8.0f)/3f;
				burstRate = 1.5f;
				radius = 7.99f;
				patternFlags = Primitive.ParticleSystem.SourcePattern.Explode;
				age = 4.0f;
			}
			SetAura(From, color, radius, burstRadius, age, burstRate, patternFlags);
		}
		public void SetAura(SceneObjectPart From, LLVector3 color, float radius, float burstRadius, float age, float burstRate, libsecondlife.Primitive.ParticleSystem.SourcePattern patternFlags)
		{
			Primitive.ParticleSystem prules = new Primitive.ParticleSystem();
			//prules.PartDataFlags = Primitive.ParticleSystem.ParticleDataFlags.Emissive |                                                                                                                    
			//      Primitive.ParticleSystem.ParticleDataFlags.FollowSrc;   //PSYS_PART_FLAGS   
			//prules.PartDataFlags = Primitive.ParticleSystem.ParticleDataFlags.Beam | 
			//	Primitive.ParticleSystem.ParticleDataFlags.TargetPos;
			prules.PartStartColor.R = color.X;                                               //PSYS_PART_START_COLOR                                                                                          
			prules.PartStartColor.G = color.Y;
			prules.PartStartColor.B = color.Z;
			prules.PartStartColor.A = 0.5f;                                               //PSYS_PART_START_ALPHA, transparency                                                                               
			prules.PartEndColor.R = color.X;                                                 //PSYS_PART_END_COLOR                                                                                            
			prules.PartEndColor.G = color.Y;
			prules.PartEndColor.B = color.Z;
			prules.PartEndColor.A = 0.5f;                                                 //PSYS_PART_END_ALPHA, transparency                                                                                 
			/*prules.PartStartScaleX = 0.5f;                                                //PSYS_PART_START_SCALE                                                                                             
			prules.PartStartScaleY = 0.5f;
			prules.PartEndScaleX = 0.5f;                                                  //PSYS_PART_END_SCALE                                                                                               
			prules.PartEndScaleY = 0.5f;
			*/
			prules.PartStartScaleX = radius;                                                //PSYS_PART_START_SCALE                                                                                             
			prules.PartStartScaleY = radius;
			prules.PartEndScaleX = radius;                                                  //PSYS_PART_END_SCALE                                                                                               
			prules.PartEndScaleY = radius;
			prules.PartMaxAge = age;                                                     //PSYS_PART_MAX_AGE                                                                                                 
			prules.PartAcceleration.X = 0.0f;                                             //PSYS_SRC_ACCEL                                                                                                                
			prules.PartAcceleration.Y = 0.0f;
			prules.PartAcceleration.Z = 0.0f;
			prules.Pattern = patternFlags;                 //PSYS_SRC_PATTERN                                                                                                           
			//prules.Texture = LLUUID.Zero;//= LLUUID                                                     //PSYS_SRC_TEXTURE, default used if blank                                                           
			prules.BurstRate = burstRate;                                                      //PSYS_SRC_BURST_RATE                                              
			prules.BurstPartCount = 2;                                                   //PSYS_SRC_BURST_PART_COUNT                                                                                                      
			//prules.BurstRadius = radius;                                                    //PSYS_SRC_BURST_RADIUS  
			prules.BurstRadius = burstRadius;                                                    //PSYS_SRC_BURST_RADIUS     
			prules.BurstSpeedMin = 0.001f;                                                  //PSYS_SRC_BURST_SPEED_MIN                                                                                                      
            prules.BurstSpeedMax = 0.001f;                                                  //PSYS_SRC_BURST_SPEED_MAX                                                                                                       
			prules.MaxAge = 0.0f;                                                         //PSYS_SRC_MAX_AGE                                                                                                              
			//prules.Target = To;                                                 //PSYS_SRC_TARGET_KEY                                                                                                                     
			prules.AngularVelocity.X = 0.0f;                                              //PSYS_SRC_OMEGA                                                                                                                
			prules.AngularVelocity.Y = 0.0f;
			prules.AngularVelocity.Z = 0.0f;
			prules.InnerAngle = 0.0f;                                                     //PSYS_SRC_ANGLE_BEGIN                                                                                              
			prules.OuterAngle = 0.0f;                                                     //PSYS_SRC_ANGLE_END                                                                                                            
			
			prules.CRC = 1;  //activates the particle system??                                                                                                                                                
			From.AddNewParticleSystem(prules);			
		}
	}
}