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#region Header
// SceneObjectGroupDiff.cs
// User: bongiojp
#endregion Header
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using libsecondlife;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Region.Environment.Interfaces;
using OpenSim.Region.Environment.Scenes;
using OpenSim.Region.Physics.Manager;
using log4net;
using Axiom.Math;
namespace OpenSim.Region.Environment.Modules.ContentManagement
{
#region Enumerations
[Flags]
public enum Diff
{
NONE = 0,
FACECOLOR = 1,
SHAPE = 1<<1,
MATERIAL = 1<<2,
TEXTURE = 1<<3,
SCALE = 1<<4,
POSITION = 1<<5,
OFFSETPOSITION = 1<<6,
ROTATIONOFFSET = 1<<7,
ROTATIONALVELOCITY = 1<<8,
ACCELERATION = 1<<9,
ANGULARVELOCITY = 1<<10,
VELOCITY = 1<<11,
OBJECTOWNER = 1<<12,
PERMISSIONS = 1<<13,
DESCRIPTION = 1<<14,
NAME = 1<<15,
SCRIPT = 1<<16,
CLICKACTION = 1<<17,
PARTICLESYSTEM = 1<<18,
GLOW = 1<<19,
SALEPRICE = 1<<20,
SITNAME = 1<<21,
SITTARGETORIENTATION = 1<<22,
SITTARGETPOSITION = 1<<23,
TEXT = 1<<24,
TOUCHNAME = 1<<25
}
#endregion Enumerations
public static class Difference
{
#region Static Fields
static float TimeToDiff = 0;
private static readonly ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
#endregion Static Fields
#region Private Methods
private static bool AreQuaternionsEquivalent(LLQuaternion first, LLQuaternion second)
{
LLVector3 firstVector = llRot2Euler(first);
LLVector3 secondVector = llRot2Euler(second);
return AreVectorsEquivalent(firstVector, secondVector);
}
private static bool AreVectorsEquivalent(LLVector3 first, LLVector3 second)
{
if(TruncateSignificant(first.X, 2) == TruncateSignificant(second.X, 2)
&& TruncateSignificant(first.Y, 2) == TruncateSignificant(second.Y, 2)
&& TruncateSignificant(first.Z, 2) == TruncateSignificant(second.Z, 2)
)
return true;
else
return false;
}
// Taken from Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
private static double NormalizeAngle(double angle)
{
angle = angle % (Math.PI * 2);
if (angle < 0) angle = angle + Math.PI * 2;
return angle;
}
private static int TruncateSignificant(float num, int digits)
{
return (int) Math.Ceiling((Math.Truncate(num * 10 * digits)/10*digits));
// return (int) ((num * (10*digits))/10*digits);
}
// Taken from Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
// Also changed the original function from LSL_Types to LL types
private static LLVector3 llRot2Euler(LLQuaternion r)
{
LLQuaternion t = new LLQuaternion(r.X * r.X, r.Y * r.Y, r.Z * r.Z, r.W * r.W);
double m = (t.X + t.Y + t.Z + t.W);
if (m == 0) return new LLVector3();
double n = 2 * (r.Y * r.W + r.X * r.Z);
double p = m * m - n * n;
if (p > 0)
return new LLVector3((float)NormalizeAngle(Math.Atan2(2.0 * (r.X * r.W - r.Y * r.Z), (-t.X - t.Y + t.Z + t.W))),
(float)NormalizeAngle(Math.Atan2(n, Math.Sqrt(p))),
(float)NormalizeAngle(Math.Atan2(2.0 * (r.Z * r.W - r.X * r.Y), (t.X - t.Y - t.Z + t.W))));
else if (n > 0)
return new LLVector3(0.0f, (float)(Math.PI / 2), (float)NormalizeAngle(Math.Atan2((r.Z * r.W + r.X * r.Y), 0.5 - t.X - t.Z)));
else
return new LLVector3(0.0f, (float)(-Math.PI / 2), (float)NormalizeAngle(Math.Atan2((r.Z * r.W + r.X * r.Y), 0.5 - t.X - t.Z)));
}
#endregion Private Methods
#region Public Methods
/// <summary>
/// Compares the attributes (Vectors, Quaternions, Strings, etc.) between two scene object parts
/// and returns a Diff bitmask which details what the differences are.
/// </summary>
public static Diff FindDifferences(SceneObjectPart first, SceneObjectPart second)
{
Stopwatch x = new Stopwatch();
x.Start();
Diff result = 0;
// VECTOR COMPARISONS
if(! AreVectorsEquivalent(first.Acceleration, second.Acceleration))
result |= Diff.ACCELERATION;
if(! AreVectorsEquivalent(first.AbsolutePosition, second.AbsolutePosition))
result |= Diff.POSITION;
if(! AreVectorsEquivalent(first.AngularVelocity, second.AngularVelocity))
result |= Diff.ANGULARVELOCITY;
if(! AreVectorsEquivalent(first.OffsetPosition, second.OffsetPosition))
result |= Diff.OFFSETPOSITION;
if(! AreVectorsEquivalent(first.RotationalVelocity, second.RotationalVelocity))
result |= Diff.ROTATIONALVELOCITY;
if(! AreVectorsEquivalent(first.Scale, second.Scale))
result |= Diff.SCALE;
if(! AreVectorsEquivalent(first.Velocity, second.Velocity))
result |= Diff.VELOCITY;
// QUATERNION COMPARISONS
if(! AreQuaternionsEquivalent(first.RotationOffset, second.RotationOffset))
result |= Diff.ROTATIONOFFSET;
// MISC COMPARISONS (LLUUID, Byte)
if(first.ClickAction != second.ClickAction)
result |= Diff.CLICKACTION;
if(first.ObjectOwner != second.ObjectOwner)
result |= Diff.OBJECTOWNER;
// STRING COMPARISONS
if(first.Description != second.Description)
result |= Diff.DESCRIPTION;
if(first.Material != second.Material)
result |= Diff.MATERIAL;
if(first.Name != second.Name)
result |= Diff.NAME;
if(first.SitName != second.SitName)
result |= Diff.SITNAME;
if(first.Text != second.Text)
result |= Diff.TEXT;
if(first.TouchName != second.TouchName)
result |= Diff.TOUCHNAME;
x.Stop();
TimeToDiff += x.ElapsedMilliseconds;
//m_log.Info("[DIFFERENCES] Time spent diffing objects so far" + TimeToDiff);
return result;
}
#endregion Public Methods
}
}
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