From 22d5bf8ff9942707c3e189aa31e1e253dc20603b Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Sat, 24 Nov 2012 20:01:34 -0800 Subject: BulletSim: complete vector motor. Correct line endings. --- OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs | 233 +++++++++++++---------- 1 file changed, 129 insertions(+), 104 deletions(-) (limited to 'OpenSim/Region') diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs b/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs index bc6e4c4..b8bdd87 100755 --- a/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs @@ -1,104 +1,129 @@ -using System; -using System.Collections.Generic; -using System.Text; -using OpenMetaverse; - -namespace OpenSim.Region.Physics.BulletSPlugin -{ -public abstract class BSMotor -{ - public virtual void Reset() { } - public virtual void Zero() { } -} -// Can all the incremental stepping be replaced with motor classes? -public class BSVMotor : BSMotor -{ - public Vector3 FrameOfReference { get; set; } - public Vector3 Offset { get; set; } - - public float TimeScale { get; set; } - public float TargetValueDecayTimeScale { get; set; } - public Vector3 CurrentValueReductionTimescale { get; set; } - public float Efficiency { get; set; } - - public Vector3 TargetValue { get; private set; } - public Vector3 CurrentValue { get; private set; } - - - - BSVMotor(float timeScale, float decayTimeScale, Vector3 frictionTimeScale, float efficiency) - { - TimeScale = timeScale; - TargetValueDecayTimeScale = decayTimeScale; - CurrentValueReductionTimescale = frictionTimeScale; - Efficiency = efficiency; - } - public void SetCurrent(Vector3 current) - { - CurrentValue = current; - } - public void SetTarget(Vector3 target) - { - TargetValue = target; - } - public Vector3 Step(float timeStep) - { - if (CurrentValue.LengthSquared() > 0.001f) - { - // Vector3 origDir = Target; // DEBUG - // Vector3 origVel = CurrentValue; // DEBUG - - // Add (desiredVelocity - currentAppliedVelocity) / howLongItShouldTakeToComplete - Vector3 addAmount = (TargetValue - CurrentValue)/(TargetValue) * timeStep; - CurrentValue += addAmount; - - float decayFactor = (1.0f / TargetValueDecayTimeScale) * timeStep; - TargetValue *= (1f - decayFactor); - - Vector3 frictionFactor = (Vector3.One / CurrentValueReductionTimescale) * timeStep; - CurrentValue *= (Vector3.One - frictionFactor); - } - else - { - // if what remains of direction is very small, zero it. - TargetValue = Vector3.Zero; - CurrentValue = Vector3.Zero; - - // VDetailLog("{0},MoveLinear,zeroed", Prim.LocalID); - } - return CurrentValue; - } -} - -public class BSFMotor : BSMotor -{ - public float TimeScale { get; set; } - public float DecayTimeScale { get; set; } - public float Friction { get; set; } - public float Efficiency { get; set; } - - public float Target { get; private set; } - public float CurrentValue { get; private set; } - - BSFMotor(float timeScale, float decayTimescale, float friction, float efficiency) - { - } - public void SetCurrent(float target) - { - } - public void SetTarget(float target) - { - } - public float Step(float timeStep) - { - return 0f; - } -} -public class BSPIDMotor : BSMotor -{ - // TODO: write and use this one - BSPIDMotor() - { - } -} -} +using System; +using System.Collections.Generic; +using System.Text; +using OpenMetaverse; + +namespace OpenSim.Region.Physics.BulletSPlugin +{ +public abstract class BSMotor +{ + public BSMotor() + { + PhysicsScene = null; + } + public virtual void Reset() { } + public virtual void Zero() { } + + // Used only for outputting debug information. Might not be set so check for null. + public BSScene PhysicsScene { get; set; } + protected void MDetailLog(string msg, params Object[] parms) + { + if (PhysicsScene != null) + { + if (PhysicsScene.VehicleLoggingEnabled) + { + PhysicsScene.DetailLog(msg, parms); + } + } + } +} +// Can all the incremental stepping be replaced with motor classes? +public class BSVMotor : BSMotor +{ + public Vector3 FrameOfReference { get; set; } + public Vector3 Offset { get; set; } + + public float TimeScale { get; set; } + public float TargetValueDecayTimeScale { get; set; } + public Vector3 CurrentValueReductionTimescale { get; set; } + public float Efficiency { get; set; } + + public Vector3 TargetValue { get; private set; } + public Vector3 CurrentValue { get; private set; } + + BSVMotor(float timeScale, float decayTimeScale, Vector3 frictionTimeScale, float efficiency) : base() + { + TimeScale = timeScale; + TargetValueDecayTimeScale = decayTimeScale; + CurrentValueReductionTimescale = frictionTimeScale; + Efficiency = efficiency; + CurrentValue = TargetValue = Vector3.Zero; + } + public void SetCurrent(Vector3 current) + { + CurrentValue = current; + } + public void SetTarget(Vector3 target) + { + TargetValue = target; + } + public Vector3 Step(float timeStep) + { + Vector3 returnCurrent = Vector3.Zero; + if (CurrentValue.LengthSquared() > 0.001f) + { + // Vector3 origDir = Target; // DEBUG + // Vector3 origVel = CurrentValue; // DEBUG + + // Add (desiredVector - currentAppliedVector) / howLongItShouldTakeToComplete + Vector3 addAmount = (TargetValue - CurrentValue)/TimeScale * timeStep; + CurrentValue += addAmount; + returnCurrent = CurrentValue; + + // The desired value reduces to zero when also reduces the difference with current. + float decayFactor = (1.0f / TargetValueDecayTimeScale) * timeStep; + TargetValue *= (1f - decayFactor); + + Vector3 frictionFactor = (Vector3.One / CurrentValueReductionTimescale) * timeStep; + CurrentValue *= (Vector3.One - frictionFactor); + + MDetailLog("{0},BSVMotor.Step,nonZero,curr={1},target={2},add={3},decay={4},frict={5},ret={6}", + BSScene.DetailLogZero, TargetValue, CurrentValue, + addAmount, decayFactor, frictionFactor, returnCurrent); + } + else + { + // Difference between what we have and target is small. Motor is done. + CurrentValue = Vector3.Zero; + TargetValue = Vector3.Zero; + + MDetailLog("{0},BSVMotor.Step,zero,curr={1},target={2},ret={3}", + BSScene.DetailLogZero, TargetValue, CurrentValue, returnCurrent); + + } + return returnCurrent; + } +} + +public class BSFMotor : BSMotor +{ + public float TimeScale { get; set; } + public float DecayTimeScale { get; set; } + public float Friction { get; set; } + public float Efficiency { get; set; } + + public float Target { get; private set; } + public float CurrentValue { get; private set; } + + BSFMotor(float timeScale, float decayTimescale, float friction, float efficiency) : base() + { + } + public void SetCurrent(float target) + { + } + public void SetTarget(float target) + { + } + public float Step(float timeStep) + { + return 0f; + } +} +public class BSPIDMotor : BSMotor +{ + // TODO: write and use this one + BSPIDMotor() : base() + { + } +} +} -- cgit v1.1