GEEKING

App/solver/SolverConfig.cpp

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+#include "stdafx.h"
+#include "solver/SolverConfig.h"
+
+FASTINTVARIABLE(PGSPenetrationMarginMax, 50000) //0.05f
+FASTINTVARIABLE(PGSPenetrationMarginMin, 100) //0.0001f
+FASTINTVARIABLE(PGSPenetrationMarginMaxBump, 5) //5%
+FASTINTVARIABLE(PGSPenetrationResolutionDamping, 7) //0.7
+FASTINTVARIABLE(PGSPenetrationVelocityForMinMargin, 20) // 20.0f
+FASTINTVARIABLE(PGSAlign2AxesCorrectionDamping, 10) //1.0
+FASTINTVARIABLE(PGSBallInSocketCorrectionDamping, 10) //1.0
+
+
+namespace RBX
+{
+
+SolverConfig::SolverConfig( Type type )
+{
+    // Kernel
+    pgsIterations = 20;
+
+    // Collisions
+    collisionRestitutionThreshold = 1.0f;
+    collisionPenetrationMargin = 0.05f;
+    collisionPenetrationMarginMax = float(FInt::PGSPenetrationMarginMax)/1000000.0f;
+    collisionPenetrationMarginMin = float(FInt::PGSPenetrationMarginMin)/1000000.0f;
+    collisionPenetrationVelocityForMinMargin = float(FInt::PGSPenetrationVelocityForMinMargin);
+    collisionPenetrationMarginMaxBumpProportions = float(FInt::PGSPenetrationMarginMaxBump)/100.0f;
+    collisionPenetrationResolutionDamping = float(FInt::PGSPenetrationResolutionDamping)/10.0f;
+
+    collisionFrictionStaticToDynamicThreshold = 1.0f;
+    collisionFrictionStaticScale = 1.0f;
+    collisionFrictionDynamicScale = 1.0f;
+
+    // Align2Axes
+    align2AxesFrictionConstant = 0.02f;
+    align2AxesPositionStageFrictionConstant = 0.01f;
+    align2AxesMaxCorrectiveAngle = 3.0f;
+    align2AxesCorrectionDamping = float(FInt::PGSAlign2AxesCorrectionDamping)/10.0f;
+
+    // BallInSocket
+    ballInSocketMaxCorrectionByStabilization = 0.3f;
+    ballInSocketCorrectionDamping = float(FInt::PGSBallInSocketCorrectionDamping)/10.0f;
+
+    // SOR modulation - constraints
+    sorConstraintsModulation.thresholdMax = 1.0f;
+    sorConstraintsModulation.thresholdMin = 0.01f;
+    sorConstraintsModulation.aggressiveValue = 1.5f;
+    sorConstraintsModulation.conservativeValue = 0.75f;
+    sorConstraintsModulation.easingUpToAggressive = 0.0001f;
+    sorConstraintsModulation.easingDownToConservative = 0.2f;
+
+    // SOR modulation - Collisions
+    sorCollisionsModulation.thresholdMax = 0.05f;
+    sorCollisionsModulation.thresholdMin = 0.01f;
+    sorCollisionsModulation.aggressiveValue = 1.9f;
+    sorCollisionsModulation.conservativeValue = 1.0f;
+    sorCollisionsModulation.easingUpToAggressive = 0.0001f;
+    sorCollisionsModulation.easingDownToConservative = 0.2f;
+
+    // Stabilization mass properties
+    stabilizationMassReductionPower = 0.3f;
+    stabilizationInertiaScale = 0.05f;
+
+    // Impulse cache damping
+    cacheVStageModulation.thresholdMin = 0.5f;
+    cacheVStageModulation.thresholdMax = 2.0f;
+    cacheVStageModulation.conservativeValue = 0.93f;
+    cacheVStageModulation.aggressiveValue= 0.99f;
+    cacheVStageModulation.easingDownToConservative = 0.01f;
+    cacheVStageModulation.easingUpToAggressive = 0.0002f;
+
+    cachePStageModulation.thresholdMin = 0.5f;
+    cachePStageModulation.thresholdMax = 1.5f;
+    cachePStageModulation.conservativeValue = 0.70f;
+    cachePStageModulation.aggressiveValue = 0.99f;
+    cachePStageModulation.easingDownToConservative = 0.01f;
+    cachePStageModulation.easingUpToAggressive = 0.0002f;
+
+	// Enable/disable caching
+    velCacheDamping = 1.0f;
+    posCacheDamping = 1.0f;
+    constraintCachingEnabled = true;
+
+    // Integration
+
+    // Old damping was 0.99621 per step. Using d = -ln( 0.99621 ) / dt, where dt = 1/240, we get:
+    angularDamping = 0.911328f;
+    updateSimBodies = true;
+    integrateOnlyPositions = false;
+
+    // Block PGS
+    blockPGSEnabled = true;
+
+    // Virtual masses
+    virtualMassesEnabled = true;
+
+    // SOR
+    velocityStageSOREnabled = true;
+    positionStageSOREnabled = true;
+
+    // Sim islands
+    useSimIslands = false;
+
+    // Inconsistency detector
+    inconsistentConstraintDetectorEnabled = false;
+    inconsistentConstraintMaxIterations = 0;
+    inconsistentConstraintBallInSocketResidualThreshold = 0.02f;
+    inconsistentConstraintAlign2AxesThreshold = 0.003f;
+    inconsistentConstraintCollisionThreshold = 0.02f;
+    inconsistentConstraintCollisionBaseThreshold = 0.001f;
+    inconsistentConstraintDeltaThreshold = 0.0001f;
+
+    // Change up things for inconsistency detector
+    if( type == Type_InconsistencyDetector )
+    {
+        inconsistentConstraintDetectorEnabled = true;
+        inconsistentConstraintMaxIterations = 100000;
+        pgsIterations = 100;
+
+        // Disable caching
+        posCacheDamping = 0.0f;
+        velCacheDamping = 0.0f;
+        constraintCachingEnabled = false;
+
+        // Disable block PGS
+        blockPGSEnabled = false;
+
+        // Disable SOR
+        velocityStageSOREnabled = false;
+        positionStageSOREnabled = false;
+
+        // Disable friction
+        collisionFrictionStaticScale = 0.0f;
+        collisionFrictionDynamicScale = 0.0f;
+
+        // Don't update body positions
+        updateSimBodies = false;
+
+        // Mass Stabilization
+        stabilizationMassReductionPower = 0.1f;
+
+        // Sim islands
+        useSimIslands = true;
+    }
+    printConvergenceDiagnostics = false;
+
+    if( type == Type_PositionalCorrection )
+    {
+        // Disable caching
+        posCacheDamping = 0.0f;
+        velCacheDamping = 0.0f;
+        constraintCachingEnabled = false;
+
+        // Disable block PGS
+        blockPGSEnabled = false;
+
+        // Disable SOR
+        velocityStageSOREnabled = false;
+        positionStageSOREnabled = false;
+
+        // Disable friction
+        collisionFrictionStaticScale = 0.0f;
+        collisionFrictionDynamicScale = 0.0f;
+
+        integrateOnlyPositions = true;
+    }
+}
+
+}