GAS/GAS_SubStep.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Jeff Lait
 *      Side Effects Software Inc
 *      123 Front Street West, Suite 1401
 *      Toronto, Ontario
 *      Canada   M5J 2M2
 *      416-504-9876
 *
 * NAME:        GAS_SubStep.h ( GAS Library, C++)
 *
 * COMMENTS:
 */

#ifndef __GAS_SubStep__
#define __GAS_SubStep__

#include "GAS_API.h"

#include "GAS_SubSolver.h"
#include "GAS_Utils.h"

class GAS_API GAS_SubStep : public GAS_SubSolver
{
public:
    GETSET_DATA_FUNCS_I(SIM_NAME_PRIMARYSOLVER, PrimarySolver);
    GET_DATA_FUNC_S(GAS_NAME_VELOCITY, VelocityName);
    GET_DATA_FUNC_S(GAS_NAME_GEOMETRY, GeometryName);
    GETSET_DATA_FUNCS_I("substeps", Substeps);
    GETSET_DATA_FUNCS_I("minimumsubsteps", MinimumSubsteps);
    GETSET_DATA_FUNCS_F("cflcond", CFLCond);

    GET_DATA_FUNC_S(GAS_NAME_TRACKERADDR, TrackerAddress);
    GET_DATA_FUNC_I(GAS_NAME_TRACKERPORT, TrackerPort);
    GET_DATA_FUNC_S(GAS_NAME_JOBNAME, JobName);
    GET_DATA_FUNC_I("slice", Slice);
    GET_DATA_FUNC_I("numslice", NumSlice);

    /// We to change the way in which our timestep is used so we have
    /// to preempt the solveGasSubclass.
    virtual SIM_Result  solveObjectsSubclass(SIM_Engine &engine,
                                SIM_ObjectArray &objects,
                                SIM_ObjectArray &newobjects,
                                SIM_ObjectArray &feedbacktoobjects,
                                const SIM_Time &timestep);
    
protected:
    explicit             GAS_SubStep(const SIM_DataFactory *factory);
    virtual             ~GAS_SubStep();

    virtual bool        solveGasSubclass(SIM_Engine &engine,
                            SIM_Object *obj,
                            SIM_Time time,
                            SIM_Time timestep)
                        {
                            return true;
                        }

    virtual void         getImpulseMassMatrixSubclass(
                                const SIM_Object &object,
                                const UT_Vector3 &impulseworldpos,
                                UT_DMatrix3 &immatrix) const;
    virtual void         getPointImpulseMassMatrixSubclass(
                                const SIM_Object &object,
                                int ptnum, UT_DMatrix3 &immatrix) const;
private:
    static const SIM_DopDescription     *getDopDescription();

    /// Gets the solver to use for getting object properties.
    const SIM_Solver                    *getCurrentSolver() const;

    /// Finds the new substep recommended by a solver that has indicated
    /// a substep needs to be repeated.
    SIM_Time                             getAdjustedSubStep(
                                            SIM_ObjectArray &objects);

    SIM_Solver                          *myCurrentSolver;

    DECLARE_STANDARD_GETCASTTOTYPE();
    DECLARE_DATAFACTORY(GAS_SubStep,
                        GAS_SubSolver,
                        "Gas SubStep",
                        getDopDescription());
};

#endif

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