MocapStreamRokokoHDK.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.
 *
 * NAME:        MocapStreamRokokoHDK.h ( KineFX Library, C++)
 *
 */
#ifndef __MOCAPSTREAMROKOKOHDK_H_INCLUDED__
#define __MOCAPSTREAMROKOKOHDK_H_INCLUDED__

#include <MC/MC_MocapStreamImpl.h>
#include <UT/UT_ArrayStringSet.h>

namespace HDK_Sample
{

class MocapStreamRokokoHDK : public MC_MocapStreamImpl
{
public:
    /// Initializes the MC_MocapStream::ServerOptions class with the default
    /// values for the different parameters on the MocapStream SOP and define
    /// which parameters are visible.
    MocapStreamRokokoHDK(const ServerOptions& opts = ServerOptions{
        14043, "", "", "", 0, 0, 32768,
        {true, false, false, false, false, false, true, false, false, false}}
    );
    ~MocapStreamRokokoHDK() override; 

    /// Creates a unique pointer to the the MocapStreamRokokoHDK device from
    /// a set of server options.
    ///
    /// This must be implemented and is used in the connection process.
    UT_UniquePtr<MC_MocapStreamImpl> clone(const ServerOptions& opts) override
    {
        return UTmakeUnique<MocapStreamRokokoHDK>(opts);
    }

    bool parsePacket(UT_StringHolder& packet,
                     fpreal packet_time,
                     bool &parse_incomplete) override;
    void updateJoints(GU_Detail *gdp,
                      const MC_MocapStreamCookParms &cookparms,
                      const MC_MocapStreamCookParms &prev_cookparms) override;
    void buildSkeleton(GU_Detail *gdp, UT_StringHolder name) override;
    void removeSkeleton(const UT_StringHolder& name) override;

    /// Define the label for this device. This will be added in the "Device"
    /// menu on the MocapStream SOP. 
    const char* label() const override { return "Rokoko Studio - HDK"; }

    /// Define a unique name for this device. This will be used to distinguish
    /// This device from other MocapStream devices.
    const char* name() const override  { return "rokoko_hdk"; }
    
private:
    void computeSkeletonTransforms();

    // A structure to hold all of the data for a single point in the motion
    // capture stream.
    struct ActorPoint
    {
        ActorPoint()
            : myWorldXform(1.0)
            , myLocalXform(1.0)
            , myDidReceive(true)
        {}

        UT_Matrix4F    myWorldXform;
        UT_Matrix4F    myLocalXform;

        bool           myDidReceive;
    };

    // A structure to hold all of the data for a single actor (skeleton or
    // rigid body) in the motion capture stream.
    struct Actor
    {
        Actor()
            : myOccurances(0)
            , myIsDirty(true)
        {}
        
        UT_StringHolder     myName;

        UT_Array<ActorPoint>      myPoints;
        UT_ArrayStringMap<fpreal> myBlendShapes;

        int myOccurances;
        bool myIsDirty;
    };

    // A structure to hold a set of actors (either skeletons or rigid bodies)
    // streamed from Rokoko Studio.
    class ActorList
    {
    public:
        ActorList() {}
        ~ActorList() {}

        exint size() { return myActors.size(); }

        void resetOccurances()
        {
            for (auto &actor : myActors)
            {
                actor.myOccurances = 0;
            }
        }

        Actor *addActor(UT_StringHolder name)
        {
            if (myNameToIdx.contains(name))
            {
                Actor &actor = myActors(myNameToIdx[name]);
                actor.myPoints.clear();
                return &actor;
            }

            Actor new_actor;
            new_actor.myName = name;

            myActors.append(new_actor);
            myNameToIdx[name] = myActors.entries()-1;

            return &myActors(myActors.entries()-1);
        }

        Actor *findActor(UT_StringHolder name)
        {
            if (myNameToIdx.contains(name))
                return &myActors(myNameToIdx[name]);

            return nullptr;
        }

        bool removeActor(UT_StringHolder name)
        {
            if (!myNameToIdx.contains(name))
                return false;

            exint removed_idx = myNameToIdx[name];
            myActors.removeIndex(removed_idx);

            for (auto it = myNameToIdx.begin(); !it.atEnd(); ++it)
            {
                if (it->second > removed_idx)
                    it->second--;
            }

            return true;
        }

        Actor &operator()(exint i)
        {
            if (i < 0)
                i = 0;
            if (i >= myActors.size())
                i = myActors.size()-1;

            return myActors(i);
        }
    private:
        UT_ArrayStringMap<exint> myNameToIdx;
        UT_Array<Actor> myActors;
    };

    ActorList mySkeletons;
    ActorList myProps;

    UT_ArrayStringMap<UT_StringArray> myNodeBlendShapes;
};
}
#endif