CWE-ou-minkata/Sources/Plasma/PubUtilLib/plInterp/plController.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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*==LICENSE==*/
#include "plController.h"
#include "hsInterp.h"
#include "hsResMgr.h"

#include "plTransform/hsEuler.h"
#include "plAnimTimeConvert.h"

#include <algorithm>
#include <type_traits>


/////////////////////////////////////////////
// Controller interp caching
/////////////////////////////////////////////

static const char *kInvalidInterpString = "Invalid call to plController::Interp()";

plControllerCacheInfo::plControllerCacheInfo() : fNumSubControllers(0), fSubControllers(nil), fKeyIndex(0), fAtc(nil) {}

plControllerCacheInfo::~plControllerCacheInfo()
{
    int i;
    for (i = 0; i < fNumSubControllers; i++)
        delete fSubControllers[i];

    delete [] fSubControllers;
}

void plControllerCacheInfo::SetATC(plAnimTimeConvert *atc)
{
    fAtc = atc;
    int i;
    for (i = 0; i < fNumSubControllers; i++)
        if (fSubControllers[i])
            fSubControllers[i]->SetATC(atc);
}

//////////////////////////////////////////////////////////////////////////////////////////

plLeafController::~plLeafController()
{
    delete[] reinterpret_cast<hsKeyFrame *>(fKeys);
}

void plLeafController::Interp(float time, float* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kScalarKeyFrame || fType == hsKeyFrame::kBezScalarKeyFrame, kInvalidInterpString);
    
    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    if (fType == hsKeyFrame::kScalarKeyFrame)
    {
        hsScalarKey *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsScalarKey), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::LinInterp(k1->fValue, k2->fValue, t, result);
    }
    else
    {
        hsBezScalarKey *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsBezScalarKey), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::BezInterp(k1, k2, t, result);
    }
}

void plLeafController::Interp(float time, hsScalarTriple* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kPoint3KeyFrame || fType == hsKeyFrame::kBezPoint3KeyFrame, kInvalidInterpString);

    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    if (fType == hsKeyFrame::kPoint3KeyFrame)
    {
        hsPoint3Key *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsPoint3Key), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::LinInterp(&k1->fValue, &k2->fValue, t, result);
    }
    else
    {
        hsBezPoint3Key *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsBezPoint3Key), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::BezInterp(k1, k2, t, result);
    }
}

void plLeafController::Interp(float time, hsScaleValue* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kScaleKeyFrame || fType == hsKeyFrame::kBezScaleKeyFrame, kInvalidInterpString);

    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    if (fType == hsKeyFrame::kScaleKeyFrame)
    {
        hsScaleKey *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsScaleKey), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::LinInterp(&k1->fValue, &k2->fValue, t, result);
    }
    else
    {
        hsBezScaleKey *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsBezScaleKey), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::BezInterp(k1, k2, t, result);
    }
}

void plLeafController::Interp(float time, hsQuat* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kQuatKeyFrame || 
             fType == hsKeyFrame::kCompressedQuatKeyFrame32 ||
             fType == hsKeyFrame::kCompressedQuatKeyFrame64, kInvalidInterpString);

    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    if (fType == hsKeyFrame::kQuatKeyFrame)
    {
        hsQuatKey *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsQuatKey), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
        hsInterp::LinInterp(&k1->fValue, &k2->fValue, t, result);
    }
    else if (fType == hsKeyFrame::kCompressedQuatKeyFrame32)
    {
        hsCompressedQuatKey32 *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsCompressedQuatKey32), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);

        hsQuat q1, q2;
        k1->GetQuat(q1);
        k2->GetQuat(q2);
        hsInterp::LinInterp(&q1, &q2, t, result);
    }
    else // (fType == hsKeyFrame::kCompressedQuatKeyFrame64)
    {
        hsCompressedQuatKey64 *k1, *k2;
        float t;
        uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
        hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsCompressedQuatKey64), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);

        hsQuat q1, q2;
        k1->GetQuat(q1);
        k2->GetQuat(q2);
        hsInterp::LinInterp(&q1, &q2, t, result);
    }
}

void plLeafController::Interp(float time, hsMatrix33* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kMatrix33KeyFrame, kInvalidInterpString);

    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    hsMatrix33Key *k1, *k2;
    float t;
    uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
    hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsMatrix33Key), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
    hsInterp::LinInterp(&k1->fValue, &k2->fValue, t, result);
}

void plLeafController::Interp(float time, hsMatrix44* result, plControllerCacheInfo *cache) const
{
    hsAssert(fType == hsKeyFrame::kMatrix44KeyFrame, kInvalidInterpString);

    bool tryForward = (cache? cache->fAtc->IsForewards() : true);
    hsMatrix44Key *k1, *k2;
    float t;
    uint32_t *idxStore = (cache ? &cache->fKeyIndex : &fLastKeyIdx);
    hsInterp::GetBoundaryKeyFrames(time, fNumKeys, fKeys, sizeof(hsMatrix44Key), (hsKeyFrame**)&k1, (hsKeyFrame**)&k2, idxStore, &t, tryForward);
    hsInterp::LinInterp(&k1->fValue, &k2->fValue, t, result);
}

void plLeafController::Interp(float time, hsColorRGBA* result, plControllerCacheInfo *cache) const
{
    hsPoint3 value;
    Interp(time, &value, cache);
    result->r = value.fX;
    result->g = value.fY;
    result->b = value.fZ;
}

plControllerCacheInfo *plLeafController::CreateCache() const
{
    plControllerCacheInfo *cache = new plControllerCacheInfo;
    cache->fNumSubControllers = 0;
    return cache;
}

float plLeafController::GetLength() const
{
    uint32_t stride = GetStride();
    if (stride == 0 || fNumKeys == 0)
        return 0;

    uint8_t *ptr = (uint8_t *)fKeys;
    return ((hsKeyFrame *)(ptr + (fNumKeys - 1) * stride))->fFrame / MAX_FRAMES_PER_SEC; 
}

uint32_t plLeafController::GetStride() const
{
    switch (fType)
    {
    case hsKeyFrame::kPoint3KeyFrame:
        return sizeof(hsPoint3Key);
    case hsKeyFrame::kBezPoint3KeyFrame:
        return sizeof(hsBezPoint3Key);
    case hsKeyFrame::kScalarKeyFrame:
        return sizeof(hsScalarKey);
    case hsKeyFrame::kBezScalarKeyFrame:
        return sizeof(hsBezScalarKey);
    case hsKeyFrame::kScaleKeyFrame:
        return sizeof(hsScaleKey);
    case hsKeyFrame::kBezScaleKeyFrame:
        return sizeof(hsBezScaleKey);
    case hsKeyFrame::kQuatKeyFrame:
        return sizeof(hsQuatKey);
    case hsKeyFrame::kCompressedQuatKeyFrame32:
        return sizeof(hsCompressedQuatKey32);
    case hsKeyFrame::kCompressedQuatKeyFrame64:
        return sizeof(hsCompressedQuatKey64);
    case hsKeyFrame::k3dsMaxKeyFrame:
        return sizeof(hsG3DSMaxKeyFrame);
    case hsKeyFrame::kMatrix33KeyFrame:
        return sizeof(hsMatrix33Key);
    case hsKeyFrame::kMatrix44KeyFrame:
        return sizeof(hsMatrix44Key);
    case hsKeyFrame::kUnknownKeyFrame:
    default:
        return 0;
    }
}

hsPoint3Key *plLeafController::GetPoint3Key(uint32_t i) const
{
    if (fType != hsKeyFrame::kPoint3KeyFrame)
        return nil;

    return (hsPoint3Key *)((uint8_t *)fKeys + i * sizeof(hsPoint3Key));
}

hsBezPoint3Key *plLeafController::GetBezPoint3Key(uint32_t i) const
{
    if (fType != hsKeyFrame::kBezPoint3KeyFrame)
        return nil;

    return (hsBezPoint3Key *)((uint8_t *)fKeys + i * sizeof(hsBezPoint3Key));
}

hsScalarKey *plLeafController::GetScalarKey(uint32_t i) const
{
    if (fType != hsKeyFrame::kScalarKeyFrame)
        return nil;

    return (hsScalarKey *)((uint8_t *)fKeys + i * sizeof(hsScalarKey));
}

hsBezScalarKey *plLeafController::GetBezScalarKey(uint32_t i) const
{
    if (fType != hsKeyFrame::kBezScalarKeyFrame)
        return nil;

    return (hsBezScalarKey *)((uint8_t *)fKeys + i * sizeof(hsBezScalarKey));
}

hsScaleKey *plLeafController::GetScaleKey(uint32_t i) const
{
    if (fType != hsKeyFrame::kScaleKeyFrame)
        return nil;

    return (hsScaleKey *)((uint8_t *)fKeys + i * sizeof(hsScaleKey));
}

hsBezScaleKey *plLeafController::GetBezScaleKey(uint32_t i) const
{
    if (fType != hsKeyFrame::kBezScaleKeyFrame)
        return nil;

    return (hsBezScaleKey *)((uint8_t *)fKeys + i * sizeof(hsBezScaleKey));
}

hsQuatKey *plLeafController::GetQuatKey(uint32_t i) const
{
    if (fType != hsKeyFrame::kQuatKeyFrame)
        return nil;

    return (hsQuatKey *)((uint8_t *)fKeys + i * sizeof(hsQuatKey));
}

hsCompressedQuatKey32 *plLeafController::GetCompressedQuatKey32(uint32_t i) const
{
    if (fType != hsKeyFrame::kCompressedQuatKeyFrame32)
        return nil;

    return (hsCompressedQuatKey32 *)((uint8_t *)fKeys + i * sizeof(hsCompressedQuatKey32));
}

hsCompressedQuatKey64 *plLeafController::GetCompressedQuatKey64(uint32_t i) const
{
    if (fType != hsKeyFrame::kCompressedQuatKeyFrame64)
        return nil;

    return (hsCompressedQuatKey64 *)((uint8_t *)fKeys + i * sizeof(hsCompressedQuatKey64));
}

hsG3DSMaxKeyFrame *plLeafController::Get3DSMaxKey(uint32_t i) const
{
    if (fType != hsKeyFrame::k3dsMaxKeyFrame)
        return nil;

    return (hsG3DSMaxKeyFrame *)((uint8_t *)fKeys + i * sizeof(hsG3DSMaxKeyFrame));
}

hsMatrix33Key *plLeafController::GetMatrix33Key(uint32_t i) const
{
    if (fType != hsKeyFrame::kMatrix33KeyFrame)
        return nil;

    return (hsMatrix33Key *)((uint8_t *)fKeys + i * sizeof(hsMatrix33Key));
}

hsMatrix44Key *plLeafController::GetMatrix44Key(uint32_t i) const
{
    if (fType != hsKeyFrame::kMatrix44KeyFrame)
        return nil;

    return (hsMatrix44Key *)((uint8_t *)fKeys + i * sizeof(hsMatrix44Key));
}

void plLeafController::GetKeyTimes(hsTArray<float> &keyTimes) const
{
    int cIdx = 0;
    int kIdx = 0;
    uint32_t stride = GetStride();
    uint8_t *keyPtr = (uint8_t *)fKeys;
    while (cIdx < fNumKeys && kIdx < keyTimes.GetCount())
    {
        float kTime = keyTimes[kIdx];
        float cTime = ((hsKeyFrame*)(keyPtr + cIdx * stride))->fFrame / MAX_FRAMES_PER_SEC;
        if (cTime < kTime)
        {
            keyTimes.InsertAtIndex(kIdx, cTime);
            cIdx++;
            kIdx++;
        }
        else if (cTime > kTime)
        {
            kIdx++;
        }
        else
        {
            kIdx++;
            cIdx++;
        }
    }

    // All remaining times in the controller are later than the original keyTimes set
    for (; cIdx < fNumKeys; cIdx++)
    {
        float cTime = ((hsKeyFrame*)(keyPtr + cIdx * stride))->fFrame / MAX_FRAMES_PER_SEC;
        keyTimes.Append(cTime);
    }
}

void plLeafController::AllocKeys(uint32_t numKeys, uint8_t type)
{
    delete[] reinterpret_cast<hsKeyFrame *>(fKeys);
    fNumKeys = numKeys;
    fType = type;

    switch (fType)
    {
    case hsKeyFrame::kPoint3KeyFrame:
        static_assert(std::is_trivially_destructible<hsPoint3Key>::value,
                      "hsPoint3Key MUST be trivially destructible");
        fKeys = new hsPoint3Key[fNumKeys];
        break;

    case hsKeyFrame::kBezPoint3KeyFrame:
        static_assert(std::is_trivially_destructible<hsBezPoint3Key>::value,
                      "hsBezPoint3Key MUST be trivially destructible");
        fKeys = new hsBezPoint3Key[fNumKeys];
        break;

    case hsKeyFrame::kScalarKeyFrame:
        static_assert(std::is_trivially_destructible<hsScalarKey>::value,
                      "hsScalarKey MUST be trivially destructible");
        fKeys = new hsScalarKey[fNumKeys];
        break;

    case hsKeyFrame::kBezScalarKeyFrame:
        static_assert(std::is_trivially_destructible<hsBezScalarKey>::value,
                      "hsBezScalarKey MUST be trivially destructible");
        fKeys = new hsBezScalarKey[fNumKeys];
        break;

    case hsKeyFrame::kScaleKeyFrame:
        static_assert(std::is_trivially_destructible<hsScaleKey>::value,
                      "hsScaleKey MUST be trivially destructible");
        fKeys = new hsScaleKey[fNumKeys];
        break;

    case hsKeyFrame::kBezScaleKeyFrame:
        static_assert(std::is_trivially_destructible<hsBezScaleKey>::value,
                      "hsBezScaleKey MUST be trivially destructible");
        fKeys = new hsBezScaleKey[fNumKeys];
        break;

    case hsKeyFrame::kQuatKeyFrame:
        static_assert(std::is_trivially_destructible<hsQuatKey>::value,
                      "hsQuatKey MUST be trivially destructible");
        fKeys = new hsQuatKey[fNumKeys];
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame32:
        static_assert(std::is_trivially_destructible<hsCompressedQuatKey32>::value,
                      "hsCompressedQuatKey32 MUST be trivially destructible");
        fKeys = new hsCompressedQuatKey32[fNumKeys];
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame64:
        static_assert(std::is_trivially_destructible<hsCompressedQuatKey64>::value,
                      "hsCompressedQuatKey64 MUST be trivially destructible");
        fKeys = new hsCompressedQuatKey64[fNumKeys];
        break;

    case hsKeyFrame::k3dsMaxKeyFrame:
        static_assert(std::is_trivially_destructible<hsG3DSMaxKeyFrame>::value,
                      "hsG3DSMaxKeyFrame MUST be trivially destructible");
        fKeys = new hsG3DSMaxKeyFrame[fNumKeys];
        break;

    case hsKeyFrame::kMatrix33KeyFrame:
        static_assert(std::is_trivially_destructible<hsMatrix33Key>::value,
                      "hsMatrix33Key MUST be trivially destructible");
        fKeys = new hsMatrix33Key[fNumKeys];
        break;

    case hsKeyFrame::kMatrix44KeyFrame:
        static_assert(std::is_trivially_destructible<hsMatrix44Key>::value,
                      "hsMatrix44Key MUST be trivially destructible");
        fKeys = new hsMatrix44Key[fNumKeys];
        break;

    case hsKeyFrame::kUnknownKeyFrame:
    default:
        hsAssert(false, "Trying to allocate unknown keyframe type");
        break;
    }
}

void plLeafController::QuickScalarController(int numKeys, float* times, float* values, uint32_t valueStrides)
{
    AllocKeys(numKeys, hsKeyFrame::kScalarKeyFrame);
    int i;
    for( i = 0; i < numKeys; i++ )
    {
        ((hsScalarKey*)fKeys)[i].fFrame = (uint16_t)(*times++ * MAX_FRAMES_PER_SEC);
        ((hsScalarKey*)fKeys)[i].fValue = *values;
        values = (float *)((uint8_t *)values + valueStrides);
    }
}

// If all the keys are the same, this controller is pretty useless.
// This situation actually comes up a lot because of the biped killer
// trying to convert character studio animations.
bool plLeafController::AllKeysMatch() const
{
    if (fNumKeys <= 1)
        return true;

    int idx;
    for (idx = 1; idx < fNumKeys; idx++)
    {
        switch (fType)
        {
        case hsKeyFrame::kPoint3KeyFrame:
            {
                hsPoint3Key *k1 = GetPoint3Key(idx - 1);
                hsPoint3Key *k2 = GetPoint3Key(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kBezPoint3KeyFrame:
            {
                hsBezPoint3Key *k1 = GetBezPoint3Key(idx - 1);
                hsBezPoint3Key *k2 = GetBezPoint3Key(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kScalarKeyFrame:
            {
                hsScalarKey *k1 = GetScalarKey(idx - 1);
                hsScalarKey *k2 = GetScalarKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kBezScalarKeyFrame:
            {
                hsBezScalarKey *k1 = GetBezScalarKey(idx - 1);
                hsBezScalarKey *k2 = GetBezScalarKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kScaleKeyFrame:
            {
                hsScaleKey *k1 = GetScaleKey(idx - 1);
                hsScaleKey *k2 = GetScaleKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kBezScaleKeyFrame:
            {
                hsBezScaleKey *k1 = GetBezScaleKey(idx - 1);
                hsBezScaleKey *k2 = GetBezScaleKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kQuatKeyFrame:
            {
                hsQuatKey *k1 = GetQuatKey(idx - 1);
                hsQuatKey *k2 = GetQuatKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kCompressedQuatKeyFrame32:
            {
                hsCompressedQuatKey32 *k1 = GetCompressedQuatKey32(idx - 1);
                hsCompressedQuatKey32 *k2 = GetCompressedQuatKey32(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kCompressedQuatKeyFrame64:
            {
                hsCompressedQuatKey64 *k1 = GetCompressedQuatKey64(idx - 1);
                hsCompressedQuatKey64 *k2 = GetCompressedQuatKey64(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::k3dsMaxKeyFrame:
            {
                hsG3DSMaxKeyFrame *k1 = Get3DSMaxKey(idx - 1);
                hsG3DSMaxKeyFrame *k2 = Get3DSMaxKey(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kMatrix33KeyFrame:
            {
                hsMatrix33Key *k1 = GetMatrix33Key(idx - 1);
                hsMatrix33Key *k2 = GetMatrix33Key(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kMatrix44KeyFrame:
            {
                hsMatrix44Key *k1 = GetMatrix44Key(idx - 1);
                hsMatrix44Key *k2 = GetMatrix44Key(idx);
                if (!k1->CompareValue(k2))
                    return false;
                break;
            }
        case hsKeyFrame::kUnknownKeyFrame:
        default:
            hsAssert(false, "Trying to compare unknown keyframe type");
            return false;
        }
    }
    return true;
}

bool plLeafController::PurgeRedundantSubcontrollers()
{
    return AllKeysMatch();
}

void plLeafController::Read(hsStream* s, hsResMgr *mgr)
{
    uint8_t type = s->ReadByte();
    uint32_t numKeys = s->ReadLE32();
    AllocKeys(numKeys, type);

    int i;
    switch (fType)
    {
    case hsKeyFrame::kPoint3KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsPoint3Key *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kBezPoint3KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezPoint3Key *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kScalarKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsScalarKey *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kBezScalarKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezScalarKey *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kScaleKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsScaleKey *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kBezScaleKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezScaleKey *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kQuatKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsQuatKey *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame32:
        for (i = 0; i < fNumKeys; i++)
            ((hsCompressedQuatKey32 *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame64:
        for (i = 0; i < fNumKeys; i++)
            ((hsCompressedQuatKey64 *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::k3dsMaxKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsG3DSMaxKeyFrame *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kMatrix33KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsMatrix33Key *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kMatrix44KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsMatrix44Key *)fKeys)[i].Read(s);
        break;

    case hsKeyFrame::kUnknownKeyFrame:
    default:
        hsAssert(false, "Reading in controller with unknown key data");
        break;
    }
}

void plLeafController::Write(hsStream* s, hsResMgr *mgr)
{
    s->WriteByte(fType);
    s->WriteLE32(fNumKeys);

    int i;
    switch (fType)
    {
    case hsKeyFrame::kPoint3KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsPoint3Key *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kBezPoint3KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezPoint3Key *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kScalarKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsScalarKey *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kBezScalarKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezScalarKey *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kScaleKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsScaleKey *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kBezScaleKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsBezScaleKey *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kQuatKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsQuatKey *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame32:
        for (i = 0; i < fNumKeys; i++)
            ((hsCompressedQuatKey32 *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kCompressedQuatKeyFrame64:
        for (i = 0; i < fNumKeys; i++)
            ((hsCompressedQuatKey64 *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::k3dsMaxKeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsG3DSMaxKeyFrame *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kMatrix33KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsMatrix33Key *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kMatrix44KeyFrame:
        for (i = 0; i < fNumKeys; i++)
            ((hsMatrix44Key *)fKeys)[i].Write(s);
        break;

    case hsKeyFrame::kUnknownKeyFrame:
    default:
        hsAssert(false, "Writing controller with unknown key data");
        break;
    }
}

/////////////////////////////////////////////////////////////////////////////////

plCompoundController::plCompoundController() : fXController(nil), fYController(nil), fZController(nil) {}

plCompoundController::~plCompoundController()
{
    delete fXController;
    delete fYController;
    delete fZController;
}

void plCompoundController::Interp(float time, hsScalarTriple* result, plControllerCacheInfo *cache) const
{
    if (fXController)
        fXController->Interp(time, &result->fX, (cache ? cache->fSubControllers[0] : nil));
    if (fYController)
        fYController->Interp(time, &result->fY, (cache ? cache->fSubControllers[1] : nil));
    if (fZController)
        fZController->Interp(time, &result->fZ, (cache ? cache->fSubControllers[2] : nil));
}

void plCompoundController::Interp(float time, hsQuat* result, plControllerCacheInfo *cache) const
{
    hsEuler eul(0,0,0,EulOrdXYZs);

    fXController->Interp(time, &eul.fX, (cache ? cache->fSubControllers[0] : nil));
    fYController->Interp(time, &eul.fY, (cache ? cache->fSubControllers[1] : nil));
    fZController->Interp(time, &eul.fZ, (cache ? cache->fSubControllers[2] : nil));

    eul.GetQuat(result);
}

void plCompoundController::Interp(float time, hsAffineParts* parts, plControllerCacheInfo *cache) const
{
    if (fXController)
        fXController->Interp(time, &parts->fT, (cache ? cache->fSubControllers[0] : nil));

    if (fYController)
        fYController->Interp(time, &parts->fQ, (cache ? cache->fSubControllers[1] : nil));

    hsScaleValue sv;
    if (fZController)
    {
        fZController->Interp(time, &sv, (cache ? cache->fSubControllers[2] : nil));
        parts->fU = sv.fQ;
        parts->fK = sv.fS;
    }
}

void plCompoundController::Interp(float time, hsColorRGBA* result, plControllerCacheInfo *cache) const
{
    fXController->Interp(time, &result->r, (cache ? cache->fSubControllers[0] : nil));
    fYController->Interp(time, &result->g, (cache ? cache->fSubControllers[1] : nil));
    fZController->Interp(time, &result->b, (cache ? cache->fSubControllers[2] : nil));
}

float plCompoundController::GetLength() const
{
    float len=0;
    int i;
    for(i=0; i<3; i++)
    {
        if (GetController(i))
            len = std::max(len, GetController(i)->GetLength());
    }
    return len;
}

void plCompoundController::GetKeyTimes(hsTArray<float> &keyTimes) const
{
    if (fXController)
        fXController->GetKeyTimes(keyTimes);
    if (fYController)
        fYController->GetKeyTimes(keyTimes);
    if (fZController)
        fZController->GetKeyTimes(keyTimes);
}

bool plCompoundController::AllKeysMatch() const
{
    return (!fXController || fXController->AllKeysMatch()) &&
           (!fYController || fYController->AllKeysMatch()) &&
           (!fZController || fZController->AllKeysMatch());
}

// Careful here... We might detect that one of our subcontrollers
// has animation keys that all have the same value. That doesn't
// mean they're all zero though. An avatar animation might have
// elbow bend a constant 90 degrees through the entire anim, but
// if we delete the controller and assume zero, we'll have problems.
// Transform controller channels get around this by sampling the source
// first and using that to fill in the missing subcontrollers.
//
// Note: that one of our subcontrollers could itself be a compound
// controller. An example would be a controller for XYZ Euler angles
// that's a sub of the pos/rot/scale transform controller.
// It's possible that some of these sub-sub controllers could be
// removed, but then we'd have to store the default values somewhere.
// At the moment, this doesn't seem likely to save us enough space
// to be worth the effort. (This is why this function doesn't
// recursively call purge on its subcontrollers.)
bool plCompoundController::PurgeRedundantSubcontrollers()
{
    if (fXController && fXController->AllKeysMatch())
    {
        delete fXController;
        fXController = nil;
    }

    if (fYController && fYController->AllKeysMatch())
    {
        delete fYController;
        fYController = nil;
    }

    if (fZController && fZController->AllKeysMatch())
    {
        delete fZController;
        fZController = nil;
    }

    return (!fXController && !fYController && !fZController);
}

plControllerCacheInfo* plCompoundController::CreateCache() const
{
    plControllerCacheInfo* cache = new plControllerCacheInfo;
    cache->fNumSubControllers = 3;
    cache->fSubControllers = new plControllerCacheInfo*[cache->fNumSubControllers];
    int i;
    for (i = 0; i < cache->fNumSubControllers; i++)
        cache->fSubControllers[i] = (GetController(i) ? GetController(i)->CreateCache() : nil);

    return cache;
}

plController* plCompoundController::GetController(int32_t i) const
{ 
    return (i==0 ? fXController : (i==1 ? fYController : fZController)); 
}

void plCompoundController::SetController(int32_t i, plController* c) 
{ 
    delete GetController(i); 
    (i==0 ? fXController : (i==1 ? fYController : fZController)) = c; 
}

void plCompoundController::Read(hsStream* stream, hsResMgr *mgr)
{
    fXController = plController::ConvertNoRef(mgr->ReadCreatable(stream));
    fYController = plController::ConvertNoRef(mgr->ReadCreatable(stream));
    fZController = plController::ConvertNoRef(mgr->ReadCreatable(stream));
}

void plCompoundController::Write(hsStream* stream, hsResMgr *mgr)
{
    mgr->WriteCreatable(stream, fXController);
    mgr->WriteCreatable(stream, fYController);
    mgr->WriteCreatable(stream, fZController);
}