CWE-ou-minkata/Sources/Plasma/PubUtilLib/plSurface/plLayerMultiply.cpp

/*==LICENSE==*

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

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "plLayerMultiply.h"

plLayerMultiply::plLayerMultiply() : fDirtyChannels(0), fSrcOpacity(1.f)
{
    fSrcPreshadeColor.Set(1.f, 1.f, 1.f, 1.f);
    fSrcRuntimeColor.Set(1.f, 1.f, 1.f, 1.f);
    fSrcAmbientColor.Set(1.f, 1.f, 1.f, 1.f);
    fSrcTransform.Reset();
}

plLayerMultiply::~plLayerMultiply()
{
}

void plLayerMultiply::Read(hsStream* s, hsResMgr* mgr)
{
    plLayerInterface::Read(s, mgr);

    fOwnedChannels = s->ReadSwap32();
    if (fOwnedChannels & kOpacity)
    {
        fOpacity = TRACKED_NEW hsScalar;
        *fOpacity = fSrcOpacity = s->ReadSwapScalar();
        fDirtyChannels |= kOpacity;
    }
    
    if (fOwnedChannels & kPreshadeColor)
    {
        fPreshadeColor = TRACKED_NEW hsColorRGBA;
        fSrcPreshadeColor.Read(s);
        *fPreshadeColor = fSrcPreshadeColor;
        fDirtyChannels |= kPreshadeColor;
    }

    if (fOwnedChannels & kRuntimeColor)
    {
        fRuntimeColor = TRACKED_NEW hsColorRGBA;
        fSrcRuntimeColor.Read(s);
        *fRuntimeColor = fSrcRuntimeColor;
        fDirtyChannels |= kRuntimeColor;
    }

    if (fOwnedChannels & kAmbientColor)
    {
        fAmbientColor = TRACKED_NEW hsColorRGBA;
        fSrcAmbientColor.Read(s);
        *fAmbientColor = fSrcAmbientColor;
        fDirtyChannels |= kAmbientColor;
    }

    if (fOwnedChannels & kTransform)
    {
        fTransform = TRACKED_NEW hsMatrix44;
        fSrcTransform.Read(s);
        *fTransform = fSrcTransform;
        fDirtyChannels |= kTransform;
    }
}

void plLayerMultiply::Write(hsStream* s, hsResMgr* mgr)
{
    plLayerInterface::Write(s, mgr);

    s->WriteSwap32(fOwnedChannels);
    if (fOwnedChannels & kOpacity)
        s->WriteSwapScalar(fSrcOpacity);

    if (fOwnedChannels & kPreshadeColor)
        fSrcPreshadeColor.Write(s);

    if (fOwnedChannels & kRuntimeColor)
        fSrcRuntimeColor.Write(s);

    if (fOwnedChannels & kAmbientColor)
        fSrcAmbientColor.Write(s);

    if (fOwnedChannels & kTransform)
        fSrcTransform.Write(s);
}

plLayerInterface* plLayerMultiply::Attach(plLayerInterface* prev)
{
    return plLayerInterface::Attach(prev);
}

UInt32 plLayerMultiply::Eval(double wSecs, UInt32 frame, UInt32 ignore)
{
    UInt32 dirtyChannels = fDirtyChannels | plLayerInterface::Eval(wSecs, frame, ignore);
    UInt32 evalChannels = dirtyChannels & fOwnedChannels;

    if (evalChannels & kPreshadeColor)
        *fPreshadeColor = fSrcPreshadeColor * fUnderLay->GetPreshadeColor();

    if (evalChannels & kRuntimeColor)
        *fRuntimeColor = fSrcRuntimeColor * fUnderLay->GetRuntimeColor();

    if (evalChannels & kAmbientColor)
        *fAmbientColor = fSrcAmbientColor * fUnderLay->GetAmbientColor();

    if (evalChannels & kOpacity)
        *fOpacity = fSrcOpacity * fUnderLay->GetOpacity();

    if (evalChannels & kTransform)
        *fTransform = fSrcTransform * fUnderLay->GetTransform();

    fDirtyChannels = 0;
    return dirtyChannels;
}

hsBool plLayerMultiply::MsgReceive(plMessage* msg)
{
    return plLayerInterface::MsgReceive(msg);
}

void plLayerMultiply::SetPreshadeColor(const hsColorRGBA& col)
{
    fSrcPreshadeColor = col;
    fDirtyChannels |= kPreshadeColor;
}

void plLayerMultiply::SetRuntimeColor(const hsColorRGBA& col)
{
    fSrcRuntimeColor = col;
    fDirtyChannels |= kRuntimeColor;
}

void plLayerMultiply::SetAmbientColor(const hsColorRGBA& col)
{
    fSrcAmbientColor = col;
    fDirtyChannels |= kAmbientColor;
}

void plLayerMultiply::SetOpacity(hsScalar a)
{
    fSrcOpacity = a;
    fDirtyChannels |= kOpacity;
}

void plLayerMultiply::SetTransform(const hsMatrix44& xfm)
{
    fSrcTransform = xfm;
    fDirtyChannels |= kTransform;
}