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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.0 (2010/01/01)
#include "Wm5GraphicsPCH.h"
#include "Wm5SkinController.h"
#include "Wm5Renderer.h"
#include "Wm5VertexBufferAccessor.h"
#include "Wm5Visual.h"
using namespace Wm5;
WM5_IMPLEMENT_RTTI(Wm5, Controller, SkinController);
WM5_IMPLEMENT_STREAM(SkinController);
WM5_IMPLEMENT_FACTORY(SkinController);
WM5_IMPLEMENT_DEFAULT_NAMES(Controller, SkinController);
//----------------------------------------------------------------------------
SkinController::SkinController (int numVertices, int numBones)
:
mNumVertices(numVertices),
mNumBones(numBones)
{
mBones = new1<Node*>(mNumBones);
mWeights = new2<float>(mNumBones, mNumVertices);
mOffsets = new2<APoint>(mNumBones, mNumVertices);
}
//----------------------------------------------------------------------------
SkinController::~SkinController ()
{
delete1(mBones);
delete2(mWeights);
delete2(mOffsets);
}
//----------------------------------------------------------------------------
bool SkinController::Update (double applicationTime)
{
if (!Controller::Update(applicationTime))
{
return false;
}
// Get access to the vertex buffer to store the blended targets.
Visual* visual = StaticCast<Visual>(mObject);
assertion(mNumVertices == visual->GetVertexBuffer()->GetNumElements(),
"Controller must have the same number of vertices as the buffer\n");
VertexBufferAccessor vba(visual);
// The skin vertices are calculated in the bone world coordinate system,
// so the visual's world transform must be the identity.
visual->WorldTransform = Transform::IDENTITY;
visual->WorldTransformIsCurrent = true;
// Compute the skin vertex locations.
for (int vertex = 0; vertex < mNumVertices; ++vertex)
{
APoint position = APoint::ORIGIN;
for (int bone = 0; bone < mNumBones; ++bone)
{
float weight = mWeights[vertex][bone];
if (weight != 0.0f)
{
APoint offset = mOffsets[vertex][bone];
APoint worldOffset = mBones[bone]->WorldTransform*offset;
position += weight*worldOffset;
}
}
vba.Position<Float3>(vertex) = position;
}
visual->UpdateModelSpace(Visual::GU_NORMALS);
Renderer::UpdateAll(visual->GetVertexBuffer());
return true;
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Streaming support.
//----------------------------------------------------------------------------
SkinController::SkinController (LoadConstructor value)
:
Controller(value),
mNumVertices(0),
mNumBones(0),
mBones(0),
mWeights(0),
mOffsets(0)
{
}
//----------------------------------------------------------------------------
void SkinController::Load (InStream& source)
{
WM5_BEGIN_DEBUG_STREAM_LOAD(source);
Controller::Load(source);
source.Read(mNumVertices);
source.Read(mNumBones);
int numWeightsOffsets = mNumVertices*mNumBones;
mWeights = new2<float>(mNumBones, mNumVertices);
mOffsets = new2<APoint>(mNumBones, mNumVertices);
source.ReadVV(numWeightsOffsets, mWeights[0]);
source.ReadAggregateVV(numWeightsOffsets, mOffsets[0]);
source.ReadPointerVR(mNumBones, mBones);
WM5_END_DEBUG_STREAM_LOAD(SkinController, source);
}
//----------------------------------------------------------------------------
void SkinController::Link (InStream& source)
{
Controller::Link(source);
source.ResolveLink(mNumBones, mBones);
}
//----------------------------------------------------------------------------
void SkinController::PostLink ()
{
Controller::PostLink();
}
//----------------------------------------------------------------------------
bool SkinController::Register (OutStream& target) const
{
if (Controller::Register(target))
{
target.Register(mNumBones, mBones);
return true;
}
return false;
}
//----------------------------------------------------------------------------
void SkinController::Save (OutStream& target) const
{
WM5_BEGIN_DEBUG_STREAM_SAVE(target);
Controller::Save(target);
target.Write(mNumVertices);
target.Write(mNumBones);
int numWeightsOffsets = mNumVertices*mNumBones;
target.WriteN(numWeightsOffsets, mWeights[0]);
target.WriteAggregateN(numWeightsOffsets, mOffsets[0]);
target.WritePointerN(mNumBones, mBones);
WM5_END_DEBUG_STREAM_SAVE(SkinController, target);
}
//----------------------------------------------------------------------------
int SkinController::GetStreamingSize () const
{
int size = Controller::GetStreamingSize();
size += sizeof(mNumVertices);
size += sizeof(mNumBones);
int numWeightsOffsets = mNumVertices*mNumBones;
size += numWeightsOffsets*sizeof(mWeights[0][0]);
size += numWeightsOffsets*sizeof(mOffsets[0][0]);
size += mNumBones*WM5_POINTERSIZE(mBones[0]);
return size;
}
//----------------------------------------------------------------------------
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