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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: 5.1.0 (2010/04/14)
#include "Wm5GraphicsPCH.h"
#include "Wm5BlendTransformController.h"
#include "Wm5HQuaternion.h"
#include "Wm5Spatial.h"
using namespace Wm5;
WM5_IMPLEMENT_RTTI(Wm5, TransformController, BlendTransformController);
WM5_IMPLEMENT_STREAM(BlendTransformController);
WM5_IMPLEMENT_FACTORY(BlendTransformController);
//----------------------------------------------------------------------------
BlendTransformController::BlendTransformController (
TransformController* controller0, TransformController* controller1,
bool rsMatrices, bool geometricRotation, bool geometricScale)
:
TransformController(Transform::IDENTITY),
mController0(controller0),
mController1(controller1),
mWeight(0.0f),
mRSMatrices(rsMatrices),
mGeometricRotation(geometricRotation),
mGeometricScale(geometricScale)
{
}
//----------------------------------------------------------------------------
BlendTransformController::~BlendTransformController ()
{
}
//----------------------------------------------------------------------------
bool BlendTransformController::Update (double applicationTime)
{
if (!Controller::Update(applicationTime))
{
return false;
}
mController0->Update(applicationTime);
mController1->Update(applicationTime);
const Transform& xfrm0 = mController0->GetTransform();
const Transform& xfrm1 = mController1->GetTransform();
float oneMinusWeight = 1.0f - mWeight;
// Arithmetic blend of translations.
const APoint& trn0 = xfrm0.GetTranslate();
const APoint& trn1 = xfrm1.GetTranslate();
APoint blendTrn = oneMinusWeight*trn0 + mWeight*trn1;
mLocalTransform.SetTranslate(blendTrn);
if (mRSMatrices)
{
const HMatrix& rot0 = xfrm0.GetRotate();
const HMatrix& rot1 = xfrm1.GetRotate();
HQuaternion quat0(rot0), quat1(rot1);
if (quat0.Dot(quat1) < 0.0f)
{
quat1 = -quat1;
}
APoint sca0 = xfrm0.GetScale();
APoint sca1 = xfrm1.GetScale();
HMatrix blendRot;
HQuaternion blendQuat;
APoint blendSca;
if (mGeometricRotation)
{
blendQuat.Slerp(mWeight, quat0, quat1);
}
else
{
blendQuat = oneMinusWeight*quat0 + mWeight*quat1;
blendQuat.Normalize();
}
blendQuat.ToRotationMatrix(blendRot);
mLocalTransform.SetRotate(blendRot);
if (mGeometricScale)
{
for (int i = 0; i < 3; ++i)
{
float s0 = sca0[i];
float s1 = sca1[i];
if (s0 != 0.0f && s1 != 0.0f)
{
float sign0 = Mathf::Sign(s0);
float sign1 = Mathf::Sign(s1);
s0 = Mathf::FAbs(s0);
s1 = Mathf::FAbs(s1);
float pow0 = Mathf::Pow(s0, oneMinusWeight);
float pow1 = Mathf::Pow(s1, mWeight);
blendSca[i] = sign0*sign1*pow0*pow1;
}
else
{
blendSca[i] = 0.0f;
}
}
}
else
{
blendSca = oneMinusWeight*sca0 + mWeight*sca1;
}
mLocalTransform.SetScale(blendSca);
}
else
{
// Arithemtic blend of matrices.
const HMatrix& mat0 = xfrm0.GetMatrix();
const HMatrix& mat1 = xfrm1.GetMatrix();
HMatrix blendMat = oneMinusWeight*mat0 + mWeight*mat1;
mLocalTransform.SetMatrix(blendMat);
}
Spatial* spatial = StaticCast<Spatial>(mObject);
spatial->LocalTransform = mLocalTransform;
return true;
}
//----------------------------------------------------------------------------
void BlendTransformController::SetObject (ControlledObject* object)
{
TransformController::SetObject(object);
mController0->SetObject(object);
mController1->SetObject(object);
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Name support.
//----------------------------------------------------------------------------
Object* BlendTransformController::GetObjectByName (const std::string& name)
{
Object* found = TransformController::GetObjectByName(name);
if (found)
{
return found;
}
WM5_GET_OBJECT_BY_NAME(mController0, name, found);
WM5_GET_OBJECT_BY_NAME(mController1, name, found);
return 0;
}
//----------------------------------------------------------------------------
void BlendTransformController::GetAllObjectsByName (const std::string& name,
std::vector<Object*>& objects)
{
TransformController::GetAllObjectsByName(name, objects);
WM5_GET_ALL_OBJECTS_BY_NAME(mController0, name, objects);
WM5_GET_ALL_OBJECTS_BY_NAME(mController1, name, objects);
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Streaming support.
//----------------------------------------------------------------------------
BlendTransformController::BlendTransformController (LoadConstructor value)
:
TransformController(value),
mWeight(0.0f),
mRSMatrices(false),
mGeometricRotation(false),
mGeometricScale(false)
{
}
//----------------------------------------------------------------------------
void BlendTransformController::Load (InStream& source)
{
WM5_BEGIN_DEBUG_STREAM_LOAD(source);
TransformController::Load(source);
source.ReadPointer(mController0);
source.ReadPointer(mController1);
source.Read(mWeight);
source.ReadBool(mRSMatrices);
source.ReadBool(mGeometricRotation);
source.ReadBool(mGeometricScale);
WM5_END_DEBUG_STREAM_LOAD(BlendTransformController, source);
}
//----------------------------------------------------------------------------
void BlendTransformController::Link (InStream& source)
{
TransformController::Link(source);
source.ResolveLink(mController0);
source.ResolveLink(mController1);
}
//----------------------------------------------------------------------------
void BlendTransformController::PostLink ()
{
TransformController::PostLink();
}
//----------------------------------------------------------------------------
bool BlendTransformController::Register (OutStream& target) const
{
if (TransformController::Register(target))
{
target.Register(mController0);
target.Register(mController1);
return true;
}
return false;
}
//----------------------------------------------------------------------------
void BlendTransformController::Save (OutStream& target) const
{
WM5_BEGIN_DEBUG_STREAM_SAVE(target);
TransformController::Save(target);
target.WritePointer(mController0);
target.WritePointer(mController1);
target.Write(mWeight);
target.WriteBool(mRSMatrices);
target.WriteBool(mGeometricRotation);
target.WriteBool(mGeometricScale);
WM5_END_DEBUG_STREAM_SAVE(BlendTransformController, target);
}
//----------------------------------------------------------------------------
int BlendTransformController::GetStreamingSize () const
{
int size = TransformController::GetStreamingSize();
size += WM5_POINTERSIZE(mController0);
size += WM5_POINTERSIZE(mController1);
size += sizeof(mWeight);
size += WM5_BOOLSIZE(mRSMatrices);
size += WM5_BOOLSIZE(mGeometricRotation);
size += WM5_BOOLSIZE(mGeometricScale);
return size;
}
//----------------------------------------------------------------------------
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