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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 "SimpleSegment.h"
using namespace Wm5;
WM5_IMPLEMENT_RTTI(Wm5, CurveSegment, SimpleSegment);
WM5_IMPLEMENT_STREAM(SimpleSegment);
WM5_IMPLEMENT_FACTORY(SimpleSegment);
WM5_IMPLEMENT_DEFAULT_NAMES(CurveSegment, SimpleSegment);
//----------------------------------------------------------------------------
SimpleSegment::SimpleSegment (float amplitude, float frequency, float height)
:
CurveSegment(0.0f, 1.0f),
mAmplitude(amplitude),
mFrequency(frequency),
mHeight(height)
{
mAmplFreq = mAmplitude*mFrequency;
mAmplFreqFreq = mAmplFreq*mFrequency;
mAmplFreqFreqFreq = mAmplFreqFreq*mFrequency;
}
//----------------------------------------------------------------------------
SimpleSegment::~SimpleSegment ()
{
}
//----------------------------------------------------------------------------
float SimpleSegment::GetAmplitude () const
{
return mAmplitude;
}
//----------------------------------------------------------------------------
float SimpleSegment::GetFrequency () const
{
return mFrequency;
}
//----------------------------------------------------------------------------
float SimpleSegment::GetHeight () const
{
return mHeight;
}
//----------------------------------------------------------------------------
APoint SimpleSegment::P (float u) const
{
// P(u) = (A*cos(F*u),A*sin(F*u),H*u)
float angle = mFrequency*u;
return APoint(
mAmplitude*Mathf::Cos(angle),
mAmplitude*Mathf::Sin(angle),
mHeight*u);
}
//----------------------------------------------------------------------------
AVector SimpleSegment::PU (float u) const
{
// P'(u) = (-A*F*sin(F*u),A*F*cos(F*u),H)
float angle = mFrequency*u;
return AVector(
-mAmplFreq*Mathf::Sin(angle),
mAmplFreq*Mathf::Cos(angle),
mHeight);
}
//----------------------------------------------------------------------------
AVector SimpleSegment::PUU (float u) const
{
// P"(u) = (-A*F*F*cos(F*u),-A*F*F*sin(F*u),0)
float angle = mFrequency*u;
return AVector(
-mAmplFreqFreq*Mathf::Cos(angle),
-mAmplFreqFreq*Mathf::Sin(angle),
0.0f);
}
//----------------------------------------------------------------------------
AVector SimpleSegment::PUUU (float u) const
{
// P"'(u) = (A*F*F*F*sin(F*u),-A*F*F*F*cos(F*u),0)
float angle = mFrequency*u;
return AVector(
mAmplFreqFreqFreq*Mathf::Sin(angle),
-mAmplFreqFreqFreq*Mathf::Cos(angle),
0.0f);
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Streaming support.
//----------------------------------------------------------------------------
SimpleSegment::SimpleSegment (LoadConstructor value)
:
CurveSegment(value),
mAmplitude(0.0f),
mFrequency(0.0f),
mHeight(0.0f),
mAmplFreq(0.0f),
mAmplFreqFreq(0.0f),
mAmplFreqFreqFreq(0.0f)
{
}
//----------------------------------------------------------------------------
void SimpleSegment::Load (InStream& source)
{
WM5_BEGIN_DEBUG_STREAM_LOAD(source);
CurveSegment::Load(source);
source.Read(mAmplitude);
source.Read(mFrequency);
source.Read(mHeight);
mAmplFreq = mAmplitude*mFrequency;
mAmplFreqFreq = mAmplFreq*mFrequency;
mAmplFreqFreqFreq = mAmplFreqFreq*mFrequency;
WM5_END_DEBUG_STREAM_LOAD(SimpleSegment, source);
}
//----------------------------------------------------------------------------
void SimpleSegment::Link (InStream& source)
{
CurveSegment::Link(source);
}
//----------------------------------------------------------------------------
void SimpleSegment::PostLink ()
{
CurveSegment::PostLink();
}
//----------------------------------------------------------------------------
bool SimpleSegment::Register (OutStream& target) const
{
return CurveSegment::Register(target);
}
//----------------------------------------------------------------------------
void SimpleSegment::Save (OutStream& target) const
{
WM5_BEGIN_DEBUG_STREAM_SAVE(target);
CurveSegment::Save(target);
target.Write(mAmplitude);
target.Write(mFrequency);
target.Write(mHeight);
WM5_END_DEBUG_STREAM_SAVE(CurveSegment, target);
}
//----------------------------------------------------------------------------
int SimpleSegment::GetStreamingSize () const
{
int size = CurveSegment::GetStreamingSize();
size += sizeof(mAmplitude);
size += sizeof(mFrequency);
size += sizeof(mHeight);
return size;
}
//----------------------------------------------------------------------------
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