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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 "BSplineFitContinuous.h"
WM5_WINDOW_APPLICATION(BSplineFitContinuous);
//----------------------------------------------------------------------------
BSplineFitContinuous::BSplineFitContinuous ()
:
WindowApplication3("SampleMathematics/BSplineFitContinuous", 0, 0, 512,
512, Float4(1.0f, 1.0f, 1.0f, 1.0f)),
mTextColor(0.0f, 0.0f, 0.0f, 1.0f)
{
Environment::InsertDirectory(ThePath + "Data/");
mDegree = 3;
}
//----------------------------------------------------------------------------
bool BSplineFitContinuous::OnInitialize ()
{
if (!WindowApplication3::OnInitialize())
{
return false;
}
CreateScene();
// Center-and-fit for camera viewing.
mScene->Update();
mTrnNode->LocalTransform.SetTranslate(-mScene->WorldBound.GetCenter());
mCamera->SetFrustum(60.0f, GetAspectRatio(), 1.0f, 10000.0f);
AVector camDVector(0.0f, 0.0f, 1.0f);
AVector camUVector(0.0f, 1.0f, 0.0f);
AVector camRVector = camDVector.Cross(camUVector);
APoint camPosition = APoint::ORIGIN -
2.5f*mScene->WorldBound.GetRadius()*camDVector;
mCamera->SetFrame(camPosition, camDVector, camUVector, camRVector);
// Initial update of objects.
mScene->Update();
// Initial culling of scene.
mCuller.SetCamera(mCamera);
mCuller.ComputeVisibleSet(mScene);
InitializeCameraMotion(10.0f, 0.01f);
InitializeObjectMotion(mScene);
return true;
}
//----------------------------------------------------------------------------
void BSplineFitContinuous::OnTerminate ()
{
mScene = 0;
mTrnNode = 0;
WindowApplication3::OnTerminate();
}
//----------------------------------------------------------------------------
void BSplineFitContinuous::OnIdle ()
{
MeasureTime();
if (MoveCamera())
{
mCuller.ComputeVisibleSet(mScene);
}
if (MoveObject())
{
mScene->Update();
mCuller.ComputeVisibleSet(mScene);
}
if (mRenderer->PreDraw())
{
mRenderer->ClearBuffers();
mRenderer->Draw(mCuller.GetVisibleSet());
DrawFrameRate(8, GetHeight()-8, mTextColor);
mRenderer->PostDraw();
mRenderer->DisplayColorBuffer();
}
UpdateFrameCount();
}
//----------------------------------------------------------------------------
void BSplineFitContinuous::CreateScene ()
{
mScene = new0 Node();
mTrnNode = new0 Node();
mScene->AttachChild(mTrnNode);
// Get control points for input curve.
std::string path = Environment::GetPathR("ControlPoints.txt");
std::ifstream inFile(path.c_str());
int numCtrlPoints;
inFile >> numCtrlPoints;
Vector3d* ctrlPoints = new1<Vector3d>(numCtrlPoints);
for (int i = 0; i < numCtrlPoints; ++i)
{
inFile >> ctrlPoints[i][0];
inFile >> ctrlPoints[i][1];
inFile >> ctrlPoints[i][2];
}
// Create polysegment connecting control points of input B-spline curve.
double fraction = 0.10;
Polysegment* segment = OriginalPolysegment(numCtrlPoints, ctrlPoints);
mTrnNode->AttachChild(segment);
// Create polysegment that approximates the reduced B-spline curve.
segment = ReducedPolysegment(numCtrlPoints, ctrlPoints, fraction);
mTrnNode->AttachChild(segment);
delete1(ctrlPoints);
}
//----------------------------------------------------------------------------
Polysegment* BSplineFitContinuous::OriginalPolysegment (int numCtrlPoints,
Vector3d* ctrlPoints)
{
BSplineCurve3d spline(numCtrlPoints, ctrlPoints, mDegree, false, true);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numCtrlPoints, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
Float3 red(1.0f, 0.0f, 0.0f);
for (int i = 0; i < numCtrlPoints; ++i)
{
double t = i/(double)numCtrlPoints;
Vector3d pos = spline.GetPosition(t);
vba.Position<Float3>(i) = Float3((float)pos[0], (float)pos[1],
(float)pos[2]);
vba.Color<Float3>(0, i) = red;
}
Polysegment* segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return segment;
}
//----------------------------------------------------------------------------
Polysegment* BSplineFitContinuous::ReducedPolysegment (int numCtrlPoints,
Vector3d* ctrlPoints, double fraction)
{
int numLSCtrlPoints;
Vector3d* lsCtrlPoints;
BSplineReduction3d(numCtrlPoints, ctrlPoints, mDegree, fraction,
numLSCtrlPoints, lsCtrlPoints);
BSplineCurve3d spline(numLSCtrlPoints, lsCtrlPoints, mDegree, false,
true);
delete1(lsCtrlPoints);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numCtrlPoints, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
Float3 blue(0.0f, 0.0f, 1.0f);
for (int i = 0; i < numCtrlPoints; ++i)
{
double t = i/(double)numCtrlPoints;
Vector3d pos = spline.GetPosition(t);
vba.Position<Float3>(i) = Float3((float)pos[0], (float)pos[1],
(float)pos[2]);
vba.Color<Float3>(0, i) = blue;
}
Polysegment* segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return segment;
}
//----------------------------------------------------------------------------
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