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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 "PointSystems.h"
#include "RandomController.h"
WM5_WINDOW_APPLICATION(PointSystems);
//----------------------------------------------------------------------------
PointSystems::PointSystems ()
:
WindowApplication3("SampleGraphics/PointSystems", 0, 0, 640, 480,
Float4(0.75f, 0.75f, 0.75f, 1.0f)),
mTextColor(1.0f, 1.0f, 1.0f, 1.0f)
{
}
//----------------------------------------------------------------------------
bool PointSystems::OnInitialize ()
{
if (!WindowApplication3::OnInitialize())
{
return false;
}
// Set up the camera.
mCamera->SetFrustum(60.0f, GetAspectRatio(), 1.0f, 1000.0f);
APoint camPosition(4.0f, 0.0f, 0.0f);
AVector camDVector(-1.0f, 0.0f, 0.0f);
AVector camUVector(0.0f, 0.0f, 1.0f);
AVector camRVector = camDVector.Cross(camUVector);
mCamera->SetFrame(camPosition, camDVector, camUVector, camRVector);
CreateScene();
// Initial update of objects.
mScene->Update();
// Initial culling of scene.
mCuller.SetCamera(mCamera);
mCuller.ComputeVisibleSet(mScene);
InitializeCameraMotion(0.01f, 0.01f);
InitializeObjectMotion(mScene);
return true;
}
//----------------------------------------------------------------------------
void PointSystems::OnTerminate ()
{
mScene = 0;
WindowApplication3::OnTerminate();
}
//----------------------------------------------------------------------------
void PointSystems::OnIdle ()
{
MeasureTime();
MoveCamera();
MoveObject();
mScene->Update(GetTimeInSeconds());
mCuller.ComputeVisibleSet(mScene);
if (mRenderer->PreDraw())
{
mRenderer->ClearBuffers();
mRenderer->Draw(mCuller.GetVisibleSet());
DrawFrameRate(8, GetHeight()-8, mTextColor);
mRenderer->PostDraw();
mRenderer->DisplayColorBuffer();
}
UpdateFrameCount();
}
//----------------------------------------------------------------------------
void PointSystems::CreateScene ()
{
mScene = new0 Node();
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(1024, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Position<Float3>(i) = Float3(Mathf::SymmetricRandom(),
Mathf::SymmetricRandom(), Mathf::SymmetricRandom());
vba.Color<Float3>(0, i) = Float3(Mathf::UnitRandom(),
Mathf::UnitRandom(), Mathf::UnitRandom());
}
Polypoint* points = new0 Polypoint(vformat, vbuffer);
points->AttachController(new0 RandomController());
points->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
mScene->AttachChild(points);
}
//----------------------------------------------------------------------------
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