SlimDX Tutorial 4 - 삼각형 회전

#include <Windows.h>

using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;
using namespace SlimDX;
using namespace SlimDX::Direct3D9;

struct ColorVertex
{
 float x, y, z;
 int color;
};

public ref class WndForm : public Form
{
 Direct3D^ direct3D;
 Device^ device;
 PresentParameters^ presentParams;
 VertexBuffer^ vb;

public:
 WndForm()
 {   
  this->ClientSize = System::Drawing::Size(400, 300);
  this->StartPosition = FormStartPosition::CenterScreen;
  this->Text = "D3D Tutorial 4";
 }

 ~WndForm()
 {
  this->!WndForm();
 }

 !WndForm()
 {
  if (direct3D)
   delete direct3D;
  if (device)
   delete device;
  if (vb)
   delete vb;
 }

 bool InitD3D()
 {
  try {
   direct3D = gcnew Direct3D();
   presentParams = gcnew PresentParameters();
   presentParams->Windowed = true;
   presentParams->DeviceWindowHandle = this->Handle;
   presentParams->SwapEffect = SwapEffect::Discard;
   presentParams->BackBufferFormat = Format::X8R8G8B8;
   device = gcnew Device(direct3D, 0, DeviceType::Hardware, this->Handle, CreateFlags::SoftwareVertexProcessing | CreateFlags::Multithreaded, presentParams);

   device->SetRenderState(RenderState::CullMode, Cull::None);
   device->SetRenderState(RenderState::Lighting, false);

   vb = gcnew VertexBuffer(device, 3 * sizeof(ColorVertex), Usage::WriteOnly, VertexFormat::Position | VertexFormat::Diffuse, Pool::Default);
   DataStream^ stream = vb->Lock(0, 0, LockFlags::None);
   ColorVertex vertices[] =
   {
    { -1.0f,-1.0f, 0.0f, 0xffff0000, },
    {  1.0f,-1.0f, 0.0f, 0xff0000ff, },
    {  0.0f, 1.0f, 0.0f, 0xffffffff, },
   };
   stream->WriteRange(IntPtr(vertices), 3 * sizeof(ColorVertex));
   vb->Unlock(); 

   return true;
  }
  catch (Direct3D9Exception^) {
   return false;
  }  
 }

 void SetupMatrix()
 {  
  int dTime = Environment::TickCount % 1000;
  float angle = dTime * (2.0f * (float)Math::PI) / 1000.0f;

  device->SetTransform(TransformState::World, Matrix::RotationY(angle));
  device->SetTransform(TransformState::View, Matrix::LookAtLH(Vector3(0.0f, 3.0f, -5.0f), Vector3(0.0f, 0.0f, 0.0f), Vector3(0.0f, 1.0f, 0.0f)));
  device->SetTransform(TransformState::Projection, Matrix::PerspectiveFovLH((float)Math::PI / 4, 1.0f, 1.0f, 100.0f));
 }

 void Render()
 {
  if (!device)
   return;

  device->Clear(ClearFlags::Target, Color::DarkGray, 1.0f, 0);
  device->BeginScene();
  SetupMatrix();
  device->SetStreamSource(0, vb, 0, sizeof(ColorVertex));
  device->VertexFormat = VertexFormat::Position | VertexFormat::Diffuse;
  device->DrawPrimitives(PrimitiveType::TriangleList, 0, 1);
  device->EndScene();

  device->Present();
 }
};

INT WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, INT)
{   
 WndForm^ frm = gcnew WndForm();

 if (!frm->InitD3D()) {
  MessageBox::Show("Initializing D3D Device Failed");
  return 0;
 }

 frm->Show();

 while (frm->Created) {
  frm->Render();
  Application::DoEvents();
 }

 delete frm;

 return 0;
}