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//-----------------------------------------------------------------------------
// File: Lights.cpp
// Copyright (c) Microsoft Corporation & Waitingfy.com. All rights reserved.
//-----------------------------------------------------------------------------
#include
#include
#include
#include
#include
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
LPDIRECT3D9 g_pD3D = NULL;// Used to create the D3DDevice
LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;// Our rendering device
LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;// Buffer to hold vertices
ID3DXMesh* Objects = 0;//茶壶
floatg_fSpinX = 0.0f;
floatg_fSpinY = 0.0f;
// A structure for our custom vertex type. We added a normal, and omitted the
// color (which is provided by the material)
structCUSTOMVERTEX
{
D3DXVECTOR3 position;// The 3D position for the vertex
D3DXVECTOR3 normal; // The surface normal for the vertex
};
// Our custom FVF, which describes our custom vertex structure
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_NORMAL)
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULTInitD3D( HWNDhWnd )
{
// Create the D3D object.
if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )
returnE_FAIL;
// Set up the structure used to create the D3DDevice. Since we are now
// using more complex geometry, we will create a device with a zbuffer.
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory( &d3dpp,sizeof(d3dpp) );
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
// Create the D3DDevice
if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp, &g_pd3dDevice ) ) )
{
returnE_FAIL;
}
// Turn off culling
g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
// Turn on the zbuffer
g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE );
returnS_OK;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOIDCleanup()
{
if( g_pVB != NULL )
g_pVB->Release();
if( g_pd3dDevice != NULL )
g_pd3dDevice->Release();
if( g_pD3D != NULL )
g_pD3D->Release();
if(Objects != NULL){
Objects->Release();
}
}
//-----------------------------------------------------------------------------
// Name: setupRotate()
// Desc: 绕3个角度旋转
//-----------------------------------------------------------------------------
VOIDsetupRotate(D3DXMATRIXA16 *returnMatrix, floatyaw, float pitch, float roll)
{
floatsx = sin(pitch);float sy = sin(yaw); float sz = sin(roll);
floatcx = cos(pitch);float cy = cos(yaw); float cz = cos(roll);
returnMatrix->_11 = cz * cy - sx * sy * sz;
returnMatrix->_12 = cy * sz + sx * sy * cz;
returnMatrix->_13 = -sy * cx;
returnMatrix->_14 = 0.0f;
returnMatrix->_21 = -cx * sz;
returnMatrix->_22 = cx * cz;
returnMatrix->_23 = sx;
returnMatrix->_24 = 0.0f;
returnMatrix->_31 = sy * cz + sx * cy * sz;
returnMatrix->_32 = sy * sz - sx * cy * cz;
returnMatrix->_33 = cx * cy;
returnMatrix->_34 = 0.0f;
returnMatrix->_41 = 0.0f;
returnMatrix->_42 = 0.0f;
returnMatrix->_43 = 0.0f;
returnMatrix->_44 = 1.0f;
}
//-----------------------------------------------------------------------------
// Name: SetupMatrices()
// Desc: Sets up the world, view, and projection transform matrices.
//-----------------------------------------------------------------------------
VOIDSetupMatrices()
{
// 旋转
D3DXMATRIXA16 matWorld;
D3DXMatrixIdentity( &matWorld );
//根据x轴和y轴移动距离旋转
setupRotate(&matWorld,D3DXToRadian(g_fSpinX),D3DXToRadian(g_fSpinY),0.0f);
g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
// 摄像机的位置
D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5.0f );
D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
D3DXMATRIXA16 matView;
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
// 设置视锥体大小
D3DXMATRIXA16 matProj;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f );
g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
}
//-----------------------------------------------------------------------------
// Name: SetupLights()
// Desc: Sets up the Lights and materials for the scene.
//-----------------------------------------------------------------------------
VOIDSetupLights()
{
// 初始化一个材料
D3DMATERIAL9 mtrl;
ZeroMemory( &mtrl,sizeof(D3DMATERIAL9) );
mtrl.Diffuse = mtrl.Ambient = D3DXCOLOR(1.0f,1.0f,0.0f,1.0f);//材质有漫射和环境光的设置，都为黄色
g_pd3dDevice->SetMaterial( &mtrl );
// 初始化一个白色的方向光
///*
D3DXVECTOR3 vecDir;
D3DLIGHT9 light;
ZeroMemory( &light,sizeof(D3DLIGHT9) );
light.Type = D3DLIGHT_DIRECTIONAL;//方向光
light.Diffuse = D3DXCOLOR(1.0f,1.0f,1.0f,1.0f);//设置光源的漫射光颜色为白色
light.Direction = D3DXVECTOR3(0.0f,0.0f,1.0f);//光的传播方向平行z轴
light.Range = 1000.0f;
g_pd3dDevice->SetLight( 0, &light );
g_pd3dDevice->LightEnable( 0, TRUE );
g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, TRUE );
//*/
// Finally, turn on some ambient light.
g_pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0x00202020 );
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
VOIDRender()
{
// 背景为蓝色
g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,
D3DCOLOR_XRGB(0,0,255), 1.0f, 0 );
// Begin the scene
if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
{
// 茶壶的材料颜色也定义在这个函数中
SetupLights();
// Setup the world, view, and projection matrices
SetupMatrices();
// Render the vertex buffer contents
g_pd3dDevice->SetStreamSource( 0, g_pVB, 0,sizeof(CUSTOMVERTEX) );
g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
//创建一个茶壶
//Objects = 0;
D3DXMATRIX Worlds;
D3DXCreateTeapot(g_pd3dDevice, &Objects, 0);
Objects->DrawSubset(0);
Objects->Release();
Objects = 0;
// End the scene
g_pd3dDevice->EndScene();
}
// Present the backbuffer contents to the display
g_pd3dDevice->Present( NULL, NULL, NULL, NULL );
//Objects->Release();
}
//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
LRESULTWINAPI MsgProc( HWNDhWnd, UINT msg, WPARAM wParam,LPARAM lParam )
{
staticPOINT ptLastMousePosit;
staticPOINT ptCurrentMousePosit;
staticbool bMousing;
switch( msg )
{
caseWM_DESTROY:
Cleanup();
PostQuitMessage( 0 );
return0;
caseWM_LBUTTONDOWN: // 当鼠标左键按下时，记录当前的位置（屏幕坐标），并设置按下标志
{
ptLastMousePosit.x = ptCurrentMousePosit.x = LOWORD (lParam);
ptLastMousePosit.y = ptCurrentMousePosit.y = HIWORD (lParam);
bMousing =true;
}
break;
caseWM_LBUTTONUP:
{
bMousing =false;
}
break;
caseWM_MOUSEMOVE: // 鼠标移动时，保存X/Y轴的移动距离
{
ptCurrentMousePosit.x = LOWORD (lParam);
ptCurrentMousePosit.y = HIWORD (lParam);
if( bMousing )
{
g_fSpinX -= (ptCurrentMousePosit.x - ptLastMousePosit.x);
g_fSpinY -= (ptCurrentMousePosit.y - ptLastMousePosit.y);
}
ptLastMousePosit.x = ptCurrentMousePosit.x;
ptLastMousePosit.y = ptCurrentMousePosit.y;
}
break;
}
returnDefWindowProc( hWnd, msg, wParam, lParam );
}
//-----------------------------------------------------------------------------
// Name: WinMain()
// Desc: The application's entry point
//-----------------------------------------------------------------------------
INTWINAPI WinMain( HINSTANCEhInst, HINSTANCE,LPSTR, INT )
{
// Register the window class
WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,
GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
'D3D Tutorial', NULL };
RegisterClassEx( &wc );
// Create the application's window
HWNDhWnd = CreateWindow( 'D3D Tutorial','D3D Tutorial 04: Lights',
WS_OVERLAPPEDWINDOW, 100, 100, 300, 300,
GetDesktopWindow(), NULL, wc.hInstance, NULL );
// Initialize Direct3D
if( SUCCEEDED( InitD3D( hWnd ) ) )
{
// Show the window
ShowWindow( hWnd, SW_SHOWDEFAULT );
UpdateWindow( hWnd );
// Enter the message loop
MSG msg;
ZeroMemory( &msg,sizeof(msg) );
while( msg.message!=WM_QUIT )
{
if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
else
Render();
}
}
UnregisterClass('D3D Tutorial', wc.hInstance );
return0;
}
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