D3D 虚拟漫游 摄像机

////////////////////////////////////////////////////////////////////////////////////////////////// // // File: d3dUtility.cpp // // Author: Frank Luna (C) All Rights Reserved // // System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0 // // Desc: Provides utility functions for simplifying common tasks. // ////////////////////////////////////////////////////////////////////////////////////////////////// #include "d3dUtility.h" // vertex formats const DWORD d3d::Vertex::FVF = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1; bool d3d::InitD3D( HINSTANCE hInstance, int width, int height, bool windowed, D3DDEVTYPE deviceType, IDirect3DDevice9** device) { // // Create the main application window. // WNDCLASS wc; wc.style = CS_HREDRAW | CS_VREDRAW; wc.lpfnWndProc = (WNDPROC)d3d::WndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(0, IDI_APPLICATION); wc.hCursor = LoadCursor(0, IDC_ARROW); wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wc.lpszMenuName = 0; wc.lpszClassName = "Direct3D9App"; if( !RegisterClass(&wc) ) { ::MessageBox(0, "RegisterClass() - FAILED", 0, 0); return false; } HWND hwnd = 0; hwnd = ::CreateWindow("Direct3D9App", "Direct3D9App", WS_EX_TOPMOST, 0, 0, width, height, 0 /*parent hwnd*/, 0 /* menu */, hInstance, 0 /*extra*/); if( !hwnd ) { ::MessageBox(0, "CreateWindow() - FAILED", 0, 0); return false; } ::ShowWindow(hwnd, SW_SHOW); ::UpdateWindow(hwnd); // // Init D3D: // HRESULT hr = 0; // Step 1: Create the IDirect3D9 object. IDirect3D9* d3d9 = 0; d3d9 = Direct3DCreate9(D3D_SDK_VERSION); if( !d3d9 ) { ::MessageBox(0, "Direct3DCreate9() - FAILED", 0, 0); return false; } // Step 2: Check for hardware vp. D3DCAPS9 caps; d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT, deviceType, &caps); int vp = 0; if( caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT ) vp = D3DCREATE_HARDWARE_VERTEXPROCESSING; else vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING; // Step 3: Fill out the D3DPRESENT_PARAMETERS structure. D3DPRESENT_PARAMETERS d3dpp; d3dpp.BackBufferWidth = width; d3dpp.BackBufferHeight = height; d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8; d3dpp.BackBufferCount = 1; d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE; d3dpp.MultiSampleQuality = 0; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.hDeviceWindow = hwnd; d3dpp.Windowed = windowed; d3dpp.EnableAutoDepthStencil = true; d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8; d3dpp.Flags = 0; d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT; d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Step 4: Create the device. hr = d3d9->CreateDevice( D3DADAPTER_DEFAULT, // primary adapter deviceType, // device type hwnd, // window associated with device vp, // vertex processing &d3dpp, // present parameters device); // return created device if( FAILED(hr) ) { // try again using a 16-bit depth buffer d3dpp.AutoDepthStencilFormat = D3DFMT_D16; hr = d3d9->CreateDevice( D3DADAPTER_DEFAULT, deviceType, hwnd, vp, &d3dpp, device); if( FAILED(hr) ) { d3d9->Release(); // done with d3d9 object ::MessageBox(0, "CreateDevice() - FAILED", 0, 0); return false; } } d3d9->Release(); // done with d3d9 object return true; } int d3d::EnterMsgLoop( bool (*ptr_display)(float timeDelta) ) { MSG msg; ::ZeroMemory(&msg, sizeof(MSG)); static float lastTime = (float)timeGetTime(); while(msg.message != WM_QUIT) { if(::PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) { ::TranslateMessage(&msg); ::DispatchMessage(&msg); } else { float currTime = (float)timeGetTime(); float timeDelta = (currTime - lastTime)*0.001f; ptr_display(timeDelta); lastTime = currTime; } } return msg.wParam; } D3DLIGHT9 d3d::InitDirectionalLight(D3DXVECTOR3* direction, D3DXCOLOR* color) { D3DLIGHT9 light; ::ZeroMemory(&light, sizeof(light)); light.Type = D3DLIGHT_DIRECTIONAL; light.Ambient = *color * 0.4f; light.Diffuse = *color; light.Specular = *color * 0.6f; light.Direction = *direction; return light; } D3DLIGHT9 d3d::InitPointLight(D3DXVECTOR3* position, D3DXCOLOR* color) { D3DLIGHT9 light; ::ZeroMemory(&light, sizeof(light)); light.Type = D3DLIGHT_POINT; light.Ambient = *color * 0.4f; light.Diffuse = *color; light.Specular = *color * 0.6f; light.Position = *position; light.Range = 1000.0f; light.Falloff = 1.0f; light.Attenuation0 = 1.0f; light.Attenuation1 = 0.0f; light.Attenuation2 = 0.0f; return light; } D3DLIGHT9 d3d::InitSpotLight(D3DXVECTOR3* position, D3DXVECTOR3* direction, D3DXCOLOR* color) { D3DLIGHT9 light; ::ZeroMemory(&light, sizeof(light)); light.Type = D3DLIGHT_SPOT; light.Ambient = *color * 0.4f; light.Diffuse = *color; light.Specular = *color * 0.6f; light.Position = *position; light.Direction = *direction; light.Range = 1000.0f; light.Falloff = 1.0f; light.Attenuation0 = 1.0f; light.Attenuation1 = 0.0f; light.Attenuation2 = 0.0f; light.Theta = 0.5f; light.Phi = 0.7f; return light; } D3DMATERIAL9 d3d::InitMtrl(D3DXCOLOR a, D3DXCOLOR d, D3DXCOLOR s, D3DXCOLOR e, float p) { D3DMATERIAL9 mtrl; mtrl.Ambient = a; mtrl.Diffuse = d; mtrl.Specular = s; mtrl.Emissive = e; mtrl.Power = p; return mtrl; } d3d::BoundingBox::BoundingBox() { // infinite small _min.x = d3d::INFINITY; _min.y = d3d::INFINITY; _min.z = d3d::INFINITY; _max.x = -d3d::INFINITY; _max.y = -d3d::INFINITY; _max.z = -d3d::INFINITY; } bool d3d::BoundingBox::isPointInside(D3DXVECTOR3& p) { if( p.x >= _min.x && p.y >= _min.y && p.z >= _min.z && p.x <= _max.x && p.y <= _max.y && p.z <= _max.z ) { return true; } else { return false; } } d3d::BoundingSphere::BoundingSphere() { _radius = 0.0f; } bool d3d::DrawBasicScene(IDirect3DDevice9* device, float scale) { static IDirect3DVertexBuffer9* floor = 0; static IDirect3DTexture9* tex = 0; static ID3DXMesh* pillar = 0; HRESULT hr = 0; if( device == 0 ) { if( floor && tex && pillar ) { // they already exist, destroy them d3d::Release<IDirect3DVertexBuffer9*>(floor); d3d::Release<IDirect3DTexture9*>(tex); d3d::Release<ID3DXMesh*>(pillar); } } else if( !floor && !tex && !pillar ) { // they don't exist, create them device->CreateVertexBuffer( 6 * sizeof(d3d::Vertex), 0, d3d::Vertex::FVF, D3DPOOL_MANAGED, &floor, 0); Vertex* v = 0; floor->Lock(0, 0, (void**)&v, 0); v[0] = Vertex(-20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[1] = Vertex(-20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f); v[2] = Vertex( 20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[3] = Vertex(-20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[4] = Vertex( 20.0f, -2.5f, 20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[5] = Vertex( 20.0f, -2.5f, -20.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f); floor->Unlock(); D3DXCreateCylinder(device, 0.5f, 0.5f, 5.0f, 20, 20, &pillar, 0); D3DXCreateTextureFromFile( device, "desert.bmp", &tex); } else { // // Pre-Render Setup // device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); device->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTE