Sprite_锚点与变换

#include "Utility.h" HWND g_hWnd = 0; HINSTANCE g_hInstance = 0; LRESULT CALLBACK WndProc(HWND hWnd ,UINT uMsg, WPARAM wParam,LPARAM lParam); LPDIRECT3D9 g_pD3D = nullptr; LPDIRECT3DDEVICE9 g_pDevice = nullptr; LPD3DXSPRITE g_pSprite = nullptr; LPDIRECT3DTEXTURE9 g_pTexture = nullptr; D3DXIMAGE_INFO g_ImageInfo; //用来存储矩形区域的容器 vector<RECT*> g_vecRects; float g_fDeltaTime = 1.0f; //矩阵：用来控制图片的平移、旋转、缩放变换 D3DXMATRIX g_matWorld; //世界坐标系下的矩阵（4x4） D3DXVECTOR2 g_playerPos; LPDIRECT3DTEXTURE9 g_pCarrot = nullptr; //作业：利用SetTimer实现每1秒切换1张图片的功能 VOID onInitGame() { D3DXCreateSprite(g_pDevice, &g_pSprite); ZeroMemory(&g_ImageInfo, sizeof(g_ImageInfo)); D3DXCreateTextureFromFileEx( g_pDevice, TEXT("Resources\\Textures\\blocks9.png"), D3DX_FROM_FILE,D3DX_FROM_FILE, 0,0,D3DFMT_UNKNOWN,D3DPOOL_MANAGED, D3DX_FILTER_LINEAR,D3DX_FILTER_LINEAR, D3DCOLOR_XRGB(254,253,255),&g_ImageInfo,nullptr,&g_pTexture); D3DXCreateTextureFromFile(g_pDevice, TEXT("Resources\\Textures\\carrot.png"), &g_pCarrot); INT iTileWidth = g_ImageInfo.Width / 3; //单元格的宽（Tile:单元格） INT iTileHeight = g_ImageInfo.Height / 3; //单元格的高（Tile:单元格） for (int i = 0; i < 3; ++i) { for (int j = 0; j < 3; ++j) { RECT * pRect = new RECT; SetRect(pRect, iTileWidth * j , iTileHeight * i, iTileWidth * j + iTileWidth, iTileHeight * i + iTileHeight ); g_vecRects.push_back(pRect); } } //将矩阵置为单位矩阵 D3DXMatrixIdentity(&g_matWorld); g_playerPos = D3DXVECTOR2(200, 100); } VOID onInit() { g_pD3D = Direct3DCreate9(D3D_SDK_VERSION); D3DDISPLAYMODE d3ddm; ZeroMemory(&d3ddm, sizeof(D3DDISPLAYMODE)); g_pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm); D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(d3dpp)); d3dpp.BackBufferCount = 1; d3dpp.Windowed = true; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, g_hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pDevice); onInitGame(); } VOID onLogic(float fElapsedTime) { } VOID onRender(float fElapsedTime) { g_pDevice->Clear(0, nullptr, D3DCLEAR_TARGET, D3DCOLOR_XRGB(123, 234, 123), 1.0f, 0); g_pDevice->BeginScene(); g_pSprite->Begin(D3DXSPRITE_ALPHABLEND); //static vector<RECT*>::iterator iter = g_vecRects.begin(); //g_pSprite->Draw( // g_pTexture, // *iter, //图片自身的矩形区域 // &D3DXVECTOR3(g_ImageInfo.Width/3/2,g_ImageInfo.Height/3/2, 0), //锚点 // &D3DXVECTOR3(400, 300, 0), //锚点在客户区的坐标位置 // D3DCOLOR_XRGB(255, 255, 255) // ); //g_pSprite->Draw( // g_pTexture, // *iter, //图片自身的矩形区域 // &D3DXVECTOR3(0,0,0), //锚点 // &D3DXVECTOR3(400,300,0), //锚点在客户区的坐标位置 // D3DCOLOR_XRGB(255,255,255) // ); //g_fDeltaTime -= fElapsedTime; //if (g_fDeltaTime <= 0.0f) //{ // ++iter; // if (iter == g_vecRects.end()) // iter = g_vecRects.begin(); // g_fDeltaTime = 1.0f; //} //2D图片的变换：Translation（平移），Rotation（旋转），Scale（缩放） //获得一个具有变换信息的矩阵 static float fAngle = 0.0f; fAngle += fElapsedTime*10; D3DXMatrixTransformation2D( &g_matWorld, //返回的矩阵 nullptr, //缩放的中心 0.0f, //影响缩放的因素 &D3DXVECTOR2(1.0f, 1.0f), //在X、Y方向的缩放量 &D3DXVECTOR2(0.0f, 0.0f), //旋转中心 fAngle, //旋转弧度 &g_playerPos//平移量 ); g_pSprite->SetTransform(&g_matWorld); g_pSprite->Draw( g_pTexture, nullptr, &D3DXVECTOR3(g_ImageInfo.Width / 2.0f, g_ImageInfo.Height / 2.0f, 0.0f), &D3DXVECTOR3(0.0f,0.0f,0.0f), 0xFFFFFFFF ); //----恢复渲染状态---- **************************** D3DXMatrixIdentity(&g_matWorld); g_pSprite->SetTransform(&g_matWorld); g_pSprite->Draw( g_pCarrot, nullptr, &D3DXVECTOR3(0.0f, 0.0f, 0.0f), &D3DXVECTOR3(0.0f, 0.0f, 0.0f), 0xFFFFFFFF ); g_pSprite->End(); g_pDevice->EndScene(); g_pDevice->Present(nullptr, nullptr, 0, nullptr); } VOID onDestroy() { Safe_Release(g_pTexture); Safe_Release(g_pSprite); Safe_Release(g_pDevice); Safe_Release(g_pD3D); } INT WINAPI WinMain( __in HINSTANCE hInstance, __in_opt HINSTANCE hPrevInstance, __in_opt LPSTR lpCmdLine, __in int nShowCmd ) { WNDCLASS wc; ZeroMemory(&wc,sizeof(wc)); wc.cbClsExtra = NULL; wc.cbWndExtra = NULL; wc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH); wc.hCursor = LoadCursor(0,IDC_ARROW); wc.hIcon = LoadIcon(0,IDI_APPLICATION); wc.hInstance = hInstance; wc.lpfnWndProc = WndProc; wc.lpszClassName = TEXT("Alibaba"); wc.lpszMenuName = NULL; wc.style = CS_HREDRAW | CS_VREDRAW; RegisterClass(&wc); g_hWnd = CreateWindow(wc.lpszClassName, TEXT("D3D_FirstApp"),WS_OVERLAPPEDWINDOW, 50,20,800,600,NULL,NULL,hInstance,NULL); if(g_hWnd) { g_hInstance = hInstance; onInit(); ShowWindow(g_hWnd,SW_SHOWNORMAL); UpdateWindow(g_hWnd); } MSG msg; ZeroMemory(&msg,sizeof(msg)); while ( msg.message!=WM_QUIT) { if(PeekMessage(&msg,NULL,0,0,PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage(&msg); } else { static DWORD dwTime = timeGetTime(); DWORD dwCurrentTime = timeGetTime(); DWORD dwElapsedTime = dwCurrentTime - dwTime; float fElapsedTime = dwElapsedTime * 0.001f; onLogic(fElapsedTime); onRender(fElapsedTime); if (dwElapsedTime < 1000 / 60) Sleep(1000 / 60 - dwElapsedTime); dwTime = dwCurrentTime; } } onDestroy(); UnregisterClass(wc.lpszClassName, hInstance); return 0; } LRESULT CALLBACK WndProc(HWND hWnd ,UINT uMsg, WPARAM wParam,LPARAM lParam) { switch(uMsg) { case WM_MOUSEMOVE: g_playerPos.x = LOWORD(lParam); g_playerPos.y = HIWORD(lParam); break; case WM_KEYDOWN: if(wParam == VK_ESCAPE) DestroyWindow(hWnd); break; case WM_CLOSE: DestroyWindow(hWnd); break; case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProc(hWnd,uMsg,wParam,lParam); }