PICS.rar_DDA_二维变换_图形学_扫描线 种子填充_计算机图形学

#include "windows.h" #include "resource.h" #include "draw.h" LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpcmdLine,int nCmdShow) { static TCHAR szAppName[]=TEXT("计算机图形学"); static TCHAR szClassName[]=TEXT("计算机图形学"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style=CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc=WndProc; wndclass.cbClsExtra=0; wndclass.cbWndExtra=0; wndclass.hInstance=hInstance; wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION); wndclass.hCursor=LoadCursor(NULL,IDC_ARROW); wndclass.hbrBackground=(HBRUSH)GetStockObject(GRAY_BRUSH); wndclass.lpszMenuName="IDR_MENU"; wndclass.lpszClassName=szClassName; if (!RegisterClass(&wndclass)) { MessageBox(NULL,TEXT("ERROR"),TEXT("ERROR"),MB_ICONSTOP); return 0; } hwnd =CreateWindow(szAppName,szClassName,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL, hInstance,NULL); ShowWindow(hwnd,nCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return (int)msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam) { HDC hdc; static POINT apt[4]; PAINTSTRUCT ps; switch(message) { case WM_CREATE: return 0; case WM_PAINT: if (DrawMode==DRAWNULL) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); EndPaint(hwnd,&ps); return 0; } if (DrawMode== DRAWDDALINE) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); SetColor(RGB(255,0,0),hdc); DDALine(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode== DRAWBRESENHAMLINE) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); SetColor(RGB(255,0,0),hdc); BresenhamLine(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWBEZIER) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); SetColor(RGB(255,0,0),hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWCIRCEL) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); DDACircel(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWCIRCELNEW) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); BresenhamCircle(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWSEED) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); Seed_Fill_Draw(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWHERMIT) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); HermitCurve(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWCARDINAL) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); CardinalCurve(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWSCANLINE) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); Scanline_seed_fill_draw(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWB) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); B_spline(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAW2DTURN) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); SetColor(RGB(255,0,0),hdc); TextOut(hdc,10,10,TEXT("正常直线"),8); DDALine(hdc); TextOut(hdc,87,204,TEXT("移位"),4); DDALineMove(hdc); TextOut(hdc,400,300,TEXT("缩放加旋转"),10); DDALineRotate(hdc); EndPaint(hwnd,&ps); return 0; } if (DrawMode==DRAWSELFBEZIER) { DoInvalidate(hwnd,TRUE); hdc=BeginPaint(hwnd,&ps); SelfBezier(hdc); EndPaint(hwnd,&ps); return 0; } return 0; case WM_DESTROY: PostQuitMessage(0); return 0; case WM_LBUTTONDOWN: case WM_RBUTTONDOWN: case WM_MOUSEMOVE: if (DrawMode==DRAWBEZIER) { if(wParam & MK_LBUTTON || wParam & MK_RBUTTON) { hdc = GetDC(hwnd); SetColor(RGB(128,128,128),hdc); DrawBezier(hdc, apt); if(wParam & MK_LBUTTON) { apt[1].x = LOWORD(lParam); apt[1].y = HIWORD(lParam); } if(wParam & MK_RBUTTON) { apt[2].x = LOWORD(lParam); apt[2].y = HIWORD(lParam); } SetColor(RGB(255,0,0),hdc); DrawBezier(hdc, apt); ReleaseDC(hwnd, hdc); } } return 0; case WM_COMMAND: switch(LOWORD(wParam)) { case ID_SYSTEM_AUTHOR: MessageBox(hwnd,Authorname,TEXT("Authors"),64); return 0; case ID_LINE_DDA: DrawMode=DRAWDDALINE; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_LINE_BRESENHAM: DrawMode=DRAWBRESENHAMLINE; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_FILL_SEED: DrawMode=DRAWSEED; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_FILL_SCANLINE: DrawMode=DRAWSCANLINE; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CIRCEL_DDA: DrawMode=DRAWCIRCEL; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CIRCEL_OTHER: DrawMode=DRAWCIRCELNEW; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_DRAW_NULL: DrawMode=DRAWNULL; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CURVE_CARDINAL: DrawMode=DRAWCARDINAL; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CURVE_HERMIT: DrawMode=DRAWHERMIT; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CURVE_BEZIER: DrawMode=DRAWBEZIER; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CURVE_B: DrawMode=DRAWB; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_DRAW_2DTURN: DrawMode=DRAW2DTURN; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; case ID_CURVE_SELFBEZIER: DrawMode=DRAWSELFBEZIER; PostMessage(hwnd,WM_PAINT,wParam,lParam); return 0; } } return DefWindowProc(hwnd,message,wParam,lParam); }