423 lines
10 KiB
C++
423 lines
10 KiB
C++
|
/*
|
||
|
|
* Example of a Windows OpenGL program.
|
||
|
|
* The OpenGL code is the same as that used in
|
||
|
|
* the X Window System sample
|
||
|
|
*/
|
||
|
|
#include <windows.h>
|
||
|
|
#include <GL/gl.h>
|
||
|
|
//#include <GL/glu.h>
|
||
|
|
|
||
|
|
/* Windows globals, defines, and prototypes */
|
||
|
|
CHAR szAppName[]="Win OpenGL";
|
||
|
|
HWND ghWnd;
|
||
|
|
HDC ghDC;
|
||
|
|
HGLRC ghRC;
|
||
|
|
|
||
|
|
#define SWAPBUFFERS SwapBuffers(ghDC)
|
||
|
|
#define BLACK_INDEX 0
|
||
|
|
#define RED_INDEX 13
|
||
|
|
#define GREEN_INDEX 14
|
||
|
|
#define BLUE_INDEX 16
|
||
|
|
#define WIDTH 300
|
||
|
|
#define HEIGHT 200
|
||
|
|
|
||
|
|
LONG WINAPI MainWndProc (HWND, UINT, WPARAM, LPARAM);
|
||
|
|
BOOL bSetupPixelFormat(HDC);
|
||
|
|
|
||
|
|
/* OpenGL globals, defines, and prototypes */
|
||
|
|
GLfloat latitude, longitude, latinc, longinc;
|
||
|
|
GLdouble radius;
|
||
|
|
|
||
|
|
#define GLOBE 1
|
||
|
|
#define CYLINDER 2
|
||
|
|
#define CONE 3
|
||
|
|
|
||
|
|
GLvoid resize(GLsizei, GLsizei);
|
||
|
|
GLvoid initializeGL(GLsizei, GLsizei);
|
||
|
|
GLvoid drawScene(GLvoid);
|
||
|
|
void polarView( GLdouble, GLdouble, GLdouble, GLdouble);
|
||
|
|
|
||
|
|
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
|
||
|
|
{
|
||
|
|
MSG msg;
|
||
|
|
WNDCLASS wndclass;
|
||
|
|
|
||
|
|
/* Register the frame class */
|
||
|
|
wndclass.style = 0;
|
||
|
|
wndclass.lpfnWndProc = (WNDPROC)MainWndProc;
|
||
|
|
wndclass.cbClsExtra = 0;
|
||
|
|
wndclass.cbWndExtra = 0;
|
||
|
|
wndclass.hInstance = hInstance;
|
||
|
|
wndclass.hIcon = LoadIcon (hInstance, szAppName);
|
||
|
|
wndclass.hCursor = LoadCursor (NULL,IDC_ARROW);
|
||
|
|
wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
|
||
|
|
wndclass.lpszMenuName = szAppName;
|
||
|
|
wndclass.lpszClassName = szAppName;
|
||
|
|
|
||
|
|
DWORD r0 = RegisterClass (&wndclass);
|
||
|
|
if (!r0) return FALSE;
|
||
|
|
|
||
|
|
/* Create the frame */
|
||
|
|
ghWnd = CreateWindow (szAppName,
|
||
|
|
"Generic OpenGL Sample",
|
||
|
|
WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE,
|
||
|
|
CW_USEDEFAULT,
|
||
|
|
CW_USEDEFAULT,
|
||
|
|
WIDTH,
|
||
|
|
HEIGHT,
|
||
|
|
NULL,
|
||
|
|
NULL,
|
||
|
|
hInstance,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
/* make sure window was created */
|
||
|
|
if (!ghWnd)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
/* show and update main window */
|
||
|
|
ShowWindow (ghWnd, nCmdShow);
|
||
|
|
|
||
|
|
UpdateWindow (ghWnd);
|
||
|
|
|
||
|
|
/* animation loop */
|
||
|
|
while (1) {
|
||
|
|
/*
|
||
|
|
* Process all pending messages
|
||
|
|
*/
|
||
|
|
|
||
|
|
while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) == TRUE)
|
||
|
|
{
|
||
|
|
if (GetMessage(&msg, NULL, 0, 0) )
|
||
|
|
{
|
||
|
|
TranslateMessage(&msg);
|
||
|
|
DispatchMessage(&msg);
|
||
|
|
} else {
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
drawScene();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* main window procedure */
|
||
|
|
LONG WINAPI MainWndProc (
|
||
|
|
HWND hWnd,
|
||
|
|
UINT uMsg,
|
||
|
|
WPARAM wParam,
|
||
|
|
LPARAM lParam)
|
||
|
|
{
|
||
|
|
LONG lRet = 1;
|
||
|
|
PAINTSTRUCT ps;
|
||
|
|
RECT rect;
|
||
|
|
|
||
|
|
switch (uMsg) {
|
||
|
|
|
||
|
|
case WM_CREATE:
|
||
|
|
ghDC = GetDC(hWnd);
|
||
|
|
if (!bSetupPixelFormat(ghDC))
|
||
|
|
PostQuitMessage (0);
|
||
|
|
|
||
|
|
ghRC = wglCreateContext(ghDC);
|
||
|
|
wglMakeCurrent(ghDC, ghRC);
|
||
|
|
GetClientRect(hWnd, &rect);
|
||
|
|
initializeGL(rect.right, rect.bottom);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WM_PAINT:
|
||
|
|
BeginPaint(hWnd, &ps);
|
||
|
|
EndPaint(hWnd, &ps);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WM_SIZE:
|
||
|
|
GetClientRect(hWnd, &rect);
|
||
|
|
resize(rect.right, rect.bottom);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WM_CLOSE:
|
||
|
|
if (ghRC)
|
||
|
|
wglDeleteContext(ghRC);
|
||
|
|
if (ghDC)
|
||
|
|
ReleaseDC(hWnd, ghDC);
|
||
|
|
ghRC = 0;
|
||
|
|
ghDC = 0;
|
||
|
|
|
||
|
|
DestroyWindow (hWnd);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WM_DESTROY:
|
||
|
|
if (ghRC)
|
||
|
|
wglDeleteContext(ghRC);
|
||
|
|
if (ghDC)
|
||
|
|
ReleaseDC(hWnd, ghDC);
|
||
|
|
|
||
|
|
PostQuitMessage (0);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WM_KEYDOWN:
|
||
|
|
switch (wParam) {
|
||
|
|
case VK_LEFT:
|
||
|
|
longinc += 0.5F;
|
||
|
|
break;
|
||
|
|
case VK_RIGHT:
|
||
|
|
longinc -= 0.5F;
|
||
|
|
break;
|
||
|
|
case VK_UP:
|
||
|
|
latinc += 0.5F;
|
||
|
|
break;
|
||
|
|
case VK_DOWN:
|
||
|
|
latinc -= 0.5F;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
default:
|
||
|
|
lRet = (LONG)DefWindowProc (hWnd, uMsg, wParam, lParam);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return lRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL bSetupPixelFormat(HDC hdc)
|
||
|
|
{
|
||
|
|
PIXELFORMATDESCRIPTOR pfd, *ppfd;
|
||
|
|
int pixelformat;
|
||
|
|
|
||
|
|
ppfd = &pfd;
|
||
|
|
|
||
|
|
ppfd->nSize = sizeof(PIXELFORMATDESCRIPTOR);
|
||
|
|
ppfd->nVersion = 1;
|
||
|
|
ppfd->dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL |
|
||
|
|
PFD_DOUBLEBUFFER;
|
||
|
|
ppfd->dwLayerMask = PFD_MAIN_PLANE;
|
||
|
|
ppfd->iPixelType = PFD_TYPE_COLORINDEX;
|
||
|
|
ppfd->cColorBits = 8;
|
||
|
|
ppfd->cDepthBits = 16;
|
||
|
|
ppfd->cAccumBits = 0;
|
||
|
|
ppfd->cStencilBits = 0;
|
||
|
|
|
||
|
|
pixelformat = ChoosePixelFormat(hdc, ppfd);
|
||
|
|
|
||
|
|
if ( (pixelformat = ChoosePixelFormat(hdc, ppfd)) == 0 )
|
||
|
|
{
|
||
|
|
MessageBox(NULL, "ChoosePixelFormat failed", "Error", MB_OK);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (SetPixelFormat(hdc, pixelformat, ppfd) == FALSE)
|
||
|
|
{
|
||
|
|
MessageBox(NULL, "SetPixelFormat failed", "Error", MB_OK);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* OpenGL code */
|
||
|
|
|
||
|
|
GLvoid resize( GLsizei width, GLsizei height )
|
||
|
|
{
|
||
|
|
GLfloat aspect;
|
||
|
|
|
||
|
|
glViewport( 0, 0, width, height );
|
||
|
|
|
||
|
|
aspect = (GLfloat) width / height;
|
||
|
|
|
||
|
|
glMatrixMode( GL_PROJECTION );
|
||
|
|
glLoadIdentity();
|
||
|
|
//gluPerspective( 45.0, aspect, 3.0, 7.0 );
|
||
|
|
//glMatrixMode( GL_MODELVIEW );
|
||
|
|
}
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
GLvoid createObjects()
|
||
|
|
{
|
||
|
|
GLUquadricObj *quadObj;
|
||
|
|
|
||
|
|
glNewList(GLOBE, GL_COMPILE);
|
||
|
|
quadObj = gluNewQuadric ();
|
||
|
|
gluQuadricDrawStyle (quadObj, GLU_LINE);
|
||
|
|
gluSphere (quadObj, 1.5, 16, 16);
|
||
|
|
glEndList();
|
||
|
|
|
||
|
|
glNewList(CONE, GL_COMPILE);
|
||
|
|
quadObj = gluNewQuadric ();
|
||
|
|
gluQuadricDrawStyle (quadObj, GLU_FILL);
|
||
|
|
gluQuadricNormals (quadObj, GLU_SMOOTH);
|
||
|
|
gluCylinder(quadObj, 0.3, 0.0, 0.6, 15, 10);
|
||
|
|
glEndList();
|
||
|
|
|
||
|
|
glNewList(CYLINDER, GL_COMPILE);
|
||
|
|
glPushMatrix ();
|
||
|
|
glRotatef ((GLfloat)90.0, (GLfloat)1.0, (GLfloat)0.0, (GLfloat)0.0);
|
||
|
|
glTranslatef ((GLfloat)0.0, (GLfloat)0.0, (GLfloat)-1.0);
|
||
|
|
quadObj = gluNewQuadric ();
|
||
|
|
gluQuadricDrawStyle (quadObj, GLU_FILL);
|
||
|
|
gluQuadricNormals (quadObj, GLU_SMOOTH);
|
||
|
|
gluCylinder (quadObj, 0.3, 0.3, 0.6, 12, 2);
|
||
|
|
glPopMatrix ();
|
||
|
|
glEndList();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
GLvoid initializeGL(GLsizei width, GLsizei height)
|
||
|
|
{
|
||
|
|
GLfloat maxObjectSize, aspect;
|
||
|
|
GLdouble near_plane, far_plane;
|
||
|
|
|
||
|
|
glClearIndex( (GLfloat)BLACK_INDEX);
|
||
|
|
glClearDepth( 1.0 );
|
||
|
|
|
||
|
|
glEnable(GL_DEPTH_TEST);
|
||
|
|
|
||
|
|
glMatrixMode( GL_PROJECTION );
|
||
|
|
aspect = (GLfloat) width / height;
|
||
|
|
//gluPerspective( 45.0, aspect, 3.0, 7.0 );
|
||
|
|
glMatrixMode( GL_MODELVIEW );
|
||
|
|
|
||
|
|
near_plane = 3.0;
|
||
|
|
far_plane = 7.0;
|
||
|
|
maxObjectSize = 3.0F;
|
||
|
|
radius = near_plane + maxObjectSize/2.0;
|
||
|
|
|
||
|
|
latitude = 0.0F;
|
||
|
|
longitude = 0.0F;
|
||
|
|
latinc = 6.0F;
|
||
|
|
longinc = 2.5F;
|
||
|
|
|
||
|
|
//createObjects();
|
||
|
|
}
|
||
|
|
|
||
|
|
void polarView(GLdouble radius_, GLdouble twist, GLdouble latitude_,
|
||
|
|
GLdouble longitude_)
|
||
|
|
{
|
||
|
|
glTranslated(0.0, 0.0, -radius_);
|
||
|
|
glRotated(-twist, 0.0, 0.0, 1.0);
|
||
|
|
glRotated(-latitude_, 1.0, 0.0, 0.0);
|
||
|
|
glRotated(longitude_, 0.0, 0.0, 1.0);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
GLvoid drawScene(GLvoid)
|
||
|
|
{
|
||
|
|
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
||
|
|
|
||
|
|
glPushMatrix();
|
||
|
|
|
||
|
|
latitude += latinc;
|
||
|
|
longitude += longinc;
|
||
|
|
|
||
|
|
polarView( radius, 0, latitude, longitude );
|
||
|
|
|
||
|
|
glIndexi(RED_INDEX);
|
||
|
|
glCallList(CONE);
|
||
|
|
|
||
|
|
glIndexi(BLUE_INDEX);
|
||
|
|
glCallList(GLOBE);
|
||
|
|
|
||
|
|
glIndexi(GREEN_INDEX);
|
||
|
|
glPushMatrix();
|
||
|
|
glTranslatef(0.8F, -0.65F, 0.0F);
|
||
|
|
glRotatef(30.0F, 1.0F, 0.5F, 1.0F);
|
||
|
|
glCallList(CYLINDER);
|
||
|
|
glPopMatrix();
|
||
|
|
|
||
|
|
glPopMatrix();
|
||
|
|
|
||
|
|
SWAPBUFFERS;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#include "windows.h"
|
||
|
|
#include <gl/gl.h>
|
||
|
|
|
||
|
|
# define assert_always (*((volatile int*)0) = 0xFFFF)
|
||
|
|
|
||
|
|
LRESULT CALLBACK
|
||
|
|
window_event_handler(HWND h, UINT m, WPARAM w, LPARAM l)
|
||
|
|
{
|
||
|
|
switch (m)
|
||
|
|
{
|
||
|
|
case WM_CLOSE: { return DefWindowProc(h, m, w, l); } break;
|
||
|
|
case WM_DESTROY: { return DefWindowProc(h, m, w, l); } break;
|
||
|
|
default: { return DefWindowProc(h, m, w, l); } break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
INT WINAPI
|
||
|
|
WinMain(
|
||
|
|
HINSTANCE hInstance,
|
||
|
|
HINSTANCE hPrevInstance,
|
||
|
|
PSTR lpCmdLine,
|
||
|
|
INT nCmdShow)
|
||
|
|
{
|
||
|
|
WNDCLASSEX window_class = {0};
|
||
|
|
HWND window_handle = NULL;
|
||
|
|
HDC dc = NULL;
|
||
|
|
HGLRC rc = NULL;
|
||
|
|
|
||
|
|
window_class = {};
|
||
|
|
window_class.cbSize = sizeof(WNDCLASSEX);
|
||
|
|
window_class.style = CS_HREDRAW | CS_VREDRAW;
|
||
|
|
window_class.lpfnWndProc = window_event_handler;
|
||
|
|
window_class.cbClsExtra = 0;
|
||
|
|
window_class.cbWndExtra = 0;
|
||
|
|
window_class.hInstance = hInstance;
|
||
|
|
window_class.hIcon = NULL;
|
||
|
|
window_class.hCursor = NULL;
|
||
|
|
window_class.hbrBackground = NULL;
|
||
|
|
window_class.lpszMenuName = 0;
|
||
|
|
window_class.lpszClassName = "my_window_class"; // TODO(PS): does this need to be different from the window itself?
|
||
|
|
window_class.hIconSm = NULL;
|
||
|
|
|
||
|
|
if (RegisterClassEx(&window_class))
|
||
|
|
{
|
||
|
|
window_handle = CreateWindowEx(
|
||
|
|
0,
|
||
|
|
window_class.lpszClassName,
|
||
|
|
"my_window",
|
||
|
|
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
|
||
|
|
CW_USEDEFAULT,
|
||
|
|
CW_USEDEFAULT,
|
||
|
|
600,
|
||
|
|
400,
|
||
|
|
0,
|
||
|
|
0,
|
||
|
|
hInstance,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
dc = GetDC(window_handle);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
assert_always;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Setup pixel format
|
||
|
|
PIXELFORMATDESCRIPTOR pixel_format_desc = { 0 };
|
||
|
|
pixel_format_desc.nSize = sizeof(PIXELFORMATDESCRIPTOR);
|
||
|
|
pixel_format_desc.nVersion = 1;
|
||
|
|
pixel_format_desc.dwFlags = (
|
||
|
|
PFD_SUPPORT_OPENGL |
|
||
|
|
PFD_DRAW_TO_WINDOW |
|
||
|
|
PFD_DOUBLEBUFFER
|
||
|
|
);
|
||
|
|
pixel_format_desc.cColorBits = 32;
|
||
|
|
pixel_format_desc.cAlphaBits = 8;
|
||
|
|
pixel_format_desc.cDepthBits = 0;
|
||
|
|
pixel_format_desc.iPixelType = PFD_TYPE_RGBA;
|
||
|
|
pixel_format_desc.dwLayerMask = PFD_MAIN_PLANE;
|
||
|
|
|
||
|
|
int pixel_fmt = ChoosePixelFormat(dc, &pixel_format_desc);
|
||
|
|
if (!pixel_fmt) { assert_always; }
|
||
|
|
if (!SetPixelFormat(dc, pixel_fmt, &pixel_format_desc))
|
||
|
|
{
|
||
|
|
assert_always;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create rendering context
|
||
|
|
rc = wglCreateContext(dc);
|
||
|
|
wglMakeCurrent(dc, rc);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif
|