Hey
This is a project ive been working on for the past few days.
I am a begginer to OpenGL.
This has been boggling my mind.
When i run my program the triangle that moves with the arrrow keys move nice and smooth and quickly, but the triangle that moves with the NUM pad is chopped up and slow?
Why is this.
Please help!
Thanks
Here is the WHOLE code
#define WINDOWS_LEAN_AND_MEAN
#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glaux.h>
HWND hwnd = NULL;//global handle to our window
HINSTANCE hInstance;//instance of application
HGLRC hRC = NULL;//Rendering Context
HDC hDC = NULL;//Device Context
bool fullscreen;
bool keys[256];
bool color = false;
bool antialias = false;
bool FOne = false;
float translateXTriOne=0.0f;
float translateYTriOne=0.0f;
float translateYTriTwo=0.0f;
float translateXTriTwo=0.0f;
float scaleX=1.0f;
float scaleY=1.0f;
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
void SetupPixelFormat(HDC hDC);
void KillGLWindow();
void RenderScene();
void KeyCheck();
void SetUpGL();
void SetupPixelFormat(HDC hDC)
{
int nPixelFormat;
static PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0 };
nPixelFormat = ChoosePixelFormat(hDC, &pfd);
SetPixelFormat(hDC, nPixelFormat, &pfd);
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int height, width;
switch(message)
{
case WM_CREATE:
hDC = GetDC(hwnd);
SetupPixelFormat(hDC);
hRC = wglCreateContext(hDC);
wglMakeCurrent(hDC, hRC);
return 0;
break;
case WM_KEYDOWN:
keys[wParam] = true;
return 0;
break;
case WM_KEYUP:
keys[wParam] = false;
if(!keys[VK_F1])
FOne = false;
return 0;
break;
case WM_CLOSE:
KillGLWindow();
return 0;
break;
case WM_SIZE:
height = HIWORD(lParam);
width = LOWORD(lParam);
if (height == 0)
{
height = 1;
}
glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,1.0f,1000.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
return 0;
break;
default:
break;
}
return (DefWindowProc(hwnd,message,wParam,lParam));
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
WNDCLASSEX windowClass;
MSG msg;
bool done;
DWORD dwExStyle;
DWORD dwStyle;
RECT windowRect;
int width = 800;
int height = 600;
int bits = 32;
if(MessageBox(NULL,"FullScreen?","FullScreen?",MB_YESNO)==IDYES)
{
fullscreen = true;
}
windowRect.top = (long)0;
windowRect.left = (long)0;
windowRect.bottom = (long)height;
windowRect.right = (long)width;
windowClass.cbClsExtra = 0;
windowClass.cbSize = sizeof(WNDCLASSEX);
windowClass.cbWndExtra = 0;
windowClass.hbrBackground = NULL;
windowClass.hCursor = LoadCursor(NULL, IDC_ARROW);
windowClass.hIcon = NULL;
windowClass.hIconSm =NULL;
windowClass.hInstance = hInstance;
windowClass.lpfnWndProc = WndProc;
windowClass.lpszClassName = "MyClass";
windowClass.lpszMenuName = NULL;
windowClass.style = CS_HREDRAW|CS_VREDRAW;
if (!RegisterClassEx(&windowClass))
return 0;
if (fullscreen)
{
DEVMODE dmScreenSettings;
memset(&dmScreenSettings,0,sizeof(dmScreenSettings));
dmScreenSettings.dmSize = sizeof(dmScreenSettings);
dmScreenSettings.dmPelsWidth = width;
dmScreenSettings.dmPelsHeight = height;
dmScreenSettings.dmBitsPerPel = bits;
dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;
if (ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
{
MessageBox(NULL, "Display mode failed", NULL, MB_OK);
fullscreen=false;
}
}
if (fullscreen)
{
dwExStyle=WS_EX_APPWINDOW;
dwStyle=WS_POPUP;
ShowCursor(false);
}
else
{
dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
dwStyle=WS_OVERLAPPEDWINDOW;
}
AdjustWindowRectEx(&windowRect,dwStyle,false,dwExStyle);
hwnd = CreateWindowEx(NULL,
"MyClass",
"Matt Janas",
dwStyle | WS_CLIPCHILDREN |
WS_CLIPSIBLINGS|WS_MAXIMIZE,
0, 0,
windowRect.right - windowRect.left,
windowRect.bottom - windowRect.top,
NULL,
NULL,
hInstance,
NULL);
if(!hwnd)
return 0;
ShowWindow(hwnd,SW_SHOW);
UpdateWindow(hwnd);
done = false;
while(!done)
{
PeekMessage(&msg,hwnd,NULL,NULL, PM_REMOVE);
if (msg.message == WM_QUIT)
{
done = true;
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
KeyCheck();
RenderScene();
SwapBuffers(hDC);
}
if (fullscreen)
{
ChangeDisplaySettings(NULL,0);
ShowCursor(true);
}
return msg.wParam;
}
void KillGLWindow()
{
wglMakeCurrent(hDC,NULL);
wglDeleteContext(hRC);
PostQuitMessage(0);
}
void RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();
glTranslatef(translateXTriTwo,translateYTriTwo,-10.0f);
glBegin(GL_TRIANGLES);
glVertex3f(0.0f,2.0f,0.0f);
glVertex3f(2.0f,-2.0,0.0f);
glVertex3f(-2.0f,-2.0f,0.0f);
glEnd();
glPopMatrix();
glPushMatrix();
glTranslatef(translateXTriOne,translateYTriOne,-10.0f);
glScalef(scaleX,scaleY,1.0f);
glBegin(GL_TRIANGLES);
glVertex3f(0.0f,2.0f,0.0f);
glVertex3f(2.0f,-2.0f,0.0f);
glVertex3f(-2.0f,-2.0f,0.0f);
glEnd();
glPopMatrix();
}
void KeyCheck()
{
if(keys[VK_ESCAPE])
{
keys[VK_ESCAPE] = false;
PostQuitMessage(0);
}
if(keys[VK_F1] && !FOne)
{
if(!color)
{
FOne = true;
glColor3f(0.0f,1.0f,0.0f);
color = !color;
}
else
{
FOne = true;
glColor3f(1.0,1.0,1.0);
color = !color;
}
}
if(keys[VK_NUMPAD8])
{
keys[VK_BACK] = false;
if(!(translateYTriTwo == 3.0f))
{
translateYTriTwo += 0.5f;
}
}
if(keys[VK_NUMPAD2])
{
keys[VK_NUMPAD2] = false;
if(!(translateYTriTwo == -3.0f))
{
translateYTriTwo -= 0.5f;
}
}
if(keys[VK_NUMPAD4])
{
keys[VK_NUMPAD4] = false;
if(!(translateXTriTwo == -4.0f))
{
translateXTriTwo -= 0.5f;
}
}
if(keys[VK_NUMPAD6])
{
keys[VK_NUMPAD6] = false;
if(!(translateXTriTwo == 4.0f))
{
translateXTriTwo += 0.5f;
}
}
if(keys[VK_ADD])
{
keys[VK_ADD] = false;
scaleX += 0.05f;
scaleY += 0.05f;
}
if(keys[VK_SUBTRACT])
{
keys[VK_SUBTRACT] = false;
scaleX -= 0.05f;
scaleY -= 0.05f;
}
if(keys[VK_UP])
{
keys[VK_UP] = false;
if(!(translateYTriOne == 3.0f))
{
translateYTriOne += 0.5f;
}
}
if(keys[VK_DOWN])
{
keys[VK_DOWN] = false;
if(!(translateYTriOne == -3.0f))
{
translateYTriOne -= 0.5f;
}
}
if(keys[VK_LEFT])
{
keys[VK_LEFT] = false;
if(!(translateXTriOne == -4.0f))
{
translateXTriOne -= 0.5f;
}
}
if(keys[VK_RIGHT])
{
keys[VK_RIGHT] = false;
if(!(translateXTriOne == 4.0f))
{
translateXTriOne += 0.5f;
}
}
}
void SetUpGL()
{
}
lol
