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| #include <windows.h>
#include <gl\gl.h>
#include <gl\glu.h>
#include <vfw.h>
#include "NeHeGL.h"
#pragma comment( lib, "opengl32.lib" ) // Search For OpenGL32.lib While Linking
#pragma comment( lib, "glu32.lib" ) // Search For GLu32.lib While Linking
#pragma comment( lib, "vfw32.lib" ) // Search For VFW32.lib While Linking
#ifndef CDS_FULLSCREEN // CDS_FULLSCREEN Is Not Defined By Some
#define CDS_FULLSCREEN 4 // Compilers. By Defining It This Way,
#endif // We Can Avoid Errors
GL_Window* g_window;
Keys* g_keys;
// User Defined Variables
float angle; // Used For Rotation
int next; // Used For Animation
int frame=0; // Frame Counter
int effect; // Current Effect
bool sp; // Space Bar Pressed?
bool env=TRUE; // Environment Mapping (Default On)
bool ep; // 'E' Pressed?
bool bg=TRUE; // Background (Default On)
bool bp; // 'B' Pressed?
AVISTREAMINFO psi; // Pointer To A Structure Containing Stream Info
PAVISTREAM pavi; // Handle To An Open Stream
PGETFRAME pgf; // Pointer To A GetFrame Object
BITMAPINFOHEADER bmih; // Header Information For DrawDibDraw Decoding
long lastframe; // Last Frame Of The Stream
int width; // Video Width
int height; // Video Height
char *pdata; // Pointer To Texture Data
int mpf; // Will Hold Rough Milliseconds Per Frame
GLUquadricObj *quadratic; // Storage For Our Quadratic Objects
HDRAWDIB hdd; // Handle For Our Dib
HBITMAP hBitmap; // Handle To A Device Dependant Bitmap
HDC hdc = CreateCompatibleDC(0); // Creates A Compatible Device Context
unsigned char* data = 0; // Pointer To Our Resized Image
void flipIt(void* buffer) // Flips The Red And Blue Bytes (256x256)
{
void* b = buffer; // Pointer To The Buffer
__asm // Assembler Code To Follow
{
mov ecx, 256*256 // Counter Set To Dimensions Of Our Memory Block
mov ebx, b // Points ebx To Our Data (b)
label: // Label Used For Looping
mov al,[ebx+0] // Loads Value At ebx Into al
mov ah,[ebx+2] // Loads Value At ebx+2 Into ah
mov [ebx+2],al // Stores Value In al At ebx+2
mov [ebx+0],ah // Stores Value In ah At ebx
add ebx,3 // Moves Through The Data By 3 Bytes
dec ecx // Decreases Our Loop Counter
jnz label // If Not Zero Jump Back To Label
}
}
void OpenAVI(LPCSTR szFile) // Opens An AVI File (szFile)
{
TCHAR title[100]; // Will Hold The Modified Window Title
AVIFileInit(); // Opens The AVIFile Library
// Opens The AVI Stream
if (AVIStreamOpenFromFile(&pavi, szFile, streamtypeVIDEO, 0, OF_READ, NULL) !=0)
{
// An Error Occurred Opening The Stream
MessageBox (HWND_DESKTOP, "Failed To Open The AVI Stream", "Error", MB_OK | MB_ICONEXCLAMATION);
}
AVIStreamInfo(pavi, &psi, sizeof(psi)); // Reads Information About The Stream Into psi
width=psi.rcFrame.right-psi.rcFrame.left; // Width Is Right Side Of Frame Minus Left
height=psi.rcFrame.bottom-psi.rcFrame.top; // Height Is Bottom Of Frame Minus Top
lastframe=AVIStreamLength(pavi); // The Last Frame Of The Stream
mpf=AVIStreamSampleToTime(pavi,lastframe)/lastframe; // Calculate Rough Milliseconds Per Frame
bmih.biSize = sizeof (BITMAPINFOHEADER); // Size Of The BitmapInfoHeader
bmih.biPlanes = 1; // Bitplanes
bmih.biBitCount = 24; // Bits Format We Want (24 Bit, 3 Bytes)
bmih.biWidth = 256; // Width We Want (256 Pixels)
bmih.biHeight = 256; // Height We Want (256 Pixels)
bmih.biCompression = BI_RGB; // Requested Mode = RGB
hBitmap = CreateDIBSection (hdc, (BITMAPINFO*)(&bmih), DIB_RGB_COLORS, (void**)(&data), NULL, NULL);
SelectObject (hdc, hBitmap); // Select hBitmap Into Our Device Context (hdc)
pgf=AVIStreamGetFrameOpen(pavi, NULL); // Create The PGETFRAME Using Our Request Mode
if (pgf==NULL)
{
// An Error Occurred Opening The Frame
MessageBox (HWND_DESKTOP, "Failed To Open The AVI Frame", "Error", MB_OK | MB_ICONEXCLAMATION);
}
// Information For The Title Bar (Width / Height / Last Frame)
wsprintf (title, "NeHe's AVI Player: Width: %d, Height: %d, Frames: %d", width, height, lastframe);
SetWindowText(g_window->hWnd, title); // Modify The Title Bar
}
void GrabAVIFrame(int frame) // Grabs A Frame From The Stream
{
LPBITMAPINFOHEADER lpbi; // Holds The Bitmap Header Information
lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(pgf, frame); // Grab Data From The AVI Stream
pdata=(char *)lpbi+lpbi->biSize+lpbi->biClrUsed * sizeof(RGBQUAD); // Pointer To Data Returned By AVIStreamGetFrame
// Convert Data To Requested Bitmap Format
DrawDibDraw (hdd, hdc, 0, 0, 256, 256, lpbi, pdata, 0, 0, width, height, 0);
flipIt(data); // Swap The Red And Blue Bytes (GL Compatability)
// Update The Texture
glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 256, 256, GL_RGB, GL_UNSIGNED_BYTE, data);
}
void CloseAVI(void) // Properly Closes The Avi File
{
DeleteObject(hBitmap); // Delete The Device Dependant Bitmap Object
DrawDibClose(hdd); // Closes The DrawDib Device Context
AVIStreamGetFrameClose(pgf); // Deallocates The GetFrame Resources
AVIStreamRelease(pavi); // Release The Stream
AVIFileExit(); // Release The File
}
BOOL Initialize (GL_Window* window, Keys* keys) // Any GL Init Code & User Initialiazation Goes Here
{
g_window = window;
g_keys = keys;
// Start Of User Initialization
angle = 0.0f; // Set Starting Angle To Zero
hdd = DrawDibOpen(); // Grab A Device Context For Our Dib
glClearColor (0.0f, 0.0f, 0.0f, 0.5f); // Black Background
glClearDepth (1.0f); // Depth Buffer Setup
glDepthFunc (GL_LEQUAL); // The Type Of Depth Testing (Less Or Equal)
glEnable(GL_DEPTH_TEST); // Enable Depth Testing
glShadeModel (GL_SMOOTH); // Select Smooth Shading
glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Set Perspective Calculations To Most Accurate
quadratic=gluNewQuadric(); // Create A Pointer To The Quadric Object
gluQuadricNormals(quadratic, GLU_SMOOTH); // Create Smooth Normals
gluQuadricTexture(quadratic, GL_TRUE); // Create Texture Coords
glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); // Set Texture Max Filter
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); // Set Texture Min Filter
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); // Set The Texture Generation Mode For S To Sphere Mapping
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); // Set The Texture Generation Mode For T To Sphere Mapping
OpenAVI("data/face2.avi"); // Open The AVI File
// Create The Texture
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
return TRUE; // Return TRUE (Initialization Successful)
}
void Deinitialize (void) // Any User DeInitialization Goes Here
{
CloseAVI(); // Close The AVI File
}
void Update (DWORD milliseconds) // Perform Motion Updates Here
{
if (g_keys->keyDown [VK_ESCAPE] == TRUE) // Is ESC Being Pressed?
{
TerminateApplication (g_window); // Terminate The Program
}
if (g_keys->keyDown [VK_F1] == TRUE) // Is F1 Being Pressed?
{
ToggleFullscreen (g_window); // Toggle Fullscreen Mode
}
if ((g_keys->keyDown [' ']) && !sp) // Is Space Being Pressed And Not Held?
{
sp=TRUE; // Set sp To True
effect++; // Change Effects (Increase effect)
if (effect>3) // Over Our Limit?
effect=0; // Reset Back To 0
}
if (!g_keys->keyDown[' ']) // Is Space Released?
sp=FALSE; // Set sp To False
if ((g_keys->keyDown ['B']) && !bp) // Is 'B' Being Pressed And Not Held?
{
bp=TRUE; // Set bp To True
bg=!bg; // Toggle Background Off/On
}
if (!g_keys->keyDown['B']) // Is 'B' Released?
bp=FALSE; // Set bp To False
if ((g_keys->keyDown ['E']) && !ep) // Is 'E' Being Pressed And Not Held?
{
ep=TRUE; // Set ep To True
env=!env; // Toggle Environment Mapping Off/On
}
if (!g_keys->keyDown['E']) // Is 'E' Released?
ep=FALSE; // Set ep To False
angle += (float)(milliseconds) / 60.0f; // Update angle Based On The Timer
next+=milliseconds; // Increase next Based On The Timer
frame=next/mpf; // Calculate The Current Frame
if (frame>=lastframe) // Are We At Or Past The Last Frame?
{
frame=0; // Reset The Frame Back To Zero (Start Of Video)
next=0; // Reset The Animation Timer (next)
}
}
void Draw (void) // Draw Our Scene
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
GrabAVIFrame(frame); // Grab A Frame From The AVI
if (bg) // Is Background Visible?
{
glLoadIdentity(); // Reset The Modelview Matrix
glBegin(GL_QUADS); // Begin Drawing The Background (One Quad)
// Front Face
glTexCoord2f(1.0f, 1.0f); glVertex3f( 11.0f, 8.3f, -20.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-11.0f, 8.3f, -20.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-11.0f, -8.3f, -20.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 11.0f, -8.3f, -20.0f);
glEnd(); // Done Drawing The Background
}
glLoadIdentity (); // Reset The Modelview Matrix
glTranslatef (0.0f, 0.0f, -10.0f); // Translate 10 Units Into The Screen
if (env) // Is Environment Mapping On?
{
glEnable(GL_TEXTURE_GEN_S); // Enable Texture Coord Generation For S (NEW)
glEnable(GL_TEXTURE_GEN_T); // Enable Texture Coord Generation For T (NEW)
}
glRotatef(angle*2.3f,1.0f,0.0f,0.0f); // Throw In Some Rotations To Move Things Around A Bit
glRotatef(angle*1.8f,0.0f,1.0f,0.0f); // Throw In Some Rotations To Move Things Around A Bit
glTranslatef(0.0f,0.0f,2.0f); // After Rotating Translate To New Position
switch (effect) // Which Effect?
{
case 0: // Effect 0 - Cube
glRotatef (angle*1.3f, 1.0f, 0.0f, 0.0f); // Rotate On The X-Axis By angle
glRotatef (angle*1.1f, 0.0f, 1.0f, 0.0f); // Rotate On The Y-Axis By angle
glRotatef (angle*1.2f, 0.0f, 0.0f, 1.0f); // Rotate On The Z-Axis By angle
glBegin(GL_QUADS); // Begin Drawing A Cube
// Front Face
glNormal3f( 0.0f, 0.0f, 0.5f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
// Back Face
glNormal3f( 0.0f, 0.0f,-0.5f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
// Top Face
glNormal3f( 0.0f, 0.5f, 0.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
// Bottom Face
glNormal3f( 0.0f,-0.5f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
// Right Face
glNormal3f( 0.5f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
// Left Face
glNormal3f(-0.5f, 0.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glEnd(); // Done Drawing Our Cube
break; // Done Effect 0
case 1: // Effect 1 - Sphere
glRotatef (angle*1.3f, 1.0f, 0.0f, 0.0f); // Rotate On The X-Axis By angle
glRotatef (angle*1.1f, 0.0f, 1.0f, 0.0f); // Rotate On The Y-Axis By angle
glRotatef (angle*1.2f, 0.0f, 0.0f, 1.0f); // Rotate On The Z-Axis By angle
gluSphere(quadratic,1.3f,20,20); // Draw A Sphere
break; // Done Drawing Sphere
case 2: // Effect 2 - Cylinder
glRotatef (angle*1.3f, 1.0f, 0.0f, 0.0f); // Rotate On The X-Axis By angle
glRotatef (angle*1.1f, 0.0f, 1.0f, 0.0f); // Rotate On The Y-Axis By angle
glRotatef (angle*1.2f, 0.0f, 0.0f, 1.0f); // Rotate On The Z-Axis By angle
glTranslatef(0.0f,0.0f,-1.5f); // Center The Cylinder
gluCylinder(quadratic,1.0f,1.0f,3.0f,32,32); // Draw A Cylinder
break; // Done Drawing Cylinder
}
if (env) // Environment Mapping Enabled?
{
glDisable(GL_TEXTURE_GEN_S); // Disable Texture Coord Generation For S (NEW)
glDisable(GL_TEXTURE_GEN_T); // Disable Texture Coord Generation For T (NEW)
}
glFlush (); // Flush The GL Rendering Pipeline
} |
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