a7771ab4b2
Fixed in fghActivateMenu, whose logic is now simpler and commented as well git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1398 7f0cb862-5218-0410-a997-914c9d46530a
402 lines
10 KiB
C
402 lines
10 KiB
C
/*
|
|
* one.c
|
|
*
|
|
* Hey! This was the original file where freeglut development started. Just
|
|
* note what I have written here at the time. And see the creation date :)
|
|
*
|
|
* : This is a wrapper. I still have to figure out
|
|
* : how to build shared libraries under *nix :)
|
|
*
|
|
* Copyright (c) 1999 by Pawel W. Olszta
|
|
* Written by Pawel W. Olszta, <olszta@sourceforge.net>
|
|
* Creation date: czw gru 2 11:58:41 CET 1999
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <GL/freeglut.h>
|
|
|
|
int g_LeaveGameMode = 0;
|
|
int g_InGameMode = 0;
|
|
int g_mainwin, g_sw1, g_sw2, g_gamemodewin;
|
|
|
|
/*
|
|
* Call this function to have some text drawn at given coordinates
|
|
*/
|
|
void PrintText( int nX, int nY, char* pszText )
|
|
{
|
|
int lines;
|
|
char *p;
|
|
|
|
/*
|
|
* Prepare the OpenGL state
|
|
*/
|
|
glDisable( GL_LIGHTING );
|
|
glDisable( GL_DEPTH_TEST );
|
|
glMatrixMode( GL_PROJECTION );
|
|
glPushMatrix();
|
|
glLoadIdentity();
|
|
|
|
/*
|
|
* Have an orthogonal projection matrix set
|
|
*/
|
|
glOrtho( 0, glutGet( GLUT_WINDOW_WIDTH ),
|
|
0, glutGet( GLUT_WINDOW_HEIGHT ),
|
|
-1, +1
|
|
);
|
|
|
|
/*
|
|
* Now the matrix mode
|
|
*/
|
|
glMatrixMode( GL_MODELVIEW );
|
|
glPushMatrix();
|
|
glLoadIdentity();
|
|
|
|
/*
|
|
* Now the main text
|
|
*/
|
|
glColor3ub( 0, 0, 0 );
|
|
glRasterPos2i( nX, nY );
|
|
|
|
for( p=pszText, lines=0; *p; p++ )
|
|
{
|
|
if( *p == '\n' )
|
|
{
|
|
lines++;
|
|
glRasterPos2i( nX, nY-(lines*18) );
|
|
}
|
|
|
|
glutBitmapCharacter( GLUT_BITMAP_HELVETICA_18, *p );
|
|
}
|
|
|
|
/*
|
|
* Revert to the old matrix modes
|
|
*/
|
|
glMatrixMode( GL_PROJECTION );
|
|
glPopMatrix();
|
|
|
|
glMatrixMode( GL_MODELVIEW );
|
|
glPopMatrix();
|
|
|
|
/*
|
|
* Restore the old OpenGL states
|
|
*/
|
|
glColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
|
|
glEnable( GL_DEPTH_TEST );
|
|
glEnable( GL_LIGHTING );
|
|
}
|
|
|
|
/*
|
|
* This is the display routine for our sample FreeGLUT windows
|
|
*/
|
|
void SampleDisplay( void )
|
|
{
|
|
int win = glutGetWindow();
|
|
|
|
if (g_InGameMode && win!=g_gamemodewin)
|
|
/* Dont draw other windows when in gamemode, those aren't visible
|
|
* anyway. Drawing them continuously anyway can cause flicker trouble
|
|
* on my machine. This only seems to occur when there are child windows
|
|
* among the non-visible windows
|
|
*/
|
|
return;
|
|
|
|
if (win==g_sw1)
|
|
{
|
|
/*
|
|
* Clear the screen
|
|
*/
|
|
glClearColor(0.7f,0.7f,0.7f,1);
|
|
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
|
glutPostWindowRedisplay(g_mainwin);
|
|
}
|
|
else if (win==g_sw2)
|
|
{
|
|
/*
|
|
* Clear the screen
|
|
*/
|
|
glClearColor(0.3f,0.3f,0.3f,1);
|
|
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
|
glutPostWindowRedisplay(g_mainwin);
|
|
}
|
|
else
|
|
{
|
|
const GLfloat time = glutGet(GLUT_ELAPSED_TIME) / 1000.f * 40;
|
|
|
|
/*
|
|
* Clear the screen
|
|
*/
|
|
glClearColor( 0, 0.5, 1, 1 );
|
|
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
|
|
|
/*
|
|
* Have the cube rotated
|
|
*/
|
|
glMatrixMode( GL_MODELVIEW );
|
|
glPushMatrix();
|
|
|
|
glRotatef( time, 0, 0, 1 );
|
|
glRotatef( time, 0, 1, 0 );
|
|
glRotatef( time, 1, 0, 0 );
|
|
|
|
/*
|
|
* And then drawn...
|
|
*/
|
|
glColor3f( 1, 1, 0 );
|
|
/* glutWireCube( 20.0 ); */
|
|
glutWireTeapot( 20.0 );
|
|
/* glutWireSphere( 15.0, 15, 15 ); */
|
|
/* glColor3f( 0, 1, 0 ); */
|
|
/* glutWireCube( 30.0 ); */
|
|
/* glutSolidCone( 10, 20, 10, 2 ); */
|
|
|
|
/*
|
|
* Don't forget about the model-view matrix
|
|
*/
|
|
glPopMatrix( );
|
|
|
|
/*
|
|
* Draw a silly text
|
|
*/
|
|
if( g_InGameMode == 0 )
|
|
PrintText( 20, 20, "Hello there cruel world!" );
|
|
else
|
|
PrintText( 20, 20, "Press ESC to leave the game mode!" );
|
|
}
|
|
|
|
/*
|
|
* And swap this context's buffers
|
|
*/
|
|
glutSwapBuffers( );
|
|
glutPostWindowRedisplay(win);
|
|
}
|
|
|
|
/*
|
|
* This is a sample idle function
|
|
*/
|
|
void SampleIdle( void )
|
|
{
|
|
if( g_LeaveGameMode == 1 )
|
|
{
|
|
/* One could do all this just as well in SampleGameModeKeyboard... */
|
|
glutLeaveGameMode( );
|
|
g_LeaveGameMode = 0;
|
|
g_InGameMode = 0;
|
|
}
|
|
}
|
|
|
|
void SampleEntry(int state)
|
|
{
|
|
int window = glutGetWindow () ;
|
|
printf ( "Window %d Entry Callback: %d\n", window, state ) ;
|
|
}
|
|
|
|
/*
|
|
* The reshape function
|
|
*/
|
|
void SampleReshape( int nWidth, int nHeight )
|
|
{
|
|
GLfloat fAspect = (GLfloat) nHeight / (GLfloat) nWidth;
|
|
GLfloat fPos[ 4 ] = { 0.0f, 0.0f, 10.0f, 0.0f };
|
|
GLfloat fCol[ 4 ] = { 0.5f, 1.0f, 0.0f, 1.0f };
|
|
|
|
/*
|
|
* Update the viewport first
|
|
*/
|
|
glViewport( 0, 0, nWidth, nHeight );
|
|
|
|
/*
|
|
* Then the projection matrix
|
|
*/
|
|
glMatrixMode( GL_PROJECTION );
|
|
glLoadIdentity();
|
|
glFrustum( -1.0, 1.0, -fAspect, fAspect, 1.0, 80.0 );
|
|
|
|
/*
|
|
* Move back the camera a bit
|
|
*/
|
|
glMatrixMode( GL_MODELVIEW );
|
|
glLoadIdentity( );
|
|
glTranslatef( 0.0, 0.0, -40.0f );
|
|
|
|
/*
|
|
* Enable some features...
|
|
*/
|
|
glEnable( GL_CULL_FACE );
|
|
glEnable( GL_DEPTH_TEST );
|
|
glEnable( GL_NORMALIZE );
|
|
|
|
/*
|
|
* Set up some lighting
|
|
*/
|
|
glLightfv( GL_LIGHT0, GL_POSITION, fPos );
|
|
glEnable( GL_LIGHTING );
|
|
glEnable( GL_LIGHT0 );
|
|
|
|
/*
|
|
* Set up a sample material
|
|
*/
|
|
glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, fCol );
|
|
}
|
|
|
|
/*
|
|
* A sample keyboard callback
|
|
*/
|
|
void SampleKeyboard( unsigned char cChar, int nMouseX, int nMouseY )
|
|
{
|
|
printf( "SampleKeyboard(): keypress '%c' at (%i,%i)\n",
|
|
cChar, nMouseX, nMouseY );
|
|
}
|
|
|
|
/*
|
|
* A sample keyboard callback (for game mode window)
|
|
*/
|
|
void SampleGameModeKeyboard( unsigned char cChar, int nMouseX, int nMouseY )
|
|
{
|
|
if( cChar == 27 )
|
|
g_LeaveGameMode = 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* A sample special callback
|
|
*/
|
|
void SampleSpecial( int nSpecial, int nMouseX, int nMouseY )
|
|
{
|
|
printf( "SampleSpecial(): special keypress %i at (%i,%i)\n",
|
|
nSpecial, nMouseX, nMouseY );
|
|
}
|
|
|
|
/*
|
|
* A sample menu callback
|
|
*/
|
|
void SampleMenu( int menuID )
|
|
{
|
|
printf( "SampleMenu() callback executed, menuID is %i\n", menuID );
|
|
}
|
|
|
|
/*
|
|
* A sample menu status callback
|
|
*/
|
|
void SampleMenuStatus( int status, int x, int y )
|
|
{
|
|
printf ( "SampleMenu() callback executed, MenuStatus is %i at (%i,%i)\n", status, x, y );
|
|
}
|
|
|
|
/*
|
|
* The sample's entry point
|
|
*/
|
|
int main( int argc, char** argv )
|
|
{
|
|
int menuID, subMenuA, subMenuB;
|
|
|
|
glutInitDisplayString( "stencil~2 rgb double depth>=16 samples" );
|
|
glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
|
|
glutInitWindowPosition( 100, 100 );
|
|
|
|
glutInit( &argc, argv );
|
|
|
|
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_GLUTMAINLOOP_RETURNS);
|
|
|
|
subMenuA = glutCreateMenu( SampleMenu );
|
|
glutAddMenuEntry( "Sub menu A1 (01)", 1 );
|
|
glutAddMenuEntry( "Sub menu A2 (02)", 2 );
|
|
glutAddMenuEntry( "Sub menu A3 (03)", 3 );
|
|
|
|
subMenuB = glutCreateMenu( SampleMenu );
|
|
glutAddMenuEntry( "Sub menu B1 (04)", 4 );
|
|
glutAddMenuEntry( "Sub menu B2 (05)", 5 );
|
|
glutAddMenuEntry( "Sub menu B3 (06)", 6 );
|
|
glutAddSubMenu( "Going to sub menu A", subMenuA );
|
|
|
|
menuID = glutCreateMenu( SampleMenu );
|
|
glutAddMenuEntry( "Entry one", 1 );
|
|
glutAddMenuEntry( "Entry two", 2 );
|
|
glutAddMenuEntry( "Entry three", 3 );
|
|
glutAddMenuEntry( "Entry four", 4 );
|
|
glutAddMenuEntry( "Entry five", 5 );
|
|
glutAddSubMenu( "Enter sub menu A", subMenuA );
|
|
glutAddSubMenu( "Enter sub menu B", subMenuB );
|
|
|
|
glutCreateWindow( "Hello world!" );
|
|
glutDisplayFunc( SampleDisplay );
|
|
glutReshapeFunc( SampleReshape );
|
|
glutKeyboardFunc( SampleKeyboard );
|
|
glutSpecialFunc( SampleSpecial );
|
|
glutIdleFunc( SampleIdle );
|
|
glutEntryFunc( SampleEntry );
|
|
glutMenuStatusFunc( SampleMenuStatus );
|
|
glutAttachMenu( GLUT_LEFT_BUTTON );
|
|
|
|
glutInitWindowPosition( 200, 200 );
|
|
g_mainwin = glutCreateWindow( "I am not Jan B." );
|
|
glutDisplayFunc( SampleDisplay );
|
|
glutReshapeFunc( SampleReshape );
|
|
glutKeyboardFunc( SampleKeyboard );
|
|
glutSpecialFunc( SampleSpecial );
|
|
glutIdleFunc( SampleIdle );
|
|
glutEntryFunc( SampleEntry );
|
|
glutMenuStatusFunc( SampleMenuStatus );
|
|
glutAttachMenu( GLUT_LEFT_BUTTON );
|
|
glutSetMenu(subMenuA);
|
|
glutAttachMenu( GLUT_RIGHT_BUTTON );
|
|
|
|
g_sw1=glutCreateSubWindow(g_mainwin,200,0,100,100);
|
|
glutDisplayFunc( SampleDisplay );
|
|
glutSetMenu(subMenuB);
|
|
glutAttachMenu( GLUT_LEFT_BUTTON );
|
|
|
|
g_sw2=glutCreateSubWindow(g_sw1,50,0,50,50);
|
|
glutDisplayFunc( SampleDisplay );
|
|
glutSetMenu(menuID);
|
|
glutAttachMenu( GLUT_RIGHT_BUTTON );
|
|
|
|
printf( "Testing game mode string parsing, don't panic!\n" );
|
|
glutGameModeString( "320x240:32@100" );
|
|
glutGameModeString( "640x480:16@72" );
|
|
glutGameModeString( "1024x768" );
|
|
glutGameModeString( ":32@120" );
|
|
glutGameModeString( "Toudi glupcze, Danwin bedzie moj!" );
|
|
|
|
glutGameModeString( "640x480:37@300" ); /* this one should fail */
|
|
glutEnterGameMode();
|
|
|
|
glutGameModeString( "800x600" ); /* this one is likely to succeed */
|
|
g_gamemodewin = glutEnterGameMode();
|
|
|
|
if (glutGameModeGet(GLUT_GAME_MODE_ACTIVE))
|
|
g_InGameMode = 1;
|
|
glutDisplayFunc( SampleDisplay );
|
|
glutReshapeFunc( SampleReshape );
|
|
glutKeyboardFunc( SampleGameModeKeyboard );
|
|
glutIdleFunc( SampleIdle );
|
|
glutEntryFunc( SampleEntry );
|
|
glutMenuStatusFunc( SampleMenuStatus );
|
|
glutSetMenu(menuID);
|
|
glutAttachMenu( GLUT_LEFT_BUTTON );
|
|
|
|
printf( "current window is %ix%i at (%i,%i)\n",
|
|
glutGet( GLUT_WINDOW_WIDTH ), glutGet( GLUT_WINDOW_HEIGHT ),
|
|
glutGet( GLUT_WINDOW_X ), glutGet( GLUT_WINDOW_Y )
|
|
);
|
|
|
|
/*
|
|
* Enter the main FreeGLUT processing loop
|
|
*/
|
|
glutMainLoop();
|
|
|
|
/*
|
|
* returned from mainloop after window closed
|
|
* see glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_GLUTMAINLOOP_RETURNS); above
|
|
*/
|
|
printf( "glutMainLoop() termination works fine!\n" );
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/*** END OF FILE ***/ |