ТЕМА: Пожелания для Марсохода4

#include <stdlib.h>
#include <GL/glut.h>

#define N 8
int Width=1024, Height=768;
int x1[N]={100,120,140,160,180,200,220,240};
int x2[N]={200,220,240,260,280,300,320,340};
int y1[N]={100,120,140,160,180,200,220,240};
int y2[N]={200,220,240,260,280,300,320,340};
int stX = 0, stY = 0;
int xx = 0, yy = 0;
int xx0 = 0, yy0 = 0;

void Display( void ) {
	int i;
	glClearColor( 0, 0, 0, 1 );
	glClear( GL_COLOR_BUFFER_BIT );

	for(i=N-1;i>=0;i--){
		if(i==0) 
			glColor3f( 0, 0.75, 0 );
		else 
			glColor3f( 0, 0.5, 0 );
		glBegin( GL_QUADS );	
			glVertex2i( x1[i], y1[i] );
			glVertex2i( x2[i], y1[i] );
			glVertex2i( x2[i], y2[i] );
			glVertex2i( x1[i], y2[i] );
		glEnd();
		glColor3f( 1, 0, 0 );
		glBegin( GL_LINE_LOOP );	
			glVertex2i( x1[i], y1[i] );
			glVertex2i( x2[i], y1[i] );
			glVertex2i( x2[i], y2[i] );
			glVertex2i( x1[i], y2[i] );
		glEnd();		
	}	
	
	glColor3f( 1, 1, 1 );
	glBegin( GL_POINTS );
		glVertex2i( xx, yy );
	glEnd( );	
	
	glFlush( ); 
}

void Reshape( int w, int h ) {
	Width = w; 
	Height = h;
	glViewport( 0, 0, w, h );
	glMatrixMode( GL_PROJECTION );
	glLoadIdentity( );
	glOrtho( 0, w, 0, h, -1, 1 );
	glPointSize( 10 );
	glLineWidth( 1 );	
}

void MouseMove( int x, int y ) {
	xx = x; 
	yy = Height - y;
	xx0 = xx; 
	yy0 = yy;
	glutPostRedisplay( );
}

void MouseActiveMove( int x, int y ) {
	int dx, dy;
	xx = x; 
	yy = Height - y;
	if( stX == 1 ) x1[0] = xx; 
	if( stX == 2 ) x2[0] = xx;
	if( stY == 1 ) y1[0] = yy; 
	if( stY == 2 ) y2[0] = yy;
	if( ( stX == 3 ) & ( stY == 3 ) ) {
		dx = xx - xx0; 
		dy = yy - yy0;
		xx0 = xx; 
		yy0 = yy; 			
		x1[0] = x1[0] + dx;	
		x2[0] = x2[0] + dx;	
		y1[0] = y1[0] + dy;	
		y2[0] = y2[0] + dy;
	}
	glutPostRedisplay( );
}

void Mouse( int button, int state, int x, int y ) {
	int i,n,t,xx1,xx2,yy1,yy2;
	int yy; 
	yy = Height - y;
	
	n=-1;
	for(i=N-1;i>0;i--) 
		if( ( x1[i] < x ) & ( x < x2[i] ) & ( y1[i] < yy ) & ( yy < y2[i] ) ) 
			n=i;
	if( ( (x1[0]-5) <= x ) & ( x <= (x2[0]+5) ) & ( (y1[0]-5) <= yy ) & ( yy <= (y2[0]+5) ) ) 
		n=0;
	
	if( n>0 ) {
		xx1=x1[n]; 
		xx2=x2[n]; 
		yy1=y1[n]; 
		yy2=y2[n];
		
		for(i=n;i>0;i--) { 
			x1[i]=x1[i-1]; 
			x2[i]=x2[i-1];
			y1[i]=y1[i-1]; 
			y2[i]=y2[i-1];
		}
		
		x1[0]=xx1; 
		x2[0]=xx2;
		y1[0]=yy1; 
		y2[0]=yy2;		
	}

	if( state == GLUT_DOWN ) {
		if( button == GLUT_LEFT_BUTTON ) {
			if( ( x1[0] < x ) & ( x < x2[0] ) & ( y1[0] < yy ) & ( yy < y2[0] ) ) { 
				stX = 3; 
				stY = 3; 
			} 
			if( ( (x1[0] - 5) <= x ) & ( x <= (x1[0] + 5) ) & ( y1[0] <= yy ) & ( yy <= y2[0] ) ) 
				stX = 1; 
			if( ( (x2[0] - 5) <= x ) & ( x <= (x2 [0]+ 5) ) & ( y1[0] <= yy ) & ( yy <= y2[0] ) ) 
				stX = 2;
			if( ( (y1[0] - 5) <= yy ) & ( yy <= (y1[0] + 5) ) & ( x1[0] <= x ) & ( x <= x2[0] ) ) 
				stY = 1; 
			if( ( (y2[0] - 5) <= yy ) & ( yy <= (y2[0] + 5) ) & ( x1[0] <= x ) & ( x <= x2[0] ) ) 
				stY = 2;						
		}
	} else { 
		stX = 0;
		stY = 0;
		if( x1[0] > x2[0] ) { 
			t=x1[0]; 
			x1[0]=x2[0]; 
			x2[0]=t; 
		}
		if( y1[0] > y2[0] ) { 
			t=y1[0]; 
			y1[0]=y2[0]; 
			y2[0]=t; 
		}		
	}
	glutPostRedisplay( );	
}

void Keyboard( unsigned char key, int x, int y ) {
	const char ESCAPE = '\033';
	if( key == ESCAPE ) 
		exit( 0 ) ;
}

void main ( int argc, char** argv ) {
	glutInit( &argc, argv );
	glutInitDisplayMode( GLUT_RGB );
	glutInitWindowSize( Width , Height );
	glutInitWindowPosition( 128, 128 );		
	glutCreateWindow( "Test" );
	glutDisplayFunc( Display );
	glutReshapeFunc( Reshape );
	glutKeyboardFunc( Keyboard );
	glutMouseFunc( Mouse );
	glutMotionFunc( MouseActiveMove );
	glutPassiveMotionFunc( MouseMove );
	glutMainLoop( );
}