// ======================================================================
// Main procedure - this function runs automatically on startup
// ======================================================================

void main( ){
	
	// Launch the graph window
	createGraphWindow();
	
	// Build the GUI (setting window)
	createSettingWindow();
	
	t = 0.0; // Initialize time variable
	
	// Animation loop
	while( continuesLoop ) {
		
		// Calculate coordinates for the wave and pass them to the graph
		for( int yi=0; yi<N; yi++ ) {
			for( int xi=0; xi<N; xi++ ) {
				
				double x = X_MIN + xi * DX; // X coordinate at xi-th grid line
				double y = Y_MIN + yi * DY; // Y coordinate at yi-th grid line
				double r = sqrt(x*x + y*y); // Distance from the origin
				
				waveX[yi][xi] = x;
				waveY[yi][xi] = y;
				waveZ[yi][xi] = amplitude * sin( 2.0 * PI * ( t/period - r/wavelength ) );
			}
		}
		
		// Send the wave data to the 3D graph
		setGraph3DData( graph, waveX, waveY, waveZ );
		
		// Advance time (scaled by animation speed)
		t += DT * speed;
		
		// Wait for 30 milliseconds to control animation speed
		sleep( 30 );
	}
	
	exit(); // Exit the program when animation loop ends
}