import Graphics;
import Graphics2D;
import GUI;


// Create graphics data and renderer
int graphicsID = newGraphics( );
int rendererID = newGraphics2DRenderer( 800, 500, graphicsID );

// Create display window
int windowID = newWindow( 0, 0, 800, 500, "Hello 2DCG !" );
int labelID = newImageLabel( 0, 0, 800, 500, graphicsID );
mountComponent( labelID, windowID );

// Prepare pixel data arrays
int red[ 500 ][ 800 ];
int green[ 500 ][ 800 ];
int blue[ 500 ][ 800 ];
int alpha[ 500 ][ 800 ];


// Set colors for each pixel
for( int i=0; i<500; i++ ){
	for( int j=0; j<800; j++ ){

		// Red region: top-left area
		if( j < 500 && i < 300 ){
			red[ i ][ j ] = 255;
		} else {
			red[ i ][ j ] = 0;
		}

		// Green region: central band
		if( 200 < j && j < 600 && 100 < i && i < 400 ){
			green[ i ][ j ] = 255;
		} else {
			green[ i ][ j ] = 0;
		}

		// Blue region: bottom-right area
		if( 300 < j && 200 < i ){
			blue[ i ][ j ] = 255;
		} else {
			blue[ i ][ j ] = 0;
		}

		// Fully opaque for all pixels
		alpha[ i ][ j ] = 255;
	}
}

// Apply pixel data to the renderer
setPixel( rendererID, red, green, blue, alpha );

// Render GUI
paintComponent( labelID );
paintComponent( windowID );