How do I draw a line?

We will assume that you know how to import Minueto into your project and how to create a MinuetoWindow. If this is not the case, please read How to build your first game Window?.

To draw a line on a MinuetoWindow, you need to call the drawLine method.

window.drawLine(MinuetoColor.RED, 0, 0, 200, 200);

This will draw a red line from (0,0) to (200,200).

Unfortunately, drawing a line is an expensive operation, much slower than drawing an image. If you wish to repetitively draw the same line, it might be wise to cache the lines. To do this, you build build an empty MinuetoImage and draw your lines over this transparent surface. You can then draw this "image of the lines" on the MinuetoWindow without any performance cost.

Example of drawing a line

The following code would create a 50 by 50 image containing a red X.

MinuetoImage redX;
redX = new MinuetoImage(50,50);
redX.drawLine(MinuetoColor.RED, 0, 0, 49, 49);
redX.drawLine(MinuetoColor.RED, 0, 49, 49, 0);

To better illustrate how to cache your line draws, here is an example of an application that caches drawLine operations.

import org.minueto.*; 
import org.minueto.handlers.*; 
import org.minueto.image.*; 
import org.minueto.window.*; 

public class Demo {

    public static void main(String[] args) {

        MinuetoWindow window; 
        MinuetoImage redX;
        
        window = new MinuetoFrame(640, 480, true); 
        
        redX = new MinuetoImage(50,50);
        redX.drawLine(MinuetoColor.RED, 0, 0, 49, 49);
        redX.drawLine(MinuetoColor.RED, 0, 49, 49, 0); 
        window.setVisible(true);

        while(true) { 
            window.draw(redX, 10, 10);
            window.render();
            Thread.yield();
        }
    }
}