Re: Questions about how to draw random squares within certain ranges
On Oct 19, 1:21 am, "Andrew Thompson" <andrewtho...@gmail.com> wrote:
digiboos...@gmail.com wrote:
Hi, everyone. I am new here, please be patient. :DGlad you took my advice to post to this group, but..
Here is the thing, I need to design a class that represents couple
buildings. Within those buildings, I need to put some random lightened
windows which can be showed by using yellow squares. The random part
really got me. So my questions is how do I randomize those yellow
squares?..to get everybody up to speed, I suggested.
You need either an instance of the Random class, or
Math.random(), to produce random numbers.
Math.random() is the easier to use..
boolean darkWindow = ( Math.random()>0.7 ) // gone to bed!
To which you said you needed more detail..
O..K I'll give a little more detail now.
The boolean variable, 'darkWindow' will have around a %70
chance of being 'false' after that line of code. Call it for each
loop in the loop that makes the windows, and you can use
the value of darkWindow (false) to color 30% of the windows
lighter, and (true) to color 70% dark.
Further questions from you will need more detail, though.
When you do not understand something, be specific about what
you do not understand (even if it is "what does 'boolean' mean?").
Few people will dive into a vague invitation to give 'more detail'
unless they understand what it is you are having trouble with.
Do you have the code yet, that can draw a grid of
windows all in one color?
Andrew T.
I wrote the code for the building:
//Building.java
import javax.swing.JFrame;
public class Building
{
public static void main (String[] args)
{
JFrame frame = new JFrame ("Building");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new BuildingPanel());
frame.pack();
frame.setVisible(true);
}
}
//BuildingPanel
import javax.swing.*;
import java.awt.*;
public class BuildingPanel extends JPanel
{
private Rectangle rec1, rec2, rec3, rec4;
public BuildingPanel()
{
rec1 = new Rectangle (40,190,Color.black,20,250);
rec2 = new Rectangle (50,170,Color.black,90,240);
rec3 = new Rectangle (70,215,Color.black,170,225);
rec4 = new Rectangle (90,283,Color.black,310,117);
setPreferredSize (new Dimension (400,400));
setBackground (Color.blue);
}
public void paintComponent (Graphics page)
{
super.paintComponent(page);
rec1.draw(page);
rec2.draw(page);
rec3.draw(page);
rec4.draw(page);
}
}
//Rectangle
import java.awt.*;
public class Rectangle
{
private int x, y, width, height;
private Color color;
public Rectangle (int w, int h, Color shade, int upperX, int upperY)
{
width = w;
height = h;
color = shade;
x = upperX;
y = upperY;
}
public void draw (Graphics page)
{
page.setColor (color);
page.fillRect (x, y, width, height);
}
public void setWidth (int w)
{
width = w;
}
public void setHeight (int h)
{
height = h;
}
public void setColor (Color shade)
{
color = shade;
}
public void setX (int upperX)
{
x = upperX;
}
public void setY (int upperY)
{
y = upperY;
}
//Get
public int getWidth ()
{
return width;
}
public int getHeight ()
{
return height;
}
public Color getColor ()
{
return color;
}
public int getX ()
{
return x;
}
public int getY ()
{
return y;
}
}