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| import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.io.File;
import javax.swing.JPanel;
public class HorizonInstrument extends JPanel {
//Graphic object
private Graphics2D g2d;
//Images
private Image background = null;
private Image mobile = null;
//Angles for the mobile image
private float rollAct = 0;
private float rollMin = -180;
private float rollMax = 180;
private float pitchAct = 0;
private float pitchMin = -180;
private float pitchMax = 180;
//Path of the images
private String path = "";
private String defaultPath = "";
//End of the images names
private String backgroundString = "Bg.png";
private String mobileString = "Mb.png";
//Check if there is images available
private boolean check = false;
public HorizonInstrument(String planeName) {
//Set the size of the panel
this.setSize(200, 200);
//Initialize the paths
path = "images" + java.io.File.separatorChar + planeName + java.io.File.separatorChar + "Hor";
defaultPath = "images" + java.io.File.separatorChar + "Default" + java.io.File.separatorChar + "Hor";
//Open the plane images as file (just for the next function)
File test1 = new File(path + backgroundString);
File test2 = new File(path + mobileString);
//Check if the images exists
check = test1.exists() && test2.exists();
//If they exists
if(check) {
//Load the images
background = Toolkit.getDefaultToolkit().createImage(path + backgroundString);
mobile = Toolkit.getDefaultToolkit().createImage(path + mobileString);
}
//If they do not exists
else {
//Open the default images as file (just for the next function)
File test3 = new File(defaultPath + backgroundString);
File test4 = new File(defaultPath + mobileString);
//Check if the images exists
check = test3.exists() && test4.exists();
//If they do exists
if(check) {
//Load the default images
background = Toolkit.getDefaultToolkit().createImage(defaultPath + backgroundString);
mobile = Toolkit.getDefaultToolkit().createImage(defaultPath + mobileString);
}
}
}
@Override
public void paintComponent(Graphics g){
//Load the Graphics objects as a Graphics2D object
g2d = (Graphics2D) g;
//If images available
if (check) {
//Set the background color
g2d.setColor(Color.getHSBColor(0, 0, 23));
g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
//g2d.translate(height, height);
//Rotate it with an angle in gradians
g2d.rotate(rollAct * 0.0174532925, this.getWidth()/2, this.getHeight()/2);
//Draw the mobile image
g2d.drawImage(mobile, 0, 0, this.getWidth(), this.getHeight(), this);
//g2d.translate(-pitchAct, -pitchAct);
g2d.rotate(-rollAct * 0.0174532925, this.getWidth()/2, this.getHeight()/2);
//Draw the background image
g2d.drawImage(background, 0, 0, this.getWidth(), this.getHeight(), this);
}
//If images are not available
else {
//Set the color to red
g2d.setColor(Color.RED);
//Write an error
g2d.drawString("File(s) not found", this.getWidth()/4, this.getHeight()/4);
}
}
public void changeAngle(float roll, float pitch) {
//If images are available
if (check) {
//If roll possible
if ( roll<rollMax && roll>rollMin ) {
//Set roll
rollAct = roll;
}
if ( pitch<pitchMax && pitch>pitchMin ) {
pitchAct = pitch;
}
//Repaint the image
this.repaint();
}
}
} |
