742429d1
 pfrison
VRGNYMusicLight b...
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import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JPanel;
public class LightCanvasJPanel extends JPanel {
public static final double[][] DEFAULT_LIGHT_COORDS = new double[][] {
{0, 0} , {0.2, 0} , {0.4, 0} , {0.6 , 0}, {0.8, 0} , {1, 0} ,
{0, 0.2}, {0.2, 0.2}, {0.4, 0.2}, {0.6, 0.2}, {0.8, 0.2}, {1, 0.2},
{0, 0.4}, {0.2, 0.4}, {0.4, 0.4}, {0.6, 0.4}, {0.8, 0.4}, {1, 0.4},
{0, 0.6}, {0.2, 0.6}, {0.4, 0.6}, {0.6, 0.6}, {0.8, 0.6}, {1, 0.6},
{0, 0.8}, {0.2, 0.8}, {0.4, 0.8}, {0.6, 0.8}, {0.8, 0.8}, {1, 0.8},
{0, 1} , {0.2, 1} , {0.4, 1} , {0.6, 1} , {0.8, 1} , {1, 1} ,
};
private static final long serialVersionUID = 1L;
private static final int WIDTH = 320; // = 300 + padding * 2
private static final int HEIGHT = 220; // = 200 + padding * 2
private static final int LIGHT_RADIUS = 4;
private static final int PADDING = 10;
private double[][] lightsCoords;
/**
* @param lightCoords : double[LightID][X = 0, Y = 1] = coordinates as a percentage [0, 1]
*/
public LightCanvasJPanel() {this(DEFAULT_LIGHT_COORDS);}
public LightCanvasJPanel(double[][] lightsCoords) {
this.lightsCoords = lightsCoords;
setPreferredSize(new Dimension(WIDTH, HEIGHT));
}
@Override
protected void paintComponent(Graphics g) {
// background
g.setColor(Color.WHITE);
g.fillRect(0, 0, WIDTH, HEIGHT);
// lights
if(lightsCoords == null) return;
g.setColor(Color.BLACK);
for(double[] light : lightsCoords) {
if(light.length != 2)
throw new MalformedCoordinates();
int centerX = (int) (light[0] * (WIDTH - PADDING * 2)) + PADDING;
int centerY = (int) (light[1] * (HEIGHT - PADDING * 2)) + PADDING;
g.fillOval(centerX - LIGHT_RADIUS, centerY - LIGHT_RADIUS, LIGHT_RADIUS * 2, LIGHT_RADIUS * 2);
}
}
}
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