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import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import javax.swing.JComponent;
@SuppressWarnings("serial")
public class FrequencyGraphComponent extends JComponent
{
private FrequencyBag<Integer> fb;
private int min;
private int max;
private int delta;
private int width;
private int height;
private int leftMargin = 10;
private int rightMargin = 10;
private int topMargin = 10;
private int bottomMargin = 10;
public FrequencyGraphComponent(FrequencyBag<Integer> afb, int aMin, int aMax, int aDelta)
{
fb = afb;
min = aMin;
max = aMax;
delta = aDelta;
}
public void paintComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
g2.setColor(Color.BLACK);
width = this.getWidth();
height = this.getHeight();
int maxFrequency = fb.getMaxFrequency();
double deltaWidth = (double) (width - (leftMargin + rightMargin)) / ((max - min) / delta);
double deltaHeight = (double) (height - (topMargin + bottomMargin)) / maxFrequency;
Line2D.Double line = new Line2D.Double(0,0,0,0);
for(int i = min; i < max; i = i + delta)
{
double sx = ((i - min) * deltaWidth) + leftMargin;
double ex = (((i + delta) - min) * deltaWidth) + leftMargin;
double sy = (height - bottomMargin) - (fb.getFrequencyOf(i) * deltaHeight);
double ey = (height - bottomMargin) - (fb.getFrequencyOf(i + delta) * deltaHeight);
line.setLine(sx,sy,ex,ey);
g2.draw(line);
}
g2.setColor(Color.GREEN);
double accProp = 0.0;
for(int i = min; i < max; i = i + delta)
{
accProp = accProp + fb.getProbabilityOf(i);
double nextProp = fb.getProbabilityOf(i + delta);
double sx = ((i - min) * deltaWidth) + leftMargin;
double ex = (((i + delta) - min) * deltaWidth) + leftMargin;
double sy = (height - bottomMargin) * (1 - accProp);
double ey = (height - bottomMargin) * (1 - (accProp + nextProp));
line.setLine(sx,sy,ex,ey);
g2.draw(line);
}
}
}
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