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import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
import java.util.Arrays;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.ListCellRenderer;
public class CulkinAsssignmentNine {
public static void main(String[] args) {
JFrame fram = new JFrame();
fram.setLayout(new GridLayout(1, 1));
JPanel canvas = new JPanel();
canvas.setLayout(new GridLayout(1, 1));
JPanel points = new JPanel();
points.setLayout(new BorderLayout());
JPanel listPanel = new JPanel();
listPanel.setLayout(new GridLayout(1, 1));
DefaultListModel<TDPoint> pointModel = new DefaultListModel<>();
JList<TDPoint> pointList = new JList<>(pointModel);
pointList.setCellRenderer(new TDPointRenderer());
JScrollPane listScroller = new JScrollPane(pointList);
listPanel.add(listScroller);
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(1, 2));
JButton addPoint = new JButton("Add Control Point");
JButton remPoint = new JButton("Remove Control Point");
buttonPanel.add(addPoint);
buttonPanel.add(remPoint);
points.add(listPanel, BorderLayout.CENTER);
points.add(buttonPanel, BorderLayout.PAGE_END);
JSplitPane main = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, points, canvas);
fram.add(main);
fram.setSize(640, 480);
fram.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
fram.setVisible(true);
}
}
class Bezier {
public final TDPoint[] controls;
public Bezier(TDPoint... points) {
controls = points;
}
public TDPoint eval(double t) {
return evalIntern(t, controls.length, 0);
}
private TDPoint evalIntern(double t, int j, int k) {
if (j == 0)
return controls[k];
TDPoint l = evalIntern(t, j - 1, k);
TDPoint r = evalIntern(t, j - 1, k + 1);
l = l.multiply(1 - t);
r = r.multiply(t);
return TDPoint.add(l, r);
}
public Bezier[] decompose(double t) {
Bezier[] curves = new Bezier[2];
{
TDPoint[] points = new TDPoint[controls.length];
for (int i = 0; i < points.length; i++) {
points[i] = evalIntern(t, i, 0);
}
curves[0] = new Bezier(points);
}
{
TDPoint[] points = new TDPoint[controls.length];
for (int i = 0; i < points.length; i++) {
points[i] = evalIntern(t, (points.length - 1) - i, i);
}
curves[1] = new Bezier(points);
}
return curves;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Arrays.hashCode(controls);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Bezier other = (Bezier) obj;
if (!Arrays.equals(controls, other.controls))
return false;
return true;
}
@Override
public String toString() {
return "Bezier [controls=" + Arrays.toString(controls) + "]";
}
}
class TDPoint {
public final double x;
public final double y;
public TDPoint(double x, double y) {
this.x = x;
this.y = y;
}
public static TDPoint p2(double x, double y) {
return new TDPoint(x, y);
}
public TDPoint multiply(double s) {
return p2(x * s, y * s);
}
public static TDPoint add(TDPoint p1, TDPoint p2) {
return p2(p1.x + p2.x, p1.y + p2.y);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
long temp;
temp = Double.doubleToLongBits(x);
result = prime * result + (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(y);
result = prime * result + (int) (temp ^ (temp >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
TDPoint other = (TDPoint) obj;
if (Double.doubleToLongBits(x) != Double.doubleToLongBits(other.x))
return false;
if (Double.doubleToLongBits(y) != Double.doubleToLongBits(other.y))
return false;
return true;
}
@Override
public String toString() {
return "TDPoint [x=" + x + ", y=" + y + "]";
}
}
final class TDPointRenderer extends JLabel implements ListCellRenderer<TDPoint> {
private static final long serialVersionUID = 629873168260730449L;
public TDPointRenderer() {
setOpaque(true);
setHorizontalAlignment(CENTER);
setVerticalAlignment(CENTER);
}
@Override
public Component getListCellRendererComponent(JList<? extends TDPoint> list, TDPoint value, int index,
boolean isSelected, boolean cellHasFocus) {
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
setText(String.format("(%.2d, %.2d)", value.x, value.y));
return this;
}
}
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