From 88fc0b666c58334009bc274105ea0d2b90edf75d Mon Sep 17 00:00:00 2001
From: Benjamin Culkin <bjculkin@mix.wvu.edu>
Date: Mon, 9 Apr 2018 15:42:35 -0700
Subject: Initial commit

---
 CSMath/src/CulkinAsssignmentNine.java | 215 ++++++++++++++++++++++++++++++++++
 1 file changed, 215 insertions(+)
 create mode 100644 CSMath/src/CulkinAsssignmentNine.java

(limited to 'CSMath/src/CulkinAsssignmentNine.java')

diff --git a/CSMath/src/CulkinAsssignmentNine.java b/CSMath/src/CulkinAsssignmentNine.java
new file mode 100644
index 0000000..da4290d
--- /dev/null
+++ b/CSMath/src/CulkinAsssignmentNine.java
@@ -0,0 +1,215 @@
+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;
+	}
+}
\ No newline at end of file
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