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The following commit(s) were added to refs/heads/master by this push:
new dbec0bd MATH-1605: removing unneeded geometry example
dbec0bd is described below
commit dbec0bd7a77d70d9a8c6c8039a818fe0a5fdbf52
Author: Matt Juntunen <mattjuntu...@apache.org>
AuthorDate: Sun Jul 18 12:05:09 2021 -0400
MATH-1605: removing unneeded geometry example
---
.../math4/userguide/geometry/GeometryExample.java | 282 ---------------------
1 file changed, 282 deletions(-)
diff --git
a/src/userguide/java/org/apache/commons/math4/userguide/geometry/GeometryExample.java
b/src/userguide/java/org/apache/commons/math4/userguide/geometry/GeometryExample.java
deleted file mode 100644
index 8bdb1ab..0000000
---
a/src/userguide/java/org/apache/commons/math4/userguide/geometry/GeometryExample.java
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.commons.math4.userguide.geometry;
-
-import java.awt.BorderLayout;
-import java.awt.Color;
-import java.awt.Component;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.geom.Point2D;
-import java.util.ArrayList;
-import java.util.List;
-
-import javax.swing.BorderFactory;
-import javax.swing.JButton;
-import javax.swing.JComponent;
-import javax.swing.JPanel;
-import javax.swing.JSplitPane;
-
-
-import org.apache.commons.rng.UniformRandomProvider;
-import org.apache.commons.rng.simple.RandomSource;
-import
org.apache.commons.geometry.core.precision.EpsilonDoublePrecisionContext;
-import org.apache.commons.geometry.euclidean.twod.Segment;
-import org.apache.commons.geometry.euclidean.twod.Vector2D;
-import org.apache.commons.geometry.enclosing.Encloser;
-import org.apache.commons.geometry.enclosing.EnclosingBall;
-import org.apache.commons.geometry.enclosing.WelzlEncloser;
-import org.apache.commons.geometry.enclosing.euclidean.twod.DiskGenerator;
-import org.apache.commons.geometry.enclosing.euclidean.twod.WelzlEncloser2D;
-import org.apache.commons.geometry.hull.euclidean.twod.ConvexHull2D;
-import org.apache.commons.geometry.hull.euclidean.twod.ConvexHullGenerator2D;
-import org.apache.commons.geometry.hull.euclidean.twod.MonotoneChain;
-
-import org.apache.commons.math4.util.FastMath;
-import org.apache.commons.math4.userguide.ExampleUtils;
-import org.apache.commons.math4.userguide.ExampleUtils.ExampleFrame;
-import org.piccolo2d.PCamera;
-import org.piccolo2d.PCanvas;
-import org.piccolo2d.PNode;
-import org.piccolo2d.event.PBasicInputEventHandler;
-import org.piccolo2d.event.PInputEvent;
-import org.piccolo2d.event.PMouseWheelZoomEventHandler;
-import org.piccolo2d.nodes.PPath;
-import org.piccolo2d.nodes.PText;
-
-/**
- * Simple example illustrating some parts of the geometry package.
- *
- * TODO:
- * - select tolerance level
- * - allow editing of the point set
- */
-public class GeometryExample {
-
- public static List<Vector2D> createRandomPoints(int size) {
- final UniformRandomProvider random =
RandomSource.create(RandomSource.MT);
-
- // create the cloud container
- List<Vector2D> points = new ArrayList<>(size);
- // fill the cloud with a random distribution of points
- for (int i = 0; i < size; i++) {
- points.add(Vector2D.of(FastMath.round(random.nextDouble() * 400 +
100),
- FastMath.round(random.nextDouble() * 400 + 100)));
- }
-
- return points;
- }
-
- public static List<Vector2D> createCircle(int samples) {
- List<Vector2D> points = new ArrayList<>();
- final Vector2D center = Vector2D.of(300, 300);
- double range = 2.0 * FastMath.PI;
- double step = range / (samples + 1);
- for (double angle = 0; angle < range; angle += step) {
- Vector2D circle = Vector2D.of(FastMath.cos(angle),
FastMath.sin(angle));
- points.add(circle.multiply(200).add(center));
- }
-
- return points;
- }
-
- public static List<Vector2D> createCross() {
- List<Vector2D> points = new ArrayList<>();
-
- for (int i = 100; i < 500; i += 10) {
- points.add(Vector2D.of(300, i));
- points.add(Vector2D.of(i, 300));
- }
-
- return points;
- }
-
- public static PCanvas createCanvas() {
- final PCanvas canvas = new PCanvas();
- final PCamera camera = canvas.getCamera();
-
- final PText tooltipNode = new PText();
- tooltipNode.setPickable(false);
- camera.addChild(tooltipNode);
-
- camera.addInputEventListener(new PBasicInputEventHandler() {
- public void mouseMoved(final PInputEvent event) {
- updateToolTip(event);
- }
-
- public void mouseDragged(final PInputEvent event) {
- updateToolTip(event);
- }
-
- public void updateToolTip(final PInputEvent event) {
- final PNode n = event.getPickedNode();
- final Object object = (Object) n.getAttribute("tooltip");
- if (object != null) {
- final String tooltipString = object.toString();
- final Point2D p = event.getCanvasPosition();
-
- event.getPath().canvasToLocal(p, camera);
-
- tooltipNode.setText(tooltipString);
- tooltipNode.setOffset(p.getX() + 8, p.getY() - 8);
- } else {
- tooltipNode.setText(null);
- }
- }
- });
-
- // uninstall default zoom event handler
- canvas.removeInputEventListener(canvas.getZoomEventHandler());
-
- // install mouse wheel zoom event handler
- final PMouseWheelZoomEventHandler mouseWheelZoomEventHandler = new
PMouseWheelZoomEventHandler();
- canvas.addInputEventListener(mouseWheelZoomEventHandler);
-
- return canvas;
- }
-
- @SuppressWarnings("serial")
- public static class Display extends ExampleFrame {
-
- private List<Vector2D> points;
- private PCanvas canvas;
- private JComponent container;
- private JComponent controlPanel;
-
- public Display() {
- setTitle("Commons Math: Geometry Examples");
- setSize(800, 700);
-
- container = new JPanel(new BorderLayout());
- canvas = createCanvas();
- container.add(canvas);
- container.setBorder(BorderFactory.createLineBorder(Color.black,
1));
-
- controlPanel = new JPanel();
- JButton random = new JButton("Randomize");
- controlPanel.add(random);
-
- random.addActionListener(new ActionListener() {
-
-// @Override
- public void actionPerformed(ActionEvent e) {
- canvas.getLayer().removeAllChildren();
-
- points = createRandomPoints(1000);
- paintConvexHull();
- }
- });
-
- JButton circle = new JButton("Circle");
- controlPanel.add(circle);
-
- circle.addActionListener(new ActionListener() {
-
-// @Override
- public void actionPerformed(ActionEvent e) {
- canvas.getLayer().removeAllChildren();
-
- points = createCircle(100);
- paintConvexHull();
- }
- });
-
- JButton cross = new JButton("Cross");
- controlPanel.add(cross);
-
- cross.addActionListener(new ActionListener() {
-
-// @Override
- public void actionPerformed(ActionEvent e) {
- canvas.getLayer().removeAllChildren();
-
- points = createCross();
- paintConvexHull();
- }
- });
-
- JSplitPane splitpane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
container, controlPanel);
- splitpane.setDividerLocation(600);
-
- add(splitpane);
-
- points = createRandomPoints(1000);
- paintConvexHull();
- }
-
- @Override
- public Component getMainPanel() {
- return container;
- }
-
- public void paintConvexHull() {
- PNode pointSet = new PNode();
- for (Vector2D point : points) {
- final PNode node = PPath.createEllipse(point.getX() - 1,
point.getY() - 1, 2, 2);
- node.addAttribute("tooltip", point);
- node.setPaint(Color.gray);
- pointSet.addChild(node);
- }
-
- canvas.getLayer().addChild(pointSet);
-
- ConvexHullGenerator2D generator = new MonotoneChain(true, new
EpsilonDoublePrecisionContext(1e-6));
- ConvexHull2D hull = generator.generate(points);
//AklToussaintHeuristic.reducePoints(points));
-
- PNode hullNode = new PNode();
- for (Vector2D vertex : hull.getVertices()) {
- final PPath node = PPath.createEllipse(vertex.getX() - 1,
vertex.getY() - 1, 2, 2);
- node.addAttribute("tooltip", vertex);
- node.setPaint(Color.red);
- node.setStrokePaint(Color.red);
- hullNode.addChild(node);
- }
-
- for (Segment line : hull.getPath().getSegments()) {
- final PPath node =
PPath.createLine(line.getStartPoint().getX(), line.getStartPoint().getY(),
- line.getEndPoint().getX(),
line.getEndPoint().getY());
- node.setPickable(false);
- node.setPaint(Color.red);
- node.setStrokePaint(Color.red);
- hullNode.addChild(node);
- }
-
- canvas.getLayer().addChild(hullNode);
-
- WelzlEncloser2D encloser = new WelzlEncloser2D(new
EpsilonDoublePrecisionContext(1e-10));
- EnclosingBall<Vector2D> ball = encloser.enclose(points);
-
- final double radius = ball.getRadius();
- PPath ballCenter =
- PPath.createEllipse(ball.getCenter().getX() - 1,
ball.getCenter().getY() - 1, 2, 2);
- ballCenter.setStrokePaint(Color.blue);
- ballCenter.setPaint(Color.blue);
- canvas.getLayer().addChild(0, ballCenter);
-
- PPath ballNode =
- PPath.createEllipse(ball.getCenter().getX() - radius,
ball.getCenter().getY() - radius,
- radius * 2, radius * 2);
- ballNode.setTransparency(1.0f);
- ballNode.setStrokePaint(Color.blue);
- canvas.getLayer().addChild(0, ballNode);
- }
- }
-
- public static void main(final String[] argv) {
- ExampleUtils.showExampleFrame(new Display());
- }
-}
