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/*
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* Apocalypse Laboratories
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* Open Source License
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*
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* Source code can be used for any purpose, as long as:
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* - Compiled binaries are rebranded and trademarks are not
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* visible by the end user at any time, except to give
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* credit to Apocalypse Laboratories, such as by showing
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* "Based on <product> by Apocalypse Laboratories" or a
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* similar notice;
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* - You do not use the code for evil;
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* - Rebranded compiled applications have significant
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* differences in functionality;
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* - and you provide your modified source code for download,
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* under the terms of the GNU LGPL v3 or a comparable
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* license.
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*
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* Compiled binaries cannot be redistributed or mirrored,
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* unless:
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* - You have written permission from Apocalypse Laboratories;
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* - Downloads are not available from Apocalypse Laboratories,
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* not even behind a paywall or other blocking mechanism;
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* - or you have received a multi-computer license, in which
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* case you should take measures to prevent unauthorized
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* downloads, such as preventing download access from the
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* Internet.
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*/
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package net.apocalypselabs.symat;
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import static java.lang.Math.*;
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import javax.swing.JOptionPane;
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import org.matheclipse.core.eval.EvalUtilities;
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import org.matheclipse.parser.client.math.MathException;
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/**
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* These functions are accessible from JavaScript.
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*
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* There are a lot of aliases in here too.
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*
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* @author Skylar
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*/
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public class Functions {
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private final EvalUtilities util = new EvalUtilities(true, true);
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Graph graphwin = new Graph(true);
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/*
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Useful interactions
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*/
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public void notify(Object message) {
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JOptionPane.showInternalMessageDialog(MainGUI.mainPane, message.toString());
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}
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public String ask(String question) {
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return JOptionPane.showInternalInputDialog(MainGUI.mainPane, question);
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}
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/*
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Math commands
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*/
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// Derivative of function with respect to idv
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public String diff(String function, String idv) {
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return util.evaluate("diff(" + function + "," + idv + ")").toString();
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}
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public String diff(String function) {
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// Assume "x" as var
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return diff(function, "x");
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}
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@Deprecated
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public String D(String function, String idv) {
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return diff(function, idv);
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}
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public String integrate(String function, String idv) {
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return util.evaluate("integrate(" + function + "," + idv + ")").toString();
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}
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public String integrate(String function) {
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return integrate(function, "x");
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}
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public String factor(String function) {
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return sym("Factor(" + function + ")");
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}
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public double rad(double degrees) {
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return degrees * (PI / 180);
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}
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public double deg(double radians) {
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return radians * (180 / PI);
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}
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public String sym(String input) {
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return util.evaluate(input).toString();
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}
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// Shortcut for non-JS math evaluation.
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public String $(String input) {
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return sym(input);
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}
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public String replace(String function, String variable, String newvar) {
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return function.replaceAll(variable, newvar);
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}
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public double subs(String function, String variable, String newvar) {
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return numof(function.replaceAll(variable, newvar));
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}
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public double numof(String f) {
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try {
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return Double.parseDouble(util.evaluate("N(" + f + ")").toString());
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} catch (MathException | NumberFormatException ex) {
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return 0.0;
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}
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}
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/*
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Graphing interfaces
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*/
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public void plotrange(double xmin, double xmax) {
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graphwin.setRange(xmin, xmax);
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}
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public void plot(String function) {
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showGraph();
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graphwin.graphFunction(function);
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}
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public void plot(double[] x, double[] y) {
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graphwin.plotPoints(x, y);
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}
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public void plot(double[] x, double[] y, String name) {
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graphwin.plotPoints(x, y, name);
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}
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public void plot(String function, double xmin, double xmax) {
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graphwin.setRange(xmin, xmax);
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plot(function);
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}
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public void ezplot(String f) {
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plot(f);
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}
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public void ezplot(String function, double xmin, double xmax) {
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plot(function, xmin, xmax);
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}
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public void graph(String f) {
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plot(f);
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}
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public void plotname(String t) {
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graphwin.setWindowTitle(t);
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graphwin.setLabel(t);
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}
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public String plotname() {
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return graphwin.getTitle();
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}
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public void plot() {
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showGraph();
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}
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public void plotclr() {
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graphwin.clearDraw();
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}
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public void clearplot() {
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plotclr();
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}
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public void plotclear() {
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plotclr();
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}
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public void drawdot(double x, double y) {
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showGraph();
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graphwin.drawDot(x, y);
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}
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/*
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Other
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*/
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public String sysinfo() {
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String info = "==Java System Information==\n";
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info += "Java version: " + System.getProperty("java.version");
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info += "\nJava vendor: " + System.getProperty("java.vendor");
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info += "\nJava home: " + System.getProperty("java.home");
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return info;
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}
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/**
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* Make sure the graph window shows.
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*/
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private void showGraph() {
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graphwin.setVisible(true);
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graphwin.toFront();
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}
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/*
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Constructor.
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*/
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public Functions() {
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MainGUI.loadFrame(graphwin, false);
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}
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}
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