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Add degree/radians conversion functions and manual entries, and clean up other entries.

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This commit is contained in:
skylarmt 2015-01-02 01:34:44 -07:00
parent 15b70aa227
commit 2815d6d797
4 changed files with 18 additions and 32 deletions
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23
src/net/apocalypselabs/symat/Functions.java
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@ -27,6 +27,7 @@
*/
package net.apocalypselabs.symat;
import static java.lang.Math.*;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.swing.JOptionPane;
@ -65,22 +66,18 @@ public class Functions {
public String D(String function, String idv) {
return util.evaluate("diff(" + function + "," + idv + ")").toString();
}
public double cos(Object expression) {
return Double.parseDouble(util.evaluate("Cos("+expression+")").toString());
}
public double sin(Object expression) {
return Double.parseDouble(util.evaluate("Sin("+expression+")").toString());
}
public double tan(Object expression) {
return Double.parseDouble(util.evaluate("Tan("+expression+")").toString());
}
public String factor(String function) {
return sym("Factor(" + function + ")");
}
public double rad(double degrees) {
return degrees * (PI/180);
}
public double deg(double radians) {
return radians * (180/PI);
}
public String sym(String input) {
return util.evaluate(input).toString();

3
src/net/apocalypselabs/symat/help/commands.html
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@ -24,7 +24,8 @@
<br><b>plotscale({-1,0,1,2,3})</b> Scale the graph. Erases content when scaled.
Smaller is farther out, larger closer.
<br><b>drawDot(x,y)</b> Draw a small red dot wherever you tell it.
<br><b></b>
<br><b>rad(degrees), deg(radians)</b> Convert degrees to radians and vice versa.
Python has built-in radians(degrees) and degrees(radians) which work the same.
<br><b></b>
<br><b></b>
</p>

12
src/net/apocalypselabs/symat/help/graphing.html
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@ -4,11 +4,11 @@
</head>
<body>
<h1>Graphing</h1>
<p>You can open a graph window with its button.
You can also start it with s function to graph with
the command plot("sin[x]") or whatever.</p>
<p>Pretty much, if you want to graph "y=32*x", enter "32*x".</p>
<p><i>Protip: You can save your cool graphs as a
picture without using a camera, check it out!</i></p>
<p>You can open a standalone graph window from the ribbon bar.
You can also use a graph from a script or shell, for example,
the command plot("sin[x]").</p>
<p>To graph a function, it must be in the form y=(something x).
Only input the right-hand side of the equation.</p>
<p><i>Tip: You can export graphs as images for presentations and the like.</i></p>
</body>
</html>

12
src/net/apocalypselabs/symat/help/welcome.html
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@ -1,12 +0,0 @@
<html>
<head>
<title>Welcome!</title>
</head>
<body>
<h1>Welcome to SyMAT!</h1>
<p>SyMAT is a Java-based algebra and calculus system.
Scripts and commands can be written in JavaScript or Python.</p>
<p><b>Copyright:</b><br>
SyMAT is copyright &copy; 2014 Apocalypse Laboratories. See Licenses for more information.</p>
</body>
</html>