Processing Forum

Loading...

Processing Forum

Screen name:
bager
Twitter Link:
http://twitter.com/bagerakbay

bager's Profile

2 Posts

6 Responses

0 Followers

Activity Trend

Last 30 days

Loading Chart...

Show:

Expanded view
List view

Execute a string

[6 Replies]
- 10-Jun-2011 06:54 AM
- Forum: Programming Questions
Hi,
I am developing a GA system. I have a DNA which has nodes like

<dna>

  <operator>+</operator>

  <child1>

   <operator>sin</operator>

   <child1>

   <value>x</value>

   </child1>

  </child1>

  <child2>

  <operator>cos</operator>

   <child1>

   <value>y</value>

   </child1>

  </child2>

</dna>

which is parsed to "sin(x)+cos(y)"

a DNA can be very complex

I have to use this function to find all possible pixels in an image.

So that I need to execute the command;

longest solution which I do not want to do is using switches and calculate every node.

I could not find an execute command for Processing.

I thought about using javascript in Processing so that I can run this string with eval but I could not manage to do it.

What do you suggest ?

GSVideo + Serial library --> Null Pointer Exception

[1 Reply]
- 30-Apr-2011 06:51 AM
- Forum: Contributed Library Questions
import processing.serial.*;
import codeanticode.gsvideo.*;

importing these 2 libraries creates NullPointerException

java.lang.NullPointerException
    at processing.app.debug.Compiler.contentsToClassPath(Compiler.java:705)
    at processing.app.Sketch.preprocess(Sketch.java:1385)
    at processing.app.Sketch.preprocess(Sketch.java:1205)
    at processing.app.Sketch.build(Sketch.java:1568)
    at processing.app.Sketch.build(Sketch.java:1553)
    at processing.app.Editor$DefaultRunHandler.run(Editor.java:1485)
    at java.lang.Thread.run(Thread.java:619)

my os is xp sp3
processing version is 1.21
gsVideo version 0.8

I can not use standart video library since its too slow for the videos I am playing.

Any advices would be great

«Prev
Next »