Hello,

I'm trying to use OpenGL in a library.

I'm using Eclipse on Vista.

I've added opengl.jar, jogl.jar, gluegen-rt.jar, gluegen-rt.dll, jogl_awt.dll, jogl_cg.dll and jogl.dll to my projects libs folder and the added opengl.jar, jogl.jar and gluegen-rt.jar to my build path.

When I try to build the library using ant I get an error saying that it  cannot find symbol  : class PGraphicsOpenGL, and an error saying package processing.opengl does not exist.

When I'm in the editor I don't get any errors come up when importing processing.opengl.* so I don't know why it's not being found when building the library.

Any ideas?

Thanks

Hi Quark,

Thanks for the response but yes I've already added core.jar to the build path.

Hi,

I've removed all the opengl stuff from my library. Looks like this issue was concealing another. I have other libraries that cannot be found (errors are thrown but the library builds successfully).

I just want to make sure I'm going through the motions:

1) I stick the jar files in the libs directory
2) I add them to the build path
3) I edit build.properties and add the jar files to classpath.local.include=core.jar, externallibs.jar ...

Is this correct, am I missing something. WHen I build none of the libs other than core.jar seem to be found

I assume you are using the library template provided by Processing. If so then in the Eclipse project under resources open up the build.xml in Section 3 it asks for the jar files required for compiling. This maybe why it is not picking up on the other libraries you mentioned.

I can't promise that this is causing your problems but it might be worth including the libraries here.

Below is the first 20 or so lines of the build.xml file from the Shapes3D library which shows the section 3 I am talking about.

Code:

<project name="Shapes3D" default="build" basedir="../">
    
	<description>
	  processingLibs. ant build file.
    </description>

	
<!-- #### (1) where are your processing libraries located? edit location. #### -->
	<property name="processing" location="../../Processing/libraries"/>


<!-- #### (2) where are the jar files located that are required for compiling 
		your library such as e.g. core.jar ? edit location. #### -->

	<property name="libraryClasspath"  location="../libs"/>	
	<path id="library-classpath">
		<fileset dir="${libraryClasspath}" >		
<!-- #### (3) add the jar files that are required for compiling. edit name.
		for more include files. duplicate <include name="" /> #### -->
			<include name="core.jar"/>
		</fileset>
	</path>		
	

<!-- #### (4) set the java version that should be used to compile your library. #### -->	
	<property name="javaVersion" value="1.5"/>
		
 

The

hi moesian, you are using the latest template - with this template all build properties have been removed from the build.xml file and put into the build.properties file.
i just tried what you described - on a mac though - with the latest template and works ok when i create a new WB_Line object for testing. my classpath.local.include
Code:

classpath.local.include=core.jar,geom.jar
 

if i remove geom.jar from classpath.local.include, i get errors and the console will tell me that the build failed.

i assume, the error message you are getting refers to a warning message when compiling the build.xml file in normal mode (line 84: project.compile=normal) when the javadoc is created and added to the distribution. you are probably seeing something like this:
Code:

 [javadoc] ... .java:45: package wblut.geom does not exist
 

its a warning message which is thrown by javadoc since it cant find a reference to the wblut.geom package (which can more or less be ignored), but this is only relevant for the javadoc command, not for compiling the source of your library.
since the console output says 'build successful', your library has been compiled properly and should work. did you give it a try? it should appear in your sketchbook/libraries folder. (no need to change the build.xml file, the properties file should do the job)
best,
andreas

@quark, updateded it earlier this month. but the older version still works fine.
@moesian, to add opengl to your classpath, put opengl.jar and jogl.jar into your libs folder (the path is defined in property classpath.local.location inside the build.properties file), then add opengl.jar and jogl.jar to the classpath.local.include property
Code:

classpath.local.include=core.jar,opengl.jar,jogl.jar
 

(you still need to add the opengl related .jar files to your eclipse-project's 'Java Build Path' properties separately)