Processing Forum

PGraphics3D, ignore alpha channel information when rendering to screen

[3 Replies]
- 10-Mar-2013 07:53 AM
- Forum: Core Library Questions
Hi, I guess this question is for Andres.

Is it possible to update a PGraphics (P2D, P3D) element so that the alpha channel information is ignored and the element is rendered fully opaque (I have tried filter(OPAQUE); but this drives my CPU crazy)?

For example, when I draw a couple of shapes with a semi-transparent color into a PGraphics3D element I want to retain the semi-transparent alpha behavior when they overlap, but the PGraphics element as a whole should be rendered fully opaque when drawing it onto the screen with image(pg3D, 0 , 0 ); ?

ControlP5 updates

[3 Replies]
- 16-Sep-2012 05:25 AM
- Forum: Library and Tool Development
With the latest releases of processing's 2.0 ControlP5 had to undergo various changes and updates as well.

First the not so good news, ControlP5 2.0 and higher will not be backwards compatible with processing 1.5.1 and earlier anymore but older versions are still available from the download list on google code. Sketches created with older version will still run with the latest ControlP5 version, I tried my best not to remove outdated methods, see the source code for heavy deprecation overload.

Now the good news, with ControlP5 2.0 Android is supported and a few changes were necessary most importantly all java.awt dependecies have been removed to support Android mode. This also means that the ControlWindow (to display controllers in a separate window) had to go, but I have included an example (examples/extra/frame) that shows how to create your own custom Frame when in desktop mode which can be used to display controllers.

More examples are now available which demonstate the use and functionality of available controllers. By browsing and reading through the examples you should get a good idea of how to use controlP5. For each sketch inside examples/controllers there is a quick reference of public methods available for each respective controller at the bottom of the sketch's source code.

All major changes are reflected inside the changelog.txt file available from http://code.google.com/p/controlp5/source/browse/trunk/src/controlP5/changeLog.txt

New controllers include

- Println (examples/extra/ControlP5console) which allows you to redirect and show all println triggered console message inside a textarea while a sketch is running

- FrameRate (examples/extra/ControlP5frameRate), a controller that shows the current framerate

- Annotations (examples/use/ControlP5annotation) allow you to automatically create controller using the @ControlElement annotation for fields and methods. This has been adapted from the great cp5magic implementation by Karsten Schmidt

- Pointer (examples/extra/ControlP5pointer) allows you to override the mosue input and replace it with your own input, this can be useful when working with mutitouch applications. Pointer is not a full multitouch implementation like tuio but only allows for a single touch input.

- Properties (examples/controllers/ControlP5properties) allow you to save the value of a controller to a file which can be loaded again. This can be helpful when the states of controllers have to be loaded and saved for example for realtime events where different settings are required.

- Snapshots (examples/use/ControlP5snapshot) are similar to properties but instead of saving to a file a snapshot saves the state of a controller to memory.

- ControllerView (examples/use/ControlP5customView), a controller uses the Interface ControllerView to rendered its appearance. The ControllerView can be easily changed by calling setView(ControllerView)

Android mode

I have successfully tested the mouse (touch) dependent controllers with the latest version of processing (2.0b3) the key input as of now is not well supported and therefore the textfield needs to be a bit more patient to be fully functional.

Install and download

the latest version of controlP5 to use with processing 2.0 is available from the website www.sojamo.de/libraries/controlP5 all development can be followed at code.google.com/p/controlp5 all versions are archived at code.google.com/p/controlp5/downloads/list or you can use the lately introduced library manager for the processing IDE to download controlP5 (go to Sketch → Import Library... → Add Library...)

How to use this thread

I will use this thread to post future updates, if you have questions related to updates or future features, please post them here. If you have problems or need to solve particular controlP5 issues, please create a new thread or use the issue tracker at code.google.com/p/controlp5/issues/list

best,

Andreas

www.sojamo.de

processing 2.0b PFont.getFont() missing

[2 Replies]
- 08-Sep-2012 09:44 AM
- Forum: Core Library Questions
Hi, with pocessing 2.0b the PFont.getFont() function has gone missing. I understand that processing 2.0 is going through many changes for the new release but for library contributors such changes come as a surprise and unfortunately result in breaking the library. May I propose that changes in the API go through a deprecating process first to grant library contributors some time to respond to these small but crucial changes. That would be great. Best, Andreas

How to install a contributed library

[2 Replies]
- 19-Jun-2010 12:19 AM
- Forum: Contributed Library Questions
Contributed libraries must be downloaded separately and placed within the libraries folder of your Processing sketchbook.
For the newcomers, Processing programs are (often) called sketches ("quick drawings"), and consist (at least) of a <sketch name>.pde file in a <sketch name> folder, for example a CircleCollision.pde file in a CircleCollision folder. There can be more files, of course.
The place where the sketches are grouped on your disk is called the sketchbook. To find (and change) the Processing sketchbook location on your computer, open the Preferences window from the Processing application (PDE) and look for the "Sketchbook location" item at the top.

Copy the contributed library's folder into the libraries folder at this location. You will need to create the libraries folder if this is your first contributed library.

By default the following locations are used for your sketchbook folder. For Mac users the sketchbook folder is located inside ~/Documents/Processing. For Windows users the sketchbook folder is located inside folder My Documents/Processing

Let's say you downloaded a library with name theLibrary. Then the folder structure of this library inside the libraries folder should look like the one below. The top folder of a library must have the same name as the .jar file located inside a library's library folder (minus the .jar extension):

Documents

      Processing
            your sketch folders

            libraries

                  theLibrary

                        examples

                        library

                              theLibrary.jar

                        reference

                        src

Some folders like examples or src might be missing. After a library has been successfully installed, restart Processing application.

Still having trouble?

In some cases the top folder of a library does not exist after extracting from the downloaded zip file. In this case, the top folder must be created manually and given the same name as the .jar file inside folder library. After creating and renaming the top folder, move all extracted folders from the zip file in there.

For example, you downloaded the library theLibrary, then your folder structure should look like this:

theLibrary

      examples

      library

            theLibrary.jar

      reference

      src

now move theLibrary folder into the libraries folder and you should have a folder structure like this

Processing

      your sketch folders
      libraries

            theLibrary

                  examples

                  library

                        theLibrary.jar

                  reference

                  src

After a library has been successfully installed, restart Processing application.

andreas schlegel, www.sojamo.de

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