processing / processing-web-archive

Repository for the Processing.org web site, examples, reference, and dreams

Since the release of Processing 3.5.4 in January 2020, development has moved to a new repository.

Using a 4.0 release (even an alpha or beta version) is recommended if you find an issue. To avoid confusion, this repo will remain open at least until a 4.0 release is the default download at https://processing.org/download. We chose to move to a new repository so that we could clean out old files accumulated over the last 20 years.

Processing

This is the official source code for the Processing Development Environment (PDE), the “core” and the libraries that are included with the download.

I've found a bug! Let us know here (after first checking if someone has already posted a similar problem). If it's a reference, web site, or examples issue, take that up with folks here. There are also separate locations for Android Mode, or the Video and Sound libraries. The processing.js project is not affiliated with us, but you can find their issue tracker here.

Locked Issues Where possible, I've started locking issues once resolved. This helps reduce the amount of noise from folks adding to an issue that's been closed for years. Because this project has existed for a long time and we have thousands of closed issues, lots of them may sound similar to an issue you're having. But if there's a new problem, it'll be missed if it's lost in a comment added to an already closed issue. I don't like to lock issues because it cuts off conversation, but it's better than legitimate problems being missed. Once an issue has been resolved for 30 days, it will automatically lock.

That processing-bugs fella is suspicious. The issues list has been imported from Google Code, so there are many spurious references amongst them since the numbering changed. Basically, any time you see references to changes made by processing-bugs, it may be somewhat suspect. Over time this will clean itself up as bugs are fixed and new issues are added from within GitHub. Help speed this process along by helping us!

Please help. The instructions for building the source are here. Please help us fix problems, and if you're submitting code, following the style guidelines helps save me a lot of time.

And finally... Someday we'll also fix all these bugs, throw together hundreds of unit tests, and get rich off all this stuff that we're giving away for free. But not today.

So in the meantime, I ask for your patience, participation, and patches.

Ben Fry, 20 January 2019

processing-web-archive's Issues

Document randomGaussian()

Error 404 for mask() reference

processing/processing#1579

Migrate todo.txt and todo-web.txt to issues

I'd like to open a discussion for migrating items in todo.txt and todo-web.txt to GitHub issues. I'm willing to do the work if Casey and others can just answer some of my questions.

Improve documentation for working with vector type in P2D/P3D

Legibility

The current fad of using small, light grey or other light colored text makes it near impossible for my aging eyes to read anything without magnifying my display to ridiculous sizes—a real pain. Could you at least provide some text size and color options in Progress and and on your website?

Thanks

Create Table examples for 2.0 release

Book p. 670

processing/processing#621

beginContour tutorial - "The function beginShape() does not exist"

Hi,

Not sure if this issue is covered by the other open PShape issues/enhancements already documented, so you might already be aware of it.

On this tutorial: http://processing.org/reference/PShape_beginContour_.html

It uses the beginShape method on a PShape object, but compiling in the IDE (processing 2.0b7 on Windows Vista) I get the error "The function beginShape() does not exist".

Looking at the javadoc here: http://processing.googlecode.com/svn/trunk/processing/build/javadoc/core/processing/core/PShape.html it appears beginShape isn't a method of PShape, but rather a method of PGraphics, here: http://processing.googlecode.com/svn/trunk/processing/build/javadoc/core/processing/core/PGraphics.html#beginShape()

From my understanding of what's in the IDE's example code of BeginEndContour, the tutorial in the first link above needs to be updated to remove beginShape/endShape, and have end() added after the second endContour() call.

Thanks,
Ben.

Syntax highlighting for code in online examples and reference

Reference error in rel. processing-2.0b7

Zip of the latest release contains invalid names for reference, e.g. image_.html (should be image.html).

createShape() reference needs to be updated for 2b8 syntax

processing/processing#1653

Complete Table reference entries

Current status from todo.txt

• TABLE --SM
  x loadTable()
  x loadTable("somethingorother", "csv");
  x loadTable("somethingorother.csv", "tsv"); // override the .csv extension since the contents are tab delimited
  x saveTable() --SM
  x createTable() --SM
  • other new Table methods

Update new data tutorial + examples

make 3 data examples conform to each other: JSON, XML, Table + update the data tutorial.

PGraphics is not syntax highlighting in 2.0b8

PGraphics is not syntax highlighting in 2.0b8

JSONObject.parse() errors out on clean JSON input

input file:
https://github.com/ibiwan/dynamisaurus-rects/blob/master/rMain/dnd.json

error displayed:
"java.lang.RuntimeException: JSONArray initial value should be a string or collection or array."

This file is cleanly parsed with the original org.json library.

ArrayList doc page should use generics?

http://processing.org/reference/ArrayList.html

clear() isn't showing up as a method of PGraphics in reference

clear() isn't showing up as a method of PGraphics in reference

Book p.467

processing/processing#899

/reference/char.html: Numeric code for DEL is incorrect

The numeric value of the delete key is 127, not 377. I also feel the value should not be displayed with single quotes.

hittest(_,_) & calculateBounce(_,_)

hittest(shape,width,height,x,y,shape2,width,height,x,y) would detect whether two objects are colliding(ex: hittest(ellipse,16,16,230,300,rectangle,25,16,200,100);)
calculateBounce would calculate the direction of the bounce with the same parameters as hittest.

Move JavaDoc from Google Code

Move the JavaDoc from its current location on Google Code to a place on the main Processing website. Copy the JavaDoc HTML from GitHub via a script on the server.

Update the Reference to point to the new location: http://processing.org/reference/javadoc/

Book p. 118

processing/processing#860

No library found for processing.serial

When Installing Processing 2.0b7 on OSX 10.8 and Running a Sketch in Android mode I am getting and error:

No library found for processing.serial

I've looked at similiar issues that others have had online and there is no clear solution?

Esefera example contains spurious code

When I wanted to translate the Esefera sketch to ruby I found that there was some spurious code see amended version here:- https://gist.github.com/monkstone/4966077

Finalize integration between XML descriptions and Core

I hope we can sit down this year and sort out this remaining integration issue with the new reference engine.

Examples download for Processing Handbook have old sketch names with _

Update PShape tutorial to reflect recent 2.0 API updates

Complete examples for PDF with typography and images

Build a few basic examples that show how to work with vector fonts and images with PDF export.

Where are these examples from the PShape tutorial?

"For the full examples, take a look at "PolygonPShapeOOP1", "PolygonPShapeOOP2", and "PolygonPShapeOOP3". It should also be noted that the rendering speed optimization of retained mode is only relevant to P2D and P3D drawing modes, as it requires hardware acceleration."

Create JSON examples for 2.0 release

generate scripts should refresh from git instead of svn

Particularly generate/libraries.php, but I'm guessing this also applies to other files.

Complete PShape reference entries

Such as:
setStroke()
setFill()
etc.

graphEquasion([function])

Soooo much easier to make graphing games or games that include things like user-input based equations. [function] is in the String format. Example: graphEquasion("y=sin(100x)100");
example 2:
string equation=[user input]
graphEquasion(equation);

Documentation inconsistency for XML.getContent()

See: processing/processing#1615

Many examples do not run without modification (broken)

From processing/processing#1658.

I'll audit all the examples that are packaged with 2.0b8 and create a pull request w/ fixes.

@shiffman: Just let me know to back off if I'm stepping on your toes.

DOCUMENT: extending PApplet now requires import of Frame class

Since 2.0b7, when creating an additional Applet as an extension of PApplet, the Frame class needs to be imported via import java.awt.Frame; but this is not mentioned anywhere.

I would suggest adding it to the next list of revisions at
http://processing.googlecode.com/svn/trunk/processing/build/shared/revisions.txt

and/or the Wiki Changes page at
http://wiki.processing.org/w/Changes#Upcoming_changes_in_Processing_2.0_.28revision_0198.2B.29

Modify Capture examples to use new camera setup API

Add TAU as alias for TWO_PI

Update reference in regard to this: processing/processing#1526

Improve Topics/Interaction examples

Remove “Iterator” from examples included in the download

processing/processing#1587

processing - image

Please tell me why when I execute the code taken from : http://www.khanacademy.org/cs/booleans/839898911 with processing 2,08b, I get only part of the picture as in : http://tinypic.com/view.php?pic=331zlhs&s=6

Thanks

textureWrap()

http://processing.org/reference/textureWrap_.html

Links to/from texture() ( http://processing.org/reference/texture_.html ) should be added under the "Related" section (as for textureMode() = http://processing.org/reference/textureMode_.html )

Add enums for createShape(): ELLIPSE, RECT, etc.

Complete JSON reference entries

This API is still in discussion

create a way to make separate methods for sprite-like objects with its own variables

It would be sooo much easier to make particle fields and other similar object generation things.

PVector documentation page does not cover heading2D method

See processing/processing#356

Update reference for shape() to include shape(x, y, z)

selectInput - error in reference

The example for selectInput does not work. Trying to run

void setup() {
selectInput("Select a file to process:", "fileSelected");
}

void fileSelected(File selection) {
if (selection == null) {
println("Window was closed or the user hit cancel.");
} else {
println("User selected " + selection.getAbsolutePath());
}
}

in processing 2.0 b7 I get the error message

Cannot find a class or type named "File"

Trying to get around this problem with

void setup() {
selectInput("Select a file to process:", "fileSelected");
}

void fileSelected() {

}

the program starts, but after selection of a file it crashes and gives the error message

fileSelected() could not be found

Maybe I am doing something wrong. But I think that the reference has to be improved.
Meanwhile I am using processing 1.5.1 and I cannot use the new version.

Book p. 76 - Bézier vertices examples incorrect

processing/processing#192

Missing a simple Readme

Should have a simple README.md like the other projects.
(This is a simple issue, with my selfish intent of conducting a pull request for this repo now that it's on GitHub.)