Processing Forum

increasing framerate - repost

[0 Replies]
- 09-Mar-2011 02:02 AM
- Forum: General Discussion
Hi all, I just found this on the old processing forum:
http://processing.org/discourse/yabb2/YaBB.pl?num=1251765617

User PhiLho, posted that using this on the command line improves his framerate:

-Dsun.java2d.opengl=true

Which really helped me out!

Thanks,

Matt

works as an applet, not as an application

[0 Replies]
- 07-Mar-2011 03:33 PM
- Forum: Integration and Hardware
Hello all, I'm using eclipse, processing 1.2.1 and ubuntu 10.10

I have a weird problem that looks like this. When I export/run as an applet, things work fine. When I export/run as an application things work for a few seconds and then the screen stops updating.

I have a debug mode so I can see that the program is still getting input and responding, trying to draw. But the screen doesn't change after the first few seconds.

What makes this weirder is that sometimes it goes away for a few days/weeks and then it starts again. I have no idea what is the cause.

The code is here: https://github.com/mattvenn/friispray

Any help/clues gratefully received!

Matt

exporting dxf with layers or colours

[2 Replies]
- 03-Mar-2011 09:32 AM
- Forum: Core Library Questions
Hi, I'm trying to make a laser cut pattern parametric.
The laser cutter program uses different colours for different cutting settings.

I'd really like to export the patterns with processing's dxf library, but I can't find a way to set the colour or layer.

Anyone know if this is possible?

I've already tried stroke and fill to no avail!

thanks!

Matt

how to read button presses?

[2 Replies]
- 25-Jul-2010 12:04 PM
- Forum: Android Processing
Hey, this is excellent!

Anyone have any ideas how to:
1. use multitouch?
2. get input from the other buttons on the phone?
3. get input from mic/camera?
Thanks!

sigsegv with gsvideo

[6 Replies]
- 03-Jul-2010 03:25 AM
- Forum: Contributed Library Questions
Hey,

I'm getting sigsegv with a simple gsvideo based program. Processing is 1.0.9, gsvideo is 0.6 pre5, linux is ubuntu 8.10.
# A fatal error has been detected by the Java Runtime Environment:

#

# SIGSEGV (0xb) at pc=0xb7dea896, pid=7246, tid=2691038096

#

# JRE version: 6.0_16-b01

# Java VM: Java HotSpot(TM) Client VM (14.2-b01 mixed mode linux-x86 )

# Problematic frame:

# C [libc.so.6+0x79896] memcpy+0x46

#

# An error report file with more information is saved as:

# /home/matthew/processing-1.0.9/hs_err_pid7246.log

#

# If you would like to submit a bug report, please visit:

# http://java.sun.com/webapps/bugreport/crash.jsp

# The crash happened outside the Java Virtual Machine in native code.

# See problematic frame for where to report the bug.

#
2. import codeanticode.gsvideo.*;
4. color black = color(0);
5. color white = color(255);
7. float boundaries, thresh;
8. static int controlsWidth = 200;
9. int numPixels;
10. GSCapture video;
12. static int maxBoundaries = 4;
13. static int vidWidth, vidHeight;
15. void setup()
16. {
17. vidWidth = 320;
18. vidHeight = 240;
19. size(640, 480, P2D); // Change size to 320 x 240 if too slow at 640 x 480
21. fs = new FullScreen(this);
22. strokeWeight(5);
23. // Uses the default video input, see the reference if this causes an error
24. video = new GSCapture(this, vidWidth, vidHeight, 8);
25. numPixels = video.width * video.height;
26. }
28. void draw()
29. {
30. int threshold = (int)map( mouseX, 0, width, 0, 255 );
31. if (video.available() && mousePressed)
32. {
33. video.read();
34. video.loadPixels();
36. // int threshold = (int)thresh; //map( (float)mouseX, 0, width, 0, 255 ); // Set the threshold value
37. float pixelBrightness; // Declare variable to store a pixel's color
38. // Turn each pixel in the video frame black or white depending on its brightness
39. loadPixels();
41. for (int i = 0; i < numPixels; i++)
42. {
43. pixelBrightness = brightness(video.pixels[i]);
44. if (pixelBrightness > threshold)
45. { // If the pixel is brighter than the
46. video.pixels[i] = white; // threshold value, make it white
47. }
48. else
49. { // Otherwise,
50. video.pixels[i] = black; // make it black
51. }
52. }
54. copy(video, 0, 0 , vidWidth, vidHeight ,0, 0, width , height );
55. updatePixels( );
56. }
57. }

installation of gsvideo

[6 Replies]
- 01-Jul-2010 05:01 PM
- Forum: Contributed Library Questions
Hello everyone,

I'm excited to start using my webcam with processing! (I'm using 1.0.9 on Ubuntu 8.10)

I've downloaded gsvideo 0.6 pre5 and unzipped it to sketchbook/libraries/

I've also tried in ./processing-1.0.9/libraries/

None of the examples work because of errors like

"the package processing.video does not exist"

I found a useful post on the old forum with some code posted by the library author.( http://processing.org/discourse/yabb2/YaBB.pl?num=1260456465)

By changing the import to

import codeanticode.gsvideo.*

and the changing all the "Capture video" to "GSCapture video", I get a working app.

But I'm wondering what everyone else is doing? I'd like to be able to browse the demos without all this changing!

Cheers,

Matthew

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