Processing Forum

Geomerative reverse RPoint array, how to?

[2 Replies]
- 12-Sep-2013 02:42 AM
- Forum: Contributed Library Questions
Hi all, I would like to reverse a list of RPoint, but it tells me that you can not do:

points_ = grp.getPoints();

points_ = reverse(points_);

and it say:

"cannot convert from Object to RPoint[];"

Thank you all...

print the screen image (i mean on a real printer)

[4 Replies]
- 27-Aug-2013 01:27 AM
- Forum: Integration and Hardware
Hello everyone, I would like to know if there is a way that, at some point of a program, the screen will be saved as a picture (ok, easy) and send to the printer connected to the computer, automatically.
Thank you all

Question about dithering images.

[4 Replies]
- 04-Jun-2013 01:21 AM
- Forum: General Discussion
Hi all, I have a question: there is a way to obtain a patter dither filter like this?

I've found a old post for a diffusion dither:

http://processing.org/discourse/alpha/board_Programs_action_display_num_1074152602.html

Thank you all.

2d intersection between lines and circle, how to?

[2 Replies]
- 02-Mar-2013 04:26 AM
- Forum: General Discussion
Hello everyone, I would like to know if there was a library or a method that makes easy to calculate the intersections between planar figures, and in particular I would like to find it among a series of lines and a circle.

thanks

problem on gutenberg.org with loadStrings...

[3 Replies]
- 15-Nov-2012 02:44 PM
- Forum: General Discussion
Hi all, I have a problem: i try to download strings from gutenberg.org but it give me error 403...

The site don't allow processing to connect or there is something wrong in my code?

Thank you all...
2. String book [] = loadStrings ("http://www.gutenberg.org/cache/epub/20015/pg20015.txt");
5. for(int i=0; i < book.length; i++)
6. {
7. println (book[i]);
8. }

find x and y oh a displayed char.

[3 Replies]
- 05-Nov-2012 11:50 PM
- Forum: General Discussion
Hi all, I've a little question.
I've a text box:

text(myString, x, y, width, height);

and i can find all character inside it:

for ( int=0; i < myString.length(); i++)

{

c=myString.charAt(i);

}

Now, there is a way to find the x and y of that specific char?

In this example, it is explained a method to compose a string in wich all chars are object, and it would be a nice method for me, but work only on a line, because the y value is always considered the same.

Thank you all.

http://www.learningprocessing.com/examples/chapter-17/example-17-6/

loadFont faster than createFont?

[1 Reply]
- 04-Nov-2012 02:36 PM
- Forum: General Discussion
The loadFont method, generate a faster sketch than the use of createFont?
Thank you

3d visualization in processing 2.0... some problems.

[2 Replies]
- 04-Nov-2012 02:05 AM
- Forum: General Discussion
Hi all, i'm following the Shiffman's tutorials and i have some dubt.
Usually i work with processing 2.0, but now i have some problem in 3d visualization.

the same script is ok on the 1.5:

Is because 2.0 is still beta or i have tho change something in the script?

Thank you

control p5: how to change the display name of a slider?

[2 Replies]
- 28-Oct-2012 05:56 AM
- Forum: Contributed Library Questions
Hi all, i have a question about control p5.
I'm not so expert but, how i cas change the display name of a slider, respect to his identification name for the public void that is called when I use it?

For example, if I use a two words name, is an incorrect name to the called void.

newbie with OOP have a problem: the sketch overlap the object at every loop, not just change it.

[2 Replies]
- 19-Oct-2012 01:20 AM
- Forum: Programming Questions
Hi all, I'm very new in processing, coming from arduino let's say, and I'm trying to learn the OOP.
So, i did a little object, a kind of bargraph that actually take the inputs from the mouseY, when pressed.

It work, but not properly: i can't understand why it redraw the new shape in the old one, and don't just redefines it.

Thank you all for the help.

Here the code:
2. Graph myGraph;
4. void setup()
5. {
6. size(600, 600);
7. myGraph = new Graph(120, 100, 300, 200, 100);
8. }
10. void draw() {
11. myGraph.display();
13. }
15. void mousePressed() {
16. myGraph.mouse();
17. }
18. class Graph {
19. color c;
20. float x;
21. float y;
22. float base;
23. float alt;
24. float in1, in2, in3, in4, in5, in6;
26. Graph (color col, float posx, float posy, float base1, float alt1) {
28. c= col;
29. x =posx;
30. y = posy;
31. base = base1;
32. alt= alt1;
34. }
35. void display() {
36. fill (c);
38. beginShape();
39. vertex(x, y+alt);
40. //
41. vertex(x, in6);
42. vertex(x+base/5*1, in5);
43. vertex(x+base/5*2, in4);
44. vertex(x+base/5*3, in3);
45. vertex(x+base/5*4, in2);
46. vertex(x+base/5*5, in1);
47. //
48. vertex(x+base, y+alt);
49. endShape(CLOSE);
50. }
52. void mouse()
53. {
54. in6=in5;
55. in5=in4;
56. in4=in3;
57. in3=in2;
58. in2=in1;
59. in1=map (mouseY,0,height,y, y+alt);
61. }
62. }

mail sender problem

[3 Replies]
- 03-Sep-2012 04:01 AM
- Forum: General Discussion
Hi all, I'm using this code to send mail via processing:
http://www.shiffman.net/2007/11/13/e-mail-processing/

Yesterday, at home, it worked properly.

Today, at work, it can read mail but not send.

At home, i use a ethernet cable, at office I tried wireless and cable.

What can be the problem?

I use a macbook pro with mountain lion, procesing 1.5.1 and 2.0a8.

Thank you all-

parse a XML and remove portions with "matchAll"

[8 Replies]
- 01-Sep-2012 11:21 AM
- Forum: General Discussion
Hi all, i have a XML from which I would like to delete some portions, selected with matchAll function.
There is a way to return the original string without this portions?

Thank You all.

delete part of a string between two delimitation words?

[0 Replies]
- 31-Aug-2012 07:09 AM
- Forum: Programming Questions
Hi all, I'm working to extract text from wikipedia.
I'm not able to do it from the html, but wikipedia allow to export the page in xml.

Now, this is my code:
3. String xml_url = "http://en.wikipedia.org/wiki/Special:Export/Bauhaus";
5. void setup ()
6. {
7. XMLElement xml = new XMLElement( this, xml_url );
9. String s = xml.getChild("page/revision/text").getContent()
10. .replaceAll("\\[", "")
11. .replaceAll("\\]", "")
12. .replaceAll("\\{", "")
13. .replaceAll("\\}", "");
14. println( s);
16. }
The internal links in wikipedia are rappresented by the name with parentesis [[ link ]], and it's easy to remove them.

My problem is with reference: there is a way to delete all what is between "<ref>" and "</ref>"?

it is possible read and convert web pages into text strings?

[2 Replies]
- 26-Aug-2012 03:57 PM
- Forum: General Discussion
Hi all, a question about processing:
it is possible for processing to read som text from a webpage and transform it in a textstring?

And for example read just a specific paragraph from wikipedia to do automatic captions about things?

Thank you all.

possible to convert text in outlines?

[6 Replies]
- 23-Aug-2012 03:41 AM
- Forum: General Discussion
Hi all, I have two question:
1> there is some library for text analysis?

and, also very important:

2> there is a method to convert a text in outlines and then points? (to send it to a cnc via serial)

Thank you so much.

diagram with text, define how many times a print a character.

[1 Reply]
- 21-Aug-2011 09:07 AM
- Forum: General Discussion
Hello everyone, I want to generate a sort of simple diagrams with text only, then build the kind of horizontal columns withe bars.
so for example :

value 1: \\\3

value 2: \\\\\5

value 3: \\\\\\\\\\\11

value 4: \\\\\\6

value 5: \\\\\\\\\\10

there is a way to tell to processing to print, in a row, a character (like it "\") many times as it defined by a variable?

Thank you all, i hope my question was clear.

upload facebook status or send tweet...

[1 Reply]
- 19-Aug-2011 03:38 PM
- Forum: General Discussion
Hi all, I'm searching on the forum but i can't find a simple way to just post data or simple messages on the facebook wall or, if is easier, on twitter, via processing.
If possible, without be api developer.

Can you help me please?

map the skype audio with processing

[3 Replies]
- 02-Jul-2011 05:54 AM
- Forum: General Discussion
Hi all, does anyone know if is possible to map the skype's audio with processing?
Nothing too difficult, just to obtain a variable about generated by the volume.

Thank you all...

how to print data just a time every second with PrintWriter ?

[1 Reply]
- 09-Apr-2011 01:59 PM
- Forum: Programming Questions
Hi all, i'm using processing to visualize and log datas from arduino.
It print the data many time per second.

But how can i say to processing to print just a row per second?

Thank you all!

Log data on a csv file, is it possible?

[10 Replies]
- 07-Apr-2011 10:41 AM
- Forum: Programming Questions
Hi all, I have a processing sketch who visualize some data in real time, sent from arduino on the serial port.
How can I, at the same time, log it all on a csv file?

Thank you!

colours interpolation between points in a area...

[1 Reply]
- 06-Apr-2011 03:06 AM
- Forum: Programming Questions
Hi all, i would like how to obtain a color interpolation between point in a area, for example like in this video:

http://www.youtube.com/watch?v=k4h62jRiUcc

Thank you all!

processing don't recognize the shearX() function...

[3 Replies]
- 22-Mar-2011 11:49 AM
- Forum: Programming Questions
I have a problem: I try to execute the share(); function, but olso with the example of reported on the syte, just copied and pasted, it don't work... and i have the 1.2.1 version...
HELP

Send input to arduino and recive data at the same time?

[0 Replies]
- 22-Mar-2011 08:40 AM
- Forum: Integration and Hardware
Is it possible to use processing to send input to arduino and, at the same time, recive data?

how to create scrolling charts reading values from serial port?

[6 Replies]
- 21-Mar-2011 06:30 AM
- Forum: Programming Questions
Hi all, i would like to create a kind of scrolling chart, woth the data coming from my arduino.
Something like this...

Thank you all...

rotate a object proportionally to a variable... how can i do?

[4 Replies]
- 21-Mar-2011 05:24 AM
- Forum: Programming Questions
Hello everyone,
I have a little problem:
I would like to map a value read from the serial port by rotating, in this case, a svg in proportion to the value measured.
Something like the speedometer of a car.
The problem is that the command rotate (); adds degrees (radians) in each loop, to the number of degrees recognized in the precedents loops.

Example: if for two consecutive readings I have 60 degrees, I wish that the subject remained rotated at 60 degrees.
Instead the degrees becomes 120, then 180 and so on ...

I tried using a variable that subtract the old to the new survey, but without success.

How can I do?
Thanks

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