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RFID read & write via processing?
[0Replies]
- 05-May-2013 09:34 AM
- Forum: Integration and Hardware
hey there,
I just came up with the idea to try some kind of RFID reading with processing.

The software you get with a Ehouyan RFID read/writer is - expecially for macs - still in its infancy…

I found some libraries and code examples from guys trying this before. But it seems like none of them are working with this reader ?

Can perhaps anyone here help me out who has some kind of script making reading (or writing) of rfid cars possible ?
I would also appreciate some tips & tricks :)

Would be greate :)

best regards,

How to fill a vertex with hash lines ?
[2Replies]
- 25-Jan-2013 09:51 AM
- Forum: Programming Questions
Hey guys,
I just wrote a script with some statistics in it and I don't like what it looks like when I just get this flat look a vertex normaly has…

I found a link to a "how to fill a ellipse with hashlines"
1. float startAngle;
  float density;
  float radius;
  void setup() {
  size(800,800);
  smooth();
  stroke(0);
  noFill();
  startAngle = PI/3;
  radius = 380;
  density = 0.01;
  }
  void draw() {
  background(255);
  startAngle = atan2(height/2-mouseY,width/2-mouseX);
  translate(width/2,height/2);
  noFill();
  stroke(0);
  strokeWeight(0.5);
  for(float i = -1; i <1;i+=density) {
      float angle = acos(i);
      line(cos(startAngle+angle)*radius,sin(startAngle+angle)*radius,cos(startAngle-angle)*radius,sin(startAngle-angle)*radius);
  }
  strokeWeight(1.5);
  ellipse(0,0,radius*2,radius*2);
  fill(220,220,0);
  stroke(255);
  for(float i = radius-10; i>0;i-= 15) {
      ellipse(0,0,i*2,i*2);
  }
  }
The filling of the outer ring is pretty much what I want the vertex to look like.
Is there anyone out there who perhaps already did this and can help me out ?

Best regards & thanks for your help…

Multiple String loading
[5Replies]
- 19-Nov-2012 01:11 PM
- Forum: Programming Questions
hey. I guess this is pretty simple but I don't get it anway :( Hopefully anyone can help me out with this:

When I want to load a textfile i have to add the breaks ( \n) happening here
2. for (int i=0; i < news.length; i++)
3. {
4. s += news[i] + "\n";
5. println (s);
6. }
Well this works perfectly as long as I got only one textfile. My problem is that I now have about 15 files and I don't want to start my script with 15 times for…

Is there a way I can compress it in 2 for loops, my idea was:
3. for ( int j=0;j < 15; j++)
4. {
5. for (int i=0; i < news[j].length; i++)
6. {
7. s[j] += news[j][i] + "\n";
8. println (s[j]);
9. }
But this couldn't work because "s" isn't an array…

is there something I can do to get this to work?

best regards

Custom Cursor in 3D ?
[13Replies]
- 13-Jul-2012 06:08 PM
- Forum: Programming Questions
Hey,
sorry for posting all this (silly?!) questions but I can't even find an answer via google (just for processing alpha and this doesn't seem to work…)

I want a custom cursor in a 3D processing script, in 2D everything went well, code:
2. void setup () {
5. size(300, 300);
6. }
9. void draw () {
10. noCursor();
11. background (255);
12. KREUZ(mouseX, mouseY);
13. }
17. void KREUZ (int x, int y)
18. {
19. line (x-(width+x), y, x+(width-x), y); //KREUZ X achse
20. line (x, y-(height+y), x, y+(height-y)); //KREUZ y achse
21. }
I also tried to generate the cross in a .svg and load it as cursor(cross.svg)

in both variations I have the same problem:
as soon as i put it outside of the push popMatrix() which sets up my object it lies BEHIND it … not in front …

sounds like a simple problem but I don't get it neither…

thanks a lot for your help again…

Connecting zoom and object size ?
[10Replies]
- 13-Jul-2012 02:12 PM
- Forum: Programming Questions
Hey,
I got another question relating to the script I posted yesterday:

I have a map and I'm able to zoom in + out.
Now I have some popups you can push up when you click on diffrent places in the card.

The Problem:

When I'm zoomed in you can't see the popups anymore because they have a fixed size. Is there anyway I can scale it down/up when I'm zoomed ?

the zoom is generated here:
2. void mouseWheel(int delta) {
3. zoom = zoom+=delta;
the map is translated by:
1. translate(0, 0, zoom);
zoom is 400 when you start the programm.

I think the problem is that the popup is a class… That's why the translate doesn't affect the popup ( the popup.generate code is mentioned in another class!)

perhaps anyone can help me out with that :) Would be pretty great :)

Thanks a lot

cheers

Expecting RCURLY found 'if' error ?!
[6Replies]
- 12-Jul-2012 11:57 AM
- Forum: Programming Questions
Hey guys,
I hope this is the right threat to post this question (I'm new to this forum)…

I have this script and it went well for a few tries but I think I added some strange things and no it gives me the error mentioned above …
2. class Popup{
4. String standort,art;
5. float preis;
6. int koordx;
7. int koordy;
8. float preis_vorge,preis_geste,preis_heute;
10. Popup(String ort,String oil,float price1, float price2, float price3, int x, int y)
11. {
12. standort=ort;
13. art=oil;
14. preis_vorge=price1;
15. preis_geste=price2;
16. preis_heute=price3;
17. koordx= x;
18. koordy= y;
19. }
21. void generate(){
22. noStroke();
23. fill(128,205,225,255);
24. rectMode(CORNER);
25. rect (koordx,koordy,180,-200);
26. triangle(koordx,koordy,koordx+30,koordy,koordx,koordy+30);
27. //
30. fill(255);
31. textFont(font);
32. textMode(CORNER);
33. textSize(12);
34. text("Name der Tankstelle: " + standort,koordx+5,koordy-180);
35. text(art + "preis Vorgestern: ",koordx+5,koordy-160);
36. fill(120);
37. text(preis_vorge + "€");
38. fill(255);
39. text(art + "preis Gestern: ",koordx+5,koordy-140);
40. //+-=
41. if (preis_geste<preis_vorge)
42. { fill(0,255,0);
43. }
44. if (preis_geste == preis_vorge)
45. {
46. fill(255,255,0);
47. }
48. if (preis_geste>preis_vorge)
49. {
50. fill(255,0,0);
51. }
52. text(preis_geste + "€");
53. fill(255);
54. //ende
55. text(art + "preis Heute: ",koordx+5,koordy-120);
56. //+-=
57. if (preis_heute<preis_geste)
58. { fill(0,255,0);
59. }
60. if (preis_heute == preis_geste)
61. {
62. fill(255,255,0);
63. }
64. if (preis_heute>preis_geste)
65. {
66. fill(255,0,0);
67. }
68. text(preis_heute + "€");
69. fill(255);
70. //ende
71. //
72. }}
Hope anyone can help me :)

Thanks a lot !

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