Processing Forum

controlP5: controlEvent() problem with the new version

[4 Replies]
- 06-Oct-2010 08:05 AM
- Forum: Contributed Library Questions
Hi all!

I used to use an old controlP5 version whith some bugs I needed they to be fixed.

In the actual one (5.0.4), those bugs are fixed. So i'd like to use this one.

BUT I get troubles with it:

I have in my code (in the class Main which extends PApplet):
1. void controlEvent(ControlEvent theEvent) {
2. ...
3. }
This causes this error:

6 oct. 2010 16:56:32 controlP5.ControllerPlug set

ATTENTION: plug() failed.java.lang.NoSuchMethodException: main.Main.controlEvent(controlP5.ControlEvent)

If I remove all the function, no problem.

If I remove the argument (ControlEvent theEvent): Illegal argument exception.

Help please!

How to get automatically the photo I've juste token: Camera>USB>Computer?

[2 Replies]
- 29-Sep-2010 11:04 AM
- Forum: General Discussion
Hi!

I have an unusal question...

A'd like to know how to acquire a photo from a camera using USB.

In this way:

1) I take a picture (the camera is connected to my computer).

2) The photo is sended to the computer and used by my program.

And this WITHOUT any waste of time between 1 & 2.

How can it be possible?

ControlP5 Range: bug? problem when changing maxValue

[0 Replies]
- 26-Sep-2010 02:02 PM
- Forum: Contributed Library Questions
Hello,

I have a problem with RANGE of ControlP5:

1) I create a new Range, width 500, max=10.0, mavValue=10.0.

>> OK.

like this: [####################]

2) I change max to 100.0 (range.setMax(100.0); range.setHighValue(100);)

>> Now the foreground of the range is displayed 10x bigger (5000px) (but the 'width' keep the same).

like that: [####################]##############################################################...

Same problem if I change to a lower value, it's smaller.

It is a known bug? Did I forget something?

Can I fix it?

EDIT: YES it was a bug, fixed in the last version of ControlP5 (0.5.4).

Problem using save()

[3 Replies]
- 17-Sep-2010 07:13 AM
- Forum: Programming Questions
Hello all,

I can't find why, I create a PGraphics, I draw things on it, and when I use the save() function,

the colors are denatured, there is a blue halo...

EDIT: ONLY IF .JPG, png is ok.

but in the screen the PGraphics is ok.

From where could come the problem?

Here is an outpout example : (I removed the head of the man before, there is no white in the outpout image)

Sign an applet from Windows?

[0 Replies]
- 02-Sep-2010 07:06 AM
- Forum: Integration and Hardware
Hi,
I found a lot of docs saying "type keytool xxxxxxxxx and jarsigner ..."

(for example, http://wiki.processing.org/w/Sign_an_Applet : thanxs to forget that Windows exists too!)

Nowhere I can found a link to download "jarsigner".

SO, please help windows users :

could someone explain the steps to sign a jar file under Windows?

thx

edit: I fond that jarsigner & keytool are (for me) inside C:\Program Files\Java\jdk1.6.0_21\bin

I had to add this path to the path env variable to be able to use it with cmd.

So, the first steps are:

1) find the JDK folder (install it if you don't have)

2) change the windows environnement variable named "path" to ad the "bin" folder of jdk :

- Right click on "computer"

- System > Advanced (Advanced system parameters in Seven)

- Environnement variables

- Select "Path" in the second list and click on "Modify"

- add a semicolon (;) at the end and paste the url (for me: C:\Program Files\Java\jdk1.6.0_21\bin\)

3) The next time you'll use "cmd", you'll able to use "keytool" and "jarsigner"

Then, you can use them (I don't know how) or use this software: http://www.javafr.com/codes/JARSIGNER-SIGNEZ-VOS-ARCHIVES-RIEN-TEMPS_41972.aspx

Movie.init() or new Movie()?

[1 Reply]
- 30-Aug-2010 03:20 PM
- Forum: Core Library Questions
Hi!

In my program, I see that when I create a Movie, (m=new Movie(...))

while I don't close it using m.dispose(), the program is slow.

As I just need to read the video a few times, I guess I have to open and dispose the movie each time.

But I wondered what is the best to reopen the Movie (the same movie each time) :

m = new Movie(...) OR m.init(...) ? (or something better?)

And I don't know what args needs init...

I need the fastest way :)

thx!

unaccurate rotation! What can I do?

[5 Replies]
- 22-Aug-2010 10:59 AM
- Forum: Programming Questions
Hi!

I have a serious problem of rotation around a point :

It works but it is not enough accurate

I have this:
1. public /*abstract*/ class Renderable {
3. // variables
4. protected float w,h, cx,cy;
5. protected int rot;
7. public Renderable() {
8. cx=cy=0;
9. w=200;
10. h=100;
11. }
13. public void translate(float x, float y){
14. this.cx += x;
15. this.cy += y;
16. }
18. public void drawDecorationOn(PGraphics pg){
19. pg.pushMatrix();
20. pg.translate(cx, cy);
21. pg.rotate((float) (rot*PApplet.PI/180.));
22. pg.rect(-w/2, -h/2, w, h);
23. pg.popMatrix();
24. }
26. public void rotateDeg(int deg){
27. this.rot += deg;
28. }
30. public void rotateRad(double rad){
31. rotateDeg((int)(rad*180./PApplet.PI));
32. }
34. public void rotateDeg(int deg, float pivotX, float pivotY){
35. rotateRad((double)deg*PApplet.PI/180., pivotX, pivotY);
36. }
38. public void rotateRad(double rad, float pivotX, float pivotY){
39. this.cx = (float) ( Math.cos(rad)*(this.cx-pivotX) - Math.sin(rad)*(this.cy-pivotY) + pivotX);
40. this.cy = (float) ( Math.sin(rad)*(this.cx-pivotX) + Math.cos(rad)*(this.cy-pivotY) + pivotY);
41. rotateRad(rad);
42. }
43. }
But if I rotate around a point several times, it does a "spiral" instead of a "circle"...
(the distance between the point become smaller or bigger, depending on the angle).

As example, this code (30 degrees):
1. public class Main extends PApplet {
2. Renderable r;
4. public void setup() {
5. size(570, 650);
6. background(0);
8. r = new Renderable();
9. r.translate(200, 300);
10. r.rotateDeg(30);
11. }
13. public void draw() {
14. stroke(255);
15. noFill();
17. r.drawDecorationOn(g);
18. r.rotateDeg(30, 300f, 300f);
19. }
20. }
does
and with 91 degrees :

What's the problem?

How can I obtain a correct accuracy?

rotate() and smooth() : how to smooth the border of what is rotated?

[7 Replies]
- 12-Aug-2010 02:46 PM
- Forum: Programming Questions
Hello!

I really appreciate the smooth() function!

But I was afraid to see that when you use the rotate() func,

the rotation is smoothed but not the edges of the rect which is drawn!

ex: the border of the image is not smoothed.

// with:

PImage img = loadImage("animage.jpg");

smooth();
1. draw(){
2. translate(100,100);
3. rotate(0.5);
4. image(img,0,0);
5. }
How to fix that?

Is it possible to load PNG with alpha?

[2 Replies]
- 12-Aug-2010 02:39 PM
- Forum: Programming Questions
Hi!

This question is light but I didn't manage to find the answer by searching by myself :(

I just want to load PNG with its transparency...

Is there a way to do it?

With loadImage: no alpha...

I know the mask() function but anyway it needs to be able to read the alpha channel first...

help? :)

How to make images from a video

[6 Replies]
- 05-Aug-2010 10:28 AM
- Forum: Contributed Library Questions
Hi.

I'm using the video library (QT).

I want to extract some frames from the video and convert them to PImage.

I have a Movie m, that I read() after a jump().

I also have PImage[] img ;

I tried:

imgs[i] = m;

but if I display it in the draw() function, it reads the movie...

this is not correct:

imgs[i] = new PImage(m);

So my question is simple:

how to get a still PImage distinct from the movie?

thanks!

Activity Trend