I would like to click a button, the rectangle rotates, and at the same time the text shows the rotation value each time the button is being pressed. for example, when I pressed the button for one time, it will display -90, if I were to press the second time, it will display -180 and so on and so forth. I try putting in a for loop but apparently it is not correct.  

My syntaxes are as follow:

 import processing.opengl.*;

import controlP5.*;

 

ControlP5 controlP5;

Button button1;

 

float rotation;

String msg0 = "Rotated by: ";

 

void setup() {

  size(400, 400, OPENGL);

  controlP5 = new ControlP5(this);

  button1 = controlP5.addButton("Rotate", 1, 50, 50, 50, 50); 

  noStroke();

  rectMode(CENTER);

}

 

void draw() {

  background(0);

  pushMatrix();

  translate(width/2, height/2);

  rotateZ(rotation); 

  fill(255);

  rect(0, 0, 100, 150);

  popMatrix();

  

  fill(255);

  text(msg0, 200, 100);

}

 

void Rotate() 

{

  rotation -= PI/2;

  for (int i =0; i< 1000; i = i+90)

  println(i);

}

Thank you in advanced:D

hanny

I would like to rotate a rectangle 90 deg each time I press a button. 

Below are my syntaxes. 

I have played around for days to point the rectangle to the rotation but with no luck.

I have encountered errors such as "cannot convert void to int". 

I am kinda of noob to programming so pardon me if this is a trivial question. 

Thank you all in advanced:)

hanny 

How do I "activate" the dropdownlist? For instance, I have a dropdownlist name file, under file --> background color. When I select this background color, I want the change the background color from black to white. How do I go about doing that?

I know for a controlP5 button, for example a READ button, all I have to do is to create 

void READ()

{

      background(255);

}

But this does not work for a dropdownlist. I have checked and it was mentioned that dropdownlist has sth to do with the controllerevent but I still did not manage to comprehend it after playing with it for a long while. 

Thank you in advanced :D

hanny

I would like to check if PROCESSING supports declaration of a 3D canvas inside a GUI.

For instance, my GUI is size(400, 400);

I want my 3D canvas to be at centre of size (200, 200);

Right now, I realised that createGraphics() allows me to do that but I want to display my own 3D model in stl. (The createGraphics() example is great but does not allow me to display my own model ) 

On further digging, I realised modelbuilder and toxiclibs do support import of 3D model. However, their GUI is declared as 3D as a whole. For instance, size(400,400,OPENGL/P3D);

Is is possible to declare the 3D canvas inside the 2D GUI and have my model import at the same time?

Thank you all in advanced:D

hanny  

 

I would like to know how to display a file onto the textarea itself and have words typed onto the textarea and ouput to a text file.

I have seen the example under controlP5 textarea example but I cannot input anything on the textarea. 

Thank you for any advices in advance:D

hanny 

The example on import STl was straightforward and pretty useful to me. 

However, when I tried to open up others .STL file, the axis is not at the centre unlike the one in the examples.

I would like to ask if there are any command to shift the axis to the centre of the model I wanted to import?

additionally, please show me the light to other commands such as mouseroll forth and back so the model scale will increase and decrease respectively and when pressed shift button concurrently with the mouse, it will move left and right?

Thank you anyone for the advices in advanced:D

hanny  

I am currently working on a GUI which involves bluetooth with processing. 

I am thinking of having two purposes for the bluetooth involvement. 

The First Purpose

It searches, it retrieves and it saves whenever bluetooth is activated.( in this case, the button is being pressed on the       GUI). 

I have read through the examples by extrapixels for bluetooth with processing but I only manage to get the searches function to work. Below are my codes. 

The Second Purpose

 It will upload and download file continously.  I do understand that this can be achieved if I were to put an infinite loop in my codes such as a while loop, or for loop. However, I did not quite understand where to place such loop as I am a total beginner to programming not forgetting to mention processing as well.

Thank you in advanced:)

Regards,

hanny 

Has anyone successfully import STL file into processing's GUI.

I have seen the examples and they were all doing exporting into STL file format. 

I have come across this: 

public STL(processing.core.PApplet applet,java.lang.String path)

Constructor for loading STL files. Once loaded, draw() can be used to draw the geometry on the canvas.

Parameters: filename - Name of file to open.

Thank you in advanced to anyone in sharing that:)

Regards,
hanny

However, when running my code, the following is always encountered:

1) The opendialogbox will appear but do not always show its content in it and when this happen, it is hanged.

2) the opendialogbox with its content is shown, but when I cancel it, it hanged.

Basically, the GUI kept hanging! 

I am starting to realise I need some update frame function? which I am clueless of where to inject them.

 

The code is as shown below: