Stuck with SIZE command

[sljivan]

Hello guys.
I am trying to control my servo with Processing. And it actually works.
But I wanted to fool around with the code a bit to get a grip off it, and I started changing a tutorial code a bit.
And I ran into a wall which I can not figure out.

Originally window size is (256x150) and I have tryed to change it. When I expanded or shrunk the Y axis, it was all good.
But when I expanded the X axis the problems occurred whether I was shrunk it or expanded it. It gave me a border inside the window, and when I crossed it with mouse, the servo jumped back to 0 position, telling me that it mouseX read a 0 again, though I haven’t reached the end of my window.

This is my code:

import processing.serial.*;
Serial port;

void setup() {
size(300, 300);

println("Available serial ports:");
// if using Processing 2.1 or later, use Serial.printArray()
println(Serial.list());

port = new Serial(this, Serial.list()[1], 9600);

}

void draw() {
// draw a gradient from black to white
for (int i = 0; i < 300; i++) {
// color
stroke(i);
// x1 y1 x2 y2
line(i, 0, i, 300);
}

I have altered my Arduino code, and it works OK. It seems that I ran into some sort of boundary in Processing.
Anyone knows what I did wrong?

Picture depicts, how my window looks like.

[TfGuy44]

The problem has got to be something related to the fact that you are using a single byte to communicate. With one byte, the values that byte can represent range from 0 (0x00000000) to 255 (0x111111111). If you try to store more than 255 in a byte, it wraps around, back to 0, because it can only copy the lowest 8 bits!

[sljivan]

@TfGuy44 thank you for your reply. I was so excited about your anser that I tried it immediately.
I have done the following:

import processing.serial.*;
Serial port;
int mousepos;

and also:

mousepos=mouseX;
port.write(mousepos);

so I have made it an integer. Still, I face the same problem.

[TfGuy44]

You should be able to write ints.

https://processing.org/reference/libraries/serial/Serial_write_.html

Can we see your full code?

[sljivan]

there it is:

import processing.serial.*;
Serial port;
int mousepos;

void setup() {
size(300, 150);

println("Available serial ports:");
// if using Processing 2.1 or later, use Serial.printArray()
println(Serial.list());

// Uses the first port in this list (number 0). Change this to select the port
// corresponding to your Arduino board. The last parameter (e.g. 9600) is the
// speed of the communication. It has to correspond to the value passed to
// Serial.begin() in your Arduino sketch.
port = new Serial(this, Serial.list()[1], 9600);

// If you know the name of the port used by the Arduino board, you can specify
// it directly like this.
//port = new Serial(this, "COM1", 9600);

}

void draw() {
// draw a gradient from black to white
for (int i = 0; i < 300; i++) {
// color
stroke(i);
// x1 y1 x2 y2
line(i, 0, i, 150);
}

// write the current X-position of the mouse to the serial port as
// a single byte
mousepos=mouseX;
port.write(mousepos);

}

on the arduino side I have also turned all variables into integers.
@TfGuy44 - Thanks man!