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Index › Programming Questions & Help › Syntax Questions › scale a pixel

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scale a pixel (Read 878 times)

CyberCulture. YaBB Newbies Offline Posts: 13	scale a pixel Apr 7^th, 2010, 3:22pm Hello, I created a 15x15 matrix writing pixels one by one with set() - I want to scale my pixels on my screen..means to make them bigger in dimensions so they are more visible..please help.. Any hint highly appreciated.

Cedric YaBB Moderator Offline Posts: 1838	Re: scale a pixel Reply #1 - Apr 7^th, 2010, 11:28pm you can create an new image using get http://processing.org/reference/get_.html and then just redraw it and scale it. http://processing.org/reference/image_.html
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PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: scale a pixel Reply #2 - Apr 8^th, 2010, 1:02am Use rect() where you use set(), with proper spacing of course.

CyberCulture.

Re: scale a pixel
Reply #3 - Apr 8^th, 2010, 3:20am

thanks for the nice replies, I just added the rect() in the code that creates my image from serial data but it doesn't seem to update. My code with set() works fine...can u help me debug?thanks a lot in advance..
Code:

import processing.serial.*;
Serial port;
int x=0;
int y=0;
int i=0;   
 
void setup(){
     size(200,200);

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

void draw() {
     delay(500);
     while (port.available() > 0) {
      
       int inByteRED = port.read();
       println(inByteRED);
       delay(500);
       int inByteGREEN = port.read();
       println(inByteGREEN);
       delay(500);
       int inByteBLUE = port.read();
       println(inByteBLUE);
       delay(500);
       
       color c = color(inByteRED, inByteGREEN, inByteBLUE);
       
       set(x, y, c);
       
       fill(c);
       rect(30, 20, 55, 55);
       
       x ++;
       
       if (x > 14) {x = 0; y++;}
       if (y == 15) {noLoop();}      
       
    }
}

Cedric YaBB Moderator Offline Posts: 1838	Re: scale a pixel Reply #4 - Apr 8^th, 2010, 3:27am cant test your code, but you have to add the x and y to your rect. something like that. rect(xrectSize,yrectSize,rectSize,rectSize);
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CyberCulture.

Re: scale a pixel
Reply #5 - Apr 8^th, 2010, 3:55am

Hello,
thanks a lot for the answer..
I add the x,y to the rect() but no result...while set() works fine.Below is the code which is supposed to draw 5x5 rectangles...When I place it outside of (port.available() > 0) {} function the rect is drawn once but the color and the rect do not update...any idea?thanks a lot..

Code:

import processing.serial.*;
Serial port;
int x=0;
int y=0;
int i=0;   
 
void setup(){
     size(200,200);

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

void draw() {
     delay(500);
     while (port.available() > 0) {
      
       int inByteRED = port.read();
       println(inByteRED);
       delay(500);
       int inByteGREEN = port.read();
       println(inByteGREEN);
       delay(500);
       int inByteBLUE = port.read();
       println(inByteBLUE);
       delay(500);
       
       color c = color(inByteRED, inByteGREEN, inByteBLUE);
       
       set(x, y, c);
       
       fill(c);
       rect(x, y, 5, 5);

       x+=5;
       
       if (x > 14*5) {x = 0; y+=5;}
       if (y == 15*5) {noLoop();}      
       
    }
}

CyberCulture. YaBB Newbies Offline Posts: 13	Re: scale a pixel Reply #6 - Apr 8^th, 2010, 4:12am the code above WORKS fine!!thanks!! but I have to minimize and reopen my window to see the new pixels that are coming from the array..that 's why I couldn't see anything before.. I miss an update function somewhere..any ideas? thanks in advance

PhiLho YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: scale a pixel Reply #7 - Apr 8^th, 2010, 4:52am Don't loop inside draw(), use draw() as a loop, since it is called repeatedly. If you do several updates in the same draw() call, you will only see the last one.

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