Hello.

So I have a folder that I will load pictures from my camera throug the Ardunio board into my computer. So each time there is a new picture in the folder I want to put it in the grid so it will show up like Live feed.

I have found out how to upload pictures from a folder. Thanks to code that was here on the froum.

And that I have manage to make so it will refresh the hole grid system. every x amount of time.

This the code I have so far.

Code:

import processing.pdf.*;

int posterWidth = 875;
int posterHeight = 1225;
int rows = 50;
int colls = 100;

int Check = 10000;
int LastCheck = 0;



void setup()
{
  size(posterWidth, posterHeight);
  beginRecord(PDF, "PIG-###.pdf");

}

void draw(){

  File path= sketchFile("pictures");
  File[] files = path.listFiles();
  
  int imgWidth = posterWidth / rows;
  int imgHeight = posterHeight / colls;

  if(millis() - LastCheck > Check){

    int index = 0;

    for(int y=0; y < colls; y++)
    {
      for(int x = 0; x < rows; x++)
      {
        if(index >= files.length) break;

        PImage img = loadImage(files[index].getAbsolutePath());
        img.resize(imgWidth,imgHeight);
        image(img, x * imgWidth, y * imgHeight);
        println("place @ " + (x * imgWidth));
        index++;
      }
    }

    LastCheck=millis();
  }

  endRecord();
}
 

This just refreshes the poster about every 2 min, but it takes alot of time to upload the images.

So I was wondering if there is a way to tell the program that if the files that are in the folder now are more then last time then take the new files and upload them in the grid ?

Thank you for the answear.

I have come a litttle further with my code and now it dosen't and just takes the amount of images that is new (but it takes the picture that is last in the folder, but that have worked for me).

But now I have a new problem, because each pictures starts with always at the beginning. But not after the last picture.

I'll put in the code how it looks now.
Code:

import processing.pdf.*;

int posterWidth = 875;
int posterHeight = 1225;
int rows = 50;
int colls = 100;

int Check = 10000;
int LastCheck = 0;
int xoff =0;
int index = 0;



void setup()
{
  size(posterWidth, posterHeight);
  beginRecord(PDF, "PIG-####.pdf");

}

void draw(){
  

  
  File path= sketchFile("pictures");
  File[] files = path.listFiles();
  
  int imgWidth = posterWidth / rows;
  int imgHeight = posterHeight / colls;
  

  
  if(millis() - LastCheck > Check){
  
    
    if(files.length > + index){
	
    for(int y=0; y < colls; y++)
    {
	for(int x = 0; x < rows; x++)
	{
	  if(index >= files.length) break;
	  
	  
	  PImage img = loadImage(files[index].getAbsolutePath());
	  img.resize(imgWidth,imgHeight);
	  image(img, (x * imgWidth) + xoff, y * imgHeight);
	  println("place @ " + (x * imgWidth));
	  index++;
	  xoff = ((x * imgWidth) + imgWidth);
	}
	
	index=files.length;
    }
    
    }

    LastCheck=millis();
  }

  endRecord();
} 

I was trying make xoff to tell the program to start at X place.

And was hoping that makeing

xoff = ((x * imgWidth) + imgWidth);

would change the value of int xoff.

I have no idea what I'm doing wrong, or if there is a better method or even if I'm doing it right