XYZ + RGB from array

nojdekl

Hi, Any hint how this piece of code make better? Thanks to iainmaxwell tutorial I made simple diagram, but for every color I'm using extra loop and void. Can anybody give me any hint how to read r/g/b from csv and add to single loop?

ArrayList pointListedu1; // arraylist to store the points in
ArrayList pointListedu2;   
 

void setup() {
  size(1000, 500, OPENGL);
  background(255);

 
  pointListedu1 = new ArrayList();    // instantiate an ArrayList
  importTextFileedu1();               // call our custom function
  pointListedu2 = new ArrayList();    
  importTextFileedu2();   


void draw() {

  //-------------------------------- GENERAL
  background(0,0,50);
  lights();
  stroke(110);
        
  //-------------------------------- VISUALIZE THE POINT SET

     
        stroke(255, 215, 0);        // gold 
        for (int i = 0; i < pointListedu1.size (); ++i) {        
        PVector V = (PVector) pointListedu1.get(i);
        ellipse(V.x, V.y, 0.1, 0.1);
}        
        stroke(255, 165, 0);        // orange
        for (int i = 0; i < pointListedu2.size (); ++i) {        
        PVector V = (PVector) pointListedu2.get(i);
        ellipse(V.x, V.y, 0.1, 0.1);
}        


void importTextFileedu1() {  

  String[] strLines = loadStrings("edu1.txt"); // the name and extension of the file to import!

  for (int i = 0; i < strLines.length; ++i) {
    String[] arrTokens = split(strLines[i], ',');       // use the split array with character to isolate each component
    float xx = float(arrTokens[0]);                     // cast string value to a float values!
    float yy = float(arrTokens[1]);                     // cast string value to a float values!
    float zz = float(arrTokens[2]); 

    pointListedu1.add( new PVector(xx, yy, zz) );             // add values to a new array slot
  }
}
void importTextFileedu2() {  

  String[] strLines = loadStrings("edu2.txt"); // the name and extension of the file to import!

  for (int i = 0; i < strLines.length; ++i) {
    String[] arrTokens = split(strLines[i], ',');       // use the split array with character to isolate each component
    float xx = float(arrTokens[0]);                     // cast string value to a float values!
    float yy = float(arrTokens[1]);                     // cast string value to a float values!
    float zz = float(arrTokens[2]); 

    pointListedu2.add( new PVector(xx, yy, zz) );             // add values to a new array slot
  }
}

GoToLoop

By chance you meant a general loadCoordsFile() method which returns a List<PVector>? 8-|

// forum.processing.org/two/discussion/9216/xyz-rgb-from-array

import java.util.List;

List<PVector> loadCoordsFile(String path, char delim) {
  String[] lines = loadStrings(path);
  assert lines != null : "\"" + path + "\" wasn't found!";

  List<PVector> vecs = new ArrayList<PVector>(lines.length);

  for (int i = 0; i != lines.length; ++i) {
    float[] coords = float(split(lines[i], delim));

    float x = coords.length > 0? coords[0] : 0;
    float y = coords.length > 1? coords[1] : 0;
    float z = coords.length > 2? coords[2] : 0;

    vecs.add(new PVector(x, y, z));
  }

  return vecs;
}

static final String NAME = "edu", EXT = ".txt";
static final int QTY = 2;
final List<PVector>[] points = new List[QTY];

void setup() {
  size(1000, 600, P3D);
  smooth(8);
  frameRate(60);
  strokeWeight(4);

  for (int i = 0; i != QTY; points[i++] =
    loadCoordsFile(NAME + i + EXT, ','));

  printArray(points);
}

void draw() {
  background(0, 0, 50); // dark indigo
  lights();

  stroke(255, 215, 0); // gold
  for (PVector v : points[0])  point(v.x, v.y, v.z);

  stroke(255, 165, 0); // orange
  for (PVector v : points[1])  point(v.x, v.y, v.z);
}