Average all X Values of a PShape?

bretm9

I am trying to find the approximate center of my 3d PShape. I think to find said vertex, I'd need to average all the x coordinates, average all the y coordinates, and average all the z coordinates to get the center x y z. How would I write a for loop that does this?

asimes

Always post your code when you have a discussion in Programming Questions

I made an example of how to find the average x position below (using PVectors), the code would just be repeated for y and z. Even if you are not using PVectors you should be able to use the same idea

void setup() {
  size(100, 100);

  final int NUM_THINGS = 100;

  // Random coordinates for 100 things
  PVector[] p = new PVector[NUM_THINGS];
  for (int i = 0; i < NUM_THINGS; i++)
    p[i] = new PVector(random(-10, 10), random(-10, 10), random(-10, 10));

  // Initialize the average for x (do this for y and z later)
  float averageX = 0.0;

  // Add up all the x
  for (int i = 0; i < NUM_THINGS; i++)
    averageX += p[i].x;

  // Divide by the number of things to get the average
  averageX /= NUM_THINGS;
}