My Code

import peasy.*;

int MODEL_SPHERE = 1;
int MODEL_CUBE = 2;
boolean lights = false;
PeasyCam cam;

ArrayList<Model> view;
ArrayList<Material> materials;


void setup() {
  view = new ArrayList<Model>();
  materials = new ArrayList<Material>();
  cam = new PeasyCam(this, 800);
  noStroke();
  view.add(new Model(MODEL_SPHERE));
  materials.add(new Material(loadImage("data/earth.jpg")));
  view.get(0).wrap(materials.get(0));
}
void settings() {
  size(800, 600, P3D);
}
void draw() {
  background(51);
  if(lights) {
    lights();
  }
  fill(255);
  for(Model m: view) {
    m.show();
  }
}

void keyPressed() {
  if(key == 'a') {
    lights = !lights;
  }
  if(key == 'l') {
    view = new ArrayList<Model>();
    materials = new ArrayList<Material>();
    String[] data;
    data = loadStrings("save.mso");
    boolean ino = false;
    int type = 0;
    PVector[] vertexes = new PVector[0];
    color[] image;
    Model t_model = new Model();
    for(int i = 0; i < data.length; i++) {
      if(data[i].equals("Model")) {
        ino = true;
        type = 1;
      }
      if(data[i].equals("end_model")) {
        t_model.vector_construct(vertexes);
        view.add(t_model);
        vertexes = new PVector[0];
      }
      if(ino && data[i].equals("vertex") && type == 1) {
        vertexes = (PVector[]) append(vertexes, new PVector(float(data[i+1]), float(data[i+2]), float(data[i+3])));
      }
      if(data[i].equals("use_material")) {
        if(getMaterial(data[i+1]) != null) {
          t_model.wrap(getMaterial(data[i+1]));
        } else {

        }
      }
    }
  }
  if(key == 'c') {
    view = new ArrayList<Model>();
    materials = new ArrayList<Material>();
  }
  if(key == 's') {
    PrintWriter file = createWriter("save.mso");
    for(Material m: materials) {
      file.println("Material");
      file.println(m.label);
      file.println("Size");
      PImage im = m.img;
      file.println(im.width);
      file.println(im.height);
      im.loadPixels();
      for(int i = 0; i < im.pixels.length; i++) {
        file.println("Pixel");
        file.println(red(im.pixels[i]));
        file.println(blue(im.pixels[i]));
        file.println(green(im.pixels[i]));
      }
      file.println("End Material");
    }
    for(Model m: view) {
      PShape obj = m.object;
      file.println("Model");
      if(m.m != null) {
        file.println("use_material");
        file.println(m.m.label);
      }
      for(int i = 0; i < obj.getVertexCount(); i++) {
        PVector v = obj.getVertex(i);
        file.println("vertex");
        file.println(v.x);
        file.println(v.y);
        file.println(v.z);
      }
      file.println("End Model");
    }
  }
}

String generateRandomString() {
  String s = "";
  for(int i = 0; i < 16; i++) {
    char c = (char) int(random(33, 127));
    s += c;
  }
  return s;
}

Material getMaterial(String l) {
  Material m = null;
  for(Material mi: materials) {
    if(mi.label.equals(l)) {
      m = mi;
    }
  }
  return m;
}

class Material {
  PImage img;
  String label;

  Material(PImage i) {
    img = i;
    label = generateRandomString();
  }
  Material(PImage i, String l) {
    img = i;
    label = l;
  }
}

class Model {
  PVector pos;
  PShape object;
  Material m = null;

  Model() {

  }
  Model(int type) {
    pos = new PVector(0, 0, 0);
    object = new PShape();
    if(type == 1) {
      object = createShape(SPHERE, 100);
    } else if(type == 2) {
      object = createShape(BOX, 100);
    }
  }
  Model(PVector[] vectors) {
    pos = new PVector(0, 0, 0);
    object = new PShape();
    object.beginShape();
    for(int i = 0; i < vectors.length; i++) {
      object.vertex(vectors[i].x, vectors[i].y, vectors[i].z);
    }
    object.endShape();
  }
  void show() {
    pushMatrix();
    translate(pos.x, pos.y, pos.z);
    shape(object);
    popMatrix();
  }
  void wrap(Material m) {
    object.setTexture(m.img);
    this.m = m;
  }
  void vector_construct(PVector[] vectors) {
    pos = new PVector(0, 0, 0);
    object = new PShape();
    PShape temp = new PShape();
    object.beginShape();
    for(int i = 0; i < vectors.length; i++) {
      object.vertex(vectors[i].x, vectors[i].y, vectors[i].z);
    }
    object.endShape();
  }
}