perlin_processing.jvm

int rows, cols;
int scl = 20;
int w = 2920; 
int h = 1080;

float flying = 0;

// 2d array in java
float[][] terrain;

void setup() {
  size(600, 600, P3D);

  cols = w / scl;
  rows = h / scl;
  terrain = new float[cols][rows];
  

}

void draw() {
  background(0);
  stroke(255);
  noFill();
  
  flying -= 0.1;
  
  float yoff = flying;
  for (int y = 0; y < rows; y++) {
    float xoff = 0;
    for (int x = 0; x < cols; x++) {
      terrain[x][y] = map(noise(xoff, yoff), 0, 1, -100, 100);
      xoff += 0.2;
    }
    yoff += 0.2;
  }
  
  // Translate relative to center
  translate(width/2, height/2+50);
  rotateX(PI/3);
  
  translate(-w/2, -h/2);    
  for (int y = 0; y < rows-1; y++) {
    beginShape(TRIANGLE_STRIP);
    for (int x = 0; x < cols; x++) {
      vertex(x*scl, y*scl, terrain[x][y]);
      vertex(x*scl, (y+1)*scl, terrain[x][y+1]);
      //rect(x*scl, y*scl, scl, scl);
    }
    endShape();
  }
}