Terrains, where to start?

redraw

Hello guys, i would like to dig into terrains. I need to start with something simple, using noise, low resolution terrains.

Where do you recommend me to start from?

amnon

Searching OpenProcessing.org

TfGuy44

Here's a start. There's so many ways to improve on this. So. Many. Ways. So customize it towards what you want. Because what you're asking right now is pretty vague.

void setup() {
  size(400, 400, P3D);
}

void draw() {
  background(0);
  translate(width/2, height/2);
  rotateY(map(mouseX, 0, width, -PI, PI));
  rotateX(map(mouseY, 0, height, -PI, PI));
  scale(150);
  noFill();
  stroke(255);
  box(1);
  for (float x = -.5; x < .5; x+=.1) {
    for (float y = -.5; y < .5; y+=.1) {
      pushMatrix();
      translate(0, 0, -.5);
      translate(x, y, noise(x+.5, y+.5));
      scale(.1);
      fill(255*noise(x+.5, y+.5));
      noStroke();
      box(1);
      popMatrix();
    }
  }
}

Chrisir

this works better for me

without line 13

void setup() {
  size(400, 400, P3D);
}

void draw() {
  background(0);
  translate(width/2, height/2);
  rotateY(map(mouseX, 0, width, -PI, PI));
  rotateX(map(mouseY, 0, height, -PI, PI));
  scale(150);
  noFill();
  stroke(255);
  // box(1);
  for (float x = -.5; x < .5; x+=.1) {
    for (float y = -.5; y < .5; y+=.1) {
      pushMatrix();
      translate(0, 0, -.5);
      translate(x, y, noise(x+.5, y+.5));
      scale(.1);
      fill(255*noise(x+.5, y+.5));
      noStroke();
      box(1);
      popMatrix();
    }
  }
}

redraw

thanks!! I looked at openprocessing.org, however since Java was updated it never worked as well as before (changing Secury level also).

I've never thought about using boxes, that's looks good. I was also wondering about the classic terrain grid. This articule talks about the concepts.

TfGuy44

A grid is just drawing lines from the centers of one box to the centers of the boxes next to it. That's one of the many improvements you could make.

Of course, you could go with a surface too. That could be rendered with lots of triangles.

redraw

So should I use Delaunay triangulation for that purpose? I don't know where to start :/...

mschi

you could use the terrain class in the toxiclibs lib: http://toxiclibs.org/tag/terrain/ http://toxiclibs.org/docs/core/toxi/geom/mesh/Terrain.html

this makes it pretty easy. all that is left is calculating height values. perlin noise is perfect for that.

othr option: check out this demo code out of the generative design book: http://www.generative-gestaltung.de/M_1_4_01

asimes

@redraw, a few years ago I used that same article to make mountains in Processing. The results can be quite nice, especially with lights.

I was going to send a link to it running in the browser but it seems like my browsers are not allowing Java… there are images of some results here, I was not going for realistic colors in most of them: http://alexsimes.com/index.php?foo=visual programming&bar=fractal mountains

Chrisir

// deleted

asimes

@Chrisir, maybe make a new thread, otherwise I'd be happy to respond by email

Chrisir

I started a new thread -

http://forum.processing.org/two/discussion/4161/chess-ai

Thank you!

redraw

Thanks a lot guys!