Title: My Bachelor Thesis ? Fractal Mountains revisited Post by: cKleinhuis on April 29, 2010, 07:29:43 PM hi there, i planning to write my bachelor thesis about this method, invented by me, the thesis will deal with pro and cons of the method,
here a little peak, and i am very intrested on your opinion on this thesis: we all know the classig BERG algorithm to create mountain scapes, here demonstrated in 2d: 1. take the midpoint of a line and move it randomly a certain amount up or down 2. repeat with each new created line with step 1 the result is a mountain or hilly like shape: http://digitalgott.de/transfer/bachelor/mountains_8iterations.swf (click on image to regenerate) but the above image has some serious drawbacks, so it has no right angles, caves or advances so, i have a slight modification to the original algorithm: 1. take the midpoint of a line and move it by a random amount in the direction of the normal 2. repeat with each new created line with step 1 here is a 2d implementation of this method, but my work aims to use it on 3d planes ... http://digitalgott.de/transfer/bachelor/mountains_10iterations.swf (click on image to regenerate) what do you think ? i need to convience my prof ;) Title: Re: My Bachelor Thesis: Fractal Mountains revisited Post by: bib on April 29, 2010, 07:34:04 PM My first impression is that the second one looks less realistic than the first one, because of the horizontal small peaks. Maybe a combination of both would do better?...
Or instead of using the normal between 2 points, use the normal between 2 more distant points, so that makes a kind of average. Title: Re: My Bachelor Thesis: Fractal Mountains revisited Post by: reesej2 on April 29, 2010, 07:37:59 PM The second image looks a little "squashed" but I'd guess that's just a matter of calibrating the parameters. You may want to make the horizontal distortions less common. I'd like to see a 3D rendering.... maybe I'll give it a shot myself.
What were you planning on discussing in your thesis? A mathematical perspective (fractal dimension, correlation to real mountains, etc) or a computational one (order of complexity, ease of rendering, etc)? Or some combination of the two? Title: Re: My Bachelor Thesis: Fractal Mountains revisited Post by: cKleinhuis on April 29, 2010, 07:50:38 PM as a bachelor thesis i think it will contain an implementation and a comparison to classic method, but i dont know yet, it is just one of the themes i would actually love to write about ;)
the parameters indeed must be tweaked a little, but i believe the second one has after a few sure surrealistic formations a better outline of a mountainvies, e.g. compare it to a foto: (http://www.weltum.de/weltum/img/alpen_matterhorn.jpg) in that image are also small advances, and those can not be displayed using a height map but i agree that there are to sharp gaps, this should be handled by an angles/max value my personal aim is to generate visually more attractive computer generated landscapes ;) Title: Re: My Bachelor Thesis ? Fractal Mountains revisited Post by: Nahee_Enterprises on April 30, 2010, 01:23:25 PM The first example seems more realistic to me than the second one. And I found it interesting that I could click anywhere inside of the second one to get it to create another pattern. But I could only click within the gray "mountain" area of the first one, because the white "sky" area would not cause a new pattern to be generated. |