1 metasurf - a library for implicit surface polygonization

2

3 http://nuclear.mutantstargoat.com/sw/metasurf

4

5 1. Overview

6 -----------

7

8 Metasurf is a library for implict surface polygonization. You only need to

9 set a callback that returns the scalar field value at any given point in

10 3-space, and another callback to accept isosurface vertices. Then at any point

11 just call msurf_polygonize, and the library handles everything else for you.

12

13 2. Usage

14 --------

15 The following snippet is sufficient to draw the surface of an implicit unit

16 sphere, centered around the origin.

17

18 struct metasurface *ms;

19

20 /* initialization */

21 ms = msurf_create();

22 msurf_eval_func(ms, eval);

23 msurf_vertex_func(ms, glVertex3f);

24

25 /* drawing */

26 glBegin(GL_TRIANGLES);

27 msurf_polygonize(ms);

28 glEnd();

29

30 /* evaluator */

31 float eval(float x, float y, float z)

32 {

33 return (x * x + y * y + z * z) - 1.0;

34 }

35

36 See the examples subdirectory for more examples.

37

38 3. License

39 ----------

40 Copyright: John Tsiombikas <nuclear@member.fsf.org>

41

42 Metasurf is free software, you may use, modify, and redistribute it freely under

43 the terms of the GNU Lesser General Public License (LGPL) v3 (or at your option,

44 any later version published by the Free Software Foundation). See COPYING and

45 COPYING.LESSER for more details.

46

47

48 4. Contributions

49 ----------------

50 If you'd like to fix the marching tetrahedra implementation or have any other

51 ideas for improving this library drop me an email at: nuclear@member.fsf.org.

52 Also feel free to submit patches for bugfixes.