diff options
Diffstat (limited to 'source/blender/blenlib/BLI_polyfill_2d_beautify.h')
| -rw-r--r-- | source/blender/blenlib/BLI_polyfill_2d_beautify.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_polyfill_2d_beautify.h b/source/blender/blenlib/BLI_polyfill_2d_beautify.h index 2c5296269ae..b0b97336a3b 100644 --- a/source/blender/blenlib/BLI_polyfill_2d_beautify.h +++ b/source/blender/blenlib/BLI_polyfill_2d_beautify.h @@ -27,6 +27,12 @@ extern "C" { struct Heap; struct MemArena; +/** + * The intention is that this calculates the output of #BLI_polyfill_calc + * \note assumes the \a coords form a boundary, + * so any edges running along contiguous (wrapped) indices, + * are ignored since the edges won't share 2 faces. + */ void BLI_polyfill_beautify(const float (*coords)[2], const unsigned int coords_tot, unsigned int (*tris)[3], @@ -35,6 +41,21 @@ void BLI_polyfill_beautify(const float (*coords)[2], struct MemArena *arena, struct Heap *eheap); +/** + * Assuming we have 2 triangles sharing an edge (2 - 4), + * check if the edge running from (1 - 3) gives better results. + * + * \param lock_degenerate: Use to avoid rotating out of a degenerate state: + * - When true, an existing zero area face on either side of the (2 - 4 + * split will return a positive value. + * - When false, the check must be non-biased towards either split direction. + * \param r_area: Return the area of the quad, + * This can be useful when comparing the return value with near zero epsilons. + * In this case the epsilon can be scaled by the area to avoid the return value + * of very large faces not having a reliable way to detect near-zero output. + * + * \return (negative number means the edge can be rotated, lager == better). + */ float BLI_polyfill_beautify_quad_rotate_calc_ex(const float v1[2], const float v2[2], const float v3[2], |