e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
#pragma once
|
|
|
|
/** \file
|
|
* \ingroup bli
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
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],
|
|
unsigned int coords_num,
|
|
unsigned int (*tris)[3],
|
|
|
|
/* structs for reuse */
|
|
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],
|
|
const float v4[2],
|
|
bool lock_degenerate,
|
|
float *r_area);
|
|
#define BLI_polyfill_beautify_quad_rotate_calc(v1, v2, v3, v4) \
|
|
BLI_polyfill_beautify_quad_rotate_calc_ex(v1, v2, v3, v4, false, NULL)
|
|
|
|
/* avoid realloc's when creating new structures for polyfill ngons */
|
|
#define BLI_POLYFILL_ALLOC_NGON_RESERVE 64
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|