a12a8a71bb
The goal is to solve confusion of the "All rights reserved" for licensing
code under an open-source license.
The phrase "All rights reserved" comes from a historical convention that
required this phrase for the copyright protection to apply. This convention
is no longer relevant.
However, even though the phrase has no meaning in establishing the copyright
it has not lost meaning in terms of licensing.
This change makes it so code under the Blender Foundation copyright does
not use "all rights reserved". This is also how the GPL license itself
states how to apply it to the source code:
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software ...
This change does not change copyright notice in cases when the copyright
is dual (BF and an author), or just an author of the code. It also does
mot change copyright which is inherited from NaN Holding BV as it needs
some further investigation about what is the proper way to handle it.
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2018 Blender Foundation */
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/** \file
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* \ingroup bke
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*/
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#pragma once
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#include "BLI_assert.h"
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#include "BLI_compiler_compat.h"
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#include "BKE_subdiv.h"
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BLI_INLINE void BKE_subdiv_ptex_face_uv_to_grid_uv(const float ptex_u,
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const float ptex_v,
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float *r_grid_u,
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float *r_grid_v)
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{
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*r_grid_u = 1.0f - ptex_v;
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*r_grid_v = 1.0f - ptex_u;
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}
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BLI_INLINE void BKE_subdiv_grid_uv_to_ptex_face_uv(const float grid_u,
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const float grid_v,
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float *r_ptex_u,
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float *r_ptex_v)
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{
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*r_ptex_u = 1.0f - grid_v;
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*r_ptex_v = 1.0f - grid_u;
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}
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BLI_INLINE int BKE_subdiv_grid_size_from_level(const int level)
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{
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return (1 << (level - 1)) + 1;
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}
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BLI_INLINE int BKE_subdiv_rotate_quad_to_corner(const float quad_u,
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const float quad_v,
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float *r_corner_u,
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float *r_corner_v)
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{
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int corner;
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if (quad_u <= 0.5f && quad_v <= 0.5f) {
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corner = 0;
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*r_corner_u = 2.0f * quad_u;
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*r_corner_v = 2.0f * quad_v;
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}
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else if (quad_u > 0.5f && quad_v <= 0.5f) {
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corner = 1;
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*r_corner_u = 2.0f * quad_v;
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*r_corner_v = 2.0f * (1.0f - quad_u);
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}
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else if (quad_u > 0.5f && quad_v > 0.5f) {
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corner = 2;
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*r_corner_u = 2.0f * (1.0f - quad_u);
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*r_corner_v = 2.0f * (1.0f - quad_v);
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}
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else {
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BLI_assert(quad_u <= 0.5f && quad_v >= 0.5f);
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corner = 3;
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*r_corner_u = 2.0f * (1.0f - quad_v);
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*r_corner_v = 2.0f * quad_u;
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}
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return corner;
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}
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BLI_INLINE void BKE_subdiv_rotate_grid_to_quad(
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const int corner, const float grid_u, const float grid_v, float *r_quad_u, float *r_quad_v)
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{
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if (corner == 0) {
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*r_quad_u = 0.5f - grid_v * 0.5f;
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*r_quad_v = 0.5f - grid_u * 0.5f;
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}
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else if (corner == 1) {
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*r_quad_u = 0.5f + grid_u * 0.5f;
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*r_quad_v = 0.5f - grid_v * 0.5f;
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}
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else if (corner == 2) {
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*r_quad_u = 0.5f + grid_v * 0.5f;
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*r_quad_v = 0.5f + grid_u * 0.5f;
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}
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else {
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BLI_assert(corner == 3);
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*r_quad_u = 0.5f - grid_u * 0.5f;
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*r_quad_v = 0.5f + grid_v * 0.5f;
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}
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}
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BLI_INLINE float BKE_subdiv_crease_to_sharpness_f(float edge_crease)
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{
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return edge_crease * edge_crease * 10.0f;
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}
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BLI_INLINE float BKE_subdiv_crease_to_sharpness_char(char edge_crease)
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{
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const float edge_crease_f = edge_crease / 255.0f;
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return BKE_subdiv_crease_to_sharpness_f(edge_crease_f);
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}
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