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.
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/* SPDX-FileCopyrightText: 2018 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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.hh"
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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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