c1bc70b711
A lot of files were missing copyright field in the header and
the Blender Foundation contributed to them in a sense of bug
fixing and general maintenance.
This change makes it explicit that those files are at least
partially copyrighted by the Blender Foundation.
Note that this does not make it so the Blender Foundation is
the only holder of the copyright in those files, and developers
who do not have a signed contract with the foundation still
hold the copyright as well.
Another aspect of this change is using SPDX format for the
header. We already used it for the license specification,
and now we state it for the copyright as well, following the
FAQ:
https://reuse.software/faq/
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* SPDX-FileCopyrightText: 2018 Blender Foundation
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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 "BKE_multires.h"
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#include "BLI_math_vector.h"
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#include "BLI_utildefines.h"
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BLI_INLINE void BKE_multires_construct_tangent_matrix(float tangent_matrix[3][3],
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const float dPdu[3],
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const float dPdv[3],
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const int corner)
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{
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if (corner == 0) {
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copy_v3_v3(tangent_matrix[0], dPdv);
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copy_v3_v3(tangent_matrix[1], dPdu);
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mul_v3_fl(tangent_matrix[0], -1.0f);
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mul_v3_fl(tangent_matrix[1], -1.0f);
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}
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else if (corner == 1) {
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copy_v3_v3(tangent_matrix[0], dPdu);
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copy_v3_v3(tangent_matrix[1], dPdv);
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mul_v3_fl(tangent_matrix[1], -1.0f);
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}
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else if (corner == 2) {
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copy_v3_v3(tangent_matrix[0], dPdv);
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copy_v3_v3(tangent_matrix[1], dPdu);
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}
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else if (corner == 3) {
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copy_v3_v3(tangent_matrix[0], dPdu);
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copy_v3_v3(tangent_matrix[1], dPdv);
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mul_v3_fl(tangent_matrix[0], -1.0f);
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}
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else {
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BLI_assert_msg(0, "Unhandled corner index");
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}
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cross_v3_v3v3(tangent_matrix[2], dPdu, dPdv);
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normalize_v3(tangent_matrix[0]);
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normalize_v3(tangent_matrix[1]);
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normalize_v3(tangent_matrix[2]);
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}
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