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/
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bli
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* \brief Math vector functions needed specifically for mesh intersect and boolean.
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*/
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#include "BLI_math_vector_types.hh"
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#ifdef WITH_GMP
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# include "BLI_math_mpq.hh"
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# include "BLI_math_vector_mpq_types.hh"
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#endif
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namespace blender {
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/**
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* #orient2d gives the exact result, using multi-precision arithmetic when result
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* is close to zero. orient3d_fast just uses double arithmetic, so may be
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* wrong if the answer is very close to zero.
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* Similarly, for #incircle and #incircle_fast.
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*/
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int orient2d(const double2 &a, const double2 &b, const double2 &c);
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int orient2d_fast(const double2 &a, const double2 &b, const double2 &c);
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int incircle(const double2 &a, const double2 &b, const double2 &c, const double2 &d);
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int incircle_fast(const double2 &a, const double2 &b, const double2 &c, const double2 &d);
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/**
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* #orient3d gives the exact result, using multi-precision arithmetic when result
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* is close to zero. orient3d_fast just uses double arithmetic, so may be
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* wrong if the answer is very close to zero.
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* Similarly, for #insphere and #insphere_fast.
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*/
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int orient3d(const double3 &a, const double3 &b, const double3 &c, const double3 &d);
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int orient3d_fast(const double3 &a, const double3 &b, const double3 &c, const double3 &d);
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int insphere(
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const double3 &a, const double3 &b, const double3 &c, const double3 &d, const double3 &e);
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int insphere_fast(
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const double3 &a, const double3 &b, const double3 &c, const double3 &d, const double3 &e);
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#ifdef WITH_GMP
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/**
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* Return +1 if a, b, c are in CCW order around a circle in the plane.
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* Return -1 if they are in CW order, and 0 if they are in line.
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*/
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int orient2d(const mpq2 &a, const mpq2 &b, const mpq2 &c);
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/**
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* Return +1 if d is in the oriented circle through a, b, and c.
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* The oriented circle goes CCW through a, b, and c.
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* Return -1 if d is outside, and 0 if it is on the circle.
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*/
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int incircle(const mpq2 &a, const mpq2 &b, const mpq2 &c, const mpq2 &d);
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/**
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* Return +1 if d is below the plane containing a, b, c (which appear
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* CCW when viewed from above the plane).
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* Return -1 if d is above the plane.
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* Return 0 if it is on the plane.
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*/
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int orient3d(const mpq3 &a, const mpq3 &b, const mpq3 &c, const mpq3 &d);
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#endif
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} // namespace blender
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