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Diffstat (limited to 'source/blender/blenlib/BLI_mpq2.hh')
-rw-r--r-- | source/blender/blenlib/BLI_mpq2.hh | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/source/blender/blenlib/BLI_mpq2.hh b/source/blender/blenlib/BLI_mpq2.hh deleted file mode 100644 index 18bc8821d9c..00000000000 --- a/source/blender/blenlib/BLI_mpq2.hh +++ /dev/null @@ -1,184 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#pragma once - -/** \file - * \ingroup bli - */ - -#ifdef WITH_GMP - -# include "BLI_math_mpq.hh" -# include "BLI_mpq3.hh" - -namespace blender { - -struct mpq2 { - mpq_class x, y; - - mpq2() = default; - - mpq2(const mpq_class *ptr) : x{ptr[0]}, y{ptr[1]} - { - } - - mpq2(mpq_class x, mpq_class y) : x(x), y(y) - { - } - - mpq2(const mpq2 &other) : x(other.x), y(other.y) - { - } - - mpq2(mpq2 &&other) noexcept : x(std::move(other.x)), y(std::move(other.y)) - { - } - - ~mpq2() = default; - - mpq2 &operator=(const mpq2 &other) - { - if (this != &other) { - x = other.x; - y = other.y; - } - return *this; - } - - mpq2 &operator=(mpq2 &&other) noexcept - { - x = std::move(other.x); - y = std::move(other.y); - return *this; - } - - mpq2(const mpq3 &other) : x(other.x), y(other.y) - { - } - - operator mpq_class *() - { - return &x; - } - - operator const mpq_class *() const - { - return &x; - } - - /** - * Cannot do this exactly in rational arithmetic! - * Approximate by going in and out of doubles. - */ - mpq_class length() const - { - mpq_class lsquared = dot(*this, *this); - return mpq_class(sqrt(lsquared.get_d())); - } - - friend mpq2 operator+(const mpq2 &a, const mpq2 &b) - { - return {a.x + b.x, a.y + b.y}; - } - - friend mpq2 operator-(const mpq2 &a, const mpq2 &b) - { - return {a.x - b.x, a.y - b.y}; - } - - friend mpq2 operator*(const mpq2 &a, mpq_class b) - { - return {a.x * b, a.y * b}; - } - - friend mpq2 operator/(const mpq2 &a, mpq_class b) - { - BLI_assert(b != 0); - return {a.x / b, a.y / b}; - } - - friend mpq2 operator*(mpq_class a, const mpq2 &b) - { - return b * a; - } - - friend bool operator==(const mpq2 &a, const mpq2 &b) - { - return a.x == b.x && a.y == b.y; - } - - friend bool operator!=(const mpq2 &a, const mpq2 &b) - { - return a.x != b.x || a.y != b.y; - } - - friend std::ostream &operator<<(std::ostream &stream, const mpq2 &v) - { - stream << "(" << v.x << ", " << v.y << ")"; - return stream; - } - - static mpq_class dot(const mpq2 &a, const mpq2 &b) - { - return a.x * b.x + a.y * b.y; - } - - static mpq2 interpolate(const mpq2 &a, const mpq2 &b, mpq_class t) - { - return a * (1 - t) + b * t; - } - - static mpq2 abs(const mpq2 &a) - { - mpq_class abs_x = (a.x >= 0) ? a.x : -a.x; - mpq_class abs_y = (a.y >= 0) ? a.y : -a.y; - return mpq2(abs_x, abs_y); - } - - static mpq_class distance(const mpq2 &a, const mpq2 &b) - { - return (a - b).length(); - } - - static mpq_class distance_squared(const mpq2 &a, const mpq2 &b) - { - mpq2 diff = a - b; - return dot(diff, diff); - } - - struct isect_result { - enum { - LINE_LINE_COLINEAR = -1, - LINE_LINE_NONE = 0, - LINE_LINE_EXACT = 1, - LINE_LINE_CROSS = 2, - } kind; - mpq_class lambda; - }; - - static isect_result isect_seg_seg(const mpq2 &v1, - const mpq2 &v2, - const mpq2 &v3, - const mpq2 &v4); - - /** There is a sensible use for hashing on exact arithmetic types. */ - uint64_t hash() const; -}; - -} // namespace blender - -#endif /* WITH_GMP */ |