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Diffstat (limited to 'source/blender/blenlib/BLI_mpq3.hh')
| -rw-r--r-- | source/blender/blenlib/BLI_mpq3.hh | 297 |
1 files changed, 0 insertions, 297 deletions
diff --git a/source/blender/blenlib/BLI_mpq3.hh b/source/blender/blenlib/BLI_mpq3.hh deleted file mode 100644 index b9eda2ad7e1..00000000000 --- a/source/blender/blenlib/BLI_mpq3.hh +++ /dev/null @@ -1,297 +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 <iostream> - -# include "BLI_math.h" -# include "BLI_math_mpq.hh" -# include "BLI_span.hh" - -namespace blender { - -struct mpq3 { - mpq_class x, y, z; - - mpq3() = default; - - mpq3(const mpq_class *ptr) : x{ptr[0]}, y{ptr[1]}, z{ptr[2]} - { - } - - mpq3(const mpq_class (*ptr)[3]) : mpq3((const mpq_class *)ptr) - { - } - - explicit mpq3(mpq_class value) : x(value), y(value), z(value) - { - } - - explicit mpq3(int value) : x(value), y(value), z(value) - { - } - - mpq3(mpq_class x, mpq_class y, mpq_class z) : x{x}, y{y}, z{z} - { - } - - operator const mpq_class *() const - { - return &x; - } - - operator mpq_class *() - { - return &x; - } - - /* Cannot do this exactly in rational arithmetic! - * Approximate by going in and out of doubles. - */ - mpq_class normalize_and_get_length() - { - double dv[3] = {x.get_d(), y.get_d(), z.get_d()}; - double len = normalize_v3_db(dv); - this->x = mpq_class(dv[0]); - this->y = mpq_class(dv[1]); - this->z = mpq_class(dv[2]); - return len; - } - - mpq3 normalized() const - { - double dv[3] = {x.get_d(), y.get_d(), z.get_d()}; - double dr[3]; - normalize_v3_v3_db(dr, dv); - return mpq3(mpq_class(dr[0]), mpq_class(dr[1]), mpq_class(dr[2])); - } - - /* Cannot do this exactly in rational arithmetic! - * Approximate by going in and out of double. - */ - mpq_class length() const - { - mpq_class lsquared = this->length_squared(); - double dsquared = lsquared.get_d(); - double d = sqrt(dsquared); - return mpq_class(d); - } - - mpq_class length_squared() const - { - return x * x + y * y + z * z; - } - - void reflect(const mpq3 &normal) - { - *this = this->reflected(normal); - } - - mpq3 reflected(const mpq3 &normal) const - { - mpq3 result; - const mpq_class dot2 = 2 * dot(*this, normal); - result.x = this->x - (dot2 * normal.x); - result.y = this->y - (dot2 * normal.y); - result.z = this->z - (dot2 * normal.z); - return result; - } - - static mpq3 safe_divide(const mpq3 &a, const mpq3 &b) - { - mpq3 result; - result.x = (b.x == 0) ? mpq_class(0) : a.x / b.x; - result.y = (b.y == 0) ? mpq_class(0) : a.y / b.y; - result.z = (b.z == 0) ? mpq_class(0) : a.z / b.z; - return result; - } - - void invert() - { - x = -x; - y = -y; - z = -z; - } - - friend mpq3 operator+(const mpq3 &a, const mpq3 &b) - { - return mpq3(a.x + b.x, a.y + b.y, a.z + b.z); - } - - void operator+=(const mpq3 &b) - { - this->x += b.x; - this->y += b.y; - this->z += b.z; - } - - friend mpq3 operator-(const mpq3 &a, const mpq3 &b) - { - return mpq3(a.x - b.x, a.y - b.y, a.z - b.z); - } - - friend mpq3 operator-(const mpq3 &a) - { - return mpq3(-a.x, -a.y, -a.z); - } - - void operator-=(const mpq3 &b) - { - this->x -= b.x; - this->y -= b.y; - this->z -= b.z; - } - - void operator*=(mpq_class scalar) - { - this->x *= scalar; - this->y *= scalar; - this->z *= scalar; - } - - void operator*=(const mpq3 &other) - { - this->x *= other.x; - this->y *= other.y; - this->z *= other.z; - } - - friend mpq3 operator*(const mpq3 &a, const mpq3 &b) - { - return {a.x * b.x, a.y * b.y, a.z * b.z}; - } - - friend mpq3 operator*(const mpq3 &a, const mpq_class &b) - { - return mpq3(a.x * b, a.y * b, a.z * b); - } - - friend mpq3 operator*(const mpq_class &a, const mpq3 &b) - { - return mpq3(a * b.x, a * b.y, a * b.z); - } - - friend mpq3 operator/(const mpq3 &a, const mpq_class &b) - { - BLI_assert(b != 0); - return mpq3(a.x / b, a.y / b, a.z / b); - } - - friend bool operator==(const mpq3 &a, const mpq3 &b) - { - return a.x == b.x && a.y == b.y && a.z == b.z; - } - - friend bool operator!=(const mpq3 &a, const mpq3 &b) - { - return a.x != b.x || a.y != b.y || a.z != b.z; - } - - friend std::ostream &operator<<(std::ostream &stream, const mpq3 &v) - { - stream << "(" << v.x << ", " << v.y << ", " << v.z << ")"; - return stream; - } - - static mpq_class dot(const mpq3 &a, const mpq3 &b) - { - return a.x * b.x + a.y * b.y + a.z * b.z; - } - - static mpq_class dot_with_buffer(const mpq3 &a, const mpq3 &b, mpq3 &buffer) - { - buffer = a; - buffer *= b; - buffer.x += buffer.y; - buffer.x += buffer.z; - return buffer.x; - } - - static mpq3 cross(const mpq3 &a, const mpq3 &b) - { - return mpq3(a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]); - } - - static mpq3 cross_high_precision(const mpq3 &a, const mpq3 &b) - { - return cross(a, b); - } - - static mpq3 project(const mpq3 &a, const mpq3 &b) - { - const mpq_class mul = mpq3::dot(a, b) / mpq3::dot(b, b); - return mpq3(mul * b[0], mul * b[1], mul * b[2]); - } - - static mpq_class distance(const mpq3 &a, const mpq3 &b) - { - mpq3 diff(a.x - b.x, a.y - b.y, a.z - b.z); - return diff.length(); - } - - static mpq_class distance_squared(const mpq3 &a, const mpq3 &b) - { - mpq3 diff(a.x - b.x, a.y - b.y, a.z - b.z); - return mpq3::dot(diff, diff); - } - - static mpq_class distance_squared_with_buffer(const mpq3 &a, const mpq3 &b, mpq3 &buffer) - { - buffer = a; - buffer -= b; - return mpq3::dot(buffer, buffer); - } - - static mpq3 interpolate(const mpq3 &a, const mpq3 &b, mpq_class t) - { - mpq_class s = 1 - t; - return mpq3(a.x * s + b.x * t, a.y * s + b.y * t, a.z * s + b.z * t); - } - - static mpq3 abs(const mpq3 &a) - { - mpq_class abs_x = (a.x >= 0) ? a.x : -a.x; - mpq_class abs_y = (a.y >= 0) ? a.y : -a.y; - mpq_class abs_z = (a.z >= 0) ? a.z : -a.z; - return mpq3(abs_x, abs_y, abs_z); - } - - static int dominant_axis(const mpq3 &a) - { - mpq_class x = (a.x >= 0) ? a.x : -a.x; - mpq_class y = (a.y >= 0) ? a.y : -a.y; - mpq_class z = (a.z >= 0) ? a.z : -a.z; - return ((x > y) ? ((x > z) ? 0 : 2) : ((y > z) ? 1 : 2)); - } - - static mpq3 cross_poly(Span<mpq3> poly); - - /** There is a sensible use for hashing on exact arithmetic types. */ - uint64_t hash() const; -}; - -uint64_t hash_mpq_class(const mpq_class &value); - -} // namespace blender - -#endif /* WITH_GMP */ |