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/*
* 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
*/
#include "BLI_double3.hh"
namespace blender::math {
struct double2 {
double x, y;
double2() = default;
double2(const double *ptr) : x{ptr[0]}, y{ptr[1]}
{
}
double2(double x, double y) : x(x), y(y)
{
}
double2(const double3 &other) : x(other.x), y(other.y)
{
}
operator double *()
{
return &x;
}
operator const double *() const
{
return &x;
}
};
inline double length(const double2 &a)
{
return len_v2_db(a);
}
inline double2 operator+(const double2 &a, const double2 &b)
{
return {a.x + b.x, a.y + b.y};
}
inline double2 operator-(const double2 &a, const double2 &b)
{
return {a.x - b.x, a.y - b.y};
}
inline double2 operator*(const double2 &a, double b)
{
return {a.x * b, a.y * b};
}
inline double2 operator/(const double2 &a, double b)
{
BLI_assert(b != 0.0);
return {a.x / b, a.y / b};
}
inline double2 operator*(double a, const double2 &b)
{
return b * a;
}
inline bool operator==(const double2 &a, const double2 &b)
{
return a.x == b.x && a.y == b.y;
}
inline bool operator!=(const double2 &a, const double2 &b)
{
return a.x != b.x || a.y != b.y;
}
inline std::ostream &operator<<(std::ostream &stream, const double2 &v)
{
stream << "(" << v.x << ", " << v.y << ")";
return stream;
}
inline double dot(const double2 &a, const double2 &b)
{
return a.x * b.x + a.y * b.y;
}
inline double2 lerp(const double2 &a, const double2 &b, double t)
{
return a * (1 - t) + b * t;
}
inline double2 abs(const double2 &a)
{
return double2(fabs(a.x), fabs(a.y));
}
inline double distance(const double2 &a, const double2 &b)
{
return length(a - b);
}
inline double distance_squared(const double2 &a, const double2 &b)
{
double2 diff = a - b;
return dot(diff, diff);
}
struct isect_result_double2 {
enum {
LINE_LINE_COLINEAR = -1,
LINE_LINE_NONE = 0,
LINE_LINE_EXACT = 1,
LINE_LINE_CROSS = 2,
} kind;
double lambda;
};
isect_result_double2 isect_seg_seg(const double2 &v1,
const double2 &v2,
const double2 &v3,
const double2 &v4);
} // namespace blender::math
namespace blender {
using blender::math::double2;
}
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