diff options
author | Clément Foucault <foucault.clem@gmail.com> | 2022-01-12 14:49:36 +0300 |
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committer | Clément Foucault <foucault.clem@gmail.com> | 2022-01-12 14:50:02 +0300 |
commit | fb6bd8864411ee27db05ceadcb80f690f44e48dd (patch) | |
tree | 7f5354d1272612a32c28bfda4c03259970c402b7 /source/blender/blenlib/BLI_float2.hh | |
parent | 46e049d0ce2bce2f53ddc41a0dbbea2969d00a5d (diff) |
Revert "BLI: Refactor vector types & functions to use templates"
Includes unwanted changes
This reverts commit 46e049d0ce2bce2f53ddc41a0dbbea2969d00a5d.
Diffstat (limited to 'source/blender/blenlib/BLI_float2.hh')
-rw-r--r-- | source/blender/blenlib/BLI_float2.hh | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_float2.hh b/source/blender/blenlib/BLI_float2.hh new file mode 100644 index 00000000000..bb4229db86e --- /dev/null +++ b/source/blender/blenlib/BLI_float2.hh @@ -0,0 +1,218 @@ +/* + * 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 + +#include "BLI_float3.hh" + +namespace blender { + +struct float2 { + float x, y; + + float2() = default; + + float2(const float *ptr) : x{ptr[0]}, y{ptr[1]} + { + } + + explicit float2(float value) : x(value), y(value) + { + } + + explicit float2(int value) : x(value), y(value) + { + } + + float2(float x, float y) : x(x), y(y) + { + } + + float2(const float3 &other) : x(other.x), y(other.y) + { + } + + operator float *() + { + return &x; + } + + operator const float *() const + { + return &x; + } + + float length() const + { + return len_v2(*this); + } + + float length_squared() const + { + return len_squared_v2(*this); + } + + bool is_zero() const + { + return this->x == 0.0f && this->y == 0.0f; + } + + float2 &operator+=(const float2 &other) + { + x += other.x; + y += other.y; + return *this; + } + + float2 &operator-=(const float2 &other) + { + x -= other.x; + y -= other.y; + return *this; + } + + float2 &operator*=(float factor) + { + x *= factor; + y *= factor; + return *this; + } + + float2 &operator/=(float divisor) + { + x /= divisor; + y /= divisor; + return *this; + } + + uint64_t hash() const + { + uint64_t x1 = *reinterpret_cast<const uint32_t *>(&x); + uint64_t x2 = *reinterpret_cast<const uint32_t *>(&y); + return (x1 * 812519) ^ (x2 * 707951); + } + + friend float2 operator+(const float2 &a, const float2 &b) + { + return {a.x + b.x, a.y + b.y}; + } + + friend float2 operator-(const float2 &a, const float2 &b) + { + return {a.x - b.x, a.y - b.y}; + } + + friend float2 operator-(const float2 &a, const float &b) + { + return {a.x - b, a.y - b}; + } + + friend float2 operator*(const float2 &a, float b) + { + return {a.x * b, a.y * b}; + } + + friend float2 operator/(const float2 &a, float b) + { + BLI_assert(b != 0.0f); + return {a.x / b, a.y / b}; + } + + friend float2 operator*(float a, const float2 &b) + { + return b * a; + } + + friend std::ostream &operator<<(std::ostream &stream, const float2 &v) + { + stream << "(" << v.x << ", " << v.y << ")"; + return stream; + } + + static float2 safe_divide(const float2 &a, const float b) + { + return (b != 0.0f) ? a / b : float2(0.0f); + } + + static float2 floor(const float2 &a) + { + return float2(floorf(a.x), floorf(a.y)); + } + + /** + * Returns a normalized vector. The original vector is not changed. + */ + float2 normalized() const + { + float2 result; + normalize_v2_v2(result, *this); + return result; + } + + static float dot(const float2 &a, const float2 &b) + { + return a.x * b.x + a.y * b.y; + } + + static float2 interpolate(const float2 &a, const float2 &b, float t) + { + return a * (1 - t) + b * t; + } + + static float2 abs(const float2 &a) + { + return float2(fabsf(a.x), fabsf(a.y)); + } + + static float distance(const float2 &a, const float2 &b) + { + return (a - b).length(); + } + + static float distance_squared(const float2 &a, const float2 &b) + { + float2 diff = a - b; + return float2::dot(diff, diff); + } + + struct isect_result { + enum { + LINE_LINE_COLINEAR = -1, + LINE_LINE_NONE = 0, + LINE_LINE_EXACT = 1, + LINE_LINE_CROSS = 2, + } kind; + float lambda; + float mu; + }; + + static isect_result isect_seg_seg(const float2 &v1, + const float2 &v2, + const float2 &v3, + const float2 &v4); + + friend bool operator==(const float2 &a, const float2 &b) + { + return a.x == b.x && a.y == b.y; + } + + friend bool operator!=(const float2 &a, const float2 &b) + { + return !(a == b); + } +}; + +} // namespace blender |