e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
48 lines
1009 B
C++
48 lines
1009 B
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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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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#include "BLI_assert.h"
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#include "BLI_math_vector_types.hh"
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namespace blender {
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/**
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* A version of `int2` used as a key for hash-maps, agnostic of the arbitrary order of the two
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* vertices in a mesh edge.
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*/
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struct OrderedEdge {
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int v_low;
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int v_high;
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OrderedEdge(const int v1, const int v2)
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{
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if (v1 < v2) {
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v_low = v1;
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v_high = v2;
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}
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else {
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v_low = v2;
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v_high = v1;
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}
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}
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OrderedEdge(const int2 edge) : OrderedEdge(edge[0], edge[1]) {}
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OrderedEdge(const uint v1, const uint v2) : OrderedEdge(int(v1), int(v2)) {}
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uint64_t hash() const
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{
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return (this->v_low << 8) ^ this->v_high;
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}
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friend bool operator==(const OrderedEdge &e1, const OrderedEdge &e2)
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{
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BLI_assert(e1.v_low < e1.v_high);
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BLI_assert(e2.v_low < e2.v_high);
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return e1.v_low == e2.v_low && e1.v_high == e2.v_high;
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}
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};
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} // namespace blender
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