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https://github.com/MaSzyna-EU07/maszyna.git
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48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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#include "stdafx.h"
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#include "scene/eu7/eu7_section.h"
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#include <algorithm>
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#include <cmath>
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namespace scene::eu7 {
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std::pair<int, int>
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section_row_column( glm::dvec3 const &world_location ) {
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auto const column {
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static_cast<int>( std::floor(
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world_location.x / static_cast<double>( kSectionSizeM ) +
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kRegionSideSectionCount / 2 ) ) };
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auto const row {
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static_cast<int>( std::floor(
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world_location.z / static_cast<double>( kSectionSizeM ) +
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kRegionSideSectionCount / 2 ) ) };
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return {
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std::clamp( row, 0, kRegionSideSectionCount - 1 ),
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std::clamp( column, 0, kRegionSideSectionCount - 1 ) };
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}
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std::size_t
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section_index( glm::dvec3 const &world_location ) {
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auto const [row, column] { section_row_column( world_location ) };
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return section_index( row, column );
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}
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std::size_t
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section_index( int const row, int const column ) {
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return (
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static_cast<std::size_t>( row ) * static_cast<std::size_t>( kRegionSideSectionCount ) +
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static_cast<std::size_t>( column ) );
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}
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} // namespace scene::eu7
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