mirror of
https://github.com/worldforge/cyphesis
synced 2026-08-13 12:26:04 -04:00
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
// Cyphesis Online RPG Server and AI Engine
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// Copyright (C) 2003 Alistair Riddoch
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#include "BBox.h"
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#include "common/const.h"
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#include <wfmath/axisbox.h>
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#include <wfmath/point.h>
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WFMath::CoordType boxSquareSize(const BBox & box)
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{
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if (!box.isValid()) {
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return consts::minSqrBoxSize;
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}
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return square(box.highCorner().x() - box.lowCorner().x()) +
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square(box.highCorner().y() - box.lowCorner().y()) +
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square(box.highCorner().z() - box.lowCorner().z());
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}
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static WFMath::CoordType sqrMag(const WFMath::Point<3> & p)
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{
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return p.x() * p.x() + p.y() * p.y() + p.z() * p.z();
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}
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static WFMath::CoordType sqrMag(const WFMath::Point<2> & p)
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{
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return p.x() * p.x() + p.y() * p.y();
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}
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WFMath::CoordType boxSquareBoundingRadius(const BBox & box)
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{
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return std::max(sqrMag(box.lowCorner()), sqrMag(box.highCorner()));
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}
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WFMath::CoordType boxSquareHorizontalBoundingRadius(const BBox & box)
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{
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return std::max(sqrMag(WFMath::Point<2>(box.lowCorner().x(), box.lowCorner().y())),
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sqrMag(WFMath::Point<2>(box.highCorner().x(), box.highCorner().y())));
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}
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void boxScale(BBox& box, float scale)
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{
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float side_scale = std::pow(scale, 0.33333f);
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box = BBox(WFMath::Point<3>(box.lowCorner().x() * side_scale,
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box.lowCorner().y() * side_scale,
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box.lowCorner().z() * side_scale),
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WFMath::Point<3>(box.highCorner().x() * side_scale,
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box.highCorner().y() * side_scale,
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box.highCorner().z() * side_scale));
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}
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