50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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This file is part of Mitsuba, a physically based rendering system.
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Copyright (c) 2007-2012 by Wenzel Jakob and others.
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Mitsuba is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License Version 3
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as published by the Free Software Foundation.
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Mitsuba 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mitsuba/core/aabb.h>
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MTS_NAMESPACE_BEGIN
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Point AABB::getCorner(uint8_t corner) const {
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return Point(corner & 1 ? max.x : min.x,
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corner & 2 ? max.y : min.y,
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corner & 4 ? max.z : min.z);
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}
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bool AABB::overlaps(const BSphere &sphere) const {
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Float distance = 0;
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for (int i=0; i<3; ++i) {
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if (sphere.center[i] < min[i]) {
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Float d = sphere.center[i]-min[i];
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distance += d*d;
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} else if (sphere.center[i] > max[i]) {
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Float d = sphere.center[i]-max[i];
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distance += d*d;
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}
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}
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return distance < sphere.radius*sphere.radius;
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}
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BSphere AABB::getBSphere() const {
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Point3 center = getCenter();
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return BSphere(center, (center - max).length());
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}
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MTS_NAMESPACE_END
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