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/*
* SOLID - Software Library for Interference Detection
*
* Copyright (C) 2001-2003 Dtecta. All rights reserved.
*
* This library may be distributed under the terms of the Q Public License
* (QPL) as defined by Trolltech AS of Norway and appearing in the file
* LICENSE.QPL included in the packaging of this file.
*
* This library may be distributed and/or modified under the terms of the
* GNU General Public License (GPL) version 2 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This library is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Commercial use or any other use of this library not covered by either
* the QPL or the GPL requires an additional license from Dtecta.
* Please contact info@dtecta.com for enquiries about the terms of commercial
* use of this library.
*/
#include "DT_Cone.h"
MT_Point3 DT_Cone::support(const MT_Vector3& v) const
{
MT_Scalar v_len = v.length();
if (v[1] > v_len * sinAngle)
{
return MT_Point3(MT_Scalar(0.0), halfHeight, MT_Scalar(0.0));
}
else
{
MT_Scalar s = MT_sqrt(v[0] * v[0] + v[2] * v[2]);
if (s != MT_Scalar(0.0))
{
MT_Scalar d = bottomRadius / s;
return MT_Point3(v[0] * d, -halfHeight, v[2] * d);
}
else
{
return MT_Point3(bottomRadius, -halfHeight, MT_Scalar(0.0));
}
}
}
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