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/*************************************************************************
* Copyright (C) 2011 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/**
* @file
* Leopard pattern.
*/
#include "dimension.h"
#include <math.h>
/** Leopard pattern callback. */
static double
dmnsn_leopard_pattern_fn(const dmnsn_pattern *leopard, dmnsn_vector v)
{
double val = (sin(v.x) + sin(v.y) + sin(v.z))/3.0;
return val*val;
}
/** The singleton instance. */
static dmnsn_pattern dmnsn_leopard_instance = {
.pattern_fn = dmnsn_leopard_pattern_fn,
.refcount = 1,
};
dmnsn_pattern *
dmnsn_new_leopard_pattern(void)
{
DMNSN_INCREF(&dmnsn_leopard_instance);
return &dmnsn_leopard_instance;
}
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