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/**************************************************************************/
/* Copyright 2012 Tim Day */
/* */
/* This file is part of Evolvotron */
/* */
/* Evolvotron is free software: you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation, either version 3 of the License, or */
/* (at your option) any later version. */
/* */
/* Evolvotron 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 General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with Evolvotron. If not, see <http://www.gnu.org/licenses/>. */
/**************************************************************************/
/*! \file
\brief Functions inspired by tartan patterns.
*/
#ifndef _functions_quantize_h_
#define _functions_quantize_h_
#include "hex.h"
//------------------------------------------------------------------------------------------
FUNCTION_BEGIN(FunctionPixelize,2,0,false,FnStructure)
//! Evaluate function.
/*! Quantize coordinates to 2D grid
*/
virtual const XYZ evaluate(const XYZ& p) const
{
return XYZ
(
param(0)*round(p.x()/param(0)),
param(1)*round(p.y()/param(1)),
p.z()
);
}
FUNCTION_END(FunctionPixelize)
//------------------------------------------------------------------------------------------
FUNCTION_BEGIN(FunctionVoxelize,3,0,false,FnStructure)
//! Evaluate function.
/*! Quantize coordinates to 3D grid.
*/
virtual const XYZ evaluate(const XYZ& p) const
{
return XYZ
(
param(0)*round(p.x()/param(0)),
param(1)*round(p.y()/param(1)),
param(2)*round(p.z()/param(2))
);
}
FUNCTION_END(FunctionVoxelize)
//------------------------------------------------------------------------------------------
FUNCTION_BEGIN(FunctionPixelizeHex,1,0,false,FnStructure)
//! Evaluate function.
/*! Quantize coordinates to 2D hexgrid.
*/
virtual const XYZ evaluate(const XYZ& p) const
{
const std::pair<int,int> h=nearest_hex(p.x()/param(0),p.y()/param(0));
//std::cerr << h.first << " " << h.second << "\n";
return XYZ
(
param(0)*hex_coord(h.first,h.second),
p.z()
);
}
FUNCTION_END(FunctionPixelizeHex)
//------------------------------------------------------------------------------------------
#endif
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