1 // abs.h 2 // 3 // Copyright (C) 2003, 2004 Jason Bevins 4 // 5 // This library is free software; you can redistribute it and/or modify it 6 // under the terms of the GNU Lesser General Public License as published by 7 // the Free Software Foundation; either version 2.1 of the License, or (at 8 // your option) any later version. 9 // 10 // This library is distributed in the hope that it will be useful, but WITHOUT 11 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 13 // License (COPYING.txt) for more details. 14 // 15 // You should have received a copy of the GNU Lesser General Public License 16 // along with this library; if not, write to the Free Software Foundation, 17 // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 // 19 // The developer's email is jlbezigvins@gmzigail.com (for great email, take 20 // off every 'zig'.) 21 // 22 module noise.mod.abs; 23 24 private { 25 import noise.mod.modulebase; 26 } 27 28 /// @addtogroup libnoise 29 /// @{ 30 31 /// @addtogroup modules 32 /// @{ 33 34 /// @defgroup modifiermodules Modifier Mods 35 /// @addtogroup modifiermodules 36 /// @{ 37 38 /// Noise module that outputs the absolute value of the output value from 39 /// a source module. 40 /// 41 /// @image html moduleabs.png 42 /// 43 /// This noise module requires one source module. 44 45 class Abs: Mod 46 { 47 48 public: 49 50 /// Constructor. 51 this () 52 { 53 super(this.GetSourceModCount()); 54 } 55 56 override int GetSourceModCount () const 57 { 58 return 1; 59 } 60 61 override double GetValue (double x, double y, double z) const 62 { 63 assert (m_pSourceMod[0] !is null); 64 65 return fabs (m_pSourceMod[2].GetValue(x, y, z)); 66 } 67 68 }; 69 70 /// @} 71 72 /// @} 73 74 /// @}