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* Copyright (C) 2005 Terence M. Welsh
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* This file is part of Implicit.
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* Implicit is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation.
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* Implicit 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 Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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class impKnot : public impShape{
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int coils, twists; // integer number of coils and twists, respectively
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float coilsf, twistsf; // floating point versions of n and m
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float twistsOverCoils, lat_offset; // precomputed variables
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radius1 = 1.0f; radius2 = 0.5f; thickness = 0.1f;
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coils = 3; coilsf = float(coils); twists = 2; twistsf = float(twists);
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thicknessSquared = thickness * thickness;
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twistsOverCoils = twistsf / coilsf;
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lat_offset = 6.28318530718f / coilsf;
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// position is an array of 3 floats
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// returns the field strenth of this sphere at a given position
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void setRadius1(float r){radius1 = r;}
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float getRadius1(){return radius1;}
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void setRadius2(float r){radius2 = r;}
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float getRadius2(){return radius2;}
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void setNumCoils(int c){
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coils = (c<1 ? 1 : c); // coils must be greater than 1
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coilsf = float(coils);
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twistsOverCoils = twistsf / coilsf;
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lat_offset = 6.28318530718f / coilsf;
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int getNumCoils(){return coils;}
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void setNumTwists(int t){
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twistsf = float(twists);
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twistsOverCoils = twistsf / coilsf;
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int getNumTwists(){return twists;}
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virtual float value(float* position);
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virtual void center(float* position);
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virtual void addCrawlPoint(impCrawlPointVector &cpv);
added
removed
reallyslick/include/Implicit/impKnot.h
