a_shape_sphere.h

Go to the documentation of this file.

/*
         Copyright 2010-2020 Pierre SMARS (smars@yuntech.edu.tw)
         This program 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 2 of the License, or
         (at your option) any later version.
 
         This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _A_SHAPE_SPHERE_H_
#define _A_SHAPE_SPHERE_H_
 
// .NAME a_shape_sphere
// .SECTION Author
// Pierre Smars
#include "a_shape.h"
 
class a_shape_sphere : public a_shape
{
        public:
                a_shape_sphere(): a_shape(4) {for (short int i=0;i<4;i++) para_[i] = 0.;};
                virtual const std::string classname() const {return "a_shape_sphere";}
    static const std::string help();
                a_point closest_point(const a_point p) const;
                double dist_point(const a_point p) const;
                void p4pts(const a_point p1, const a_point p2, const a_point p3, const a_point p4); //sphere passes through 4 points
                a_point center() const {return a_point(para_[0],para_[1],para_[2]);}
                double radius() const {return para_[3];}
                void center(const a_point pt) {para_[0] = pt.x(); para_[1] = pt.y(); para_[2] = pt.z();} 
                void radius(double r) {para_[3] = r;} 
                void random_hint(const std::vector<a_point>& pts);
                void fit_cloud(std::vector<a_point>& pts, short nl = 1);
                void export_points(const unsigned int nseg, const std::vector<a_point>& pts) const;
                void export_triangles(const unsigned int nseg, const std::vector<a_point>& pts) const;
};
#endif