Bounding box for spheroid, based on initial values.

Ball.cpp

@@ -4,7 +4,7 @@
 
 Ball::Ball(Point& _center, double _min_height, double _v_x, double _p, double _q) :
     Center(_center),
-    surface(_center, _p, _q),
+    surface(_center, min_height, _p, _q),
     init_h(_center.z),
     min_height(_min_height),
     bounce_number(0.0),

spheroid.cpp

@@ -4,8 +4,8 @@
 
 #include "spheroid.hpp"
 
-Spheroid::Spheroid(Point& _center, size_t _p, size_t _q) :
-    ImplicitSurface(_center), init_p(_p), p(_p), q(_q), stiffness(0) {
+Spheroid::Spheroid(Point& _center, double _min_p, size_t _p, size_t _q) :
+    ImplicitSurface(_center), min_p(_min_p), init_p(_p), p(_p), q(_q) {
         _compute_volume();
     }
 
@@ -13,9 +13,6 @@ void Spheroid::_compute_volume() {
     V = (4/3) * PI * p * q * q;
 }
 
-void Spheroid::set_stiffness(size_t _stiffness) {
-    stiffness = _stiffness;
-}
 
 
 void Spheroid::update_radius() {
@@ -51,3 +48,11 @@ void Spheroid::check_vertical_plan_collision(double& abscissa) {
         }
     }
 }
+
+Cuboid Spheroid::max_bounding_box() const {
+    double max_radius = sqrt((3/4) * V / PI / min_p);
+    double max_height = init_p;
+    Point _bd1(max_radius, max_radius, max_height);
+    Point _bd2(-max_radius, -max_radius, -max_height);
+    return Cuboid(_bd1, _bd2);
+}

spheroid.hpp

@@ -12,13 +12,13 @@ const double PI = 3.141592653589793;
 
 class Spheroid : public ImplicitSurface {
     public:
-        Spheroid(Point& _center, size_t _p, size_t _q);
+        Spheroid(Point& _center, double _min_p, size_t _p, size_t _q);
         void update_center_pos(Point& _center);
         void update_radius();
         void update_height();
-        void set_stiffness(size_t _stiffness);
         void check_horizontal_plan_collision(double& height);
         void check_vertical_plan_collision(double& abscissa);
+        Cuboid max_bounding_box() const;
         double operator() (double _x, double _y, double _z) const {
             return (pow(_x - center.x, 2) / pow(q, 2)
                   + pow(_y - center.y, 2) / pow(q, 2)
@@ -31,8 +31,7 @@ class Spheroid : public ImplicitSurface {
          * V is the volume. Extremely useful to have a constant volume in the
          * ball
         **/
-        double init_p, p, q;
-        size_t stiffness;
+        double min_p, init_p, p, q;
         double V;
         void _compute_volume();
 };