mpri-graphics-project/spheroid.cpp
Rémi Oudin 9e605b0fec Center is an attribute of ImplicitSurface.
This way the search space for Marching Cubes is way smaller.
2018-02-12 11:37:38 +01:00

53 lines
1.1 KiB
C++

/**
* Implementation of a spheroid
**/
#include "spheroid.hpp"
Spheroid::Spheroid(Point& _center, size_t _p, size_t _q) :
ImplicitSurface(_center), p(_p), q(_q), stiffness(0) {
_compute_volume();
}
void Spheroid::_compute_volume() {
V = (4/3) * PI * p * q * q;
}
void Spheroid::set_stiffness(size_t _stiffness) {
stiffness = _stiffness;
}
void Spheroid::update_radius() {
q = sqrt((3/4) * V / PI / p);
}
void Spheroid::update_height() {
q = (3/4) * V / PI / (p*p);
}
void Spheroid::update_center_pos(Point& _center) {
center = _center;
}
void Spheroid::check_horizontal_plan_collision(double& height) {
if ((center.z - p) <= height) {
p = center.z-height;
update_radius();
}
}
void Spheroid::check_vertical_plan_collision(double& abscissa) {
if (center.x <= abscissa) {
if ((center.x + q) >= abscissa) {
q = abscissa - center.x;
update_height();
}
} else {
if ((center.x - q) <= abscissa) {
q = center.x - abscissa;
update_height();
}
}
}