/* Obstruction.cpp
 *
 * Definition of the Obstruction class.
 */

#include "Obstruction.h"

const double Obstruction::EPSILON = 0.000001;
const double Obstruction::BUFFER = 0.001;
const double Obstruction::DEF_DAMPING = 0.3;
const double Obstruction::DEF_FRICTION = 0.9;


Obstruction::Obstruction(double damping, double friction)
: damping_(damping),
  friction_(friction)
{
	// Nothing (more) to do
}

Obstruction::~Obstruction()
{
	// Nothing to do
}

/* draw
 *
 * Draw the obstruction at the given coordinates.
 */
void Obstruction::draw(bool light) const
{
	// To be handled virtually

	(void)light;
}

/* pathIntersect
 *
 * Determines if this obstruction is on the given path and returns the Beta value,
 * (the percent of path completed before collision).
 */
const double Obstruction::pathIntersect(
	const Path& path,
	double radius) const
{
	// To be handled virtually

	(void)path;
	(void)radius;

	return 1.0 + EPSILON;
}

/* calcNormal
 *
 * Returns the normal of the given obstruction relative to a given point
 * (certain obstructions have fixed normals; others depend on where you are).
 */
const Tuple Obstruction::calcNormal(const Tuple& point) const
{
	// To be handled virtually

	(void)point;

	return Tuple();
}