//
// point3d.cc
//
// A point in 3d space
//
// Copyright (C) J. Belson	1998.11.30
//


#include <iomanip>

#include "point3d.h"


/**
 * Constructor
 */
point3d::point3d(float xx, float yy, float zz)
{
	x = xx;
	y = yy;
	z = zz;
}


/**
 * Return coordinates of current point
 */
void point3d::get(float *xx, float *yy, float *zz) const
{
	*xx = x;
	*yy = y;
	*zz = z;
}


/**
 * Set coordinates of current point
 */
void point3d::set(float xx, float yy, float zz)
{
	x = xx;
	y = yy;
	z = zz;
}


/**
 * Set colour of this point
 */
void point3d::set_colour(uint8 red, uint8 green, uint8 blue)
{
	col.r = red/255.0;
	col.g = green/255.0;
	col.b = blue/255.0;
}


/**
 * Set colour of this point
 */
void point3d::set_colour(const fcolour& c)
{
	col = c;
}


/**
 * Get colour of this point
 */
fcolour point3d::get_colour(void) const
{
	return col;
}


/**
 * Subtract a vector from this point
 */
vector3d point3d::operator-(const point3d& p) const
{
	vector3d v(x - p.x, y - p.y, z - p.z);
	
	return v;
}


/**
 * Add a vector to this point
 */
point3d point3d::operator+(const vector3d& v) const
{
	point3d p(x + v.i, y + v.j, z + v.k);

	return p;
}


/**
 * Apply scaling factor to this point
 */
point3d point3d::operator*(double f)
{
	point3d p(x*f, y*f, z*f);
	
	return p;
}


/**
 * Assign to this point
 */
point3d point3d::operator=(const point3d& p)
{
	x = p.x;
	y = p.y;
	z = p.z;
	col = p.col;

	return *this;
}


/**
 * Cast 'this' to point2d
 */
point3d::operator point2d() {
	point2d p;
	p.x = x;
	p.y = y;
	p.depth = z;
	p.col = col;
		
	return p;
}


/**
 * Write specified point coordinates to a stream.
 * @param str	stream to write to
 * @param p	point to operate on
 */
std::ostream& operator<<(std::ostream& str, const point3d& p)
{
	str << std::setprecision(4);
	str << "(" << p.x << ", " << p.y << ", " << p.z << ")";

	return str;
}