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#include "AppHdr.h"
#include "coord-circle.h"
#include "coordit.h"
#include <cmath>
rectangle_iterator rect_def::iter() const
{
return (rectangle_iterator(min, max));
}
circle_def::circle_def()
: los_radius(true), origin(coord_def(0,0))
{
// Set up bounding box and shape.
init(LOS_MAX_RADIUS, C_ROUND);
}
circle_def::circle_def(int param, circle_type ctype)
: los_radius(false), origin(coord_def(0,0))
{
init(param, ctype);
}
circle_def::circle_def(const coord_def &origin_, int param,
circle_type ctype)
: los_radius(false), origin(origin_)
{
init(param, ctype);
}
void circle_def::init(int param, circle_type ctype)
{
switch (ctype)
{
case C_SQUARE:
shape = SH_SQUARE;
radius = param;
break;
case C_CIRCLE:
shape = SH_CIRCLE;
radius_sq = param;
radius = static_cast<int>(ceil(sqrt(radius_sq)));
break;
case C_ROUND:
shape = SH_CIRCLE;
radius = param;
radius_sq = radius * radius + 1;
break;
case C_POINTY:
shape = SH_CIRCLE;
radius = param;
radius_sq = radius * radius;
}
bbox = rect_def(origin - coord_def(radius, radius),
origin + coord_def(radius, radius));
}
const rect_def& circle_def::get_bbox() const
{
return (bbox);
}
bool circle_def::contains(const coord_def &p) const
{
switch (shape)
{
case SH_SQUARE:
return ((p - origin).rdist() <= radius);
case SH_CIRCLE:
return ((p - origin).abs() <= radius_sq);
default:
return (false);
}
}
circle_iterator::circle_iterator(const circle_def &circle_)
: circle(circle_), iter(circle_.get_bbox().iter())
{
while (iter && !circle.contains(*iter))
++iter;
}
circle_iterator::operator bool() const
{
return ((bool)iter);
}
coord_def circle_iterator::operator*() const
{
return (*iter);
}
void circle_iterator::operator++()
{
do
++iter;
while (iter && !circle.contains(*iter));
}
void circle_iterator::operator++(int)
{
++(*this);
}
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