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#include <algorithm>
#include <cfloat>
#include <cassert>
#include "canvas/types.h"
using namespace std;
using namespace ArdourCanvas;
Coord const ArdourCanvas::COORD_MAX = DBL_MAX;
/* XXX: empirically arrived at */
Coord const ArdourCanvas::CAIRO_MAX = 65536;
static inline Coord
safe_add (Coord a, Coord b)
{
if (((COORD_MAX - a) <= b) || ((COORD_MAX - b) <= a)) {
return COORD_MAX;
}
return a + b;
}
Duple
Duple::translate (Duple t) const
{
Duple d;
d.x = safe_add (x, t.x);
d.y = safe_add (y, t.y);
return d;
}
boost::optional<Rect>
Rect::intersection (Rect const & o) const
{
Rect i;
i.x0 = max (x0, o.x0);
i.y0 = max (y0, o.y0);
i.x1 = min (x1, o.x1);
i.y1 = min (y1, o.y1);
if (i.x0 > i.x1 || i.y0 > i.y1) {
return boost::optional<Rect> ();
}
return boost::optional<Rect> (i);
}
Rect
Rect::translate (Duple t) const
{
Rect r;
r.x0 = safe_add (x0, t.x);
r.y0 = safe_add (y0, t.y);
r.x1 = safe_add (x1, t.x);
r.y1 = safe_add (y1, t.y);
return r;
}
Rect
Rect::extend (Rect const & o) const
{
Rect r;
r.x0 = min (x0, o.x0);
r.y0 = min (y0, o.y0);
r.x1 = max (x1, o.x1);
r.y1 = max (y1, o.y1);
return r;
}
Rect
Rect::expand (Distance amount) const
{
Rect r;
r.x0 = x0 - amount;
r.y0 = y0 - amount;
r.x1 = safe_add (x1, amount);
r.y1 = safe_add (y1, amount);
return r;
}
bool
Rect::contains (Duple point) const
{
return point.x >= x0 && point.x <= x1 && point.y >= y0 && point.y <= y1;
}
Rect
Rect::fix () const
{
Rect r;
r.x0 = min (x0, x1);
r.y0 = min (y0, y1);
r.x1 = max (x0, x1);
r.y1 = max (y0, y1);
return r;
}
Duple
ArdourCanvas::operator- (Duple const & o)
{
return Duple (-o.x, -o.y);
}
Duple
ArdourCanvas::operator+ (Duple const & a, Duple const & b)
{
return Duple (safe_add (a.x, b.x), safe_add (a.y, b.y));
}
Duple
ArdourCanvas::operator- (Duple const & a, Duple const & b)
{
return Duple (a.x - b.x, a.y - b.y);
}
Duple
ArdourCanvas::operator/ (Duple const & a, double b)
{
return Duple (a.x / b, a.y / b);
}
ostream &
ArdourCanvas::operator<< (ostream & s, Duple const & r)
{
s << "(" << r.x << ", " << r.y << ")";
return s;
}
ostream &
ArdourCanvas::operator<< (ostream & s, Rect const & r)
{
s << "[(" << r.x0 << ", " << r.y0 << "), (" << r.x1 << ", " << r.y1 << ") " << r.width() << " x " << r.height() << "]";
return s;
}
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