void wxRect2DDouble::ConstrainTo( const wxRect2DDouble &rect )
{
if ( GetLeft() < rect.GetLeft() )
SetLeft( rect.GetLeft() );
if ( GetRight() > rect.GetRight() )
SetRight( rect.GetRight() );
if ( GetBottom() > rect.GetBottom() )
SetBottom( rect.GetBottom() );
if ( GetTop() < rect.GetTop() )
SetTop( rect.GetTop() );
}
// same as wxPlotRect2DDouble::Contains, but doesn't convert to wxPoint2DDouble
inline bool wxPlotRect2DDoubleContains(double x, double y, const wxRect2DDouble &rect)
{
return ((x>=rect.m_x) && (y>=rect.m_y) && (x<=rect.GetRight()) && (y<=rect.GetBottom()));
}
int ClipLineToRect( double &x0, double &y0,
double &x1, double &y1,
const wxRect2DDouble &rect )
{
if (!wxFinite(x0) || !wxFinite(y0) ||
!wxFinite(x1) || !wxFinite(y1)) return ClippedOut;
wxOutCode out0 = wxPlotRect2DDoubleOutCode( x0, y0, rect );
wxOutCode out1 = wxPlotRect2DDoubleOutCode( x1, y1, rect );
if ((out0 & out1) != wxInside) return ClippedOut; // both outside on same side
if ((out0 | out1) == wxInside) return ClippedNeither; // both inside
int ret = ClippedNeither;
if (x0 == x1) // vertical line
{
if (out0 & wxOutTop) {y0 = rect.GetTop(); ret |= ClippedFirstY;}
else if (out0 & wxOutBottom) {y0 = rect.GetBottom(); ret |= ClippedFirstY;}
if (out1 & wxOutTop) {y1 = rect.GetTop(); ret |= ClippedSecondY;}
else if (out1 & wxOutBottom) {y1 = rect.GetBottom(); ret |= ClippedSecondY;}
return ret;
}
if (y0 == y1) // horiz line
{
if (out0 & wxOutLeft) {x0 = rect.GetLeft(); ret |= ClippedFirstX;}
else if (out0 & wxOutRight) {x0 = rect.GetRight(); ret |= ClippedFirstX;}
if (out1 & wxOutLeft) {x1 = rect.GetLeft(); ret |= ClippedSecondX;}
else if (out1 & wxOutRight) {x1 = rect.GetRight(); ret |= ClippedSecondX;}
return ret;
}
double x = x0, y = y0;
wxOutCode out = out0;
int points_out = 2;
bool out0_outside = true;
if (out0 == wxInside)
{
out0_outside = false;
points_out = 1;
out = out1;
}
else if (out1 == wxInside)
points_out = 1;
for (int i=0; i<points_out; i++)
{
if (out & wxOutTop)
{
y = rect.GetTop();
x = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
else if (out & wxOutBottom)
{
y = rect.GetBottom();
x = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
// check left and right
if (out & wxOutRight)
{
x = rect.GetRight();
y = y0 + (y1 - y0) * (x - x0) / (x1 - x0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
else if (out & wxOutLeft)
{
x = rect.GetLeft();
y = y0 + (y1 - y0) * (x - x0) / (x1 - x0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
// check top and bottom again
if (out & wxOutTop)
{
y = rect.GetTop();
x = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
else if (out & wxOutBottom)
{
y = rect.GetBottom();
x = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
out = wxPlotRect2DDoubleOutCode( x, y, rect );
}
if (!wxFinite(x) || !wxFinite(y)) return ClippedOut;
if ((i == 0) && out0_outside)
{
x0 = x;
y0 = y;
ret |= ClippedFirst;
out = out1;
}
else
{
x1 = x;
y1 = y;
ret |= ClippedSecond;
return ret;
}
}
return ret;
}
// differs from wxRect2DDouble::Intersects by allowing for 0 width or height
inline bool wxPlotRect2DDoubleIntersects(const wxRect2DDouble &a, const wxRect2DDouble &b)
{
return (wxMax(a.m_x, b.m_x) <= wxMin(a.GetRight(), b.GetRight())) &&
(wxMax(a.m_y, b.m_y) <= wxMin(a.GetBottom(), b.GetBottom()));
}
