/// <summary>calculates image size based on the canvas. is this working? </summary>
/// <remarks>this shoudd be a utility.</remarks>
static public PointF pRatio(FloatPoint c, FloatPoint o, scaleFlags sf)
{
FloatPoint skaler = new Point();
float tr = 0;
string omax, cmax;
if (o.X >= o.Y)
{
omax = "width";
}
else
{
omax = "height"; //orig
}
if (c.X >= c.Y)
{
cmax = "width";
}
else
{
cmax = "height"; //canv
}
switch (cmax)
{
case "width": if (omax == cmax)
{
sf = scaleFlags.sWidth;
}
else
{
sf = scaleFlags.sHeight;
} break;
case "height": if (omax == cmax)
{
sf = scaleFlags.sHeight;
}
else
{
sf = scaleFlags.sWidth;
} break;
}
skale:
switch (sf)
{
case scaleFlags.sHeight:
if (o.IsYG(c))
{
skaler.Y = c.Y; tr = (float)((float)c.Y / (float)o.Y);
skaler.X = (int)Math.Round(o.X * tr);
}
else
{
skaler = o;
} break;
case scaleFlags.sWidth:
if (o.X > c.X)
{
skaler.X = c.X;
tr = (float)((float)c.X / (float)o.X); skaler.Y = (int)Math.Round(o.Y * tr);
}
else
{
skaler = o;
} break;
}
if ((skaler.X > c.X) | (skaler.Y > c.Y))
{
switch (sf)
{
case scaleFlags.sWidth: sf = scaleFlags.sHeight; goto skale;
case scaleFlags.sHeight: sf = scaleFlags.sWidth; goto skale;
}
}
return(skaler);
}
