// ReSharper disable once UnusedParameter.Local : for consistency with ShaperH and future usage
static Func <int, int, float> ShaperH(HShape hShape, int rows, int cols)
{
switch (hShape)
{
case HShape.Flat: return((_, __) => 0.5F);
case HShape.Left: return((_, __) => 0F);
case HShape.Right: return((_, __) => 1F);
case HShape.Rightdown: if (rows <= 1)
{
return((_, __) => 0.5F);
}
return((r, _) => r / ((float)rows - 1));
case HShape.Rightup: if (rows <= 1)
{
return((_, __) => 0.5F);
}
return((r, _) => 1 - r / ((float)rows - 1));
case HShape.BendLeft:
if (rows <= 2)
{
return((_, __) => 0F);
}
if (rows % 2 == 1)
{
return((r, _) => 1 - Math.Abs(2 * r / ((float)rows - 1) - 1));
}
return((r, _) => r < rows / 2
? 2 * r / ((float)rows - 2)
: 2 * (rows - r - 1) / ((float)rows - 2));
case HShape.BendRight:
if (rows <= 2)
{
return((_, __) => 1F);
}
if (rows % 2 == 1)
{
return((r, _) => Math.Abs(2 * r / ((float)rows - 1) - 1));
}
return((r, _) => r < rows / 2
? 1 - 2 * r / ((float)rows - 2)
: 1 - 2 * (rows - r - 1) / ((float)rows - 2));
default:
throw new NotImplementedException($"Invalid ShaperH value {hShape}");
}
}
static IEnumerable <Rectangle> DoPosition(
int rows,
int cols,
HShape hShape,
VShape vShape,
float margin,
float spacing,
Rectangle clientArea,
IEnumerable <Rectangle> rectangles
)
{
var scaleX = (clientArea.Width - 2 * margin) / cols;
var scaleY = (clientArea.Height - 2 * margin) / rows;
var shaperH = ShaperH(hShape, rows, cols);
var shaperV = ShaperV(vShape, rows, cols);
var grid = Enumerable.Range(0, rows)
.SelectMany(r => Enumerable.Range(0, cols)
.Select(c => new
{
area = new Rectangle(margin + c * scaleX, margin + r * scaleY, scaleX, scaleY),
hShape = shaperH(r, c),
vShape = shaperV(r, c),
}
)
);
return(grid
.ZipLongest(rectangles, (area, rectangle) => new { area, rectangle })
.Where(x => x.rectangle != null && x.area != null)
.Select(x => x.rectangle.FitIn(x.area.area, x.area.hShape, x.area.vShape, spacing))
.ToArray());
/*
* if (spacing == 0) return draft;
* var y0 = draft.GetAverageSpacing();
* var delta = Math.Sign(spacing) * .05f;
* var candidate = draft;
* for (var i=0; i<10; i++)
* {
* candidate = draft.IncreaseSpacing(delta).CheapToArray();
* var y1 = candidate.GetAverageSpacing();
* Trace.WriteLine($"spacing:{spacing}, y0:{y0}, y1:{y1}, delta:{delta}.");
* if (Math.Abs(y1 - spacing) < 0.01f)
* {
* return candidate;
* }
* var dy = (y1 - y0) / delta;
* delta = (spacing - y0) / dy;
* }
* return candidate;
*/
}
public HScreenDevice()
{
shape = null;
}
