public override void InitializePreview(Rectangle rect)
{
var top = (int)nudTopCount.Value;
var sides = (int)nudSideCount.Value;
var bottom = (int)nudBottomCount.Value;
Cols = Math.Max(Math.Max(top, bottom), sides);
Rows = 4;
Nodes = new NutcrackerNodes[Rows, Cols];
for (var row = 0; row < Rows; row++)
{
for (var col = 0; col < Cols; col++)
{
Nodes[row, col] = new NutcrackerNodes {
Model = new Point(-1, -1)
};
}
}
var spacing = Math.Min(rect.Width, rect.Height);
var maxWidth = Math.Max(top, bottom);
var xSpacing = spacing / (maxWidth + 2);
var ySpacing = spacing / (sides + 2);
var xOffset = (rect.Width - (xSpacing * (maxWidth + 3))) / 2;
var yOffset = (rect.Height - (ySpacing * (sides + 3))) / 2;
int x, y;
// x = left to right
// y = top to bottom
// Starts at bottom left with the left side - should be the left most/bottom most pixel.
for (y = sides - 1; y >= 0; y--)
{
Nodes[0, y].Model = new Point(xSpacing + xOffset, (y + 2) * ySpacing + yOffset);
}
// Now top from left to right
for (x = 0; x < top; x++)
{
Nodes[1, x].Model = new Point((x + 1) * xSpacing + xOffset, ySpacing + yOffset);
}
// Now top right to bottom right
x = (maxWidth + 1) * xSpacing + xOffset;
for (y = 0; y < sides; y++)
{
Nodes[2, y].Model = new Point(x, (y + 1) * ySpacing + yOffset);
}
// Finally, finish along bottom
y = (sides + 1) * ySpacing + yOffset;
var margin = top <= bottom ? 0 : top - bottom;
for (x = bottom - 1; x >= 0; x--)
{
Nodes[3, x].Model = new Point((x + 2 + margin) * xSpacing + xOffset, y);
}
}
internal virtual void ResetNodes()
{
Nodes = new NutcrackerNodes[Rows, Cols];
for (var row = 0; row < Rows; row++)
{
for (var col = 0; col < Cols; col++)
{
Nodes[row, col] = new NutcrackerNodes();
}
}
}
