/// <summary><c>HexCoords</c> for the hex at the screen point, with the given AutoScroll position.</summary>
/// <param name="this"></param>
/// <param name="point">Screen point specifying hex to be identified.</param>
/// <param name="autoScroll">AutoScrollPosition for game-display Panel.</param>
static HexCoords GetHexCoordsInner(this IHexgrid @this, HexPoint point, HexSize autoScroll)
{
// Adjust for origin not as assumed by GetCoordinate().
var grid = new HexSize((int)(@this.GridSizeF().Width *2F / 3F), (int)@this.GridSizeF().Height);
point -= autoScroll + grid - @this.Margin;
return(HexCoords.NewCanonCoords(@this.GetCoordinate(@this.MatrixX(), point),
@this.GetCoordinate(@this.MatrixY(), point)));
}
/// <summary>Returns the pixel coordinates of the center of the specified hex.</summary>
/// <param name="this"></param>
/// <param name="coords"><see cref="HexCoords"/> specification for which pixel center is desired.</param>
/// <returns>Pixel coordinates of the center of the specified hex.</returns>
public static HexPoint HexOrigin(this IHexgrid @this, HexCoords coords)
=> new HexPoint(
(int)(@this.GridSizeF().Width *coords.User.X),
(int)(@this.GridSizeF().Height *coords.User.Y + @this.GridSizeF().Height / 2 * (coords.User.X + 1) % 2)
);
/// <summary>Returns ScrollPosition that places given hex in the upper-Left of viewport.</summary> /// <param name="this"></param> /// <param name="coordsNewULHex"><c>HexCoords</c> for new upper-left hex</param> /// <returns>Pixel coordinates in Client reference frame.</returns> static HexPoint HexCenterPointInner(this IHexgrid @this, HexCoords coordsNewULHex) => @this.HexOrigin(coordsNewULHex) + new HexSize((int)(@this.GridSizeF().Width *2F / 3F), (int)@this.GridSizeF().Height);
/// <summary><see cref="HexMatrix"/> for 'picking' the <B>Y</B> hex coordinate</summary>
public static HexMatrix MatrixY(this IHexgrid @this)
=> new HexMatrix(
0.0F, (3.0F / 2.0F) / @this.GridSizeF().Width,
2.0F / @this.GridSizeF().Height, 1.0F / @this.GridSizeF().Height, -0.5F, -0.5F);