public Hex FindHexMouseClick(int x, int y)
{
Hex target = null;
if (PointInBoardRectangle(x, y))
{
for (int i = 0; i < hexes.GetLength(0); i++)
{
for (int j = 0; j < hexes.GetLength(1); j++)
{
if (CalcUtil.InsidePolygon(hexes[i, j].Points, 6, new System.Drawing.PointF(x, y)))
{
target = hexes[i, j];
break;
}
}
if (target != null)
{
break;
}
}
}
return(target);
}
/// <summary>
/// Calculates the vertices of the hex based on orientation. Assumes that points[0] contains a value.
/// </summary>
private void CalculateVertices()
{
//
// h = short length (outside)
// r = long length (outside)
// side = length of a side of the hexagon, all 6 are equal length
//
// h = sin (30 degrees) x side
// r = cos (30 degrees) x side
//
// h
// ---
// ---- |r
// / \ |
// / \ |
// \ /
// \____/
//
// Flat orientation (scale is off)
//
// /\
// / \
// / \
// | |
// | |
// | |
// \ /
// \ /
// \/
// Pointy orientation (scale is off)
h = CalcUtil.CalculateH(side);
r = CalcUtil.CalculateR(side);
int x_low, x_high, y_low, y_high = 0;
switch (orientation)
{
case HexOrientation.Flat:
// x,y coordinates are top left point
points = new System.Drawing.PointF[6];
points[0] = new PointF(x, y);
points[1] = new PointF(x + side, y);
points[2] = new PointF(x + side + h, y + r);
points[3] = new PointF(x + side, y + r + r);
points[4] = new PointF(x, y + r + r);
points[5] = new PointF(x - h, y + r);
x_low = (int)System.Math.Ceiling(x - h);
x_high = (int)System.Math.Floor(x + side + h);
y_low = (int)System.Math.Ceiling(y);
y_high = (int)System.Math.Floor(y + r + r);
break;
case HexOrientation.Pointy:
//x,y coordinates are top center point
points = new System.Drawing.PointF[6];
points[0] = new PointF(x, y);
points[1] = new PointF(x + r, y + h);
points[2] = new PointF(x + r, y + side + h);
points[3] = new PointF(x, y + side + h + h);
points[4] = new PointF(x - r, y + side + h);
points[5] = new PointF(x - r, y + h);
x_low = (int)System.Math.Ceiling(x - r);
x_high = (int)System.Math.Floor(x + r);
y_low = (int)System.Math.Ceiling(y);
y_high = (int)System.Math.Floor(y + side + h);
break;
default:
throw new Exception("No HexOrientation defined for Hex object.");
}
float cX = 0;
float cY = 0;
for (int i = 0; i < 6; i++)
{
cX += points[i].X;
cY += points[i].Y;
}
centroid = new PointF(cX / 6, cY / 6);
inPointSet = new List <System.Drawing.PointF> ();
for (int iX = x_low; iX <= x_high; iX++)
{
for (int iY = y_low; iY <= y_high; iY++)
{
PointF p = new PointF(iX, iY);
if (CalcUtil.InsidePolygon(points, 6, p))
{
inPointSet.Add(p);
}
}
}
}
/// <summary>
/// Sets internal fields and creates board
/// </summary>
/// <param name="width">Board width</param>
/// <param name="height">Board height</param>
/// <param name="side">Hexagon side length</param>
/// <param name="orientation">Orientation of the hexagons</param>
/// <param name="xOffset">X coordinate offset</param>
/// <param name="yOffset">Y coordinate offset</param>
private void Initialize(int width, int height, int side, HexOrientation orientation, int xOffset, int yOffset)
{
this.width = width;
this.height = height;
this.xOffset = xOffset;
this.yOffset = yOffset;
this.side = side;
this.orientation = orientation;
hexes = new Hex[height, width]; //opposite of what we'd expect
this.mapState = new HexagonalMapState(width, height);
float h = CalcUtil.CalculateH(side); // short side
float r = CalcUtil.CalculateR(side); // long side
//
// Calculate pixel info..remove?
// because of staggering, need to add an extra r/h
float hexWidth = 0;
float hexHeight = 0;
switch (orientation)
{
case HexOrientation.Flat:
hexWidth = side + h;
hexHeight = r + r;
this.pixelWidth = (width * hexWidth) + h;
this.pixelHeight = (height * hexHeight) + r;
break;
case HexOrientation.Pointy:
hexWidth = r + r;
hexHeight = side + h;
this.pixelWidth = (width * hexWidth) + r;
this.pixelHeight = (height * hexHeight) + h;
break;
default:
break;
}
bool inTopRow = false;
bool inBottomRow = false;
bool inLeftColumn = false;
bool inRightColumn = false;
bool isTopLeft = false;
bool isTopRight = false;
bool isBotomLeft = false;
bool isBottomRight = false;
// i = y coordinate (rows), j = x coordinate (columns) of the hex tiles 2D plane
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
// Set position booleans
#region Position Booleans
if (i == 0)
{
inTopRow = true;
}
else
{
inTopRow = false;
}
if (i == height - 1)
{
inBottomRow = true;
}
else
{
inBottomRow = false;
}
if (j == 0)
{
inLeftColumn = true;
}
else
{
inLeftColumn = false;
}
if (j == width - 1)
{
inRightColumn = true;
}
else
{
inRightColumn = false;
}
if (inTopRow && inLeftColumn)
{
isTopLeft = true;
}
else
{
isTopLeft = false;
}
if (inTopRow && inRightColumn)
{
isTopRight = true;
}
else
{
isTopRight = false;
}
if (inBottomRow && inLeftColumn)
{
isBotomLeft = true;
}
else
{
isBotomLeft = false;
}
if (inBottomRow && inRightColumn)
{
isBottomRight = true;
}
else
{
isBottomRight = false;
}
#endregion
//
// Calculate Hex positions
//
if (isTopLeft)
{
//First hex
switch (orientation)
{
case HexOrientation.Flat:
hexes[0, 0] = new Hex(0 + h + xOffset, 0 + yOffset, side, orientation);
break;
case HexOrientation.Pointy:
hexes[0, 0] = new Hex(0 + r + xOffset, 0 + yOffset, side, orientation);
break;
default:
break;
}
}
else
{
switch (orientation)
{
case HexOrientation.Flat:
if (inLeftColumn)
{
// Calculate from hex above
hexes[i, j] = new Hex(hexes[i - 1, j].Points[(int)FlatVertice.BottomLeft], side, orientation);
}
else
{
// Calculate from Hex to the left and need to stagger the columns
if (j % 2 == 0)
{
// Calculate from Hex to left's Upper Right Vertice plus h and R offset
float x = hexes[i, j - 1].Points[(int)FlatVertice.UpperRight].X;
float y = hexes[i, j - 1].Points[(int)FlatVertice.UpperRight].Y;
x += h;
y -= r;
hexes[i, j] = new Hex(x, y, side, orientation);
}
else
{
// Calculate from Hex to left's Middle Right Vertice
hexes[i, j] = new Hex(hexes[i, j - 1].Points[(int)FlatVertice.MiddleRight], side, orientation);
}
}
break;
case HexOrientation.Pointy:
if (inLeftColumn)
{
// Calculate from hex above and need to stagger the rows
if (i % 2 == 0)
{
hexes[i, j] = new Hex(hexes[i - 1, j].Points[(int)PointyVertice.BottomLeft], side, orientation);
}
else
{
hexes[i, j] = new Hex(hexes[i - 1, j].Points[(int)PointyVertice.BottomRight], side, orientation);
}
}
else
{
// Calculate from Hex to the left
float x = hexes[i, j - 1].Points[(int)PointyVertice.UpperRight].X;
float y = hexes[i, j - 1].Points[(int)PointyVertice.UpperRight].Y;
x += r;
y -= h;
hexes[i, j] = new Hex(x, y, side, orientation);
}
break;
default:
break;
}
}
}
}
mapStateMgr = new MapStateManager(this);
}
/// <param name="side">length of one side of the hexagon</param>
public Hex(int x, int y, int side, HexOrientation orientation)
{
Initialize(CalcUtil.ConvertToFloat(x), CalcUtil.ConvertToFloat(y), CalcUtil.ConvertToFloat(side), orientation);
}
