public DynamicGrid(MBR mbr, decimal xRes, decimal yRes)
: base(mbr, xRes, yRes)
{
gridIntersections = new Dictionary <double2, int>();
gridPolygons = new DynamicPolygon[0, 0];
intersectionList = new IntersectionList();
}
private void calcDisplayGrid()
{
displayGrid = new Grid(dataGrid);
// Calculate max mbr of all shapes
MBR mbr = new MBR(dataGrid.mbr.xMin, dataGrid.mbr.xMax, dataGrid.mbr.yMin, dataGrid.mbr.yMax);
if (shapes.Length != 0 && shapes[0].polygon.vertices.Length != 0)
{
mbr = new MBR(shapes[0].polygon.mbr.xMin, shapes[0].polygon.mbr.xMax, shapes[0].polygon.mbr.yMin, shapes[0].polygon.mbr.yMax);
}
foreach (Shape shape in shapes)
{
if (shape.polygon.vertices.Length != 0)
{
// Calculate new grid mbr based on shape mbr
mbr.xMin = shape.polygon.mbr.xMin < mbr.xMin ? shape.polygon.mbr.xMin : mbr.xMin;
mbr.xMax = shape.polygon.mbr.xMax > mbr.xMax ? shape.polygon.mbr.xMax : mbr.xMax;
mbr.yMin = shape.polygon.mbr.yMin < mbr.yMin ? shape.polygon.mbr.yMin : mbr.yMin;
mbr.yMax = shape.polygon.mbr.yMax > mbr.yMax ? shape.polygon.mbr.yMax : mbr.yMax;
}
}
// Calculate new grid mbr based on shape mbr
displayGrid.mbr.xMin += Math.Floor((mbr.xMin - dataGrid.mbr.xMin) / dataGrid.xRes) * dataGrid.xRes - dataGrid.xRes;
displayGrid.mbr.yMin += Math.Floor((mbr.yMin - dataGrid.mbr.yMin) / dataGrid.yRes) * dataGrid.yRes - dataGrid.yRes;
displayGrid.mbr.xMax += Math.Ceiling((mbr.xMax - dataGrid.mbr.xMax) / dataGrid.xRes) * dataGrid.xRes + dataGrid.xRes;
displayGrid.mbr.yMax += Math.Ceiling((mbr.yMax - dataGrid.mbr.yMax) / dataGrid.yRes) * dataGrid.yRes + dataGrid.yRes;
// Setup world scale
int width = Math.Max(512, Math.Min(4096, (int)Math.Ceiling(Math.Abs((displayGrid.mbr.xMax - displayGrid.mbr.xMin) / dataGrid.xRes) * 50)));
int height = Math.Max(512, Math.Min(4096, (int)Math.Ceiling(Math.Abs((displayGrid.mbr.yMax - displayGrid.mbr.yMin) / dataGrid.yRes) * 50)));
polygonBitmap = new Bitmap(width, height);
xScale = polygonBitmap.Width / (float)(displayGrid.mbr.xMax - displayGrid.mbr.xMin);
yScale = polygonBitmap.Height / (float)(displayGrid.mbr.yMax - displayGrid.mbr.yMin);
}
public Grid(Grid grid)
{
this.mbr = grid.mbr;
this.xRes = grid.xRes;
this.yRes = grid.yRes;
}
public Grid(MBR mbr, decimal xRes, decimal yRes)
{
this.mbr = mbr;
this.xRes = xRes;
this.yRes = yRes;
}
public Polygon(int length = 0)
{
vertices = new double2[length];
mbr = new MBR();
indices = new int[length];
}