// This initializes the blockmap
private void Initialize(RectangleF range, int blocksize)
{
// Initialize
this.range = range;
this.blocksizeshift = General.BitsForInt(blocksize);
this.blocksize = 1 << blocksizeshift;
if ((this.blocksize != blocksize) || (this.blocksize <= 1))
{
throw new ArgumentException("Block size must be a power of 2 greater than 1");
}
rangelefttop = new Vector2D(range.Left, range.Top);
// Simply casting to int can result int the blockmap being too small (for example for off-grid vertices), so round the dimensions
int left = range.Left < 0 ? (int)Math.Floor(range.Left) : (int)Math.Ceiling(range.Left);
int right = range.Right < 0 ? (int)Math.Floor(range.Right) : (int)Math.Ceiling(range.Right);
int top = range.Top < 0 ? (int)Math.Floor(range.Top) : (int)Math.Ceiling(range.Top);
int bottom = range.Bottom < 0 ? (int)Math.Floor(range.Bottom) : (int)Math.Ceiling(range.Bottom);
Point lefttop = new Point(left >> blocksizeshift, top >> blocksizeshift);
Point rightbottom = new Point(right >> blocksizeshift, bottom >> blocksizeshift);
size = new Size((rightbottom.X - lefttop.X) + 1, (rightbottom.Y - lefttop.Y) + 1);
blockmap = new BE[size.Width, size.Height];
Clear();
}
// This initializes the blockmap
private void Initialize(RectangleF range, int blocksize)
{
// Initialize
this.range = range;
this.blocksizeshift = General.BitsForInt(blocksize);
this.blocksize = 1 << blocksizeshift;
if ((this.blocksize != blocksize) || (this.blocksize <= 1))
{
throw new ArgumentException("Block size must be a power of 2 greater than 1");
}
rangelefttop = new Vector2D(range.Left, range.Top);
Point lefttop = new Point((int)range.Left >> blocksizeshift, (int)range.Top >> blocksizeshift);
Point rightbottom = new Point((int)range.Right >> blocksizeshift, (int)range.Bottom >> blocksizeshift);
size = new Size((rightbottom.X - lefttop.X) + 1, (rightbottom.Y - lefttop.Y) + 1);
blockmap = new BE[size.Width, size.Height];
Clear();
}
