unsafe public void UpdateBitmap(SegmentRoot root)
{
if (root != null)
{
this.root = root;
}
if (!Closed)
{
return;
}
if (root == null || root.bmp == null)
{
return;
}
if (bmp != null)
{
bmp.Dispose();
}
var expBound = GetExpandedBound(path);
var pathBmp = DrawPath(expBound);
Rectangle pixelBound = new Rectangle();
bool[] pixels = GetPixelsInPath(pathBmp, out pixelBound);
offset = new Point(expBound.X + pixelBound.X, expBound.Y + pixelBound.Y);
bmp = new Bitmap((int)pixelBound.Width, (int)pixelBound.Height, root.bmp.PixelFormat);
using (var initer = new BitmapIterator(root.bmp, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb))
using (var outiter = new BitmapIterator(bmp, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb))
{
for (int y = 0; y < pixelBound.Height; y++)
{
for (int x = 0; x < pixelBound.Width; x++)
{
if (pixels[pixelBound.Width * y + x])
{
int xx = offset.X + x;
int yy = offset.Y + y;
if (xx < 0 || root.bmp.Width <= xx || yy < 0 || root.bmp.Height <= yy)
{
continue;
}
if (x < 0 || bmp.Width <= x || y < 0 || bmp.Height <= y)
{
continue;
}
int ii = initer.Stride * yy + 4 * xx;
int oi = outiter.Stride * y + 4 * x;
outiter.Data[oi + 0] = initer.Data[ii + 0];
outiter.Data[oi + 1] = initer.Data[ii + 1];
outiter.Data[oi + 2] = initer.Data[ii + 2];
outiter.Data[oi + 3] = initer.Data[ii + 3];
}
}
}
}
}
public Segment(string key, SegmentRoot root)
{
this.name = key;
this.root = root;
}
