protected override unsafe void SetPixel(int x, int y, float height, Bitmap32bitARGBPixel *pixel)
{
Color clr = heightBand[height];
pixel->A = clr.A;
pixel->R = clr.R;
pixel->G = clr.G;
pixel->B = clr.B;
}
protected override unsafe void SetPixel(int x, int y, byte value, Bitmap32bitARGBPixel *pixel)
{
Color clr = heightBand[value / 256f];
pixel->A = clr.A;
pixel->R = clr.R;
pixel->G = clr.G;
pixel->B = clr.B;
}
public override Bitmap GenerateBitmap(Size size, DataArea area)
{
SizeF scale = new SizeF(area.Area.Width / size.Width, area.Area.Height / size.Height);
PointF startPos = area.Area.Location;
PointF pos = startPos;
Bitmap bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format32bppArgb);
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, size.Width, size.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
unsafe
{
Bitmap32bitARGBPixel *pixels = (Bitmap32bitARGBPixel *)data.Scan0;
if (area.Data is byte[])
{
for (int y = 0; y < size.Height; y++)
{
pos.X = startPos.X;
for (int x = 0; x < size.Width; x++)
{
// take sample
byte value = (byte)area[(int)pos.X, (int)pos.Y];
//bitmap.SetPixel(x, y, GetPixel((int)pos.X, (int)pos.Y, value));
SetPixel((int)pos.X, (int)pos.Y, value, pixels);
pos.X += scale.Width;
pixels++;
}
pos.Y += scale.Height;
}
}
else if (area.Data is float[])
{
for (int y = 0; y < size.Height; y++)
{
pos.X = startPos.X;
for (int x = 0; x < size.Width; x++)
{
// take sample
float rawValue = (float)area[(int)pos.X, (int)pos.Y];
float value = rawValue / area.MaxDataValue;
//bitmap.SetPixel(x, y, Color.FromArgb(255, value, value, value));
SetPixel((int)pos.X, (int)pos.Y, value, pixels);
pos.X += scale.Width;
pixels++;
}
pos.Y += scale.Height;
}
}
}
bitmap.UnlockBits(data);
return(bitmap);
}
protected abstract unsafe void SetPixel(int x, int y, float height, Bitmap32bitARGBPixel *pixel);
protected abstract unsafe void SetPixel(int x, int y, byte value, Bitmap32bitARGBPixel *pixel);