static MyColor GetApproximateColor_Bicubic(BufferReader4 reader, double cx, double cy)
{
//TODO: review here,
//passing pointer to array or use stackalloc
byte[] rBuffer = new byte[16];
byte[] gBuffer = new byte[16];
byte[] bBuffer = new byte[16];
byte[] aBuffer = new byte[16];
//nearest neighbor
if (reader.CurrentX > 2 && reader.CurrentY > 2 &&
reader.CurrentX < reader.Width - 2 &&
reader.CurrentY < reader.Height - 2)
{
//read 4 point sample
MyColor[] colors = new MyColor[16];
reader.SetStartPixel((int)cx, (int)cy);
reader.Read16(colors);
double x0 = (int)cx;
double x1 = (int)(cx + 1);
double xdiff = cx - x0;
double y0 = (int)cy;
double y1 = (int)(cy + 1);
double ydiff = cy - y0;
SeparateByChannel(colors, rBuffer, gBuffer, bBuffer, aBuffer);
double result_B = myInterpolator.getValueBytes(bBuffer, xdiff, ydiff);
double result_G = myInterpolator.getValueBytes(gBuffer, xdiff, ydiff);
double result_R = myInterpolator.getValueBytes(rBuffer, xdiff, ydiff);
double result_A = myInterpolator.getValueBytes(aBuffer, xdiff, ydiff);
//clamp
if (result_B > 255)
{
result_B = 255;
}
else if (result_B < 0)
{
result_B = 0;
}
if (result_G > 255)
{
result_G = 255;
}
else if (result_G < 0)
{
result_G = 0;
}
if (result_R > 255)
{
result_R = 255;
}
else if (result_R < 0)
{
result_R = 0;
}
if (result_A > 255)
{
result_A = 255;
}
else if (result_A < 0)
{
result_A = 0;
}
return(new MyColor((byte)result_R, (byte)result_G, (byte)result_B, (byte)result_A));
}
else
{
return(reader.ReadOnePixel());
}
}
static MyColor GetApproximateColor_Bicubic(BufferReader4 reader, double cx, double cy)
{
byte[] rBuffer = new byte[16];
byte[] gBuffer = new byte[16];
byte[] bBuffer = new byte[16];
byte[] aBuffer = new byte[16];
//nearest neighbor
if (reader.CurrentX > 2 && reader.CurrentY > 2 &&
reader.CurrentX < reader.Width - 2 &&
reader.CurrentY < reader.Height - 2)
{
//read 4 point sample
MyColor[] colors = new MyColor[16];
reader.SetStartPixel((int)cx, (int)cy);
reader.Read16(colors);
double x0 = (int)cx;
double x1 = (int)(cx + 1);
double xdiff = cx - x0;
double y0 = (int)cy;
double y1 = (int)(cy + 1);
double ydiff = cy - y0;
SeparateByChannel(colors, rBuffer, gBuffer, bBuffer, aBuffer);
double result_B = myInterpolator.getValueBytes(bBuffer, xdiff, ydiff);
double result_G = myInterpolator.getValueBytes(gBuffer, xdiff, ydiff);
double result_R = myInterpolator.getValueBytes(rBuffer, xdiff, ydiff);
double result_A = myInterpolator.getValueBytes(aBuffer, xdiff, ydiff);
//clamp
if (result_B > 255)
{
result_B = 255;
}
else if (result_B < 0)
{
result_B = 0;
}
if (result_G > 255)
{
result_G = 255;
}
else if (result_G < 0)
{
result_G = 0;
}
if (result_R > 255)
{
result_R = 255;
}
else if (result_R < 0)
{
result_R = 0;
}
if (result_A > 255)
{
result_A = 255;
}
else if (result_A < 0)
{
result_A = 0;
}
return new MyColor((byte)result_R, (byte)result_G, (byte)result_B, (byte)result_A);
}
else
{
return reader.ReadOnePixel();
}
}
