public override void Calc(double b1, double b2, double b3, double b4,
RecursizeBlurCalculator c1, RecursizeBlurCalculator c2, RecursizeBlurCalculator c3, RecursizeBlurCalculator c4)
{
r = b1 * c1.r + b2 * c2.r + b3 * c3.r + b4 * c4.r;
g = b1 * c1.g + b2 * c2.g + b3 * c3.g + b4 * c4.g;
b = b1 * c1.b + b2 * c2.b + b3 * c3.b + b4 * c4.b;
}
public RecursiveBlur(RecursizeBlurCalculator recursizeBluerCalculatorFactory)
{
m_sum1 = new ArrayList <RecursizeBlurCalculator>();
m_sum2 = new ArrayList <RecursizeBlurCalculator>();
m_buf = new ArrayList <ColorRGBA>();
m_RecursizeBlurCalculatorFactory = recursizeBluerCalculatorFactory;
}
public void BlurX(IImageReaderWriter img, double radius)
{
if (radius < 0.62)
{
return;
}
if (img.Width < 3)
{
return;
}
double s = (double)(radius * 0.5);
double q = (double)((s < 2.5) ?
3.97156 - 4.14554 * Math.Sqrt(1 - 0.26891 * s) :
0.98711 * s - 0.96330);
double q2 = (double)(q * q);
double q3 = (double)(q2 * q);
double b0 = (double)(1.0 / (1.578250 +
2.444130 * q +
1.428100 * q2 +
0.422205 * q3));
double b1 = (double)(2.44413 * q +
2.85619 * q2 +
1.26661 * q3);
double b2 = (double)(-1.42810 * q2 +
-1.26661 * q3);
double b3 = (double)(0.422205 * q3);
double b = (double)(1 - (b1 + b2 + b3) * b0);
b1 *= b0;
b2 *= b0;
b3 *= b0;
int w = img.Width;
int h = img.Height;
int wm = (int)w - 1;
int x, y;
int startCreatingAt = (int)m_sum1.Count;
m_sum1.AdjustSize(w);
m_sum2.AdjustSize(w);
m_buf.Allocate(w);
RecursizeBlurCalculator[] Sum1Array = m_sum1.Array;
RecursizeBlurCalculator[] Sum2Array = m_sum2.Array;
ColorRGBA[] BufferArray = m_buf.Array;
for (int i = startCreatingAt; i < w; i++)
{
Sum1Array[i] = m_RecursizeBlurCalculatorFactory.CreateNew();
Sum2Array[i] = m_RecursizeBlurCalculatorFactory.CreateNew();
}
for (y = 0; y < h; y++)
{
RecursizeBlurCalculator c = m_RecursizeBlurCalculatorFactory;
c.FromPix(img.GetPixel(0, y));
Sum1Array[0].Calc(b, b1, b2, b3, c, c, c, c);
c.FromPix(img.GetPixel(1, y));
Sum1Array[1].Calc(b, b1, b2, b3, c, Sum1Array[0], Sum1Array[0], Sum1Array[0]);
c.FromPix(img.GetPixel(2, y));
Sum1Array[2].Calc(b, b1, b2, b3, c, Sum1Array[1], Sum1Array[0], Sum1Array[0]);
for (x = 3; x < w; ++x)
{
c.FromPix(img.GetPixel(x, y));
Sum1Array[x].Calc(b, b1, b2, b3, c, Sum1Array[x - 1], Sum1Array[x - 2], Sum1Array[x - 3]);
}
Sum2Array[wm].Calc(b, b1, b2, b3, Sum1Array[wm], Sum1Array[wm], Sum1Array[wm], Sum1Array[wm]);
Sum2Array[wm - 1].Calc(b, b1, b2, b3, Sum1Array[wm - 1], Sum2Array[wm], Sum2Array[wm], Sum2Array[wm]);
Sum2Array[wm - 2].Calc(b, b1, b2, b3, Sum1Array[wm - 2], Sum2Array[wm - 1], Sum2Array[wm], Sum2Array[wm]);
Sum2Array[wm].ToPix(ref BufferArray[wm]);
Sum2Array[wm - 1].ToPix(ref BufferArray[wm - 1]);
Sum2Array[wm - 2].ToPix(ref BufferArray[wm - 2]);
for (x = wm - 3; x >= 0; --x)
{
Sum2Array[x].Calc(b, b1, b2, b3, Sum1Array[x], Sum2Array[x + 1], Sum2Array[x + 2], Sum2Array[x + 3]);
Sum2Array[x].ToPix(ref BufferArray[x]);
}
img.CopyColorHSpan(0, y, w, BufferArray, 0);
}
}
public abstract void Calc(double b1, double b2, double b3, double b4,
RecursizeBlurCalculator c1, RecursizeBlurCalculator c2, RecursizeBlurCalculator c3, RecursizeBlurCalculator c4);