public override void Prepare()
{
base.Prepare();
ISpanInterpolator spanInterpolator = base.Interpolator;
_mode0 = (spanInterpolator.GetType() == typeof(SpanInterpolatorLinear) &&
((SpanInterpolatorLinear)spanInterpolator).Transformer.GetType() == typeof(VertexProcessing.Affine) &&
((VertexProcessing.Affine)((SpanInterpolatorLinear)spanInterpolator).Transformer).IsIdentity());
}
public override void Prepare()
{
base.Prepare();
ISpanInterpolator spanInterpolator = base.Interpolator;
_mode0 = (spanInterpolator.GetType() == typeof(PixelFarm.Agg.Transform.SpanInterpolatorLinear) &&
((PixelFarm.Agg.Transform.SpanInterpolatorLinear)spanInterpolator).Transformer.GetType() == typeof(PixelFarm.Agg.Transform.Affine) &&
((PixelFarm.Agg.Transform.Affine)((PixelFarm.Agg.Transform.SpanInterpolatorLinear)spanInterpolator).Transformer).IsIdentity());
}
public override void GenerateColors(ColorRGBA[] outputColors, int startIndex, int x, int y, int len)
{
ISpanInterpolator spanInterpolator = base.Interpolator;
int bufferIndex;
byte[] srcBuffer = srcRW.GetBuffer();
if (spanInterpolator.GetType() == typeof(PixelFarm.Agg.Transform.SpanInterpolatorLinear) &&
((PixelFarm.Agg.Transform.SpanInterpolatorLinear)spanInterpolator).Transformer.GetType() == typeof(PixelFarm.Agg.Transform.Affine) &&
((PixelFarm.Agg.Transform.Affine)((PixelFarm.Agg.Transform.SpanInterpolatorLinear)spanInterpolator).Transformer).IsIdentity())
{
bufferIndex = srcRW.GetBufferOffsetXY(x, y);
//unsafe
{
#if true
do
{
outputColors[startIndex].blue = (byte)srcBuffer[bufferIndex++];
outputColors[startIndex].green = (byte)srcBuffer[bufferIndex++];
outputColors[startIndex].red = (byte)srcBuffer[bufferIndex++];
outputColors[startIndex].alpha = (byte)srcBuffer[bufferIndex++];
++startIndex;
} while (--len != 0);
#else
fixed(byte *pSource = &fg_ptr[bufferIndex])
{
int *pSourceInt = (int *)pSource;
fixed(RGBA_Bytes *pDest = &span[spanIndex])
{
int *pDestInt = (int *)pDest;
do
{
*pDestInt++ = *pSourceInt++;
} while (--len != 0);
}
}
#endif
}
return;
}
spanInterpolator.Begin(x + base.dx, y + base.dy, len);
int accColor0, accColor1, accColor2, accColor3;
int back_r = m_bgcolor.red;
int back_g = m_bgcolor.green;
int back_b = m_bgcolor.blue;
int back_a = m_bgcolor.alpha;
int maxx = srcRW.Width - 1;
int maxy = srcRW.Height - 1;
srcBuffer = srcRW.GetBuffer();
unchecked
{
do
{
int x_hr;
int y_hr;
spanInterpolator.GetCoord(out x_hr, out y_hr);
x_hr -= base.dxInt;
y_hr -= base.dyInt;
int x_lr = x_hr >> img_subpix_const.SHIFT;
int y_lr = y_hr >> img_subpix_const.SHIFT;
int weight;
if (x_lr >= 0 && y_lr >= 0 &&
x_lr < maxx && y_lr < maxy)
{
accColor0 =
accColor1 =
accColor2 =
accColor3 = (int)img_subpix_const.SCALE * (int)img_subpix_const.SCALE / 2;
x_hr &= (int)img_subpix_const.MASK;
y_hr &= (int)img_subpix_const.MASK;
bufferIndex = srcRW.GetBufferOffsetXY(x_lr, y_lr);
weight = (((int)img_subpix_const.SCALE - x_hr) *
((int)img_subpix_const.SCALE - y_hr));
if (weight > BASE_MASK)
{
accColor0 += weight * srcBuffer[bufferIndex + CO.R];
accColor1 += weight * srcBuffer[bufferIndex + CO.G];
accColor2 += weight * srcBuffer[bufferIndex + CO.B];
accColor3 += weight * srcBuffer[bufferIndex + CO.A];
}
weight = (x_hr * ((int)img_subpix_const.SCALE - y_hr));
if (weight > BASE_MASK)
{
bufferIndex += bytesBetweenPixelInclusive;
accColor0 += weight * srcBuffer[bufferIndex + CO.R];
accColor1 += weight * srcBuffer[bufferIndex + CO.G];
accColor2 += weight * srcBuffer[bufferIndex + CO.B];
accColor3 += weight * srcBuffer[bufferIndex + CO.A];
}
weight = (((int)img_subpix_const.SCALE - x_hr) * y_hr);
if (weight > BASE_MASK)
{
++y_lr;
bufferIndex = srcRW.GetBufferOffsetXY(x_lr, y_lr);
accColor0 += weight * srcBuffer[bufferIndex + CO.R];
accColor1 += weight * srcBuffer[bufferIndex + CO.G];
accColor2 += weight * srcBuffer[bufferIndex + CO.B];
accColor3 += weight * srcBuffer[bufferIndex + CO.A];
}
weight = (x_hr * y_hr);
if (weight > BASE_MASK)
{
bufferIndex += bytesBetweenPixelInclusive;
accColor0 += weight * srcBuffer[bufferIndex + CO.R];
accColor1 += weight * srcBuffer[bufferIndex + CO.G];
accColor2 += weight * srcBuffer[bufferIndex + CO.B];
accColor3 += weight * srcBuffer[bufferIndex + CO.A];
}
accColor0 >>= img_subpix_const.SHIFT * 2;
accColor1 >>= img_subpix_const.SHIFT * 2;
accColor2 >>= img_subpix_const.SHIFT * 2;
accColor3 >>= img_subpix_const.SHIFT * 2;
}
else
{
if (x_lr < -1 || y_lr < -1 ||
x_lr > maxx || y_lr > maxy)
{
accColor0 = back_r;
accColor1 = back_g;
accColor2 = back_b;
accColor3 = back_a;
}
else
{
accColor0 =
accColor1 =
accColor2 =
accColor3 = (int)img_subpix_const.SCALE * (int)img_subpix_const.SCALE / 2;
x_hr &= (int)img_subpix_const.MASK;
y_hr &= (int)img_subpix_const.MASK;
weight = (((int)img_subpix_const.SCALE - x_hr) *
((int)img_subpix_const.SCALE - y_hr));
if (weight > BASE_MASK)
{
}
x_lr++;
weight = (x_hr * ((int)img_subpix_const.SCALE - y_hr));
if (weight > BASE_MASK)
{
if ((uint)x_lr <= (uint)maxx && (uint)y_lr <= (uint)maxy)
{
BlendInFilterPixel(ref accColor0, ref accColor1, ref accColor2, ref accColor3,
srcRW.GetBuffer(),
srcRW.GetBufferOffsetXY(x_lr, y_lr),
weight);
}
else
{
accColor0 += back_r * weight;
accColor1 += back_g * weight;
accColor2 += back_b * weight;
accColor3 += back_a * weight;
}
}
x_lr--;
y_lr++;
weight = (((int)img_subpix_const.SCALE - x_hr) * y_hr);
if (weight > BASE_MASK)
{
if ((uint)x_lr <= (uint)maxx && (uint)y_lr <= (uint)maxy)
{
BlendInFilterPixel(ref accColor0, ref accColor1, ref accColor2, ref accColor3,
srcRW.GetBuffer(),
srcRW.GetBufferOffsetXY(x_lr, y_lr),
weight);
}
else
{
accColor0 += back_r * weight;
accColor1 += back_g * weight;
accColor2 += back_b * weight;
accColor3 += back_a * weight;
}
}
x_lr++;
weight = (x_hr * y_hr);
if (weight > BASE_MASK)
{
if ((uint)x_lr <= (uint)maxx && (uint)y_lr <= (uint)maxy)
{
BlendInFilterPixel(ref accColor0, ref accColor1, ref accColor2, ref accColor3,
srcRW.GetBuffer(),
srcRW.GetBufferOffsetXY(x_lr, y_lr),
weight);
}
else
{
accColor0 += back_r * weight;
accColor1 += back_g * weight;
accColor2 += back_b * weight;
accColor3 += back_a * weight;
}
}
accColor0 >>= img_subpix_const.SHIFT * 2;
accColor1 >>= img_subpix_const.SHIFT * 2;
accColor2 >>= img_subpix_const.SHIFT * 2;
accColor3 >>= img_subpix_const.SHIFT * 2;
}
}
outputColors[startIndex].red = (byte)accColor0;
outputColors[startIndex].green = (byte)accColor1;
outputColors[startIndex].blue = (byte)accColor2;
outputColors[startIndex].alpha = (byte)accColor3;
++startIndex;
spanInterpolator.Next();
} while (--len != 0);
}
}