protected override void CustomRenderSingleScanLine(IBitmapBlender destImage, Scanline scanline, Color color)
{
int y = scanline.Y;
int num_spans = scanline.SpanCount;
byte[] covers = scanline.GetCovers();
int spanCount = scanline.SpanCount;
var ras = _gfx.ScanlineRasterizer;
var rasToBmp = _gfx.BitmapRasterizer;
for (int i = 1; i <= num_spans; ++i)
{
var span2 = scanline.GetSpan(i);
int x = span2.x;
int num_pix = span2.len;
int coverIndex = span2.cover_index;
do
{
int a = (covers[coverIndex++] * color.Alpha0To255) >> 8;
_square.Draw(rasToBmp,
ras, _sl, destImage,
Color.FromArgb(a, color),
x, y);
++x;
}while (--num_pix > 0);
}
}
public SubBitmapBlender(IBitmapBlender image,
int arrayOffset32,
int width,
int height)
{
this.OutputPixelBlender = image.OutputPixelBlender;
AttachBuffer(image.GetBufferPtr(),
arrayOffset32,
width,
height,
image.Stride,
image.BitDepth,
image.BytesBetweenPixelsInclusive);
}
/// <summary>
/// This will create a new ImageBuffer that references the same memory as the image that you took the sub image from.
/// It will modify the original main image when you draw to it.
/// </summary>
/// <param name="parentImage"></param>
/// <param name="subImgBounds"></param>
/// <returns></returns>
public static SubBitmapBlender CreateSubBitmapBlender(IBitmapBlender parentImage, RectInt subImgBounds)
{
if (subImgBounds.Left < 0 || subImgBounds.Bottom < 0 || subImgBounds.Right > parentImage.Width || subImgBounds.Top > parentImage.Height ||
subImgBounds.Left >= subImgBounds.Right || subImgBounds.Bottom >= subImgBounds.Top)
{
throw new ArgumentException("The subImageBounds must be on the image and valid.");
}
int left = Math.Max(0, subImgBounds.Left);
int bottom = Math.Max(0, subImgBounds.Bottom);
int width = Math.Min(parentImage.Width - left, subImgBounds.Width);
int height = Math.Min(parentImage.Height - bottom, subImgBounds.Height);
return(new SubBitmapBlender(parentImage, parentImage.GetBufferOffsetXY32(left, bottom), width, height));
}
public override void Draw(PixelFarm.Drawing.Painter p)
{
//specific for agg
if (!(p is AggPainter))
{
return;
}
AggPainter p2 = (AggPainter)p;
AggRenderSurface asx = p2.RenderSurface;
if (asx.DestBitmapBlender != null)
{
IBitmapBlender backBuffer = asx.DestBitmapBlender;
//use different pixel blender
var redImageBuffer = new SubBitmapBlender(backBuffer, new PixelBlenderGrey());
var greenImageBuffer = new SubBitmapBlender(backBuffer, new PixelBlenderGrey());
var blueImageBuffer = new SubBitmapBlender(backBuffer, new PixelBlenderGrey());
ClipProxyImage clippingProxy = new ClipProxyImage(backBuffer);
ClipProxyImage clippingProxyRed = new ClipProxyImage(redImageBuffer);
ClipProxyImage clippingProxyGreen = new ClipProxyImage(greenImageBuffer);
ClipProxyImage clippingProxyBlue = new ClipProxyImage(blueImageBuffer);
//
ScanlineRasterizer sclineRas = asx.ScanlineRasterizer;
ScanlinePacked8 scline = asx.ScanlinePacked8;
Drawing.Color clearColor = this.UseBlackBlackground ? Drawing.Color.FromArgb(0, 0, 0) : Drawing.Color.FromArgb(255, 255, 255);
clippingProxy.Clear(clearColor);
Drawing.Color fillColor = this.UseBlackBlackground ?
new Drawing.Color((byte)(this.AlphaValue), 255, 255, 255) :
new Drawing.Color((byte)(this.AlphaValue), 0, 0, 0);
DestBitmapRasterizer bmpRas = asx.BitmapRasterizer;
using (VectorToolBox.Borrow(out Ellipse ellipse))
using (VxsTemp.Borrow(out var v1))
{
ellipse.Set(Width / 2 - 0.87 * 50, Height / 2 - 0.5 * 50, 100, 100, 100);
sclineRas.AddPath(ellipse.MakeVxs(v1));
v1.Clear();//**
bmpRas.RenderWithColor(clippingProxyRed, sclineRas, scline, fillColor);
////
ellipse.Set(Width / 2 + 0.87 * 50, Height / 2 - 0.5 * 50, 100, 100, 100);
sclineRas.AddPath(ellipse.MakeVxs(v1));
v1.Clear();//***
bmpRas.RenderWithColor(clippingProxyGreen, sclineRas, scline, fillColor);
//
ellipse.Set(Width / 2, Height / 2 + 50, 100, 100, 100);
sclineRas.AddPath(ellipse.MakeVxs(v1));
v1.Clear(); //***
bmpRas.RenderWithColor(clippingProxyBlue, sclineRas, scline, fillColor);
}
}
// else if (graphics2D.DestImageFloat != null)
// {
//#if false
// IImageFloat backBuffer = graphics2D.DestImageFloat;
// int distBetween = backBuffer.GetFloatsBetweenPixelsInclusive();
// ImageBufferFloat redImageBuffer = new ImageBufferFloat();
// redImageBuffer.Attach(backBuffer, new blender_gray(distBetween), distBetween, 2, 8);
// ImageBufferFloat greenImageBuffer = new ImageBufferFloat();
// greenImageBuffer.Attach(backBuffer, new blender_gray(distBetween), distBetween, 1, 8);
// ImageBufferFloat blueImageBuffer = new ImageBufferFloat();
// blueImageBuffer.Attach(backBuffer, new blender_gray(distBetween), distBetween, 0, 8);
// ImageClippingProxy clippingProxy = new ImageClippingProxy(backBuffer);
// ImageClippingProxy clippingProxyRed = new ImageClippingProxy(redImageBuffer);
// ImageClippingProxy clippingProxyGreen = new ImageClippingProxy(greenImageBuffer);
// ImageClippingProxy clippingProxyBlue = new ImageClippingProxy(blueImageBuffer);
// ScanlineRasterizer ras = new ScanlineRasterizer();
// ScanlineCachePacked8 sl = new ScanlineCachePacked8();
// RGBA_Bytes clearColor = useBlackBackgroundCheckbox.Checked ? new RGBA_Bytes(0, 0, 0) : new RGBA_Bytes(255, 255, 255);
// clippingProxy.clear(clearColor);
// alphaSlider.View.BackGroundColor = clearColor;
// RGBA_Bytes FillColor = useBlackBackgroundCheckbox.Checked ? new RGBA_Bytes(255, 255, 255, (int)(alphaSlider.Value)) : new RGBA_Bytes(0, 0, 0, (int)(alphaSlider.Value));
// VertexSource.Ellipse er = new AGG.VertexSource.Ellipse(Width / 2 - 0.87 * 50, Height / 2 - 0.5 * 50, 100, 100, 100);
// ras.add_path(er);
// agg_renderer_scanline.Default.render_scanlines_aa_solid(clippingProxyRed, ras, sl, FillColor);
// VertexSource.Ellipse eg = new AGG.VertexSource.Ellipse(Width / 2 + 0.87 * 50, Height / 2 - 0.5 * 50, 100, 100, 100);
// ras.add_path(eg);
// agg_renderer_scanline.Default.render_scanlines_aa_solid(clippingProxyGreen, ras, sl, FillColor);
// VertexSource.Ellipse eb = new AGG.VertexSource.Ellipse(Width / 2, Height / 2 + 50, 100, 100, 100);
// ras.add_path(eb);
// agg_renderer_scanline.Default.render_scanlines_aa_solid(clippingProxyBlue, ras, sl, FillColor);
//#endif
// }
}
public ProxyImage(IBitmapBlender linkedImage)
{
_linkedImage = linkedImage;
}
public void Blur(IBitmapBlender img, double radius)
{
BlurX(img, radius);
BlurY(img, radius);
}
public void BlurY(IBitmapBlender img, double radius)
{
FormatTransposer img2 = new FormatTransposer(img);
BlurX(img2, radius);
}
public void BlurX(IBitmapBlender 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.UnsafeInternalArray;
RecursizeBlurCalculator[] Sum2Array = m_sum2.UnsafeInternalArray;
Color[] BufferArray = m_buf.UnsafeInternalArray;
for (int i = startCreatingAt; i < w; i++)
{
Sum1Array[i] = m_RecursizeBlurCalculatorFactory.CreateNew();
Sum2Array[i] = m_RecursizeBlurCalculatorFactory.CreateNew();
}
for (y = 0; y < h; y++)
{
//TODO: review get pixel here...
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);
}
}
