unsafe public override void Render (ImageSurface src, ImageSurface dst, Gdk.Rectangle[] rois)
{
float bulge = (float)Data.Amount;
float hw = dst.Width / 2f;
float hh = dst.Height / 2f;
float maxrad = Math.Min (hw, hh);
float amt = bulge / 100f;
hh = hh + (float)Data.Offset.Y * hh;
hw = hw + (float)Data.Offset.X * hw;
int src_width = src.Width;
int src_height = src.Height;
ColorBgra* src_data_ptr = (ColorBgra*)src.DataPtr;
foreach (Gdk.Rectangle rect in rois) {
for (int y = rect.Top; y <= rect.GetBottom (); y++) {
ColorBgra* dstPtr = dst.GetPointAddressUnchecked (rect.Left, y);
ColorBgra* srcPtr = src.GetPointAddressUnchecked (src_data_ptr, src_width, rect.Left, y);
float v = y - hh;
for (int x = rect.Left; x <= rect.GetRight (); x++) {
float u = x - hw;
float r = (float)Math.Sqrt (u * u + v * v);
float rscale1 = (1f - (r / maxrad));
if (rscale1 > 0) {
float rscale2 = 1 - amt * rscale1 * rscale1;
float xp = u * rscale2;
float yp = v * rscale2;
*dstPtr = src.GetBilinearSampleClamped (src_data_ptr, src_width, src_height, xp + hw, yp + hh);
} else {
*dstPtr = *srcPtr;
}
++dstPtr;
++srcPtr;
}
}
}
}
public unsafe override void Render(ImageSurface src, ImageSurface dst, Gdk.Rectangle[] rois)
{
ColorBgra colPrimary = PintaCore.Palette.PrimaryColor.ToColorBgra ();
ColorBgra colSecondary = PintaCore.Palette.SecondaryColor.ToColorBgra ();
ColorBgra colTransparent = ColorBgra.Transparent;
int aaSampleCount = Data.Quality * Data.Quality;
Cairo.PointD* aaPoints = stackalloc Cairo.PointD[aaSampleCount];
Utility.GetRgssOffsets (aaPoints, aaSampleCount, Data.Quality);
ColorBgra* samples = stackalloc ColorBgra[aaSampleCount];
TransformData td;
foreach (Gdk.Rectangle rect in rois) {
for (int y = rect.Top; y < rect.Bottom; y++) {
ColorBgra* dstPtr = dst.GetPointAddressUnchecked (rect.Left, y);
double relativeY = y - Data.CenterOffset.Y;
for (int x = rect.Left; x < rect.Right; x++) {
double relativeX = x - Data.CenterOffset.X;
int sampleCount = 0;
for (int p = 0; p < aaSampleCount; ++p) {
td.X = relativeX + aaPoints[p].X;
td.Y = relativeY - aaPoints[p].Y;
InverseTransform (ref td);
float sampleX = (float)(td.X + Data.CenterOffset.X);
float sampleY = (float)(td.Y + Data.CenterOffset.Y);
ColorBgra sample = colPrimary;
if (IsOnSurface (src, sampleX, sampleY)) {
sample = src.GetBilinearSample (sampleX, sampleY);
} else {
switch (Data.EdgeBehavior) {
case WarpEdgeBehavior.Clamp:
sample = src.GetBilinearSampleClamped (sampleX, sampleY);
break;
case WarpEdgeBehavior.Wrap:
sample = src.GetBilinearSampleWrapped (sampleX, sampleY);
break;
case WarpEdgeBehavior.Reflect:
sample = src.GetBilinearSampleClamped (ReflectCoord (sampleX, src.Width), ReflectCoord (sampleY, src.Height));
break;
case WarpEdgeBehavior.Primary:
sample = colPrimary;
break;
case WarpEdgeBehavior.Secondary:
sample = colSecondary;
break;
case WarpEdgeBehavior.Transparent:
sample = colTransparent;
break;
case WarpEdgeBehavior.Original:
sample = src.GetColorBgra (x, y);
break;
default:
break;
}
}
samples[sampleCount] = sample;
++sampleCount;
}
*dstPtr = ColorBgra.Blend (samples, sampleCount);
++dstPtr;
}
}
}
}
