private ColorBgra ComputeCellColor(int x, int y, ImageSurface src, int cellSize, Gdk.Rectangle srcBounds)
{
Gdk.Rectangle cell = GetCellBox(x, y, cellSize);
cell.Intersect(srcBounds);
int left = cell.Left;
int right = cell.Right - 1;
int bottom = cell.Bottom - 1;
int top = cell.Top;
ColorBgra colorTopLeft = src.GetColorBgra(left, top);
ColorBgra colorTopRight = src.GetColorBgra(right, top);
ColorBgra colorBottomLeft = src.GetColorBgra(left, bottom);
ColorBgra colorBottomRight = src.GetColorBgra(right, bottom);
ColorBgra c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c);
}
private ColorBgra ComputeCellColor(int x, int y, ImageSurface src, int cellSize, Gdk.Rectangle srcBounds)
{
Gdk.Rectangle cell = GetCellBox(x, y, cellSize);
cell.Intersect(srcBounds);
int left = cell.Left;
int right = cell.GetRight();
int bottom = cell.GetBottom();
int top = cell.Top;
ColorBgra colorTopLeft = src.GetColorBgraUnchecked(left, top).ToStraightAlpha();
ColorBgra colorTopRight = src.GetColorBgraUnchecked(right, top).ToStraightAlpha();
ColorBgra colorBottomLeft = src.GetColorBgraUnchecked(left, bottom).ToStraightAlpha();
ColorBgra colorBottomRight = src.GetColorBgraUnchecked(right, bottom).ToStraightAlpha();
ColorBgra c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c.ToPremultipliedAlpha());
}
private ColorBgra ComputeCellColor(int x, int y, RenderArgs src, int cellSize)
{
Rectangle cell = GetCellBox(x, y, cellSize);
cell.Intersect(src.Bounds);
int left = cell.Left;
int right = cell.Right - 1;
int bottom = cell.Bottom - 1;
int top = cell.Top;
ColorBgra colorTopLeft = src.Surface[left, top];
ColorBgra colorTopRight = src.Surface[right, top];
ColorBgra colorBottomLeft = src.Surface[left, bottom];
ColorBgra colorBottomRight = src.Surface[right, bottom];
ColorBgra c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c);
}
private ColorBgra ComputeCellColor(int x, int y, ISurface src, int cellSize, Rectangle srcBounds)
{
var cell = GetCellBox(x, y, cellSize);
cell.Intersect(srcBounds);
var left = cell.Left;
var right = cell.Right;
var bottom = cell.Bottom;
var top = cell.Top;
var colorTopLeft = src.GetPoint(left, top);
var colorTopRight = src.GetPoint(right, top);
var colorBottomLeft = src.GetPoint(left, bottom);
var colorBottomRight = src.GetPoint(right, bottom);
var c = ColorBgra.BlendColors4W16IP(colorTopLeft, 16384, colorTopRight, 16384, colorBottomLeft, 16384, colorBottomRight, 16384);
return(c);
}
public unsafe override void Render(
Surface src,
Surface dst,
PixelFarm.Drawing.Rectangle[] rois,
int startIndex, int length)
{
RotateZoomEffectConfigToken token = (RotateZoomEffectConfigToken)Parameters;
RotateZoomEffectConfigToken.RzInfo rzInfo = token.ComputedOnce;
//Rectangle bounds = this.EnvironmentParameters.GetSelection(dstArgs.Bounds).GetBoundsInt();
Rectangle bounds = SelectionBounds;
bounds.Intersect(dst.Bounds);
//PdnRegion selection = this.EnvironmentParameters.GetSelection(src.Bounds);
Rectangle srcBounds = src.Bounds;
int srcMaxX = srcBounds.Width - 1;
int srcMaxY = srcBounds.Height - 1;
float dsxdx = rzInfo.dsxdx;
float dsydx = rzInfo.dsydx;
float dszdx = rzInfo.dszdx;
float dsxdy = rzInfo.dsxdy;
float dsydy = rzInfo.dsydy;
float dszdy = rzInfo.dszdy;
float zoom = token.Zoom;
uint srcMask = token.SourceAsBackground ? 0xffffffff : 0;
bool tile = token.Tile;
float divZ = 0.5f * (float)Math.Sqrt(dst.Width * dst.Width + dst.Height * dst.Height);
float centerX = (float)dst.Width / 2.0f;
float centerY = (float)dst.Height / 2.0f;
float tx = (token.Offset.X) * dst.Width / 2.0f;
float ty = (token.Offset.Y) * dst.Height / 2.0f;
uint tilingMask = tile ? 0xffffffff : 0;
for (int i = startIndex; i < startIndex + length; ++i)
{
Rectangle rect = rois[i];
float cx = rzInfo.startX;
float cy = rzInfo.startY;
float cz = rzInfo.startZ;
float mcl = ((rect.Left - tx) - dst.Width / 2.0f);
cx += dsxdx * mcl;
cy += dsydx * mcl;
cz += dszdx * mcl;
float mct = ((rect.Top - ty) - dst.Height / 2.0f);
cx += dsxdy * mct;
cy += dsydy * mct;
cz += dszdy * mct;
for (int y = rect.Top; y < rect.Bottom; ++y)
{
ColorBgra *dstPtr = dst.GetPointAddressUnchecked(rect.Left, y);
ColorBgra *srcPtr = src.GetPointAddressUnchecked(rect.Left, y);
float rx = cx;
float ry = cy;
float rz = cz;
for (int x = rect.Left; x < rect.Right; ++x)
{
if (rz > -divZ)
{
float div = divZ / (zoom * (divZ + rz));
float u = (rx * div) + centerX;
float v = (ry * div) + centerY;
if (tile || (u >= -1 && v >= -1 && u <= srcBounds.Width && v <= srcBounds.Height))
{
unchecked
{
int iu = (int)Math.Floor(u);
uint sxfrac = (uint)(256 * (u - (float)iu));
uint sxfracinv = 256 - sxfrac;
int iv = (int)Math.Floor(v);
uint syfrac = (uint)(256 * (v - (float)iv));
uint syfracinv = 256 - syfrac;
uint wul = (uint)(sxfracinv * syfracinv);
uint wur = (uint)(sxfrac * syfracinv);
uint wll = (uint)(sxfracinv * syfrac);
uint wlr = (uint)(sxfrac * syfrac);
uint inBoundsMaskLeft = tilingMask;
uint inBoundsMaskTop = tilingMask;
uint inBoundsMaskRight = tilingMask;
uint inBoundsMaskBottom = tilingMask;
int sx = iu;
if (sx < 0)
{
sx = srcMaxX + ((sx + 1) % srcBounds.Width);
}
else if (sx > srcMaxX)
{
sx = sx % srcBounds.Width;
}
else
{
inBoundsMaskLeft = 0xffffffff;
}
int sy = iv;
if (sy < 0)
{
sy = srcMaxY + ((sy + 1) % srcBounds.Height);
}
else if (sy > srcMaxY)
{
sy = sy % srcBounds.Height;
}
else
{
inBoundsMaskTop = 0xffffffff;
}
int sleft = sx;
int sright;
if (sleft == srcMaxX)
{
sright = 0;
inBoundsMaskRight = (iu == -1) ? 0xffffffff : tilingMask;
}
else
{
sright = sleft + 1;
inBoundsMaskRight = inBoundsMaskLeft & 0xffffffff;
}
int stop = sy;
int sbottom;
if (stop == srcMaxY)
{
sbottom = 0;
inBoundsMaskBottom = (iv == -1) ? 0xffffffff : tilingMask;
}
else
{
sbottom = stop + 1;
inBoundsMaskBottom = inBoundsMaskTop & 0xffffffff;
}
uint maskUL = inBoundsMaskLeft & inBoundsMaskTop;
ColorBgra cul = ColorBgra.FromUInt32(src.GetPointUnchecked(sleft, stop).Bgra & maskUL);
uint maskUR = inBoundsMaskRight & inBoundsMaskTop;
ColorBgra cur = ColorBgra.FromUInt32(src.GetPointUnchecked(sright, stop).Bgra & maskUR);
uint maskLL = inBoundsMaskLeft & inBoundsMaskBottom;
ColorBgra cll = ColorBgra.FromUInt32(src.GetPointUnchecked(sleft, sbottom).Bgra & maskLL);
uint maskLR = inBoundsMaskRight & inBoundsMaskBottom;
ColorBgra clr = ColorBgra.FromUInt32(src.GetPointUnchecked(sright, sbottom).Bgra & maskLR);
ColorBgra c = ColorBgra.BlendColors4W16IP(cul, wul, cur, wur, cll, wll, clr, wlr);
if (c.A == 255 || !token.SourceAsBackground)
{
dstPtr->Bgra = c.Bgra;
}
else
{
*dstPtr = PaintFx.UserBlendOps.NormalBlendOp.ApplyStatic(*srcPtr, c);
}
}
}
else
{
if (srcMask != 0)
{
dstPtr->Bgra = srcPtr->Bgra;
}
else
{
dstPtr->Bgra = 0;
}
}
}
else
{
if (srcMask != 0)
{
dstPtr->Bgra = srcPtr->Bgra;
}
else
{
dstPtr->Bgra = 0;
}
}
rx += dsxdx;
ry += dsydx;
rz += dszdx;
++dstPtr;
++srcPtr;
}
cx += dsxdy;
cy += dsydy;
cz += dszdy;
}
}
}
