public override void Render(EffectConfigToken parameters, RenderArgs dstArgs, RenderArgs srcArgs, Rectangle[] rois, int startIndex, int length)
{
CloudEffectConfigToken token = (CloudEffectConfigToken)parameters;
PdnRegion selectionRegion = EnvironmentParameters.GetSelection(srcArgs.Bounds);
this.r1 = token.R1;
this.r2 = token.R2;
this.r3 = token.R3;
for (int i = startIndex; i < startIndex + length; ++i)
{
Rectangle rect = rois[i];
for (int y = rect.Top; y < rect.Bottom; ++y)
{
for (int x = rect.Left; x < rect.Right; ++x)
{
if (selectionRegion.IsVisible(x, y))
{
ColorBgra srcBgra = srcArgs.Surface[x, y];
byte c = (byte)(PerlinNoise2d(x, y, token) * 255);
switch (token.DisplayOption)
{
case CloudEffect.REPLACE_SOURCE:
dstArgs.Surface[x, y] = ColorBgra.FromBgra(srcBgra.B, srcBgra.G, srcBgra.R, c);
break;
case CloudEffect.OVERLAY_PRIMARY:
ColorBgra primary = (ColorBgra)EnvironmentParameters.ForeColor;
dstArgs.Surface[x, y] = ColorBgra.FromBgra(primary.B, primary.G, primary.R, c);
break;
case CloudEffect.OVERLAY_SECONDARY:
ColorBgra secondary = (ColorBgra)EnvironmentParameters.BackColor;
dstArgs.Surface[x, y] = ColorBgra.FromBgra(secondary.B, secondary.G, secondary.R, c);
break;
case CloudEffect.REPLACE_TRANSPARENT:
dstArgs.Surface[x, y] = (0 == srcBgra.A) ? ColorBgra.FromBgra(srcBgra.B, srcBgra.G, srcBgra.R, c) : srcArgs.Surface[x, y];
break;
default:
break;
}
}
}
}
}
}
/// <summary>
/// Returns the left and right visible extents of the current line in relation to the selection scaledBounds
/// </summary>
/// <param name="scaledLineY">The y coordinate in AA scale</param>
/// <returns>The visible extent of the line in AA scale-coordinates</returns>
private Extent TraceLineExtent(int scaledLineY)
{
int lineY = (scaledLineY / settings.AntiAliasLevel) + bounds.Top;
//if y falls outside selection, simply return entire line
if (lineY < bounds.Top || lineY > bounds.Bottom)
{
return(new Extent(bounds.Left, bounds.Right, lineY - bounds.Top).Multiply(settings.AntiAliasLevel));
}
int leftX = bounds.Left;
int rightX = bounds.Right;
//trace line inward from left to right
while (leftX < rightX)
{
if (selectionRegion.IsVisible(leftX, lineY))
{
break;
}
leftX++;
}
while (rightX > 0)
{
if (selectionRegion.IsVisible(rightX, lineY))
{
break;
}
rightX--;
}
return(new Extent(leftX - bounds.Left, rightX - bounds.Left, lineY - bounds.Top).Multiply(settings.AntiAliasLevel));
}
protected override void OnMouseDown(MouseEventArgs e)
{
Point pos = new Point(e.X, e.Y);
this.contiguous = ((ModifierKeys & Keys.Shift) == 0);
if (Document.Bounds.Contains(pos))
{
base.OnMouseDown(e);
PdnRegion currentRegion = Selection.CreateRegion();
// See if the mouse click is valid
if (!currentRegion.IsVisible(pos) && limitToSelection)
{
currentRegion.Dispose();
currentRegion = null;
return;
}
// Set the current surface, color picked and color to draw
Surface surface = ((BitmapLayer)ActiveLayer).Surface;
IBitVector2D stencilBuffer = new BitVector2DSurfaceAdapter(this.ScratchSurface);
Rectangle boundingBox;
int tolerance = (int)(AppEnvironment.Tolerance * AppEnvironment.Tolerance * 256);
if (contiguous)
{
FillStencilFromPoint(surface, stencilBuffer, pos, tolerance, out boundingBox, currentRegion, limitToSelection);
}
else
{
FillStencilByColor(surface, stencilBuffer, surface[pos], tolerance, out boundingBox, currentRegion, limitToSelection);
}
Point[][] polygonSet = PdnGraphicsPath.PolygonSetFromStencil(stencilBuffer, boundingBox, 0, 0);
OnFillRegionComputed(polygonSet);
}
base.OnMouseDown(e);
}