Performs a flood-fill starting at x,y coordinates. newAlpha is the transparent value used to fill the area.
Namespace: HiComponents.IEvolutionAssembly: IEvolution2 (in IEvolution2.dll) Version: 10.1.0.0
Syntax
C# | Visual Basic | Visual C++ |
public void CastAlpha( int x, int y, int newAlpha, int tolerance )
Public Sub CastAlpha ( _ x As Integer, _ y As Integer, _ newAlpha As Integer, _ tolerance As Integer _ )
public: void CastAlpha( int x, int y, int newAlpha, int tolerance )
Parameters
- x
- Int32
Flood-fill starting horizontal position.
- y
- Int32
Flood-fill starting vertical position.
- newAlpha
- Int32
The alpha used to paint (0=transparent, 255=opaque).
- tolerance
- Int32
Specifies the maximum difference from the starting pixel (0=no tolerance, pixels must be equals).
Examples
CopyC#
// assuming X,Y = mouse coordinates, makes the area transparent ieViewer1.Image.CastAlpha( ieViewer1.Image.XClientToBitmap(X), ieViewer1.Image.YClientToBitmap(Y), 0,0);