Testing of Alpha and Painting Methods

These images were generated using the demo:
\Demos\InputOutput\EveryMethod\EveryMethod.dpr

All Test Results
- Analysis Methods
- Color Adjustment Methods
- Color Depth Methods
- Alpha and Painting Methods
- Effects Methods
- Geometric Methods
- Filter Methods
- Smoothing Methods
- Other Methods


// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );

  


 AlphaFill

// Gradient fill the alpha channel with fully transparent on the left to fully opaque on the right
ImageEnView1.Proc.AlphaFill( 0, 255, gdHorizontal );

  


 CastAlpha

// Flood file transparency from the top-left of the image
ImageEnView1.Proc.CastAlpha( 0, 0, 0, 50 );

  


 CastColor

// Perform a red flood fill starting at 0,0 (with a tolerance of 10)
ImageEnView1.Proc.CastColor( 0, 0, clRed, 10 );

  


 CastColorRange

// Change all dark values (from dark gray to black) to black
ImageEnView1.Proc.CastColorRange( CreateRGB(0, 0, 0),
                                  CreateRGB(100, 100, 100),
                                  CreateRGB(0, 0, 0));

  


 FeatherAlphaEdges

// Make colors similar to white transparent and then feather the alpha edges
ImageEnView1.Proc.SetTransparentColors( CreateRGB( 156, 156, 156 ), CreateRGB( 255, 255, 255 ), 0 );
ImageEnView1.Proc.FeatherAlphaEdges( 10 );

  


 Fill

// Fill selection with red
ImageEnView1.Proc.Fill( clRed );

  


 GradientFill

// Fill selection with a yellow to red vertical gradient
ImageEnView1.Proc.GradientFill( clYellow, clRed, gdVertical );

  


 PaintMark

// Draw a black pixel every 10 pixels horizontally and vertically
ImageEnView1.Proc.PaintMark( 10, CreateRGB(0, 0, 0) );

  


 PaintPenMarker

// Draw a pointer over the image (where background is close to white)
// Set PaintPenMarker_Background_Tolerance to MAXINT to force pointer drawing
ImageEnView1.Proc.PaintPenMarker( ImageEnView1.IEBitmap.Width div 5,
                                  ImageEnView1.IEBitmap.Height div 8,
                                  30,
                                  clRed, clWhite, PaintPenMarker_Background_Tolerance );

  


 Random

// Fill with pixels of random values (Gaussian distribution)
ImageEnView1.Proc.Random();

  


 RemoveChromaKey

// Load Chroma-Key image
ImageEnView1.IO.LoadFromFile( C:\ChromaKey.jpg );



// Guess the background color
KeyColorRGB := ImageEnView1.Proc.GuessChromaKeyColor();

// Remove Chromakey from the image (will become transparent)
ImageEnView1.Proc.RemoveChromaKey( KeyColorRGB, 0.21, 30, 2, 0 );




 SetTransparentColors

// Make colors similar to white transparent
ImageEnView1.Proc.SetTransparentColors( CreateRGB(255, 255, 255), 50, 0 );

  

See Also

- Analysis Methods
- Color Adjustment Methods
- Color Depth Methods
- Alpha and Painting Methods
- Effects Methods
- Geometric Methods
- Filter Methods
- Smoothing Methods
- Other Methods

---