Pena Contents
Introduction
Control Pane
Brush Pane
Texture Pane
Effects Pane
Color Picker
Save/Load Pane
Selection Pane
Preferences Pane
Intelligent Canvas
Wacom Bluetooth Stylus
Jot Bluetooth Stylus
 
The Effects Library
Effects Introduction
Color Source Effects
Procedural Source Effects
Color Filter Effects
  • Color Filter Introduction
  • Average
  • Blend
  • Brightness
  • Contrast
  • Desaturate
  • Exchange Channels
  • Invert
  • Maximum
  • Minimum
  • Saturation
  • Swap
  • Tint (Modify HSB)
  • Transparency (Alpha)
  • Spatial Filter Effects
    Math and Logic Effects
    Special Effects
     
    Artists Gallery
    The Artist Gallery
     
    Pena Support
    Troubleshooting

       

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      Effect:Swap
      Category:Color Filter
      Speed:Fast

      Description: The Swap Effect is very useful in Pena. Swap lets you exchange the color channels between Color 1 and Color 2.

      Remember that Color 2 is a working color and never is actually drawn to the Canvas. By using the Swap Effect you can swap Color 1 for Color 2, allowing Color 2 to be used to draw to the Canvas.

      Another use for Swap is to exchange only certain color changes between Color 1 and Color 2. When used this way Swap becomes an image effect.

       
      Options: The Swap Effect has the following Options Pane:

      Swap Red:When set to a Green Check Mark, the Red Channel of Color 1 is exchanged with the Red Channel of Color 2.
      Swap Green:When set to a Green Check Mark, the Green Channel of Color 1 is exchanged with the Green Channel of Color 2.
      Swap Blue:When set to a Blue Check Mark, the Blue Channel of Color 1 is exchanged with the Blue Channel of Color 2.
      Swap Alpha:When set to a Alpha Check Mark, the Alpha Channel of Color 1 is exchanged with the Alpha Channel of Color 2.

      Example: To show the Swap Effect we will take our Arches National Park image and load it into Slot 1 using the Texture Effect. In Slot 2 we have our 2-Color Gradient Effect with default values but Output Color 1 set to Ignore and Output Color 2 set to Replace.

      The image below shows our two source images:

      In Slot 3 we load our Swap Effect. We set Swap Red, Swap Green, and Swap Alpha to a Red X (so they will not be exchanged) and Swap Blue to a Green Check Mark (so the blue channel will be exchanged). The resulting image looks like this:

      Note that the Blue Channel of Color 1 (the Arches Photo) is now the 2-Color Gradient. The Red and Green Channel of Color 1 are unchanged. The blue channel of Color 2 (which we did not show you) is now the blue channel from the Arches photo.

       

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