Pena Contents
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
  • Color Source Introduction
  • Color
  • Color, Clock
  • Color, HSBA Mask
  • Color, RGBA Mask
  • Drawing
  • Drawing, Blur
  • Drawing, Edge Detect
  • Drawing, Emboss
  • Drawing, Oil
  • Drawing, Pixelate
  • Drawing, Ripple
  • Drawing, Rotate
  • Drawing, Twist
  • Texture
  • Texture, Blur
  • Texture, Edge Detect
  • Texture, Emboss
  • Texture, Oil
  • Texture, Pixelate
  • Texture, Ripple
  • Texture, Rotate
  • Texture, Twist
    Procedural Source Effects
    Color Filter Effects
    Spatial Filter Effects
    Math and Logic Effects
    Special Effects
    Artists Gallery
    The Artist Gallery
    Pena Support


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      Category:Color Sources

      Description: The Drawing Effect lets you use your 'most recent' drawing as the color source.

      The Drawing Effect is the most basic. It lets you paint the Current Drawing Texture where ever you stroke on the Canvas.

      If you enable the Fit To Brush Option you will paint with the Current Drawing sized to your brush.


      You might want to also watch the Pena Tutorial #7 - Using the 'Drawing' Texture video tutorial.

      Under normal use, each time you stop painting on the Canvas (eg., lift your finger) the current Canvas is stored in a special texture called the Drawing Texture.

      You can change this behavior using the Drawing Control icon on the Control Pane. You can turn off the automatic saving of the Canvas into the Drawing Texture, and instead specify manually when you want the Drawing Texture updated.

      Leaving Drawing on automatic update allows you to paint with 'feedback'. Each time you start painting, what you painted last will be used as input to what you are painting now.

      Putting Drawing on manual update lets you treat the last Canvas stored in the Drawing Texture as a more permanent texture, not changing each time you paint.

      Also keep in mind that unlike other Textures, which automatically orient to the device orientation, the Drawing Texture, because it is a copy of the Canvas, does not auto-orient, but stays in the original orientation it was created in.

      Options: The Drawing Effect has the following Options Pane:

      Invert Red:If set to a Red X, the Red channel is not color inverted. If set to a Green Check Mark the Red Channel is color inverted.
      Invert Green:If set to a Red X, the Green channel is not color inverted. If set to a Green Check Mark the Green Channel is color inverted.
      Invert Blue:If set to a Red X, the Blue channel is not color inverted. If set to a Green Check Mark the Blue Channel is color inverted.
      Invert Alpha:If set to a Red X, the Alpha (transparency) channel is not color inverted. If set to a Green Check Mark the Alpha (transparency) Channel is color inverted.
      Fit To Brush:If set to a Red X the Effect spans the screen such that as you paint you reveal the Effect. When set to a Green Check Mark the Effect is sized to the brush such that as you paint the entire Effect is within the brush itself.
      Output Color 1:By default this is set to REPLACE which means that the set color will be output to Color 1. You can change this as explained in Options Pane Color Mixers.
      Output Color 2:By default this is set to IGNORE which means that the Color 2 will be ignored (the original Color 2 will be kept). You can change this as explained in Options Pane Color Mixers.

      Example: To show a use for the Drawing Effect we started by using the Selection Pane to generate the text selection mask of the word SPIN. We then colored in that selection mask to get the following:

      We turned off Auto-Drawing Update and made sure to do a Manual Copy into the Drawing buffer. We then loaded the Drawing Effect and turned on Fit To Brush. Using a rotating brush we painted the screen from upper right to lower left:

      As you can see, the original large SPIN was fit to our brushes size and then rotated as we drew with it. The original large SPIN is stored in our Drawing Texture.

      As a note... the two images above are the same size screen shot. So you can see how much bigger the original SPIN is, that is stored into the Drawing Texture, versus how it was applied to our much small brush, in the second image.


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