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
Procedural Source Effects
Color Filter Effects
Spatial Filter Effects
  • Color Filter Introduction
  • Airbrush
  • RGBA Discard
  • RGBA Replace
  • Selective Discard
  • Selective Replace
  • Star Template
  • Stipple
  • Texture Displace
  • XY Ripple
  • XY Rotate
  • XY Twist
  • Math and Logic Effects
    Special Effects
    Artists Gallery
    The Artist Gallery
    Pena Support


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      Category:Spatial Filters

      Description: The Stipple Effect is a very important Effect in Pena. Similar to Airbrush, Stipple modifies the brush your are currently using to have a stipple pattern.

      Stipple only affects Color 1. The areas that are not painted are Discarded, which means that no Effect that follows Stipple can place color there.

      Stipple changes your current brush by introducing a pattern where paint can't go. This gives irregular holes and patterns to your brush stroke. To make the brush stroke even more random use the Fit To Brush option to have the Stipple Effect sized to your brush.

      The Stipple Effect is time sensitive and can use a Clock or Clock Modifier (available in the Stipple Options) to modify the Effect over time.

      Options: The Stipple Effect has the following Options Pane:

      Clock:This Effect can change over time. This control lets you select which of the four Clocks to use (Clocks are assigned in the Brush Pane). Any Green Colored Clock is the one currently in use. Tap the reset button and a Pop Up will appear that lets you reset any of the four Clocks to their initial value. Yellow colored clocks are not in use. Note that you can turn Clocks off by tapping a Green Clock turning all of them yellow.
      Clock Modifier:This value is added to the current Clock. You can use this to change where in time this Effect is, relative to the Clock (this allows different Effects to use the same Clock with different offsets).
      Stipple X Size:This value controls the size of the stipple pattern in the X (horizontal) direction.
      Stipple Y Size:This value controls the size of the stipple pattern in the Y (vertical) direction.
      Stipple Threshold:This value controls the size of each stipple. Smaller values give more paint and less stipple. Higher values give less paint and more stipple.
      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.

      Example: The image below shows the Stipple Effect with a variety of settings:

      • The white pattern is Stipple with the default values
      • The green pattern is Stipple with the default values but Fit To Brush turned on
      • The yellow pattern is Stipple with the default values using a Clock. This changes the Stipple pattern dynamically while you are painting
      • The pink pattern is Stipple with the default values but the X and Y size half the default value (which increases the stipple spacing)

      This next image combines a Texture with the Stipple Effect. In Slot 1 we load our Arches National Park photo as a Texture Effect. In Slot 2 we load our Stipple Effect with default values. We painted on a black Canvas:


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