Overriding a Texture on a Pencil Line

A pencil line can be drawn with a texture but also painted with a texture swatch. With the Colour-Override node, you can override the pencil line's texture or texture fill and replace it by another one, or you can animate the texture's position.

With the Edit Gradient and Texture tool, you can modify the size and position for both types of textures on a pencil line; the drawing texture and the filling texture. By doing that, you are actually modifying the texture's matrix.

When you paint a pencil line with a bitmap colour swatch, you can override the position of the texture fill using the Colour-Override node and a Peg.

You can modify and animate a pencil texture's position using the Colour-Override node and a Peg node. This lets you create a shaky line style which is a very popular design style. The main issue with this style is that it works well in traditional and tradigital animation, when the artist draws the line differently on each drawing, but it does not work in cut-out animation where the same drawing is used for the entire animation. The same issue happens when the same drawing is held for more than a few frames. The line moves during the animation, but stops moving during the drawing hold, which looks bad.

With the Colour-Override node, you can animate the position of the pencil line texture independently from the drawing exposure. Even if a drawing's exposure is held over several frames, the line will move.