 MIRRORED SECTIONS is a kaleidoscope, with every other section a mirror image of the
previous one. MIRRORED SECTIONS deforms in two dimensions.
How Does It Work?
Only one parameter, Number Of Mirrors, controls the deformation. This parameter sets the number of
mirrors that will make up the pattern. The sections are equally spaced and all pass through the origin. The part of the linked background texture that will actually make up the sections is V-shaped and centered on
the top half of the texture. The width of the section is controlled by the number of mirrors. For example, one mirror requires the whole top half of the texture (which gets mirrored for the bottom half).
Note: Because the value you give to Number Of Mirrors constitutes just half of the sections, the total number of sections will always be double that amount.
Hints!
Using one mirror, it's possible to generate seamlessly tiled textures in the vertical direction. By using a
second one-mirror Mirrored Sections rotated by 90 degrees, you can create a fully seamless tiled texture (see figure1). However, the resulting texture will have an obvious pattern in it because of the mirroring
and will only look good applied to some patterns.
Bump MIRRORED SECTIONS tends to show where the mirrors are. This is especially true if the
underlying pattern has steep slopes. When steep slopes are mirrored, the mirrored sections will show up as sharp peaks. This artifact can show up in the color and percent channels too, but it doesn't stand out
as much. This is a difficult problem to overcome but moving the underlying texture a bit sometimes shifts it to a better place. You can try to smooth the peaks by lowering the contrast and/or roughness of the
background pattern. The flatter the texture, the less you can detect where the mirrors are.
|
