The Viewport Canvas
Brush Images dialog lets you choose an image and mask to paint with
Brush Image feature.
Here you can choose from
the provided images and masks or from any number of custom brushes
that you define.
The dialog comprises
a row of preset color brushes, a row of preset mask images, a list
of custom maps where you can use your own images as brush maps,
and two buttons for managing the maps. To see the name of any brush
image, hover the mouse over its thumbnail.
To use a map as a brush
image, click its thumbnail; the map replaces the map for the thumbnail
you clicked on the Brush Images rollout and closes the Brush Images
- Color Presets
Choose a color image
to paint with. The presets are fixed; to use your own brushes, see
Custom Maps, following.
- Mask Presets
Choose a mask image to paint
with. The mask image sets the opacity based on the brightness of
each pixel in the mask image. White areas are fully opaque (apply the
full color of the underlying brush image); black areas are fully
transparent (no paint is applied), and gray areas use in-between opacities..
So, for example, the mask preset with a white square on a black
background converts the default circular brush outline to a square one.
The presets are fixed;
to use your own masks, see Custom Maps, following.
- Custom Maps
Lists custom brush images.
Two are included: a yellow star on a black background and a star-shaped mask.
To create a custom brush,
make a square image in a paint program. Or, to make a custom mask
image, make a black-and-white image (white is transparent, shades
of gray produce degrees of transparency, and black is completely
opaque). Save the image as a TIFF-format image file in the folder
that opens when you click the Browse Custom Maps Dir button. The
new brush then shows up in the Custom Maps list the next time you
open the Brush Selection dialog, or after you click Reload Custom
TipThere’s no inherent
difference between a brush image and a mask; only the way Viewport
Canvas uses them. You can use a grayscale image as a brush, or a
color image as a mask. In the latter case, Viewport Canvas uses
only the Value (brightness) information from the image for masking purposes.
- Browse Custom Maps Dir
Opens a file dialog set
to the disk directory that holds custom maps. You can’t change the
location, but you can use this dialog to copy your own files to
the custom-maps directory, to copy or delete files, or any other
standard file function.
- Reload Custom Maps
After adding or deleting custom-map
files, click this button to update the Custom Maps listing.