User Guide

The Image Hose334
How it Works
The Image Hose is a brush. To use it,
you must first load it with images. The
images are kept in special nozzle files.
On a garden hose, you attach a nozzle
to control the flow of water; in Corel
Painter, you attach a nozzle to the
Image Hose to control its medium—
images.
A nozzle file can contain any number
of images. Usually, the images are
similar and form a logical series—that
is, the images progress along some
order. For example, the images might
increase in size, or advance in angle.
It is not necessary for images to
progress in a logical series, but the
Image Hose is more effective when
they do.
“Indexing” refers to the method used
to select particular images from the
many images in a nozzle file. Which
input to use for indexing is controlled
in the Brush Creator by modifying the
Image Hose settings on the Stroke
Designer tab. You can hose images
sequentially, at random, based on
pressure, stroke direction, and several
other factors.
The images are indexed so that Corel
Painter can locate and paint specific
images on request. As you paint with
the Image Hose, you can request
specific images from the nozzle index
by varying your input value.
Increasing an input value takes
images from later in the series. For
example, you can set up the nozzle so
that by pressing harder with a
pressure-sensitive stylus, you paint
with larger images.
You control the images themselves in
the nozzle file. If you want more
variety in the images, create more
images in the nozzle file. “Creating
Nozzles for the Image Hose” on
page 340 covers designing and
creating nozzle files.
As your Image Hose requirements
become more exacting, you can create
complex nozzles that involve two
progressions—for example, images get
larger and change angle. In this case,
you’ll use one input factor to
determine image size, and use a
second factor to determine image
angle. This creates a 2-Rank Nozzle.
A 2-Rank Nozzle progresses in two dimensions.
In this example, the first rank changes angle,
the second rank changes size.
Using the Image Hose
The Image Hose is easy to use and
offers a number of options for the
behavior of “nozzle spray.”
As with other Corel Painter brushes,
the Image Hose has several variants.
These built-in variants combine
nozzle control factors with brush
settings to create different hose effects.