System information

7.9 Changing the color of text or line-art objects
Change the color, and specify the fill and stroke attributes
You can change the fill or stroke color of text or line-art objects in your PDF documents. You can
select a color from the same color space, from a different one or from the User Swatches. Once
you have selected a color, you can also specify the object’s fill or stroke. See Fill attributes on page
121 and Stroke attributes on page 121.
Fill attributes
If you are going to specify the fill color of polygons or loops, you will be able to select the fill attribute
(regular) Fill or EOfill. Polygons and loops can be distinguished from other line-art shapes in the
sence that that they are compound paths with intersecting lines. To determine whether a point is
part of the shape or not, different rules can be applied: the standard rule or the even-odd (EO)
rule. These rules determine the filling method of the shape.
B. Polygon with standard fill
A. Polygon with EOFill
D. Loop with standard fillC. Loop with EOFill
The even-odd rule supposes that you draw a line between a point inside the shape outline (x) and
a point (y) outside its outline. If that line crosses the line of the shape an odd number of times, the
shape area to which the point (x) belongs, is filled. If the number of crossings is even, the area is
not filled.
Stroke attributes
Line art, but also text, is basically made up of paths. The outline of a path is called a stroke and a
stroke can have the following attributes:
• Weight. The weight is the thickness of a stroke, usually expressed in points.
• Color.
• Dash pattern. You use the dash pattern to create dashed lines. You can do this by specifying
the length of the line segments and the space (gaps) between them.
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