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Chapters
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
A, B, C, D, E



CHAPTER 10. DRAWING OPTIONS

=> :line-dashes [Option]
=> line-style-dashes line-style [Generic Function]
Controls whether lines or arcs are drawn as dashed figures, and if so, what the dashing pattern
is. Possible values are:
(See also make-contrasting-dash-patterns.)

10.3.2 Contrasting Dash Patterns

=> make-contrasting-dash-patterns n &optional k [Function]
If k is not supplied, this returns a vector of n dash patterns with recognizably different appear-
ance. Elements of the vector are guaranteed to be acceptable values for :dashes, and do not
include nil, but their class is not otherwise specified. The vector is a fresh object that may be
modified.

If k is supplied, it must be an integer between 0 and n + 1 (inclusive), in which case make-
contrasting-dash-patterns
returns the k'th dash-pattern rather than returning a vector of
dash-patterns.

If the implementation does not have n different contrasting dash patterns, make-contrasting-
dash-patterns
signals an error. This will not happen unless n is greater than eight.

=> contrasting-dash-pattern-limit port [Generic Function]
Returns the number of contrasting dash patterns that can be rendered on any medium on the
port port. Implementations are encouraged to make this as large as possible, but it must be
at least 8. All classes that obey the port protocol must implement a method for this generic
function.


Page 85 Table of Contents Index Page 87
Chapters
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
A, B, C, D, E