Function Context.setDash
Sets the dash pattern to be used by stroke(). A dash
pattern is specified by dashes, an array of positive values.
Each value provides the length of alternate "on" and
"off" portions of the stroke. The offset specifies an offset
into the pattern at which the stroke begins.
Each "on" segment will have caps applied as if the segment were a separate sub-path. In particular, it is valid to use an "on" length of 0.0 with CAIRO_LINE_CAP_ROUND or CAIRO_LINE_CAP_SQUARE in order to distributed dots or squares along a path.
Prototype
void setDash(
const(double[]) dashes,
double offset
);
Note
The length values are in user-space units as
evaluated at the time of stroking. This is not necessarily
the same as the user space at the time of setDash().
If dashes is empty dashing is disabled.
If dashes.length is 1 a symmetric pattern is assumed with alternating
on and off portions of the size specified by the single value
in dashes.
If any value in dashes is negative, or if all values are 0, then
cr will be put into an error state with a
status of CAIRO_STATUS_INVALID_DASH.
Parameters
| Name | Description |
|---|---|
| dashes | an array specifying alternate lengths of on and off stroke portions |
| offset | an offset into the dash pattern at which the stroke should start |
Authors
| Johannes Pfau | cairoD |
| Andrej Mitrovic | cairoD |
| cairo team | cairo |
Copyright
License
| cairoD wrapper/bindings | Boost License 1.0 |
| cairo | LGPL 2.1 / MPL 1.1 |