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Set the draw transparency for fills
void PgSetFillTransPat( PgPattern_t pat );
void PgSetFillTransPatCx( PhGC_t *gc,
PgPattern_t pat );
ph
These functions set a masking pattern and applies it to fills.
You should use them in combination with
PgSetFillColor*() or
PgSetFillDither*().
PgSetFillTransPat() works on the current graphics context,
while you can specify the graphics context gc for
PgSetFillTransPatCx().
These functions use the same patterns as
PgSetFillDither*(),
To disable
transparency and draw normally, specify the
Pg_PAT_DEFAULT pattern.
|
Because of speed considerations, some graphics drivers don't
draw strokes with a transparency mask and, as a result,
ignore the stroke transparency pattern. |
// let background show through for half the pixels
PgSetFillTransPat( Pg_PAT_HALF );
// disable transparency mask, draw normally
PgSetFillTransPat( Pg_PAT_DEFAULT );
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PgDefaultFill*(),
PgSetDrawMode*(),
PgSetFillColor*(),
PgSetFillDither*(),
PgSetFillXORColor*(),
PgSetStrokeTransPat*(),
PgSetTextTransPat*()
“Drawing attributes”
and
“Arcs, ellipses, polygons, and rectangles”
in the Raw Drawing and Animation chapter of the
Photon Programmer's Guide
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