PgSetFillTransPat, PgSetFillTransPatCx

PgSetFillTransPat(), PgSetFillTransPatCx()

Set the draw transparency for fills

Synopsis:

void PgSetFillTransPat( PgPattern_t pat );

void PgSetFillTransPatCx( PhGC_t *gc,
                          PgPattern_t pat );

Library:

ph

Description:

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.

Examples:

// let background show through for half the pixels
PgSetFillTransPat( Pg_PAT_HALF );

// disable transparency mask, draw normally
PgSetFillTransPat( Pg_PAT_DEFAULT );

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No

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