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PgSetUserClip(), PgSetUserClipAbsolute(), PgSetUserClipCx(), PgSetUserClipAbsoluteCx()

Restrict subsequent draws

Synopsis:

void PgSetUserClip( PhRect_t const *ClipRect );

void PgSetUserClipAbsolute(
                      PhRect_t const *ClipRect );

void PgSetUserClipCx( PhGC_t *gc,
                      PhRect_t const *ClipRect );

void PgSetUserClipAbsoluteCx(
                      PhGC_t *gc,
                      PhRect_t const *ClipRect );

Library:

ph

Description:

These functions restrict all subsequent draws to the area defined by the PhRect_t pointed to by ClipRect. To disable the user clipping rectangle, pass ClipRect as NULL.

PgSetUserClip*() sets the user clipping rectangle relative to the current translation whereas PgSetUserClipAbsolute*() sets the rectangle independent of the current translation.

The user clipping area is set independent of the clipping that's set by PgSetClipping*() and PgSetMultiClip*().

All subsequent draws will be clipped to the intersection of the clipping rectangles set by PgSetClipping*(), PgSetMultiClip*(), and PgSetUserClip*().

Unlike PgSetClipping*(), these functions don't flush the draw buffer.

PhAttach(), PhReattach(), and PgSetRegion() reset the clipping rectangle to the full size of the region.

These functions emit a draw command.

PgSetUserClip() and PgSetUserClipAbsolute() work on the current graphics context, while you can specify the graphics context gc for PgSetUserClipCx() and PgSetUserClipAbsoluteCx().

Classification:

Photon

See also:

PgClearTranslation(), PgSetClipping(), PgSetMultiClip(), PgSetRegion(), PgSetTranslation(), PhAttach(), PhReattach(), PhRect_t