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></DIV
><H1
>regions</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2529"
></A
><H2
>Name</H2
>regions — </DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2532"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
>
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> <A
HREF="nano-x-regions.html#GRNEWREGION"
>GrNewRegion</A
> (void);
void <A
HREF="nano-x-regions.html#GRDESTROYREGION"
>GrDestroyRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);
void <A
HREF="nano-x-regions.html#GRUNIONRECTWITHREGION"
>GrUnionRectWithRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-RECT-CAPS"
>GR_RECT</GTKDOCLINK
> *rect);
void <A
HREF="nano-x-regions.html#GRUNIONREGION"
>GrUnionRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);
void <A
HREF="nano-x-regions.html#GRSUBTRACTREGION"
>GrSubtractRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);
void <A
HREF="nano-x-regions.html#GRXORREGION"
>GrXorRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);
void <A
HREF="nano-x-regions.html#GRINTERSECTREGION"
>GrIntersectRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);
void <A
HREF="nano-x-regions.html#GRSETGCREGION"
>GrSetGCRegion</A
> (<GTKDOCLINK
HREF="GR-GC-ID-CAPS"
>GR_GC_ID</GTKDOCLINK
> gc,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);
<GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> <A
HREF="nano-x-regions.html#GRPOINTINREGION"
>GrPointInRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> x,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> y);
int <A
HREF="nano-x-regions.html#GRRECTINREGION"
>GrRectInRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> x,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> y,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> w,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> h);
<GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> <A
HREF="nano-x-regions.html#GREMPTYREGION"
>GrEmptyRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);
<GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> <A
HREF="nano-x-regions.html#GREQUALREGION"
>GrEqualRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> rgn2);
void <A
HREF="nano-x-regions.html#GROFFSETREGION"
>GrOffsetRegion</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-SIZE-CAPS"
>GR_SIZE</GTKDOCLINK
> dx,
<GTKDOCLINK
HREF="GR-SIZE-CAPS"
>GR_SIZE</GTKDOCLINK
> dy);
int <A
HREF="nano-x-regions.html#GRGETREGIONBOX"
>GrGetRegionBox</A
> (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-RECT-CAPS"
>GR_RECT</GTKDOCLINK
> *rect);
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> <A
HREF="nano-x-regions.html#GRNEWPOLYGONREGION"
>GrNewPolygonRegion</A
> (int mode,
<GTKDOCLINK
HREF="GR-COUNT-CAPS"
>GR_COUNT</GTKDOCLINK
> count,
<GTKDOCLINK
HREF="GR-POINT-CAPS"
>GR_POINT</GTKDOCLINK
> *points);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2590"
></A
><H2
>Description</H2
><P
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2593"
></A
><H2
>Details</H2
><DIV
CLASS="REFSECT2"
><A
NAME="AEN2595"
></A
><H3
><A
NAME="GRNEWREGION"
></A
>GrNewRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> GrNewRegion (void);</PRE
></TD
></TR
></TABLE
><P
>Creates a new region structure and returns the ID used to refer to it.
The structure is initialised with a set of default parameters.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the newly created region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2611"
></A
><H3
><A
NAME="GRDESTROYREGION"
></A
>GrDestroyRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrDestroyRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);</PRE
></TD
></TR
></TABLE
><P
>Destroys the region structure with the specified ID.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region structure to destroy</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2627"
></A
><H3
><A
NAME="GRUNIONRECTWITHREGION"
></A
>GrUnionRectWithRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrUnionRectWithRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-RECT-CAPS"
>GR_RECT</GTKDOCLINK
> *rect);</PRE
></TD
></TR
></TABLE
><P
>Makes a union of the specified region and the specified rectangle and
places the result back in the source region.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to modify</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>rect</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> a pointer to the rectangle to add to the region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2648"
></A
><H3
><A
NAME="GRUNIONREGION"
></A
>GrUnionRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrUnionRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);</PRE
></TD
></TR
></TABLE
><P
>Makes a union of the specified source regions and places the result in the
specified destination region.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dst_rgn</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the destination region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn1</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the first source region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn2</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the second source region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2674"
></A
><H3
><A
NAME="GRSUBTRACTREGION"
></A
>GrSubtractRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrSubtractRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);</PRE
></TD
></TR
></TABLE
><P
>Subtracts the second source region from the first source region and places
the result in the specified destination region.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dst_rgn</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the destination region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn1</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the first source region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn2</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the second source region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2700"
></A
><H3
><A
NAME="GRXORREGION"
></A
>GrXorRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrXorRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);</PRE
></TD
></TR
></TABLE
><P
>Performs a logical exclusive OR operation on the specified source regions
and places the result in the destination region. The destination region
will contain only the parts of the source regions which do not overlap.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dst_rgn</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the destination region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn1</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the first source region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn2</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the second source region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2726"
></A
><H3
><A
NAME="GRINTERSECTREGION"
></A
>GrIntersectRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrIntersectRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> dst_rgn,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> src_rgn2);</PRE
></TD
></TR
></TABLE
><P
>Calculates the intersection of the two specified source regions and places
the result in the specified destination region. The destination region
will contain only the parts of the source regions which overlap each other.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dst_rgn</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the destination region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn1</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the first source region</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>src_rgn2</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the second source region</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2752"
></A
><H3
><A
NAME="GRSETGCREGION"
></A
>GrSetGCRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrSetGCRegion (<GTKDOCLINK
HREF="GR-GC-ID-CAPS"
>GR_GC_ID</GTKDOCLINK
> gc,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);</PRE
></TD
></TR
></TABLE
><P
>Sets the clip mask of the specified graphics context to the specified
region. Subsequent drawing operations using this graphics context will not
draw outside the specified region. The region ID can be set to 0 to remove
the clipping region from the specified graphics context.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>gc</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the graphics context to set the clip mask of</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to use as the clip mask</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2773"
></A
><H3
><A
NAME="GRPOINTINREGION"
></A
>GrPointInRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> GrPointInRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> x,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> y);</PRE
></TD
></TR
></TABLE
><P
>Tests whether the specified point is within the specified region, and
then returns either True or False depending on the result.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to examine</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>x</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the X coordinate of the point to test for</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>y</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the Y coordinate of the point to test for</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> True if the point is within the region, or False otherwise</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2804"
></A
><H3
><A
NAME="GRRECTINREGION"
></A
>GrRectInRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int GrRectInRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> x,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> y,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> w,
<GTKDOCLINK
HREF="GR-COORD-CAPS"
>GR_COORD</GTKDOCLINK
> h);</PRE
></TD
></TR
></TABLE
><P
>Tests whether the specified rectangle is contained within the specified
region. Returns GR_RECT_OUT if it is not inside it at all, GR_RECT_ALLIN
if it is completely contained within the region, or GR_RECT_PARTIN if
it is partially contained within the region.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to examine</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>x</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the X coordinates of the rectangle to test</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>y</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the Y coordinates of the rectangle to test</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>w</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the width of the rectangle to test</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>h</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the height of the rectangle to test</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> GR_RECT_PARTIN, GR_RECT_ALLIN, or GR_RECT_OUT</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2844"
></A
><H3
><A
NAME="GREMPTYREGION"
></A
>GrEmptyRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> GrEmptyRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region);</PRE
></TD
></TR
></TABLE
><P
>Determines whether the specified region is empty, and returns GR_TRUE
if it is, or GR_FALSE otherwise.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to examine</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> GR_TRUE if the region is empty, or GR_FALSE if it is not</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2865"
></A
><H3
><A
NAME="GREQUALREGION"
></A
>GrEqualRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GR-BOOL-CAPS"
>GR_BOOL</GTKDOCLINK
> GrEqualRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> rgn1,
<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> rgn2);</PRE
></TD
></TR
></TABLE
><P
>Determines whether the specified regions are identical, and returns GR_TRUE
if it is, or GR_FALSE otherwise.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>rgn1</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the first region to examine</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>rgn2</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the second region to examine</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> GR_TRUE if the regions are equal, or GR_FALSE otherwise</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2891"
></A
><H3
><A
NAME="GROFFSETREGION"
></A
>GrOffsetRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void GrOffsetRegion (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-SIZE-CAPS"
>GR_SIZE</GTKDOCLINK
> dx,
<GTKDOCLINK
HREF="GR-SIZE-CAPS"
>GR_SIZE</GTKDOCLINK
> dy);</PRE
></TD
></TR
></TABLE
><P
>Offsets the specified region by the specified distance.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to offset</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dx</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the distance to offset the region by in the X axis</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>dy</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the distance to offset the region by in the Y axis</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2917"
></A
><H3
><A
NAME="GRGETREGIONBOX"
></A
>GrGetRegionBox ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int GrGetRegionBox (<GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> region,
<GTKDOCLINK
HREF="GR-RECT-CAPS"
>GR_RECT</GTKDOCLINK
> *rect);</PRE
></TD
></TR
></TABLE
><P
>Fills in the specified rectangle structure with a bounding box that would
completely enclose the specified region, and also returns the type of the
specified region.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>region</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the region to get the bounding box of</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>rect</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> pointer to a rectangle structure</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the region type</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN2942"
></A
><H3
><A
NAME="GRNEWPOLYGONREGION"
></A
>GrNewPolygonRegion ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GR-REGION-ID-CAPS"
>GR_REGION_ID</GTKDOCLINK
> GrNewPolygonRegion (int mode,
<GTKDOCLINK
HREF="GR-COUNT-CAPS"
>GR_COUNT</GTKDOCLINK
> count,
<GTKDOCLINK
HREF="GR-POINT-CAPS"
>GR_POINT</GTKDOCLINK
> *points);</PRE
></TD
></TR
></TABLE
><P
>Creates a new region structure, fills it with the region described by the
specified polygon, and returns the ID used to refer to it.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>mode</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the polygon mode to use (GR_POLY_EVENODD or GR_POLY_WINDING)</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>count</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the number of points in the polygon</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>points</I
></TT
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> pointer to an array of point structures describing the polygon</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the ID of the newly allocated region structure, or 0 on error</TD
></TR
></TABLE
><P
></P
></DIV
></DIV
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