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gts-devel-0.7.6-15.fc15.i686.rpm

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><H1
><A
NAME="GTS-BOOLEAN-OPERATIONS"
></A
>Boolean operations</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN12213"
></A
><H2
>Name</H2
>Boolean operations&nbsp;--&nbsp;set operations between surfaces: union, intersection, difference.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN12216"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>&#13;#include &lt;gts.h&gt;


#define     <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER-CLASS:CAPS"
>GTS_SURFACE_INTER_CLASS</A
>         (klass)
#define     <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER:CAPS"
>GTS_SURFACE_INTER</A
>               (obj)
#define     <A
HREF="gts-boolean-operations.html#GTS-IS-SURFACE-INTER:CAPS"
>GTS_IS_SURFACE_INTER</A
>            (obj)
            <A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
>GtsSurfaceInterClass</A
>;
            <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
>;

<GTKDOCLINK
HREF="GSLIST"
>GSList</GTKDOCLINK
>*     <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTERSECTION"
>gts_surface_intersection</A
>        (<A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s1,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s2,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree1,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree2);
<A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
>GtsSurfaceInterClass</A
>* <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER-CLASS"
>gts_surface_inter_class</A
>
                                            (void);
<A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
>* <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER-NEW"
>gts_surface_inter_new</A
>      (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
>GtsSurfaceInterClass</A
> *klass,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s1,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s2,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree1,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree2,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> is_open1,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> is_open2);
<GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
>    <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER-CHECK"
>gts_surface_inter_check</A
>         (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
> *si,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> *closed);
enum        <A
HREF="gts-boolean-operations.html#GTSBOOLEANOPERATION"
>GtsBooleanOperation</A
>;
<GTKDOCLINK
HREF="VOID"
>void</GTKDOCLINK
>        <A
HREF="gts-boolean-operations.html#GTS-SURFACE-INTER-BOOLEAN"
>gts_surface_inter_boolean</A
>       (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
> *si,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *surface,
                                             <A
HREF="gts-boolean-operations.html#GTSBOOLEANOPERATION"
>GtsBooleanOperation</A
> op);
<A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
>* <A
HREF="gts-boolean-operations.html#GTS-SURFACE-IS-SELF-INTERSECTING"
>gts_surface_is_self_intersecting</A
>
                                            (<A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s);</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN12254"
></A
><H2
>Description</H2
><P
>The three-dimensional curve intersection of two surfaces is described by a <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
> object. This object contains additional information which allows to compute all the set operations between the two surfaces.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN12259"
></A
><H2
>Details</H2
><DIV
CLASS="REFSECT2"
><A
NAME="AEN12261"
></A
><H3
><A
NAME="GTS-SURFACE-INTER-CLASS:CAPS"
></A
>GTS_SURFACE_INTER_CLASS()</H3
><PRE
CLASS="PROGRAMLISTING"
>#define     GTS_SURFACE_INTER_CLASS(klass)</PRE
><P
>Casts <CODE
CLASS="PARAMETER"
>klass</CODE
> to <A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
><SPAN
CLASS="TYPE"
>GtsSurfaceInterClass</SPAN
></A
>.</P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12273"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>klass</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a descendant of <A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
><SPAN
CLASS="TYPE"
>GtsSurfaceInterClass</SPAN
></A
>.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12280"
></A
><H3
><A
NAME="GTS-SURFACE-INTER:CAPS"
></A
>GTS_SURFACE_INTER()</H3
><PRE
CLASS="PROGRAMLISTING"
>#define     GTS_SURFACE_INTER(obj)</PRE
><P
>Casts <CODE
CLASS="PARAMETER"
>obj</CODE
> to <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
>.</P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12292"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>obj</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a descendant of <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
>.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12299"
></A
><H3
><A
NAME="GTS-IS-SURFACE-INTER:CAPS"
></A
>GTS_IS_SURFACE_INTER()</H3
><PRE
CLASS="PROGRAMLISTING"
>#define     GTS_IS_SURFACE_INTER(obj)</PRE
><P
>Evaluates to <TT
CLASS="LITERAL"
>TRUE</TT
> if <CODE
CLASS="PARAMETER"
>obj</CODE
> is a <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
>, <TT
CLASS="LITERAL"
>FALSE</TT
> otherwise.</P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12313"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>obj</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-object-class.html#GTSOBJECT"
><SPAN
CLASS="TYPE"
>GtsObject</SPAN
></A
>.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12320"
></A
><H3
><A
NAME="GTSSURFACEINTERCLASS"
></A
>GtsSurfaceInterClass</H3
><PRE
CLASS="PROGRAMLISTING"
>typedef struct {
  GtsObjectClass parent_class;
} GtsSurfaceInterClass;</PRE
><P
>The surface intersection class.</P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12327"
></A
><H3
><A
NAME="GTSSURFACEINTER"
></A
>GtsSurfaceInter</H3
><PRE
CLASS="PROGRAMLISTING"
>typedef struct {
  GtsObject object;

  GtsSurface * s1;
  GtsSurface * s2;
  GSList * edges;
} GtsSurfaceInter;</PRE
><P
>The surface intersection object.</P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12335"><SPAN
STYLE="white-space: nowrap"
><A
HREF="gts-object-class.html#GTSOBJECT"
>GtsObject</A
>&nbsp;<CODE
CLASS="STRUCTFIELD"
>object</CODE
>;</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
>Parent object.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12341"><SPAN
STYLE="white-space: nowrap"
><A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
>&nbsp;*<CODE
CLASS="STRUCTFIELD"
>s1</CODE
>;</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
>Local triangulation of the intersecting faces of the first surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12347"><SPAN
STYLE="white-space: nowrap"
><A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
>&nbsp;*<CODE
CLASS="STRUCTFIELD"
>s2</CODE
>;</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
>Local triangulation of the intersecting faces of the second surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12353"><SPAN
STYLE="white-space: nowrap"
><GTKDOCLINK
HREF="GSLIST"
>GSList</GTKDOCLINK
>&nbsp;*<CODE
CLASS="STRUCTFIELD"
>edges</CODE
>;</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
>List of <A
HREF="gts-edges.html#GTSEDGE"
><SPAN
CLASS="TYPE"
>GtsEdge</SPAN
></A
> defining the 3D curve intersection of the two surfaces.&#13;</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12361"
></A
><H3
><A
NAME="GTS-SURFACE-INTERSECTION"
></A
>gts_surface_intersection ()</H3
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GSLIST"
>GSList</GTKDOCLINK
>*     gts_surface_intersection        (<A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s1,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s2,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree1,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree2);</PRE
><P
></P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12375"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>s1</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12382"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>s2</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12389"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>faces_tree1</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a bounding box tree (see <A
HREF="gts-bounding-boxes-trees.html#GTS-BB-TREE-NEW"
><CODE
CLASS="FUNCTION"
>gts_bb_tree_new()</CODE
></A
>) for
the faces of <CODE
CLASS="PARAMETER"
>s1</CODE
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12397"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>faces_tree2</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a bounding box tree for the faces of <CODE
CLASS="PARAMETER"
>s2</CODE
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12403"><SPAN
STYLE="white-space: nowrap"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Returns</I
></SPAN
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a list of <A
HREF="gts-edges.html#GTSEDGE"
><SPAN
CLASS="TYPE"
>GtsEdge</SPAN
></A
> defining the curve intersection of the
two surfaces.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12410"
></A
><H3
><A
NAME="GTS-SURFACE-INTER-CLASS"
></A
>gts_surface_inter_class ()</H3
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
>GtsSurfaceInterClass</A
>* gts_surface_inter_class
                                            (void);</PRE
><P
></P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12420"><SPAN
STYLE="white-space: nowrap"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Returns</I
></SPAN
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> the <A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
><SPAN
CLASS="TYPE"
>GtsSurfaceInterClass</SPAN
></A
>.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12427"
></A
><H3
><A
NAME="GTS-SURFACE-INTER-NEW"
></A
>gts_surface_inter_new ()</H3
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
>* gts_surface_inter_new      (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
>GtsSurfaceInterClass</A
> *klass,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s1,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s2,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree1,
                                             <GTKDOCLINK
HREF="GNODE"
>GNode</GTKDOCLINK
> *faces_tree2,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> is_open1,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> is_open2);</PRE
><P
>When triangulating the cut faces, the new faces inherit the
attributes of these original faces through their <GTKDOCLINK
HREF="ATTRIBUTES"
><CODE
CLASS="FUNCTION"
>attributes()</CODE
></GTKDOCLINK
>
method.</P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12446"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>klass</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-boolean-operations.html#GTSSURFACEINTERCLASS"
><SPAN
CLASS="TYPE"
>GtsSurfaceInterClass</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12453"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>s1</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12460"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>s2</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12467"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>faces_tree1</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a bounding box tree (see <A
HREF="gts-bounding-boxes-trees.html#GTS-BB-TREE-NEW"
><CODE
CLASS="FUNCTION"
>gts_bb_tree_new()</CODE
></A
>) for
the faces of <CODE
CLASS="PARAMETER"
>s1</CODE
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12475"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>faces_tree2</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a bounding box tree for the faces of <CODE
CLASS="PARAMETER"
>s2</CODE
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12481"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>is_open1</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> whether <CODE
CLASS="PARAMETER"
>s1</CODE
> is an "open" surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12487"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>is_open2</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> whether <CODE
CLASS="PARAMETER"
>s2</CODE
> is an "open" surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12493"><SPAN
STYLE="white-space: nowrap"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Returns</I
></SPAN
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a new <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
> describing the intersection of <CODE
CLASS="PARAMETER"
>s1</CODE
>
and <CODE
CLASS="PARAMETER"
>s2</CODE
>.  </P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12502"
></A
><H3
><A
NAME="GTS-SURFACE-INTER-CHECK"
></A
>gts_surface_inter_check ()</H3
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
>    gts_surface_inter_check         (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
> *si,
                                             <GTKDOCLINK
HREF="GBOOLEAN"
>gboolean</GTKDOCLINK
> *closed);</PRE
><P
></P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12514"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>si</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12521"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>closed</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> is set to <TT
CLASS="LITERAL"
>TRUE</TT
> if <CODE
CLASS="PARAMETER"
>si</CODE
>-&gt;edges is a closed curve, <TT
CLASS="LITERAL"
>FALSE</TT
>
otherwise.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12529"><SPAN
STYLE="white-space: nowrap"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Returns</I
></SPAN
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> <TT
CLASS="LITERAL"
>TRUE</TT
> if the curve described by <CODE
CLASS="PARAMETER"
>si</CODE
> is an orientable
manifold, <TT
CLASS="LITERAL"
>FALSE</TT
> otherwise.  </P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12537"
></A
><H3
><A
NAME="GTSBOOLEANOPERATION"
></A
>enum GtsBooleanOperation</H3
><PRE
CLASS="PROGRAMLISTING"
>typedef enum { GTS_1_OUT_2, 
	       GTS_1_IN_2, 
	       GTS_2_OUT_1, 
	       GTS_2_IN_1 }             GtsBooleanOperation;</PRE
><P
></P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12546"><SPAN
STYLE="white-space: nowrap"
><TT
CLASS="LITERAL"
>GTS_1_OUT_2</TT
></SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> identifies the part of the first surface which lies
outside the second surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12551"><SPAN
STYLE="white-space: nowrap"
><TT
CLASS="LITERAL"
>GTS_1_IN_2</TT
></SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> identifies the part of the first surface which lies
inside the second surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12556"><SPAN
STYLE="white-space: nowrap"
><TT
CLASS="LITERAL"
>GTS_2_OUT_1</TT
></SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> identifies the part of the second surface which lies
outside the first surface.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12561"><SPAN
STYLE="white-space: nowrap"
><TT
CLASS="LITERAL"
>GTS_2_IN_1</TT
></SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> identifies the part of the second surface which lies
inside the first surface.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12566"
></A
><H3
><A
NAME="GTS-SURFACE-INTER-BOOLEAN"
></A
>gts_surface_inter_boolean ()</H3
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="VOID"
>void</GTKDOCLINK
>        gts_surface_inter_boolean       (<A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
>GtsSurfaceInter</A
> *si,
                                             <A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *surface,
                                             <A
HREF="gts-boolean-operations.html#GTSBOOLEANOPERATION"
>GtsBooleanOperation</A
> op);</PRE
><P
>Adds to <CODE
CLASS="PARAMETER"
>surface</CODE
> the part of the surface described by <CODE
CLASS="PARAMETER"
>si</CODE
> and <CODE
CLASS="PARAMETER"
>op</CODE
>.</P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12582"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>si</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-boolean-operations.html#GTSSURFACEINTER"
><SPAN
CLASS="TYPE"
>GtsSurfaceInter</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12589"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>surface</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12596"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>op</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-boolean-operations.html#GTSBOOLEANOPERATION"
><SPAN
CLASS="TYPE"
>GtsBooleanOperation</SPAN
></A
>.</P
></TD
></TR
></TBODY
></TABLE
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12603"
></A
><H3
><A
NAME="GTS-SURFACE-IS-SELF-INTERSECTING"
></A
>gts_surface_is_self_intersecting ()</H3
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
>* gts_surface_is_self_intersecting
                                            (<A
HREF="gts-surfaces.html#GTSSURFACE"
>GtsSurface</A
> *s);</PRE
><P
></P
><P
></P
><P
></P
><TABLE
CLASS="variablelist"
BORDER="0"
CELLSPACING="0"
CELLPADDING="4"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12614"><SPAN
STYLE="white-space: nowrap"
><CODE
CLASS="PARAMETER"
>s</CODE
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
>.</P
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
NAME="AEN12621"><SPAN
STYLE="white-space: nowrap"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Returns</I
></SPAN
>&nbsp;:</SPAN
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> a new <A
HREF="gts-surfaces.html#GTSSURFACE"
><SPAN
CLASS="TYPE"
>GtsSurface</SPAN
></A
> containing the faces of <CODE
CLASS="PARAMETER"
>s</CODE
> which are
self-intersecting or <TT
CLASS="LITERAL"
>NULL</TT
> if no faces of <CODE
CLASS="PARAMETER"
>s</CODE
> are self-intersecting.</P
></TD
></TR
></TBODY
></TABLE
></DIV
></DIV
><TABLE
CLASS="navigation"
WIDTH="100%"
SUMMARY="Navigation footer"
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CELLSPACING="2"
><TR
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><TD
ALIGN="left"
><A
ACCESSKEY="p"
HREF="c12206.html"
><B
>&lt;&lt;&lt;&nbsp;Surface operations</B
></A
></TD
><TD
ALIGN="right"
><A
ACCESSKEY="n"
HREF="gts-surface-simplification-and-refinement.html"
><B
>Surface simplification and refinement&nbsp;&gt;&gt;&gt;</B
></A
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