.TH "SoGeoOrigin" 3 "Fri Sep 6 2024 15:32:06" "Version 4.0.3" "Coin" \" -*- nroff -*- .ad l .nh .SH NAME SoGeoOrigin \- The \fBSoGeoOrigin\fP class is used to specify an absolute geographic location against which geometry is referenced\&. .SH SYNOPSIS .br .PP .PP \fR#include \fP .PP Inherits \fBSoNode\fP\&. .SS "Public Member Functions" .in +1c .ti -1c .RI "virtual \fBSoType\fP \fBgetTypeId\fP (void) const" .br .ti -1c .RI "\fBSoGeoOrigin\fP (void)" .br .ti -1c .RI "virtual void \fBdoAction\fP (\fBSoAction\fP *action)" .br .ti -1c .RI "virtual void \fBcallback\fP (\fBSoCallbackAction\fP *action)" .br .ti -1c .RI "virtual void \fBGLRender\fP (\fBSoGLRenderAction\fP *action)" .br .ti -1c .RI "virtual void \fBgetBoundingBox\fP (\fBSoGetBoundingBoxAction\fP *action)" .br .ti -1c .RI "virtual void \fBgetMatrix\fP (\fBSoGetMatrixAction\fP *action)" .br .ti -1c .RI "virtual void \fBpick\fP (\fBSoPickAction\fP *action)" .br .ti -1c .RI "virtual void \fBgetPrimitiveCount\fP (\fBSoGetPrimitiveCountAction\fP *action)" .br .in -1c Public Member Functions inherited from \fBSoNode\fP .in +1c .ti -1c .RI "void \fBsetOverride\fP (const SbBool state)" .br .ti -1c .RI "SbBool \fBisOverride\fP (void) const" .br .ti -1c .RI "void \fBsetNodeType\fP (const \fBNodeType\fP type)" .br .ti -1c .RI "\fBNodeType\fP \fBgetNodeType\fP (void) const" .br .ti -1c .RI "virtual \fBSoNode\fP * \fBcopy\fP (SbBool copyconnections=FALSE) const" .br .ti -1c .RI "virtual SbBool \fBaffectsState\fP (void) const" .br .ti -1c .RI "virtual void \fBGLRenderBelowPath\fP (\fBSoGLRenderAction\fP *action)" .br .ti -1c .RI "virtual void \fBGLRenderInPath\fP (\fBSoGLRenderAction\fP *action)" .br .ti -1c .RI "virtual void \fBGLRenderOffPath\fP (\fBSoGLRenderAction\fP *action)" .br .ti -1c .RI "virtual void \fBhandleEvent\fP (\fBSoHandleEventAction\fP *action)" .br .ti -1c .RI "virtual void \fBrayPick\fP (\fBSoRayPickAction\fP *action)" .br .ti -1c .RI "virtual void \fBsearch\fP (\fBSoSearchAction\fP *action)" .br .ti -1c .RI "virtual void \fBwrite\fP (\fBSoWriteAction\fP *action)" .br .ti -1c .RI "virtual void \fBaudioRender\fP (\fBSoAudioRenderAction\fP *action)" .br .ti -1c .RI "virtual void \fBgrabEventsSetup\fP (void)" .br .ti -1c .RI "virtual void \fBgrabEventsCleanup\fP (void)" .br .ti -1c .RI "virtual void \fBstartNotify\fP (void)" .br .ti -1c .RI "virtual void \fBnotify\fP (\fBSoNotList\fP *l)" .br .ti -1c .RI "SbUniqueId \fBgetNodeId\fP (void) const" .br .ti -1c .RI "virtual \fBSoChildList\fP * \fBgetChildren\fP (void) const" .br .ti -1c .RI "virtual void \fBwriteInstance\fP (\fBSoOutput\fP *out)" .br .ti -1c .RI "virtual \fBSoNode\fP * \fBaddToCopyDict\fP (void) const" .br .ti -1c .RI "virtual void \fBcopyContents\fP (const \fBSoFieldContainer\fP *from, SbBool copyconnections)" .br .ti -1c .RI "virtual \fBSoFieldContainer\fP * \fBcopyThroughConnection\fP (void) const" .br .in -1c Public Member Functions inherited from \fBSoFieldContainer\fP .in +1c .ti -1c .RI "void \fBsetToDefaults\fP (void)" .br .ti -1c .RI "SbBool \fBhasDefaultValues\fP (void) const" .br .ti -1c .RI "SbBool \fBfieldsAreEqual\fP (const \fBSoFieldContainer\fP *container) const" .br .ti -1c .RI "void \fBcopyFieldValues\fP (const \fBSoFieldContainer\fP *container, SbBool copyconnections=FALSE)" .br .ti -1c .RI "SbBool \fBset\fP (const char *const fielddata)" .br .ti -1c .RI "void \fBget\fP (\fBSbString\fP &fielddata)" .br .ti -1c .RI "virtual int \fBgetFields\fP (\fBSoFieldList\fP &l) const" .br .ti -1c .RI "virtual int \fBgetAllFields\fP (\fBSoFieldList\fP &l) const" .br .ti -1c .RI "virtual \fBSoField\fP * \fBgetField\fP (const \fBSbName\fP &name) const" .br .ti -1c .RI "virtual \fBSoField\fP * \fBgetEventIn\fP (const \fBSbName\fP &name) const" .br .ti -1c .RI "virtual \fBSoField\fP * \fBgetEventOut\fP (const \fBSbName\fP &name) const" .br .ti -1c .RI "SbBool \fBgetFieldName\fP (const \fBSoField\fP *const field, \fBSbName\fP &name) const" .br .ti -1c .RI "SbBool \fBenableNotify\fP (const SbBool flag)" .br .ti -1c .RI "SbBool \fBisNotifyEnabled\fP (void) const" .br .ti -1c .RI "SbBool \fBset\fP (const char *fielddata, \fBSoInput\fP *input)" .br .ti -1c .RI "void \fBget\fP (\fBSbString\fP &fielddata, \fBSoOutput\fP *out)" .br .ti -1c .RI "virtual SbBool \fBvalidateNewFieldValue\fP (\fBSoField\fP *field, void *newval)" .br .ti -1c .RI "virtual void \fBaddWriteReference\fP (\fBSoOutput\fP *out, SbBool isfromfield=FALSE)" .br .ti -1c .RI "SbBool \fBgetIsBuiltIn\fP (void) const" .br .ti -1c .RI "virtual void \fBgetFieldsMemorySize\fP (size_t &managed, size_t &unmanaged) const" .br .ti -1c .RI "void \fBsetUserData\fP (void *userdata) const" .br .ti -1c .RI "void * \fBgetUserData\fP (void) const" .br .in -1c Public Member Functions inherited from \fBSoBase\fP .in +1c .ti -1c .RI "void \fBref\fP (void) const" .br .ti -1c .RI "void \fBunref\fP (void) const" .br .ti -1c .RI "void \fBunrefNoDelete\fP (void) const" .br .ti -1c .RI "int32_t \fBgetRefCount\fP (void) const" .br .ti -1c .RI "void \fBtouch\fP (void)" .br .ti -1c .RI "SbBool \fBisOfType\fP (\fBSoType\fP type) const" .br .RI "Returns \fRTRUE\fP if the type of this object is either of the same type or inherited from \fItype\fP\&. " .ti -1c .RI "virtual \fBSbName\fP \fBgetName\fP (void) const" .br .ti -1c .RI "virtual void \fBsetName\fP (const \fBSbName\fP &newname)" .br .ti -1c .RI "void \fBaddAuditor\fP (void *const auditor, const \fBSoNotRec::Type\fP type)" .br .ti -1c .RI "void \fBremoveAuditor\fP (void *const auditor, const \fBSoNotRec::Type\fP type)" .br .ti -1c .RI "const \fBSoAuditorList\fP & \fBgetAuditors\fP (void) const" .br .ti -1c .RI "SbBool \fBshouldWrite\fP (void)" .br .ti -1c .RI "void \fBassertAlive\fP (void) const" .br .in -1c .SS "Static Public Member Functions" .in +1c .ti -1c .RI "static \fBSoType\fP \fBgetClassTypeId\fP (void)" .br .ti -1c .RI "static void \fBinitClass\fP (void)" .br .in -1c Static Public Member Functions inherited from \fBSoNode\fP .in +1c .ti -1c .RI "static uint32_t \fBgetCompatibilityTypes\fP (const \fBSoType\fP &nodetype)" .br .ti -1c .RI "static \fBSoType\fP \fBgetClassTypeId\fP (void)" .br .ti -1c .RI "static \fBSoNode\fP * \fBgetByName\fP (const \fBSbName\fP &name)" .br .ti -1c .RI "static int \fBgetByName\fP (const \fBSbName\fP &name, \fBSoNodeList\fP &l)" .br .ti -1c .RI "static void \fBinitClass\fP (void)" .br .RI "Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system\&. " .ti -1c .RI "static void \fBinitClasses\fP (void)" .br .ti -1c .RI "static SbUniqueId \fBgetNextNodeId\fP (void)" .br .ti -1c .RI "static int \fBgetActionMethodIndex\fP (const \fBSoType\fP type)" .br .ti -1c .RI "static void \fBgetBoundingBoxS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBGLRenderS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBcallbackS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBgetMatrixS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBhandleEventS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBpickS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBrayPickS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBsearchS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBwriteS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBaudioRenderS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .ti -1c .RI "static void \fBgetPrimitiveCountS\fP (\fBSoAction\fP *action, \fBSoNode\fP *node)" .br .in -1c Static Public Member Functions inherited from \fBSoFieldContainer\fP .in +1c .ti -1c .RI "static void \fBinitClass\fP (void)" .br .RI "Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system\&. " .ti -1c .RI "static \fBSoType\fP \fBgetClassTypeId\fP (void)" .br .RI "This static method returns the \fBSoType\fP object associated with objects of this class\&. " .ti -1c .RI "static void \fBcleanupClass\fP (void)" .br .ti -1c .RI "static void \fBinitCopyDict\fP (void)" .br .ti -1c .RI "static void \fBaddCopy\fP (const \fBSoFieldContainer\fP *orig, const \fBSoFieldContainer\fP *copy)" .br .ti -1c .RI "static \fBSoFieldContainer\fP * \fBcheckCopy\fP (const \fBSoFieldContainer\fP *orig)" .br .ti -1c .RI "static \fBSoFieldContainer\fP * \fBfindCopy\fP (const \fBSoFieldContainer\fP *orig, const SbBool copyconnections)" .br .ti -1c .RI "static void \fBcopyDone\fP (void)" .br .in -1c Static Public Member Functions inherited from \fBSoBase\fP .in +1c .ti -1c .RI "static void \fBinitClass\fP (void)" .br .RI "Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system\&. " .ti -1c .RI "static \fBSoType\fP \fBgetClassTypeId\fP (void)" .br .RI "This static method returns the \fBSoType\fP object associated with objects of this class\&. " .ti -1c .RI "static void \fBaddName\fP (\fBSoBase\fP *const base, const char *const name)" .br .ti -1c .RI "static void \fBremoveName\fP (\fBSoBase\fP *const base, const char *const name)" .br .ti -1c .RI "static void \fBincrementCurrentWriteCounter\fP (void)" .br .ti -1c .RI "static void \fBdecrementCurrentWriteCounter\fP (void)" .br .ti -1c .RI "static \fBSoBase\fP * \fBgetNamedBase\fP (const \fBSbName\fP &name, \fBSoType\fP type)" .br .ti -1c .RI "static int \fBgetNamedBases\fP (const \fBSbName\fP &name, \fBSoBaseList\fP &baselist, \fBSoType\fP type)" .br .ti -1c .RI "static SbBool \fBread\fP (\fBSoInput\fP *input, \fBSoBase\fP *&base, \fBSoType\fP expectedtype)" .br .ti -1c .RI "static void \fBsetInstancePrefix\fP (const \fBSbString\fP &c)" .br .ti -1c .RI "static void \fBsetTraceRefs\fP (SbBool trace)" .br .ti -1c .RI "static SbBool \fBgetTraceRefs\fP (void)" .br .ti -1c .RI "static SbBool \fBconnectRoute\fP (\fBSoInput\fP *input, const \fBSbName\fP &fromnodename, const \fBSbName\fP &fromfieldname, const \fBSbName\fP &tonodename, const \fBSbName\fP &tofieldname)" .br .ti -1c .RI "static SbBool \fBreadRoute\fP (\fBSoInput\fP *input)" .br .in -1c .SS "Public Attributes" .in +1c .ti -1c .RI "\fBSoSFVec3d\fP \fBgeoCoords\fP" .br .ti -1c .RI "\fBSoMFString\fP \fBgeoSystem\fP" .br .in -1c Public Attributes inherited from \fBSoBase\fP .SS "Protected Member Functions" .in +1c .ti -1c .RI "virtual const \fBSoFieldData\fP * \fBgetFieldData\fP (void) const" .br .ti -1c .RI "virtual \fB~SoGeoOrigin\fP ()" .br .in -1c Protected Member Functions inherited from \fBSoNode\fP .in +1c .ti -1c .RI "\fBSoNode\fP (void)" .br .ti -1c .RI "virtual \fB~SoNode\fP ()" .br .ti -1c .RI "virtual SbBool \fBreadInstance\fP (\fBSoInput\fP *in, unsigned short flags)" .br .in -1c Protected Member Functions inherited from \fBSoFieldContainer\fP .in +1c .ti -1c .RI "\fBSoFieldContainer\fP (void)" .br .ti -1c .RI "virtual \fB~SoFieldContainer\fP ()" .br .in -1c Protected Member Functions inherited from \fBSoBase\fP .in +1c .ti -1c .RI "\fBSoBase\fP (void)" .br .ti -1c .RI "virtual \fB~SoBase\fP ()" .br .ti -1c .RI "virtual void \fBdestroy\fP (void)" .br .ti -1c .RI "SbBool \fBhasMultipleWriteRefs\fP (void) const" .br .ti -1c .RI "SbBool \fBwriteHeader\fP (\fBSoOutput\fP *out, SbBool isgroup, SbBool isengine) const" .br .ti -1c .RI "void \fBwriteFooter\fP (\fBSoOutput\fP *out) const" .br .ti -1c .RI "virtual const char * \fBgetFileFormatName\fP (void) const" .br .ti -1c .RI "virtual \fBSoNotRec\fP \fBcreateNotRec\fP (void)" .br .in -1c .SS "Static Protected Member Functions" .in +1c .ti -1c .RI "static const \fBSoFieldData\fP ** \fBgetFieldDataPtr\fP (void)" .br .in -1c Static Protected Member Functions inherited from \fBSoNode\fP .in +1c .ti -1c .RI "static const \fBSoFieldData\fP ** \fBgetFieldDataPtr\fP (void)" .br .ti -1c .RI "static void \fBsetNextActionMethodIndex\fP (int index)" .br .ti -1c .RI "static int \fBgetNextActionMethodIndex\fP (void)" .br .ti -1c .RI "static void \fBincNextActionMethodIndex\fP (void)" .br .ti -1c .RI "static void \fBsetCompatibilityTypes\fP (const \fBSoType\fP &nodetype, const uint32_t bitmask)" .br .in -1c Static Protected Member Functions inherited from \fBSoBase\fP .in +1c .ti -1c .RI "static uint32_t \fBgetCurrentWriteCounter\fP (void)" .br .ti -1c .RI "static void \fBstaticDataLock\fP (void)" .br .ti -1c .RI "static void \fBstaticDataUnlock\fP (void)" .br .in -1c .SS "Additional Inherited Members" Public Types inherited from \fBSoNode\fP .in +1c .ti -1c .RI "enum \fBNodeType\fP { \fBINVENTOR\fP = 0x0000, \fBVRML1\fP = 0x0001, \fBVRML2\fP = 0x0002, \fBINVENTOR_1\fP = 0x0004, \fBINVENTOR_2_0\fP = 0x0008, \fBINVENTOR_2_1\fP = 0x0010, \fBINVENTOR_2_5\fP = 0x0020, \fBINVENTOR_2_6\fP = 0x0040, \fBCOIN_1_0\fP = 0x0080, \fBCOIN_2_0\fP = 0x0100, \fBEXTENSION\fP = 0x0200, \fBCOIN_2_2\fP = 0x0400, \fBCOIN_2_3\fP = 0x0800, \fBCOIN_2_4\fP = 0x1000, \fBINVENTOR_5_0\fP = 0x2000, \fBCOIN_2_5\fP = 0x4000, \fBCOIN_3_0\fP = 0x8000, \fBINVENTOR_6_0\fP = 0x10000, \fBCOIN_4_0\fP = 0x20000 }" .br .in -1c Protected Types inherited from \fBSoBase\fP .in +1c .ti -1c .RI "enum \fBBaseFlags\fP { \fBIS_ENGINE\fP = 0x01, \fBIS_GROUP\fP = 0x02 }" .br .in -1c Protected Attributes inherited from \fBSoNode\fP .in +1c .ti -1c .RI "SbUniqueId \fBuniqueId\fP" .br .in -1c Protected Attributes inherited from \fBSoFieldContainer\fP .in +1c .ti -1c .RI "SbBool \fBisBuiltIn\fP" .br .in -1c Static Protected Attributes inherited from \fBSoNode\fP .in +1c .ti -1c .RI "static SbUniqueId \fBnextUniqueId\fP = 1" .br .ti -1c .RI "static int \fBnextActionMethodIndex\fP = 0" .br .in -1c .SH "Detailed Description" .PP The \fBSoGeoOrigin\fP class is used to specify an absolute geographic location against which geometry is referenced\&. \fBFILE FORMAT/DEFAULTS:\fP .PP .nf GeoOrigin { geoSystem ["GD", "WE"] geoCoords 0 0 0 } .fi .PP .PP A common problem when dealing with geographic data is the reduced floating point precision you often get\&. UTM coordinates are often in the 10^5 a 10^6 magnitude, and this leaves very little precision for details at that position\&. .PP The \fBSoGeo\fP nodes are therefore useful when you want to keep your data in its original system, but still get good floating point precision when rendering\&. .PP Coin needs a local Cartesian coordinate system when rendering\&. When a \fBSoGeoOrigin\fP node is used, Coin will create a coordinate system at the \fBSoGeoOrigin\fP position, and all geometry (and the camera) in the scene graph will be projected into that coordinate system\&. .PP The coordinate system will always have the Z-axis point up from the ground\&. The Y-axis will point towards the north pole, and the X-axis is found using the right hand rule\&. .PP A scene graph should only contain one GeoOrigin node, and all geometry in the scene graph will, as stated earlier, be rendered relative to this position\&. This means that the precision will be best if the GeoOrigin position is as close to actual camera position as possible\&. If you move around on a large area, it might therefore be a good idea too actually move the GeoOrigin position instead of the camera\&. .PP To place geometry in the scene graph, you can either use an \fBSoGeoSeparator\fP node or an \fBSoGeoCoordinate\fP node\&. When using a GeoSeparator node, all geometry inside that separator will be rendered relative to its geo-system position and orientation, and you then use regular shapes and regular \fBSoCoordinate3\fP nodes to specify data (the points in an \fBSoCoordinate3\fP must be adjusted to be relative to the GeoSeparator position)\&. .PP The \fBSoGeoCoordinate\fP node on the other hand can contain double precision geo-coordinates, and that node will internally recalculate the double precision array to a single precision array which is relative to the SoGeoOrgin node\&. .PP One note regarding UTM projections: Since it is quite common to assume a flat earth when working with UTM data, it is possible to supply a 'FLAT' keyword for UTM coordinate systems: .PP .PP .nf GeoOrigin { geoSystem [ "UTM", "Z17", "FLAT" ] geoCoords 846889 4313850 0 } .fi .PP .PP Example scene graph: .PP .PP .nf GeoOrigin { geoSystem "GD" geoCoords 40\&.77 \-73\&.97 0 } GeoSeparator { # New York, NY geoSystem "GD" geoCoords 40\&.67 \-73\&.94 0 BaseColor { rgb 0 1 0 } Cube { width 25000 height 25000 depth 25000 } Translation { translation 0 0 30000 } Text2 { string "New York" } } GeoSeparator { # Los Angeles, CA geoSystem "GD" geoCoords 34\&.11 \-118\&.4 0 BaseColor { rgb 1 0 0 } Cube { width 25000 height 25000 depth 25000 } Translation { translation 0 0 30000 } Text2 { string "Los Angeles" } } GeoSeparator { # Washington, DC geoSystem [ "UTM", "Z17" ] geoCoords 846889 4313850 0 BaseColor { rgb 0 1 1 } Cube { width 25000 height 25000 depth 25000 } Translation { translation 0 0 30000 } Text2 { string "Washington" } } # add a small geogrid GeoCoordinate { geoSystem "GD" point [ 32 \-120 0, 32 \-110 0, 32 \-100 0, 32 \-90 0, 32 \-80 0, 32 \-70 0, 34 \-120 0, 34 \-110 0, 34 \-100 0, 34 \-90 0, 34 \-80 0, 34 \-70 0, 36 \-120 0, 36 \-110 0, 36 \-100 0, 36 \-90 0, 36 \-80 0, 36 \-70 0, 38 \-120 0, 38 \-110 0, 38 \-100 0, 38 \-90 0, 38 \-80 0, 38 \-70 0, 40 \-120 0, 40 \-110 0, 40 \-100 0, 40 \-90 0, 40 \-80 0, 40 \-70 0 42 \-120 0, 42 \-110 0, 42 \-100 0, 42 \-90 0, 42 \-80 0, 42 \-70 0 ] } DrawStyle { style LINES } BaseColor {} ShapeHints { vertexOrdering COUNTERCLOCKWISE } QuadMesh { verticesPerRow 6 verticesPerColumn 6 } .fi .PP .PP \fBSince\fP .RS 4 Coin 2\&.5 .br .RE .PP .SH "Constructor & Destructor Documentation" .PP .SS "SoGeoOrigin::SoGeoOrigin (void )" Constructor\&. .SS "SoGeoOrigin::~SoGeoOrigin ()\fR [protected]\fP, \fR [virtual]\fP" Destructor\&. .SH "Member Function Documentation" .PP .SS "\fBSoType\fP SoGeoOrigin::getClassTypeId (void )\fR [static]\fP" This static method returns the \fBSoType\fP object associated with objects of this class\&. .br .SS "\fBSoType\fP SoGeoOrigin::getTypeId (void ) const\fR [virtual]\fP" Returns the type identification of an object derived from a class inheriting \fBSoBase\fP\&. This is used for runtime type checking and 'downward' casting\&. .br .PP Implements \fBSoBase\fP\&. .SS "const \fBSoFieldData\fP ** SoGeoOrigin::getFieldDataPtr (void )\fR [static]\fP, \fR [protected]\fP" \fIThis API member is considered internal to the library, as it is not likely to be of interest to the application programmer\&.\fP .br .br Returns the \fBSoFieldData\fP class which holds information about fields in this node\&. .br .SS "const \fBSoFieldData\fP * SoGeoOrigin::getFieldData (void ) const\fR [protected]\fP, \fR [virtual]\fP" Returns a pointer to the class-wide field data storage object for this instance\&. If no fields are present, returns \fRNULL\fP\&. .PP Reimplemented from \fBSoFieldContainer\fP\&. .SS "void SoGeoOrigin::initClass (void )\fR [static]\fP" .SS "void SoGeoOrigin::doAction (\fBSoAction\fP * action)\fR [virtual]\fP" This function performs the typical operation of a node for any action\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::callback (\fBSoCallbackAction\fP * action)\fR [virtual]\fP" Action method for \fBSoCallbackAction\fP\&. .PP Simply updates the state according to how the node behaves for the render action, so the application programmer can use the \fBSoCallbackAction\fP for extracting information about the scene graph\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::GLRender (\fBSoGLRenderAction\fP * action)\fR [virtual]\fP" Action method for the \fBSoGLRenderAction\fP\&. .PP This is called during rendering traversals\&. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::getBoundingBox (\fBSoGetBoundingBoxAction\fP * action)\fR [virtual]\fP" Action method for the \fBSoGetBoundingBoxAction\fP\&. .PP Calculates bounding box and center coordinates for node and modifies the values of the \fIaction\fP to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node\&. .PP Nodes influencing how geometry nodes calculate their bounding box also override this method to change the relevant state variables\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::getMatrix (\fBSoGetMatrixAction\fP * action)\fR [virtual]\fP" Action method for \fBSoGetMatrixAction\fP\&. .PP Updates \fIaction\fP by accumulating with the transformation matrix of this node (if any)\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::pick (\fBSoPickAction\fP * action)\fR [virtual]\fP" Action method for \fBSoPickAction\fP\&. .PP Does common processing for \fBSoPickAction\fP \fIaction\fP instances\&. .PP Reimplemented from \fBSoNode\fP\&. .SS "void SoGeoOrigin::getPrimitiveCount (\fBSoGetPrimitiveCountAction\fP * action)\fR [virtual]\fP" Action method for the \fBSoGetPrimitiveCountAction\fP\&. .PP Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the \fIaction\fP\&. .PP Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables\&. .PP Reimplemented from \fBSoNode\fP\&. .SH "Member Data Documentation" .PP .SS "\fBSoSFVec3d\fP SoGeoOrigin::geoCoords" Used for specifying the geographic coordinates\&. For the GD system this should be \&. For UTM it is , and for GC it is simply \&. .SS "\fBSoMFString\fP SoGeoOrigin::geoSystem" Used to specify a spatial reference frame\&. Coin currently supports three different systems\&. Support for more systems might be added in the future\&. .PP .PD 0 .IP "\(bu" 1 'GD' - The Geodetic system (latitude/longitude)\&. .br .PP .PD 0 .IP "\(bu" 1 'UTM' - Universal Transverse Mercator coordinate system\&. The second string should be the zone, encoded as 'Z'\&. .PP .PD 0 .IP "\(bu" 1 'GC' - Earth-fixed Geocentric with respect to the WGS84 ellipsoid\&. .PP The 'GD' and 'UTM' systems can, for future support, have an ellipsoid specification\&. The default is 'WE' which is the WGS84 ellipsoid, the only ellipsoid currently supported in Coin\&. .SH "Author" .PP Generated automatically by Doxygen for Coin from the source code\&.