Coordinate projection node More...
#include <Inventor/nodes/SoProjection.h>
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoProjection () | |
Constructor. | |
void | addProjection (SbString &projectionName, SbProjection *projection, int id) |
Add a projection with the given name and id to the list. | |
void | setProjection (SbProjection *projection) |
Set the current projection. | |
void | getCurrentProjectionInfos (SbString &name, int &id) |
Return current projection name and id. | |
SbProjection * | getProjection () const |
Return current projection. | |
Public Member Functions inherited from SoNode | |
virtual void | setOverride (const SbBool state) |
Turns the override flag on or off. | |
virtual SbBool | isOverride () const |
Returns the state of the override flag. | |
virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
Creates and returns an exact copy of the node. | |
virtual SbBool | affectsState () const |
Returns TRUE if a node has an effect on the state during traversal. | |
virtual void | touch () |
Marks an instance as modified, simulating a change to it. | |
Public Member Functions inherited from SoFieldContainer | |
void | setToDefaults () |
Sets all fields in this object to their default values. | |
SbBool | hasDefaultValues () const |
Returns TRUE if all of the object's fields have their default values. | |
SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
Returns TRUE if this object's fields are exactly equal to fc's fields. | |
void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
Copies the contents of fc's fields into this object's fields. | |
SoNONUNICODE SbBool | set (const char *fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
SbBool | set (const SbString &fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
void | get (SbString &fieldDataString) |
Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
virtual int | getFields (SoFieldList &list) const |
Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
virtual int | getAllFields (SoFieldList &list) const |
Returns a list of fields, including the eventIn's and eventOut's. | |
virtual SoField * | getField (const SbName &fieldName) const |
Returns a the field of this object whose name is fieldName. | |
virtual SoField * | getEventIn (const SbName &fieldName) const |
Returns a the eventIn with the given name. | |
virtual SoField * | getEventOut (const SbName &fieldName) const |
Returns the eventOut with the given name. | |
SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
Returns the name of the given field in the fieldName argument. | |
SbBool | enableNotify (SbBool flag) |
Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
SbBool | isNotifyEnabled () const |
Notification is the process of telling interested objects that this object has changed. | |
virtual void | setUserData (void *data) |
Sets application data. | |
void * | getUserData (void) const |
Gets user application data. | |
Public Member Functions inherited from SoBase | |
virtual SbName | getName () const |
Returns the name of an instance. | |
virtual void | setName (const SbName &name) |
Sets the name of an instance. | |
void | setSynchronizable (const bool b) |
Sets this to be a ScaleViz synchronizable object. | |
bool | isSynchronizable () const |
Gets the ScaleViz synchronizable state of this object. | |
Public Member Functions inherited from SoRefCounter | |
void | ref () const |
Adds a reference to an instance. | |
void | unref () const |
Removes a reference from an instance. | |
void | unrefNoDelete () const |
unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
int | getRefCount () const |
Returns current reference count. | |
void | lock () const |
lock this instance. | |
void | unlock () const |
unlock this instance. | |
Public Member Functions inherited from SoTypedObject | |
SbBool | isOfType (const SoType &type) const |
Returns TRUE if this object is of the type specified in type or is derived from that type. | |
template<typename TypedObjectClass > | |
SbBool | isOfType () const |
Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static SbVec3f * | checkProjection (SoState *state, SoNode *node, int32_t numCoords, const SbVec3f *coords) |
Apply projection to given coordinates. | |
Static Public Member Functions inherited from SoNode | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static SoNode * | getByName (const SbName &name) |
A node's name can be set using SoBase::setName(). | |
static int | getByName (const SbName &name, SoNodeList &list) |
A node's name can be set using SoBase::setName(). | |
Static Public Member Functions inherited from SoFieldContainer | |
static SoType | getClassTypeId () |
Returns the type of this class. | |
Static Public Member Functions inherited from SoBase | |
static SoType | getClassTypeId () |
Returns type identifier for this class. | |
Static Public Member Functions inherited from SoTypedObject | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Public Attributes | |
SoSFBool | isOn |
If set to FALSE, projection is inactive. | |
SoSFMatrix | matrix |
Matrix that can be applied before projecting a point. | |
SoSFInt32 | projTypeId |
Current projection id. | |
SoMFFloat | floatParameters |
Float parameters stored for projections. | |
SoMFString | parameters |
String parameters stored for projections. | |
SoMFString | parametersIn |
String parameters stored for projections. | |
This property node defines a coordinate projection that will be applied to all subsequent shapes in the scene graph. Coordinate transform nodes like SoTransform can only apply transforms that can be expressed as a matrix. A coordinate projection can be any algorithm that takes a coordinate and returns a different coordinate. This is particularly useful for geospatial coordinate systems (see SoGeoProjection), but is also useful for using spherical, cylindrical and other coordinate systems directly.
This node works together with projection classes derived from the SbProjection class. The projection classes implement the projection computations applied to 3D points. Applications can create new subclasses of SbProjection.
To use a specific projection, call setProjection() with an instance of the SbProjection class. Each instance of SoProjection can also store a list of projections, each one associated with a unique id. This is convenient for switching between different geospatial projections. Changing the projTypeId value activates the projection registered with the corresponding id.
The default projection is spherical coordinates (SbSphericalProjection).
The projection classes will use the string parameters and float parameters in the fields parameters and floatParameters respectively. See the projection class documentation for relevant parameters.
Normal vectors
LIMITATIONS
parameters | "" |
matrix | identity |
isOn | true |
floatParameters | 1 |
projTypeId | 0 |
SbProjection, SbSphericalProjection, SoGeoProjection
Definition at line 142 of file SoProjection.h.
SoProjection::SoProjection | ( | ) |
Constructor.
void SoProjection::addProjection | ( | SbString & | projectionName, |
SbProjection * | projection, | ||
int | id | ||
) |
Add a projection with the given name and id to the list.
The projection name is just for convenience. The projection id value should be greater than zero because the default spherical projection already uses this id. If multiple projections are assigned the same id, the first one added to the list will be used.
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static |
Apply projection to given coordinates.
Store projected coordinates in current SoCoordinate3 element.
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static |
Returns the type identifier for this class.
void SoProjection::getCurrentProjectionInfos | ( | SbString & | name, |
int & | id | ||
) |
Return current projection name and id.
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inline |
Return current projection.
Definition at line 209 of file SoProjection.h.
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virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoNode.
Reimplemented in SoGeoProjection, and SoTransformProjection.
void SoProjection::setProjection | ( | SbProjection * | projection | ) |
Set the current projection.
The specified projection is used regardless of whether it is in the list. In this case the value of the projTypeId field is not used.
SoMFFloat SoProjection::floatParameters |
Float parameters stored for projections.
Definition at line 173 of file SoProjection.h.
SoSFBool SoProjection::isOn |
If set to FALSE, projection is inactive.
Default is TRUE.
Definition at line 157 of file SoProjection.h.
SoSFMatrix SoProjection::matrix |
Matrix that can be applied before projecting a point.
Set to Identity by default
Definition at line 162 of file SoProjection.h.
SoMFString SoProjection::parameters |
String parameters stored for projections.
Definition at line 178 of file SoProjection.h.
SoMFString SoProjection::parametersIn |
String parameters stored for projections.
Definition at line 183 of file SoProjection.h.
SoSFInt32 SoProjection::projTypeId |