#include <Inventor/engines/SoSelectOne.h>
Public Member Functions | |
SoSelectOne (SoType inputtype) | |
Static Public Member Functions | |
static void | initClass (void) |
Public Attributes | |
SoSFInt32 | index |
SoMField * | input |
SoEngineOutput * | output |
Friends | |
class | dummy |
The output field will be the index'th value of the input multivalue field.
Note that this engine's output field deviates a little from the "standard" output mechanism of the majority of engine classes: the SoSelectOne::output is not a permanent SoEngineOutput instance, but a pointer to a SoEngineOutput instance. The reason for this is that it is necessary to allocate the output field dynamically to make it match what the SoSelectOne::input is connected to since the type of the SoSelectOne::output always should be the same as the type of the SoSelectOne::input.
The file format for this field is a bit special. Note the leading "type" specification, which is not necessary for most other field types:
SelectOne { type <multivaluefieldtype> [...fields...] }
SoSelectOne::SoSelectOne | ( | SoType | inputtype | ) |
Constructor. Sets the type of the input field. The input field must be of type SoMField.
void SoSelectOne::initClass | ( | void | ) | [static] |
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
Reimplemented from SoEngine.
Index of the value from the input field which will be put on the output.
The multivalue input field which we will select a single value from for our output.
(SoSField) This is the singlevalue field output containing the index'th value of SoSelectOne::input.
The type of the field will of course match the type of the input field, i.e. if SoSelectOne::input is an SoMFFloat, SoSelectOne::output will be an SoSFFloat etc.