Package com.openinventor.inventor.fields

Class SoMFVec3f

  • public class SoMFVec3f
extends SoMField
    Multiple-value field containing any number of three-dimensional vectors. A multiple-value field that contains any number of three-dimensional vectors.

    SoMFVec3fs are written to file as one or more triples of floating point values separated by whitespace.

    When more than one value is present, all of the values are enclosed in square brackets and separated by commas; for example: 

       [ 0 0 0, 1.2 3.4 5.6, 98.6 -4e1 212 ]

    Using the setValues() method:

    Note: If you use the setValues() method to set a larger number of values than the field currently contains, Open Inventor will automatically allocate more memory. The total number of values in the field is increased as expected. However the converse is not true. If you use setValues() to set a smaller number of values than the field currently contains, you are simply overriding some of the values in the field. The total number of values in the field does not change. If you want to replace the current contents of the field with a smaller number of values, first call setNum( 0 ), then call setValues().

    Using an Application-Supplied Array

    The setValuesBuffer() methods allow Open Inventor to directly use an array of values supplied by the application. The application data is not copied.

    When using application data directly the values may be modified by changing the application memory and calling touch() to notify Open Inventor of the change. The values may also be modified using the usual methods (set1Value(), etc.)

    However, note that some methods (setNum(), deleteValues(), insertSpace(), setValues(), set1Value(), setValue()) may force Open Inventor to allocate a larger block of memory to hold all the values. In this case, Open Inventor will allocate memory internally and copy the data. Modifying values in the application memory will not affect the field if Open Inventor has allocated new memory.

    Example: 

     // Allocate memory for vertices
 int numBytes = NUM_VERTICES * 4; 
 ByteBuffer vertexBuffer = ByteBuffer.allocateDirect( numBytes );
 vertexBuffer.order( ByteOrder.nativeOrder() );
 FloatBuffer vertexFBuffer = vertexBuffer.asFloatBuffer();
 
 // Assign values to the vertices (application-specific code)
 // . . .
 
 // Set the field's value to vertices in application memory
 SoVertexProperty vertexProperty = new SoVertexProperty();
 vertexProperty.vertex.setValuesBuffer( vertexBuffer );
          
 // Change application data and notify Open Inventor
 vertexFBuffer.put( 4, 2.0f );
 vertexProperty.vertex.touch();

    • Method Detail

      • setValues

        public void setValues​(int start,
                      float[][] xyz)
        Sets values starting at index start to the vectors defined by xyz array. The private array will automatically be made larger to accommodate the new values, if necessary.
        Parameters:
        xyz - array of arrays of 3 floats

      • setValues

        public void setValues​(int start,
                      int num,
                      float[] xyz)
        Deprecated.
        As of Open Inventor 9.3.1, use setValues(int, float[]) instead.
        Sets values from array of arrays of 3 floats.

      • find

        public int find​(SbVec3f targetValue)
        Calls find(targetValue, false).

      • getDirectValues

        public java.nio.FloatBuffer getDirectValues​(int start)
        Returns a pointer into the array of values in the field, starting at index start. The values are read-only. See the startEditing()/finishEditing() methods for a way of modifying values in place.

      • setValues

        public void setValues​(int start,
                      SbVec3f[] newValues)
        Sets num values starting at index start to the values. in newValues. The array will automatically be made larger to accommodate the new values, if necessary. In that case, if field's values are stored in an user data array, this array is no more used.

      • find

        public int find​(SbVec3f targetValue,
                boolean addIfNotFound)
        Finds the given targetValue in the array and returns the index of that value. in the array. If the value is not found, -1 is returned. If addIfNotFound is set, then targetValue is added to the end of the array (but -1 is still returned).

      • getValues

        public SbVec3f[] getValues​(int start)
        Returns a pointer into the array of values in the field, starting at index start. The values are read-only. See the startEditing()/finishEditing() methods for a way of modifying values in place.

      • getValueAt

        public SbVec3f getValueAt​(int i)

      • set1Value

        public void set1Value​(int index,
                      float[] xyz)
        Sets one value from 3 floats in array.

      • setValue

        public void setValue​(float x,
                     float y,
                     float z)
        Sets to one value from 3 floats.

      • finishEditing

        public void finishEditing()
        Indicates that batch edits have finished. See startEditing().

      • startEditing

        public java.nio.FloatBuffer startEditing()
        Returns a pointer to the internally maintained array that can be modified. The values in the array may be changed, but values cannot be added or removed. It is illegal to call any other editing methods between startEditing() and finishEditing() (e.g. set1Value(), setValue(), etc.). Fields, engines or sensors connected to this field and sensors are not notified that this field has changed until finishEditing() is called. Calling finishEditing() always sets the isDefault() flag to false and informs engines and sensors that the field changed, even if none of the values actually were changed.

      • set1Value

        public void set1Value​(int index,
                      SbVec3f newValue)
        Sets the index'th value in the array to newValue. The array will be automatically expanded, if necessary. In that case, if field's values are stored in an user data array, this array is no more used.

      • setValuesBuffer

        public void setValuesBuffer​(java.nio.ByteBuffer userData)
        Sets the field to contain the values stored in userData. This data will not be copied into the field: it will be directly used by the field.

      • setValues

        public void setValues​(int start,
                      float[] xyz)
        Sets values from the specified array of floats. The size of the array must be a multiple of 3.

      • setValue

        public void setValue​(SbVec3d vec3d)
        Sets to one value from double precision vector.

      • setValues

        public void setValues​(int start,
                      SbVec3d[] vec3d)
        Sets values from array of double precision vectors.

      • set1Value

        public void set1Value​(int index,
                      SbVec3d vec3d)
        Sets one value from double precision vector.

      • set1Value

        public void set1Value​(int index,
                      float x,
                      float y,
                      float z)
        Sets one value from 3 floats.

      • setValue

        public void setValue​(SbVec3f newValue)
        Sets the first value in the array to newValue, and deletes. the second and subsequent values. If field's values are stored in an user data array, this array is no more used.

      • equals

        public boolean equals​(java.lang.Object obj)
        Overrides:
        equals in class SoField

      • disableDeleteValues

        public void disableDeleteValues()
        Temporary disable value deleting.

      • setValue

        public void setValue​(float[] xyz)
        Sets to one value from 3 floats in array.