Class ShaderAttributeArray


public class ShaderAttributeArray extends ShaderAttributeObject
The ShaderAttributeArray object encapsulates a uniform shader attribute whose value is specified explicitly. The shader variable attrName is explicitly set to the specified value during rendering. attrName must be the name of a valid uniform attribute in the shader in which it is used. Otherwise, the attribute name will be ignored and a runtime error may be generated. The value must be an array of one of the allowed classes. The allowed classes are: Integer[], Float[], Tuple{2,3,4}{i,f}[], Matrix{3,4}f[]. A ClassCastException will be thrown if a specified value object is not one of the allowed types. Further, the type and length of the value is immutable once a ShaderAttributeArray is constructed. Subsequent setValue operations must be called with an array of the same type and length as the one that was used to construct the ShaderAttributeArray. Finally, the type of the value object must match the type of the corresponding attrName variable in the shader in which it is used. Otherwise, the shader will not be able to use the attribute and a runtime error may be generated.
Since:
Java 3D 1.4
See Also:
  • Constructor Details

    • ShaderAttributeArray

      public ShaderAttributeArray(String attrName, Object value)
      Constructs a new ShaderAttributeArray object with the specified (attrName, value) pair. The specified value must be an array of one of the allowed class types. A deep copy of the array is stored.
      Parameters:
      attrName - the name of the shader attribute
      value - the value of the shader attribute
      Throws:
      NullPointerException - if attrName or value is null
      ClassCastException - if value is not an array of one of the allowed classes
  • Method Details

    • getValue

      public Object getValue()
      Description copied from class: ShaderAttributeObject
      Retrieves the value of this shader attribute. A copy of the object is returned.
      Specified by:
      getValue in class ShaderAttributeObject
      Returns:
      a copy of the value of this shader attribute
    • setValue

      public void setValue(Object value)
      Description copied from class: ShaderAttributeObject
      Sets the value of this shader attribute to the specified value. A copy of the object is stored.
      Specified by:
      setValue in class ShaderAttributeObject
      Parameters:
      value - the new value of the shader attribute
    • setValue

      public void setValue(int index, Object value)
      Sets the specified array element of the value of this shader attribute to the specified value. A copy of the object is stored.
      Parameters:
      value - the new value of the shader attribute
      Throws:
      NullPointerException - if value is null
      ClassCastException - if value is not an instance of the same base class as the individual elements of the array object used to construct this shader attribute object.
      CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph
    • length

      public int length()
      Returns the number of elements in the value array.
      Returns:
      the number of elements in the value array
      Throws:
      CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph