Class PointAttributes


  • public class PointAttributes
    extends NodeComponent
    The PointAttributes object defines all attributes that apply to point primitives. The point attributes that can be defined are:

    • Size - the size of the point, in pixels. The default is a point size of one pixel.
    • Antialiasing - for points greater than one-pixel in size, antialiasing smooths the outline of the point when it is rendered.
    If antialiasing is disabled (the default), fractional point sizes are rounded to integer sizes, and a screen-aligned square region of pixels is drawn.

    If antialiasing is enabled, the points are considered transparent for rendering purposes. They are rendered with all the other transparent objects and adhere to the other transparency settings such as the View transparency sorting policy and the View depth buffer freeze transparent enable.

    See Also:
    Appearance, View
    • Field Detail

      • ALLOW_SIZE_READ

        public static final int ALLOW_SIZE_READ
        Specifies that this PointAttributes object allows reading its point size information.
        See Also:
        Constant Field Values
      • ALLOW_SIZE_WRITE

        public static final int ALLOW_SIZE_WRITE
        Specifies that this PointAttributes object allows writing its point size information.
        See Also:
        Constant Field Values
      • ALLOW_ANTIALIASING_READ

        public static final int ALLOW_ANTIALIASING_READ
        Specifies that this PointAttributes object allows reading its point antialiasing flag.
        See Also:
        Constant Field Values
      • ALLOW_ANTIALIASING_WRITE

        public static final int ALLOW_ANTIALIASING_WRITE
        Specifies that this PointAttributes object allows writing its point antialiasing flag.
        See Also:
        Constant Field Values
    • Constructor Detail

      • PointAttributes

        public PointAttributes()
        Constructs a PointAttributes object with default parameters. The default values are as follows:
          point size : 1
          point antialiasing : false
      • PointAttributes

        public PointAttributes​(float pointSize,
                               boolean pointAntialiasing)
        Constructs a PointAttributes object with specified values.
        Parameters:
        pointSize - the size of points, in pixels
        pointAntialiasing - flag to set point antialising ON or OFF
    • Method Detail

      • setPointSize

        public void setPointSize​(float pointSize)
        Sets the point size for this appearance component object.
        Parameters:
        pointSize - the size, in pixels, of point primitives
        Throws:
        CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph
      • getPointSize

        public float getPointSize()
        Gets the point size for this appearance component object.
        Returns:
        the size, in pixels, of point primitives
        Throws:
        CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph
      • setPointAntialiasingEnable

        public void setPointAntialiasingEnable​(boolean state)
        Enables or disables point antialiasing for this appearance component object.

        If antialiasing is enabled, the points are considered transparent for rendering purposes. They are rendered with all the other transparent objects and adhere to the other transparency settings such as the View transparency sorting policy and the View depth buffer freeze transparent enable.

        Parameters:
        state - true or false to enable or disable point antialiasing
        Throws:
        CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph
        See Also:
        View
      • getPointAntialiasingEnable

        public boolean getPointAntialiasingEnable()
        Retrieves the state of the point antialiasing flag.
        Returns:
        true if point antialiasing is enabled, false if point antialiasing is disabled
        Throws:
        CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph