Class SoCpuBufferCompressed

  • All Implemented Interfaces:
    SafeDisposable

    public class SoCpuBufferCompressed
    extends SoCpuBufferObject
    LDM buffer object optimized for compressed tile data. This type of buffer efficiently represents a tile containing compressed data (usually read from a compressed LDM file). The buffer can be used like any other buffer, but uses much less memory when its contents are not actually being accessed.

    SoBufferPropertiesInterface

    See Also:
    SoCpuBufferObject
    • Constructor Detail

      • SoCpuBufferCompressed

        public SoCpuBufferCompressed()
        Default constructor.
      • SoCpuBufferCompressed

        public SoCpuBufferCompressed​(SoDataCompressor compressor)
        Constructor with compressor given as parameter.
    • Method Detail

      • unmap

        public void unmap​(SoGLBufferObject bufferObject)
        Unmap the specified GL buffer object
        It is defined just to speed up the call when the type of the object is known.
        If the access mode supports writing the specified buffer is sync'd with the buffer.

        See the general unmap function for more information.

        Parameters:
        bufferObject - Buffer to be unmapped.
      • map

        public void map​(SoCpuBufferObject targetBufferObject,
                        SoBufferObject.AccessModes accessMode,
                        long startPosition,
                        long mappingSize)
        Map the current buffer object into the specified CPU buffer object.

        See the general map method for more information.

      • map

        public void map​(SoGLBufferObject targetBufferObject,
                        SoBufferObject.AccessModes accessMode,
                        long startPosition,
                        long mappingSize)
        Map the current buffer object into the specified GL buffer object.

        See the general map method for more information.

      • getMinMax

        public double[] getMinMax()
        Get the min and max values in the buffer, if they are known.
        Returns false if these values have not been set or computed. Returns true if values are available.

        Parameters:
        min - user variable to store min value

        max - user variable to store max value
      • unmap

        public void unmap​(SoCpuBufferObject bufferObject)
        Unmap the specified CPU buffer object
        It is defined just to speed up the call when the type of the object is known.
        Remove the specified bufferObject from the list of buffers which map the current buffer.

        See the general unmap function for more information.

      • getRealSize

        public long getRealSize()
        Returns the size of the uncompressed data in bytes.
      • setMinMax

        public void setMinMax​(double min,
                              double max)
        Set the min and max values for this buffer.

        Parameters:
        min - user variable containing min value

        max - user variable containing max value
      • setCompressor

        public void setCompressor​(SoDataCompressor compressor)
        Set the compressor used to decompress buffer.

        Parameters:
        compressor - Pointer to the compressor to use