Package gov.nasa.worldwind.util

Class ClippingTessellator

  • public class ClippingTessellator
extends java.lang.Object
    ClippingTessellator

    • Constructor Summary

      Constructors 
      Constructor Description
      ClippingTessellator​(com.jogamp.opengl.glu.GLUtessellator tessellator, Sector sector)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addVertex​(double degreesLatitude, double degreesLongitude)  
      void beginContour()  
      protected int clipCode​(double degreesLatitude, double degreesLongitude)
      Computes a 4-bit code indicating the vertex's location in the 9 cell grid defined by the clip coordinates and the eight adjacent spaces defined by extending the min/max boundaries to infinity.0 indicates that the vertex is inside the clip coordinates.
      protected void doAddVertex​(double degreesLatitude, double degreesLongitude)  
      void endContour()  

      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • tessellator

        protected com.jogamp.opengl.glu.GLUtessellator tessellator

      • clipDegrees

        protected double[] clipDegrees

      • prevCoord

        protected double[] prevCoord

      • prevClipCode

        protected int prevClipCode

    • Constructor Detail

      • ClippingTessellator

        public ClippingTessellator​(com.jogamp.opengl.glu.GLUtessellator tessellator,
                           Sector sector)

    • Method Detail

      • beginContour

        public void beginContour()

      • endContour

        public void endContour()

      • addVertex

        public void addVertex​(double degreesLatitude,
                      double degreesLongitude)

      • doAddVertex

        protected void doAddVertex​(double degreesLatitude,
                           double degreesLongitude)

      • clipCode

        protected int clipCode​(double degreesLatitude,
                       double degreesLongitude)
        Computes a 4-bit code indicating the vertex's location in the 9 cell grid defined by the clip coordinates and the eight adjacent spaces defined by extending the min/max boundaries to infinity.0 indicates that the vertex is inside the clip coordinates.
        Parameters:
        degreesLatitude - The latitude for computation.
        degreesLongitude - The longitude for computation.
        Returns:
        The vertex location code.