Class LimitAngle

java.lang.Object
org.hipparchus.geometry.spherical.oned.LimitAngle
All Implemented Interfaces:
Hyperplane<Sphere1D>

public class LimitAngle extends Object implements Hyperplane<Sphere1D>
This class represents a 1D oriented hyperplane on the circle.

An hyperplane on the 1-sphere is an angle with an orientation.

Instances of this class are guaranteed to be immutable.

  • Constructor Details

  • Method Details

    • copySelf

      public LimitAngle copySelf()
      Copy the instance.

      Since instances are immutable, this method directly returns the instance.

      Specified by:
      copySelf in interface Hyperplane<Sphere1D>
      Returns:
      the instance itself
    • getOffset

      public double getOffset(Point<Sphere1D> point)
      Get the offset (oriented distance) of a point.

      The offset is 0 if the point is on the underlying hyperplane, it is positive if the point is on one particular side of the hyperplane, and it is negative if the point is on the other side, according to the hyperplane natural orientation.

      Specified by:
      getOffset in interface Hyperplane<Sphere1D>
      Parameters:
      point - point to check
      Returns:
      offset of the point
    • isDirect

      public boolean isDirect()
      Check if the hyperplane orientation is direct.
      Returns:
      true if the plus side of the hyperplane is towards angles greater than hyperplane location
    • getReverse

      public LimitAngle getReverse()
      Get the reverse of the instance.

      Get a limit angle with reversed orientation with respect to the instance. A new object is built, the instance is untouched.

      Returns:
      a new limit angle, with orientation opposite to the instance orientation
    • wholeHyperplane

      public SubLimitAngle wholeHyperplane()
      Build a region covering the whole hyperplane.

      Since this class represent zero dimension spaces which does not have lower dimension sub-spaces, this method returns a dummy implementation of a SubHyperplane. This implementation is only used to allow the SubHyperplane class implementation to work properly, it should not be used otherwise.

      Specified by:
      wholeHyperplane in interface Hyperplane<Sphere1D>
      Returns:
      a dummy sub hyperplane
    • emptyHyperplane

      public SubLimitAngle emptyHyperplane()
      Build a sub-hyperplane covering nothing.

      Since this class represent zero dimension spaces which does not have lower dimension sub-spaces, this method returns a dummy implementation of a SubHyperplane. This implementation is only used to allow the SubHyperplane class implementation to work properly, it should not be used otherwise.

      Specified by:
      emptyHyperplane in interface Hyperplane<Sphere1D>
      Returns:
      a sub-hyperplane covering nothing
    • wholeSpace

      public ArcsSet wholeSpace()
      Build a region covering the whole space.
      Specified by:
      wholeSpace in interface Hyperplane<Sphere1D>
      Returns:
      a region containing the instance (really an IntervalsSet instance)
    • sameOrientationAs

      public boolean sameOrientationAs(Hyperplane<Sphere1D> other)
      Check if the instance has the same orientation as another hyperplane.

      This method is expected to be called on parallel hyperplanes. The method should not re-check for parallelism, only for orientation, typically by testing something like the sign of the dot-products of normals.

      Specified by:
      sameOrientationAs in interface Hyperplane<Sphere1D>
      Parameters:
      other - other hyperplane to check against the instance
      Returns:
      true if the instance and the other hyperplane have the same orientation
    • getLocation

      public S1Point getLocation()
      Get the hyperplane location on the circle.
      Returns:
      the hyperplane location
    • project

      public Point<Sphere1D> project(Point<Sphere1D> point)
      Project a point to the hyperplane.
      Specified by:
      project in interface Hyperplane<Sphere1D>
      Parameters:
      point - point to project
      Returns:
      projected point
    • getTolerance

      public double getTolerance()
      Get the tolerance below which points are considered to belong to the hyperplane.
      Specified by:
      getTolerance in interface Hyperplane<Sphere1D>
      Returns:
      tolerance below which points are considered to belong to the hyperplane