Package gov.nih.mipav.util

Class CircleUtil

  • public class CircleUtil
extends java.lang.Object
    Public utility class for generating approximations to circles and spheres.
    Author:
    senseneyj

    • Constructor Summary

      Constructors 
      Constructor Description
      CircleUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      private static int computeEpsilon​(int x, int y, int r)  
      private static int computeEpsilonX​(int epsilon, int x, int dx)  
      private static int computeEpsilonXY​(int epsilon, int x, int dx, int y, int dy)  
      private static int computeEpsilonY​(int epsilon, int y, int dy)  
      static int[] get1DPointsInCircle​(int xCenter, int yCenter, int zCenter, int radius, int dimX, int dimY)
      Calculates the points of an approximate sphere whose center is at (xCenter, yCenter) with a given radius.
      static int[] get1DPointsInSphere​(int value, int radius, int xDim, int yDim)
      Calculates the points of an approximate sphere whose center is at value with a given radius.
      static int[] get1DPointsInSphere​(int xCenter, int yCenter, int zCenter, int radius, int xDim, int yDim)
      Calculates the points of an approximate sphere whose center is at (xCenter, yCenter, zCenter) with a given radius.
      static int[][] get2DPointsInCircle​(int xCenter, int yCenter, int r)
      Calculates the points of an approximate circle whose center is at (xCenter, yCenter) with a given radius.
      static int[][] get3DPointsInSphere​(int xCenter, int yCenter, int zCenter, double xRes, double yRes, double zRes, double radius)  
      static int[][] get3DPointsInSphere​(int xCenter, int yCenter, int zCenter, int radius)
      Calculates the points of an approximate sphere whose center is at (xCenter, yCenter, zCenter) witha given radius.
      static int[][] getQuadrantBoundaryPoints​(int radius, int quadrant)
      Generates 2D data points in a given quadrant for a specified radius

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • CircleUtil

        public CircleUtil()

    • Method Detail

      • get3DPointsInSphere

        public static int[][] get3DPointsInSphere​(int xCenter,
                                          int yCenter,
                                          int zCenter,
                                          double xRes,
                                          double yRes,
                                          double zRes,
                                          double radius)

      • get3DPointsInSphere

        public static int[][] get3DPointsInSphere​(int xCenter,
                                          int yCenter,
                                          int zCenter,
                                          int radius)
        Calculates the points of an approximate sphere whose center is at (xCenter, yCenter, zCenter) witha given radius.
        Returns:
        Array of (x,y,z) coordinates of an approximate sphere.

      • get2DPointsInCircle

        public static int[][] get2DPointsInCircle​(int xCenter,
                                          int yCenter,
                                          int r)
        Calculates the points of an approximate circle whose center is at (xCenter, yCenter) with a given radius.
        Returns:
        Array of (x,y) coordinates of an approximate circle.

      • get1DPointsInSphere

        public static int[] get1DPointsInSphere​(int xCenter,
                                        int yCenter,
                                        int zCenter,
                                        int radius,
                                        int xDim,
                                        int yDim)
        Calculates the points of an approximate sphere whose center is at (xCenter, yCenter, zCenter) with a given radius.
        Returns:
        Array of points of an approximate sphere.

      • get1DPointsInSphere

        public static int[] get1DPointsInSphere​(int value,
                                        int radius,
                                        int xDim,
                                        int yDim)
        Calculates the points of an approximate sphere whose center is at value with a given radius.
        Returns:
        Array of points of an approximate sphere.

      • get1DPointsInCircle

        public static int[] get1DPointsInCircle​(int xCenter,
                                        int yCenter,
                                        int zCenter,
                                        int radius,
                                        int dimX,
                                        int dimY)
        Calculates the points of an approximate sphere whose center is at (xCenter, yCenter) with a given radius.
        Returns:
        Array of points of an approximate sphere.

      • getQuadrantBoundaryPoints

        public static int[][] getQuadrantBoundaryPoints​(int radius,
                                                int quadrant)
        Generates 2D data points in a given quadrant for a specified radius
        Parameters:
        radius - Radius from origin for circle.
        quadrant - Allow 1 - 4 where 1: x>=0, y>0 2: x<0, y>=0 3: x<=0, y<0 4: x>0, y<=0

      • computeEpsilon

        private static int computeEpsilon​(int x,
                                  int y,
                                  int r)

      • computeEpsilonX

        private static int computeEpsilonX​(int epsilon,
                                   int x,
                                   int dx)

      • computeEpsilonY

        private static int computeEpsilonY​(int epsilon,
                                   int y,
                                   int dy)

      • computeEpsilonXY

        private static int computeEpsilonXY​(int epsilon,
                                    int x,
                                    int dx,
                                    int y,
                                    int dy)