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## igeo
Class ICircleGeo

    java.lang.Object
      igeo.IParameterObject
          igeo.INurbsGeo
              igeo.ICurveGeo
                  igeo.ICircleGeo

All Implemented Interfaces:
  ICurveI, ICurveOp, IEntityParameter, IParameter, ISubobject, ITransformable, IVal

    public class ICircleGeo

extends ICurveGeo

Geometry class of a circle. Implemented as a type of NURBS curve.

Author:
  Satoru Sugihara

Field Summary
`IVecI` | `center`
`IVecI` | `normal`
`IDoubleI` | `xradius`
`IDoubleI` | `yradius`

Fields inherited from class igeo.ICurveGeo
`basisFunction, controlPoints, defaultWeights, degree, derivativeFunction, knots, uend, uSearchCache, ustart`

Fields inherited from class igeo.IParameterObject
`parent`

Constructor Summary
`ICircleGeo(IVecI center, IVecI normal, double radius)`
`ICircleGeo(IVecI center, IVecI normal, double radius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, double xradius, double yradius)`
`ICircleGeo(IVecI center, IVecI normal, double xradius, double yradius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IDoubleI radius)`
`ICircleGeo(IVecI center, IVecI normal, IDoubleI radius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IDoubleI xradius, IDoubleI yradius)`
`ICircleGeo(IVecI center, IVecI normal, IDoubleI xradius, IDoubleI yradius, boolean approx)`
`ICircleGeo(IVecI center, IVecI xradiusVec, IVecI yradiusVec)`
`ICircleGeo(IVecI center, IVecI xradiusVec, IVecI yradiusVec, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, double radius)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, double radius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, double xradius, double yradius)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, double xradius, double yradius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, IDoubleI radius)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, IDoubleI radius, boolean approx)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, IDoubleI xradius, IDoubleI yradius)`
`ICircleGeo(IVecI center, IVecI normal, IVecI rollDir, IDoubleI xradius, IDoubleI yradius, boolean approx)`

Method Summary
`static IVec4[]` | `circleCP(IVec center, double radius)`
`static IVec4[]` | `circleCP(IVec center, IVec normal, double radius)`
`static IVec4[]` | `circleCP(IVec center, IVec normal, IVec rollDir, double radius)`
`static IVec4[]` | `circleCP(IVec center, IVec normal, IVec rollDir, double xradius, double yradius)`
`static IVec[]` | `circleCPApprox(IVec center, IVec normal, IVec rollDir, double xradius, double yradius)` for some platform where regular circle cp with duplicates cannot be shown properly.
`static int` | `circleDeg()`
`static double[]` | `circleKnots()`
`void` | `init()`
`void` | `initApprox()`
`static IVec4[]` | `ovalCP(IVec center, IVec xaxis, IVec yaxis)`
`static IVec[]` | `ovalCPApprox(IVec center, IVec xaxis, IVec yaxis)`

Methods inherited from class igeo.ICurveGeo
`add, add, add, add, add, add, add, addCP, addCP, addCP, addCP, addCP, addCP, addCP, addCP, center, checkDuplicatedCP, checkDuplicatedCP, checkDuplicatedCP, checkDuplicatedCPOnEdge, closePt, closePt, cp, cp, cp, cp, cp, cp, cpNum, cpNum, cpNum, cps, deg, deg, deg, dist, dist, div, div, dup, end, endCP, ep, ep, epNum, epNum, epNum, flip, flipU, get, getPointsFromArray, init, init, init, init, init, insertCP, insertCP, isClosed, isClosed, isClosed, isInside2d, isInside2d, isRational, isRational, isRational, isValid, isValidCP, isValidCP, knot, knot, knotNum, knotNum, knotNum, knots, knots, knots, len, len, len, len, mid, mirror, mirror, mul, mul, mv, mv, mv, neg, num, num, num, overlapCPNum, pt, pt, pt, ref, ref, removeCP, removeCP, removeCP, rev, revU, rot, rot, rot, rot, rot, rot, rot, rot, rot2, rot2, rot2, rot2, rot2, rot2, scale, scale, scale, scale, scale1d, scale1d, scale1d, scale1d, shear, shear, shear, shear, shearXY, shearXY, shearXY, shearXY, shearYZ, shearYZ, shearYZ, shearYZ, shearZX, shearZX, shearZX, shearZX, start, startCP, sub, sub, sub, tan, tan, tan, transform, transform, transform, transform, translate, translate, translate, u, u, u, u, u, u, u, u, uend, uend, uend, updateCache, ustart, ustart, ustart`

Methods inherited from class igeo.INurbsGeo
`createClosedCP, createClosedCPInU, createClosedCPInV, createClosedKnots, createKnots, createKnots, invertKnots, isValidKnots, normalizeKnots`

Methods inherited from class igeo.IParameterObject
`createObject, parent, parent`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### center

    public IVecI center

### normal

    public IVecI normal

### xradius

    public IDoubleI xradius

### yradius

    public IDoubleI yradius

Constructor Detail

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IDoubleI radius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      double radius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IDoubleI xradius,
                      IDoubleI yradius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      double xradius,
                      double yradius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      double radius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      IDoubleI radius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      double xradius,
                      double yradius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      IDoubleI xradius,
                      IDoubleI yradius)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI xradiusVec,
                      IVecI yradiusVec)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IDoubleI radius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      double radius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      double xradius,
                      double yradius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IDoubleI xradius,
                      IDoubleI yradius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      double radius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      IDoubleI radius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      double xradius,
                      double yradius,
                      boolean approx)

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI normal,
                      IVecI rollDir,
                      IDoubleI xradius,
                      IDoubleI yradius,
                      boolean approx)

Parameters:
  `rollDir` - direction of start point

### ICircleGeo

    public ICircleGeo(IVecI center,
                      IVecI xradiusVec,
                      IVecI yradiusVec,
                      boolean approx)

Method Detail

### circleDeg

    public static int circleDeg()

### circleKnots

    public static double[] circleKnots()

### circleCP

    public static IVec4[] circleCP(IVec center,
                                   double radius)

### circleCP

    public static IVec4[] circleCP(IVec center,
                                   IVec normal,
                                   double radius)

### circleCP

    public static IVec4[] circleCP(IVec center,
                                   IVec normal,
                                   IVec rollDir,
                                   double radius)

### circleCP

    public static IVec4[] circleCP(IVec center,
                                   IVec normal,
                                   IVec rollDir,
                                   double xradius,
                                   double yradius)

### ovalCP

    public static IVec4[] ovalCP(IVec center,
                                 IVec xaxis,
                                 IVec yaxis)

### circleCPApprox

    public static IVec[] circleCPApprox(IVec center,
                                        IVec normal,
                                        IVec rollDir,
                                        double xradius,
                                        double yradius)

  for some platform where regular circle cp with duplicates cannot be shown properly. (ex. AI) knots for these control points can be uniform.

### ovalCPApprox

    public static IVec[] ovalCPApprox(IVec center,
                                      IVec xaxis,
                                      IVec yaxis)

### init

    public void init()

### initApprox

    public void initApprox()

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