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## igeo
Class IArcGeo

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

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

    public class IArcGeo

extends ICurveGeo

Geometry class of an arc. Implemented as a type of NURBS curve.

Author:
  Satoru Sugihara

Field Summary
`IDoubleI` | `angle`
`IVecI` | `center`
`static double` | `maxSegmentAngle`
`IVecI` | `normal`
`IVecI` | `startPt`

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

Fields inherited from class igeo.IParameterObject
`parent`

Constructor Summary
`IArcGeo()`
`IArcGeo(IVecI center, IVecI startPt, IVecI endPt, boolean flipArcSide)`
`IArcGeo(IVecI center, IVecI normal, IVecI startPt, double angle)`
`IArcGeo(IVecI center, IVecI startPt, IVecI endPt, IBoolI flipArcSide)`
`IArcGeo(IVecI center, IVecI normal, IVecI startPt, IDoubleI angle)`
`IArcGeo(IVecI center, IVecI startPt, IVecI midPt, IVecI endPt, IVecI normal)`

Method Summary
`static IVec4[]` | `arcCP(IVec center, IVec startPt, IVec endPt, boolean flipArcSide)`
`static IVec4[]` | `arcCP(IVec center, IVec normal, IVec startPt, double angle)`
`static IVec4[]` | `arcCP(IVec center, IVec startPt, IVec midPt, IVec endPt, IVec normal)`
`static int` | `arcDeg()`
`static double[]` | `arcKnots(double angle)`
`void` | `init(IVecI center, IVecI startPt, IVecI endPt, IBoolI flipArcSide)`
`void` | `init(IVecI center, IVecI normal, IVecI startPt, IDoubleI angle)`
`void` | `init(IVecI center, IVecI startPt, IVecI midPt, IVecI endPt, IVecI normal)`

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

### maxSegmentAngle

    public static double maxSegmentAngle

### center

    public IVecI center

### normal

    public IVecI normal

### startPt

    public IVecI startPt

### angle

    public IDoubleI angle

Constructor Detail

### IArcGeo

    public IArcGeo()

### IArcGeo

    public IArcGeo(IVecI center,
                   IVecI normal,
                   IVecI startPt,
                   double angle)

### IArcGeo

    public IArcGeo(IVecI center,
                   IVecI normal,
                   IVecI startPt,
                   IDoubleI angle)

### IArcGeo

    public IArcGeo(IVecI center,
                   IVecI startPt,
                   IVecI endPt,
                   IBoolI flipArcSide)

### IArcGeo

    public IArcGeo(IVecI center,
                   IVecI startPt,
                   IVecI endPt,
                   boolean flipArcSide)

### IArcGeo

    public IArcGeo(IVecI center,
                   IVecI startPt,
                   IVecI midPt,
                   IVecI endPt,
                   IVecI normal)

Method Detail

### arcDeg

    public static int arcDeg()

### arcCP

    public static IVec4[] arcCP(IVec center,
                                IVec normal,
                                IVec startPt,
                                double angle)

### arcCP

    public static IVec4[] arcCP(IVec center,
                                IVec startPt,
                                IVec endPt,
                                boolean flipArcSide)

### arcCP

    public static IVec4[] arcCP(IVec center,
                                IVec startPt,
                                IVec midPt,
                                IVec endPt,
                                IVec normal)

### arcKnots

    public static double[] arcKnots(double angle)

### init

    public void init(IVecI center,
                     IVecI normal,
                     IVecI startPt,
                     IDoubleI angle)

### init

    public void init(IVecI center,
                     IVecI startPt,
                     IVecI endPt,
                     IBoolI flipArcSide)

### init

    public void init(IVecI center,
                     IVecI startPt,
                     IVecI midPt,
                     IVecI endPt,
                     IVecI normal)

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