LocalAnalysis

This package gives tools to check the local continuity between two points situated on two curves or two surfaces.

Constructors(1)

constructor(): LocalAnalysis

LocalAnalysis_CurveContinuity

This class gives tools to check local continuity C0 C1 C2 G1 G2 between two points situated on two curves.

Constructors(1)

constructor(Curv1: Geom_Curve, u1: number, Curv2: Geom_Curve, u2: number, Order: GeomAbs_Shape, EpsNul?: number, EpsC0?: number, EpsC1?: number, EpsC2?: number, EpsG1?: number, EpsG2?: number, Percent?: number, Maxlen?: number): LocalAnalysis_CurveContinuity
-u1 is the parameter of the point on Curv1 -u2 is the parameter of the point on Curv2 -Order is the required continuity: GeomAbs_C0 GeomAbs_C1 GeomAbs_C2 GeomAbs_G1 GeomAbs_G2
-EpsNul is used to detect a vector with null magnitude (in mm)
-EpsC0 is used for C0 continuity to confuse two points (in mm)
-EpsC1 is an angular tolerance in radians used for C1 continuity to compare the angle between the first derivatives
-EpsC2 is an angular tolerance in radians used for C2 continuity to compare the angle between the second derivatives
-EpsG1 is an angular tolerance in radians used for G1 continuity to compare the angle between the tangents
-EpsG2 is an angular tolerance in radians used for G2 continuity to compare the angle between the normals
- percent: percentage of curvature variation (unitless) used for G2 continuity
- Maxlen is the maximum length of Curv1 or Curv2 in meters used to detect nul curvature (in mm)
  the constructor computes the quantities which are necessary to check the continuity in the following cases:
  case C0
- the distance between P1 and P2 with P1=Curv1 (u1) and P2=Curv2(u2)
  case C1
- the angle between the first derivatives dCurv1(u1) dCurv2(u2) ------- and -------- du du
- the ratio between the magnitudes of the first derivatives
  the angle value is between 0 and PI/2
  case C2
- the angle between the second derivatives 2 2 d Curv1(u1) d Curv2(u2) 2 2 du du
  the angle value is between 0 and PI/2
- the ratio between the magnitudes of the second derivatives
  case G1
  the angle between the tangents at each point
  the angle value is between 0 and PI/2
  case G2
  -the angle between the normals at each point
  the angle value is between 0 and PI/2
- the relative variation of curvature:
  |curvat1-curvat2|
  1/2 (curvat1*curvat2)
  where curvat1 is the curvature at the first point and curvat2 the curvature at the second point
Parameters (13)
- Curv1
- u1
- Curv2
- u2
- Order
- EpsNul
- EpsC0
- EpsC1
- EpsC2
- EpsG1
- EpsG2
- Percent
- Maxlen

Instance methods(16)

IsDone(): boolean
StatusError(): LocalAnalysis_StatusErrorType
ContinuityStatus(): GeomAbs_Shape
C0Value(): number
C1Angle(): number
C1Ratio(): number
C2Angle(): number
C2Ratio(): number
G1Angle(): number
G2Angle(): number
G2CurvatureVariation(): number
IsC0(): boolean
IsC1(): boolean
IsC2(): boolean
IsG1(): boolean
IsG2(): boolean

LocalAnalysis_StatusErrorType

Properties(5)

LocalAnalysis_NullFirstDerivative:'LocalAnalysis_NullFirstDerivative'readonly
LocalAnalysis_NullSecondDerivative:'LocalAnalysis_NullSecondDerivative'readonly
LocalAnalysis_TangentNotDefined:'LocalAnalysis_TangentNotDefined'readonly
LocalAnalysis_NormalNotDefined:'LocalAnalysis_NormalNotDefined'readonly
LocalAnalysis_CurvatureNotDefined:'LocalAnalysis_CurvatureNotDefined'readonly

LocalAnalysis_SurfaceContinuity

This class gives tools to check local continuity C0 C1 C2 G1 G2 between two points situated on two surfaces.

Constructors(3)

constructor(EpsNul?: number, EpsC0?: number, EpsC1?: number, EpsC2?: number, EpsG1?: number, Percent?: number, Maxlen?: number): LocalAnalysis_SurfaceContinuity
This constructor is used when we want to compute many analysis. After we use the method ComputeAnalysis.
Parameters (7)
- EpsNul
- EpsC0
- EpsC1
- EpsC2
- EpsG1
- Percent
- Maxlen
constructor(curv1: Geom2d_Curve, curv2: Geom2d_Curve, U: number, Surf1: Geom_Surface, Surf2: Geom_Surface, Order: GeomAbs_Shape, EpsNul?: number, EpsC0?: number, EpsC1?: number, EpsC2?: number, EpsG1?: number, Percent?: number, Maxlen?: number): LocalAnalysis_SurfaceContinuity
Parameters (13)
- curv1
- curv2
- U
- Surf1
- Surf2
- Order
- EpsNul
- EpsC0
- EpsC1
- EpsC2
- EpsG1
- Percent
- Maxlen
constructor(Surf1: Geom_Surface, u1: number, v1: number, Surf2: Geom_Surface, u2: number, v2: number, Order: GeomAbs_Shape, EpsNul?: number, EpsC0?: number, EpsC1?: number, EpsC2?: number, EpsG1?: number, Percent?: number, Maxlen?: number): LocalAnalysis_SurfaceContinuity
-u1,v1 are the parameters of the point on Surf1 -u2,v2 are the parameters of the point on Surf2 -Order is the required continuity: GeomAbs_C0 GeomAbs_C1 GeomAbs_C2 GeomAbs_G1 GeomAbs_G2
-EpsNul is used to detect a a vector with nul magnitude
-EpsC0 is used for C0 continuity to confuse two points (in mm)
-EpsC1 is an angular tolerance in radians used for C1 continuity to compare the angle between the first derivatives
-EpsC2 is an angular tolerance in radians used for C2 continuity to compare the angle between the second derivatives
-EpsG1 is an angular tolerance in radians used for G1 continuity to compare the angle between the normals
-Percent: percentage of curvature variation (unitless) used for G2 continuity
- Maxlen is the maximum length of Surf1 or Surf2 in meters used to detect null curvature (in mm)
  the constructor computes the quantities which are necessary to check the continuity in the following cases:
  case C0
- the distance between P1 and P2 with P1=Surf (u1,v1) and P2=Surfv2(u2,v2)
  case C1
- the angle between the first derivatives in u :
  dSurf1(u1,v1) dSurf2(u2,v2) ---------- and -------- du du
  the angle value is between 0 and PI/2
- the angle between the first derivatives in v :
  dSurf1(u1,v1) dSurf2(u2,v2) ------- and -------- dv dv
- the ratio between the magnitudes of the first derivatives in u
- the ratio between the magnitudes of the first derivatives in v
  the angle value is between 0 and pi/2
  case C2
- the angle between the second derivatives in u 2 2 d Surf1(u1,v1) d Surf2(u2,v2) 2 2 d u d u
- the ratio between the magnitudes of the second derivatives in u
- the ratio between the magnitudes of the second derivatives in v
  the angle value is between 0 and PI/2
  case G1
  -the angle between the normals at each point the angle value is between 0 and PI/2
  case G2
- the maximum normal curvature gap between the two points
Parameters (14)
- Surf1
- u1
- v1
- Surf2
- u2
- v2
- Order
- EpsNul
- EpsC0
- EpsC1
- EpsC2
- EpsG1
- Percent
- Maxlen

Instance methods(20)

ComputeAnalysis(Surf1: GeomLProp_SLProps, Surf2: GeomLProp_SLProps, Order: GeomAbs_Shape): void
Parameters (3)
- Surf1
- Surf2
- Order
IsDone(): boolean
ContinuityStatus(): GeomAbs_Shape
StatusError(): LocalAnalysis_StatusErrorType
C0Value(): number
C1UAngle(): number
C1URatio(): number
C1VAngle(): number
C1VRatio(): number
C2UAngle(): number
C2URatio(): number
C2VAngle(): number
C2VRatio(): number
G1Angle(): number
G2CurvatureGap(): number
IsC0(): boolean
IsC1(): boolean
IsC2(): boolean
IsG1(): boolean
IsG2(): boolean