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--
-- File : SplineSurface.cdl
-- Created : Sat 9 Jan 1993
-- Author : CKY / Contract Toubro-Larsen ( Kiran )
--
---Copyright : MATRA-DATAVISION 1993
--
class SplineSurface from IGESGeom inherits IGESEntity
---Purpose: defines IGESSplineSurface, Type <114> Form <0>
-- in package IGESGeom
-- A parametric spline surface is a grid of polynomial
-- patches. Patch could be of the type Linear, Quadratic,
-- Cubic, Wilson-Fowler, Modified Wilson-Fowler, B-Spline
-- The M * N grid of patches is defined by the 'u' break
-- points TU(1), TU(2), ..., TU(M+1) and the 'v' break
-- points TV(1), TV(2), TV(3) ..., TV(N+1).
uses
Pnt from gp,
HArray1OfReal from TColStd,
HArray2OfReal from TColStd,
HArray2OfHArray1OfReal from IGESBasic
raises DimensionMismatch, OutOfRange
is
Create returns mutable SplineSurface;
-- Specific Methods pertaining to the class
Init (me : mutable;
aBoundaryType, aPatchType : Integer;
allUBreakpoints, allVBreakpoints : HArray1OfReal;
allXCoeffs, allYCoeffs, allZCoeffs : HArray2OfHArray1OfReal)
raises DimensionMismatch;
---Purpose : This method is used to set the fields of the class
-- SplineSurface
-- - aBoundaryType : Type of Spline boundary
-- 1 = Linear
-- 2 = Quadratic
-- 3 = Cubic
-- 4 = Wilson-Fowler
-- 5 = Modified Wilson-Fowler
-- 6 = B-spline
-- - aPatchType : Type of patch contained in the grid
-- 1 = Cartesian Product
-- 0 = Unspecified
-- - allUBreakpoints : u values of grid lines
-- - allVBreakpoints : v values of grid lines
-- - allXCoeffs : X coefficients of M x N patches
-- - allYCoeffs : Y coefficients of M x N patches
-- - allZCoeffs : Z coefficients of M x N patches
-- raises exception if allXCoeffs, allYCoeffs & allZCoeffs are not
-- of the same size.
-- or if the size of each element of the double array is not 16
NbUSegments(me) returns Integer;
---Purpose : returns the number of U segments
NbVSegments(me) returns Integer;
---Purpose : returns the number of V segments
BoundaryType(me) returns Integer;
---Purpose : returns boundary type
PatchType(me) returns Integer;
---Purpose : returns patch type
UBreakPoint(me; anIndex : Integer) returns Real
raises OutOfRange;
---Purpose : returns U break point of the grid line referred to by anIndex
-- raises exception if anIndex <= 0 or anIndex > NbUSegments() + 1
VBreakPoint(me; anIndex : Integer) returns Real
raises OutOfRange;
---Purpose : returns V break point of the grid line referred to by anIndex
-- raises exception if anIndex <= 0 or anIndex > NbVSegments() + 1
XPolynomial(me; anIndex1, anIndex2 : Integer) returns HArray1OfReal
raises OutOfRange;
---Purpose : returns X polynomial of patch referred to by anIndex1, anIndex2
-- raises exception if anIndex1 <= 0 or anIndex1 > NbUSegments()
-- or anIndex2 <= 0 or anIndex2 > NbVSegments()
YPolynomial(me; anIndex1, anIndex2 : Integer) returns HArray1OfReal
raises OutOfRange;
---Purpose : returns Y polynomial of patch referred to by anIndex1, anIndex2
-- raises exception if anIndex1 <= 0 or anIndex1 > NbUSegments()
-- or anIndex2 <= 0 or anIndex2 > NbVSegments()
ZPolynomial(me; anIndex1, anIndex2 : Integer) returns HArray1OfReal
raises OutOfRange;
---Purpose : returns Z polynomial of patch referred to by anIndex1, anIndex2
-- raises exception if anIndex1 <= 0 or anIndex1 > NbUSegments()
-- or anIndex2 <= 0 or anIndex2 > NbVSegments()
Polynomials (me; XCoef, YCoef, ZCoef : out HArray2OfHArray1OfReal);
---Purpose : returns in one all the polynomial values "in bulk"
-- usefull for massive treatements
fields
--
-- Class : IGESGeom_SplineSurface
--
-- Purpose : Declaration of variables specific to the definition
-- of the Class SplineSurface.
--
-- Reminder : A SplineSurface instance is defined by :
-- Spline boundary type, the type of patches in the grid
-- the number of U, V segments, the break points, the X, Y, Z
-- polynomials for each patch.
theBoundaryType : Integer;
thePatchType : Integer;
theUBreakPoints : HArray1OfReal;
theVBreakPoints : HArray1OfReal;
theXCoeffs : HArray2OfHArray1OfReal;
-- each element of the HArray2 is of size 16
-- the HArray2 is of size MN where M is the number of
-- U segments and N is the number of V segments
theYCoeffs : HArray2OfHArray1OfReal;
-- each element of the HArray2 is of size 16
-- the HArray2 is of size MN where M is the number of
-- U segments and N is the number of V segments
theZCoeffs : HArray2OfHArray1OfReal;
-- each element of the HArray2 is of size 16
-- the HArray2 is of size MN where M is the number of
-- U segments and N is the number of V segments
end SplineSurface;
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