#include <gp_GTrsf2d.hxx>
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
gp_GTrsf2d () | |
returns identity transformation. | |
gp_GTrsf2d (const gp_Trsf2d &T) | |
Converts the gp_Trsf2d transformation T into a general transformation. . | |
gp_GTrsf2d (const gp_Mat2d &M, const gp_XY &V) | |
Creates a transformation based on the matrix M and the vector V where M defines the vectorial part of the transformation, and V the translation part. . | |
Standard_EXPORT void | SetAffinity (const gp_Ax2d &A, const Standard_Real Ratio) |
Changes this transformation into an affinity of ratio Ratio with respect to the axis A. Note: An affinity is a point-by-point transformation that transforms any point P into a point P' such that if H is the orthogonal projection of P on the axis A, the vectors HP and HP' satisfy: HP' = Ratio * HP. . | |
void | SetValue (const Standard_Integer Row, const Standard_Integer Col, const Standard_Real Value) |
Replaces the coefficient (Row, Col) of the matrix representing this transformation by Value, Raises OutOfRange if Row < 1 or Row > 2 or Col < 1 or Col > 3 . | |
Standard_EXPORT void | SetTranslationPart (const gp_XY &Coord) |
Replacesthe translation part of this transformation by the coordinates of the number pair Coord. . | |
void | SetTrsf2d (const gp_Trsf2d &T) |
Assigns the vectorial and translation parts of T to this transformation. . | |
void | SetVectorialPart (const gp_Mat2d &Matrix) |
Replaces the vectorial part of this transformation by Matrix. . | |
Standard_Boolean | IsNegative () const |
Returns true if the determinant of the vectorial part of this transformation is negative. . | |
Standard_Boolean | IsSingular () const |
Returns true if this transformation is singular (and therefore, cannot be inverted). Note: The Gauss LU decomposition is used to invert the transformation matrix. Consequently, the transformation is considered as singular if the largest pivot found is less than or equal to gp::Resolution(). Warning If this transformation is singular, it cannot be inverted. . | |
gp_TrsfForm | Form () const |
Returns the nature of the transformation. It can be an identity transformation, a rotation, a translation, a mirror transformation (relative to a point or axis), a scaling transformation, a compound transformation or some other type of transformation. . | |
const gp_XY & | TranslationPart () const |
Returns the translation part of the GTrsf2d. . | |
const gp_Mat2d & | VectorialPart () const |
Computes the vectorial part of the GTrsf2d. The returned Matrix is a 2*2 matrix. . | |
Standard_Real | Value (const Standard_Integer Row, const Standard_Integer Col) const |
Returns the coefficients of the global matrix of transformation. Raiseë OutOfRange if Row < 1 or Row > 2 or Col < 1 or Col > 3 . | |
Standard_Real | operator() (const Standard_Integer Row, const Standard_Integer Col) const |
Standard_EXPORT void | Invert () |
gp_GTrsf2d | Inverted () const |
Computes the reverse transformation. Raised an exception if the matrix of the transformation is not inversible. . | |
Standard_EXPORT void | Multiply (const gp_GTrsf2d &T) |
void | operator *= (const gp_GTrsf2d &T) |
gp_GTrsf2d | Multiplied (const gp_GTrsf2d &T) const |
Computes the transformation composed with T and <me>. In a C++ implementation you can also write Tcomposed = <me> * T. Example : GTrsf2d T1, T2, Tcomp; ............... //composition : Tcomp = T2.Multiplied(T1); // or (Tcomp = T2 * T1) // transformation of a point XY P(10.,3.); XY P1(P); Tcomp.Transforms(P1); //using Tcomp XY P2(P); T1.Transforms(P2); //using T1 then T2 T2.Transforms(P2); // P1 = P2 !!! . | |
gp_GTrsf2d | operator * (const gp_GTrsf2d &T) const |
Standard_EXPORT void | PreMultiply (const gp_GTrsf2d &T) |
Computes the product of the transformation T and this transformation, and assigns the result to this transformation: this = T * this . | |
Standard_EXPORT void | Power (const Standard_Integer N) |
gp_GTrsf2d | Powered (const Standard_Integer N) const |
Computes the following composition of transformations <me> * <me> * .......* <me>, N time. if N = 0 <me> = Identity if N < 0 <me> = <me>.Inverse() *...........* <me>.Inverse(). . | |
void | Transforms (gp_XY &Coord) const |
gp_XY | Transformed (const gp_XY &Coord) const |
void | Transforms (Standard_Real &X, Standard_Real &Y) const |
Applies this transformation to the coordinates: - of the number pair Coord, or - X and Y. Note: - Transforms modifies X, Y, or the coordinate pair Coord, while - Transformed creates a new coordinate pair. . | |
Standard_EXPORT gp_Trsf2d | Trsf2d () const |
Converts this transformation into a gp_Trsf2d transformation. Exceptions Standard_ConstructionError if this transformation cannot be converted, i.e. if its form is gp_Other. . | |
const gp_Mat2d & | _CSFDB_Getgp_GTrsf2dmatrix () const |
const gp_XY & | _CSFDB_Getgp_GTrsf2dloc () const |
gp_TrsfForm | _CSFDB_Getgp_GTrsf2dshape () const |
void | _CSFDB_Setgp_GTrsf2dshape (const gp_TrsfForm p) |
Standard_Real | _CSFDB_Getgp_GTrsf2dscale () const |
void | _CSFDB_Setgp_GTrsf2dscale (const Standard_Real p) |
Private Attributes | |
gp_Mat2d | matrix |
gp_XY | loc |
gp_TrsfForm | shape |
Standard_Real | scale |
Friends | |
Standard_EXPORT friend Handle_Standard_Type & | gp_GTrsf2d_Type_ () |
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