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Version: 🚧 Nightly

Class f3d::transform2d_t

Definition: types.h (line 217)

Store a 3x3 transform matrix as a sequence of 9 float values VTK expects a 4x4 matrix, but for 2d transforms this is exposed as a 3x3 matrix

Inherits from:

Members​

Public functions​

Function transform2d_t​

f3d::transform2d_t::transform2d_t()=default

Return type:

Function transform2d_t​

f3d::transform2d_t::transform2d_t(const std::vector< double > &vec)

Parameters:

  • const std::vector< double > & vec

Return type:

Function transform2d_t​

f3d::transform2d_t::transform2d_t(const std::initializer_list< double > &list)

Parameters:

  • const std::initializer_list< double > & list

Return type:

Function transform2d_t​

f3d::transform2d_t::transform2d_t(double M1_1, double M1_2, double M1_3, double M2_1, double M2_2, double M2_3, double M3_1, double M3_2, double M3_3)

The variables of this function are based on the mathematical notation for matrices, where the coordinates correspond to the following:

      [M1_1, M1_2, M1_3]
M =   [M2_1, M2_2, M2_3]
      [M3_1, M3_2, M3_3]

Parameters:

  • double M1_1
  • double M1_2
  • double M1_3
  • double M2_1
  • double M2_2
  • double M2_3
  • double M3_1
  • double M3_2
  • double M3_3

Return type:

Function transform2d_t​

F3D_EXPORT f3d::transform2d_t::transform2d_t(const double_array_t< 2 > &scale, const double_array_t< 2 > &translate, const angle_deg_t &angleRad)

The general form of a 3x3 transformation matrix M with scale S(x,y), translation T(x,y), and angle a (in degrees), is solved out to the following:

    [cos(a)*S(x), -sin(a)*S(y),   T(x)]
M = [sin(a)*S(x), cos(a)*S(y),    T(y)]
    [0,           0,              1   ]

Using this formula, we fill each cell using the values in the constructor

Parameters:

Return type: F3D_EXPORT