Name

pbuild_tran_matrix − Creates a 2D homogeneous transformation matrix and performs the specified transformation. 

Operating States: PHOP, ∗, ∗, ∗
PHIGS standard function

Syntax

void pbuild_tran_matrix (
  const Ppoint  ∗pt,         /∗ (I) Fixed point ∗/
  const Pvec    ∗shift,      /∗ (I) Shift vector ∗/
  Pfloat         angle,      /∗ (I) Rotation angle, in radians ∗/
  const Pvec    ∗scale,      /∗ (I) Scale factor vector ∗/
  Pint          ∗error_ind,  /∗ (O) Error indicator ∗/
  Pmatrix        matrix      /∗ (O) Transformation matrix ∗/
)

Data Structures

typedef struct {
    Pfloat     x;    /∗ x coordinate ∗/
    Pfloat     y;    /∗ y coordinate ∗/
} Ppoint;
typedef struct {
    Pfloat     delta_x;    /∗ delta x value ∗/
    Pfloat     delta_y;    /∗ delta y value ∗/
} Pvec;
typedef Pfloat Pmatrix[3][3];

Description

pbuild_tran_matrix creates a two-dimensional (3 x 3) homogeneous transformation matrix, which performs the specified transformation.  The order of the transformation is as follows:

1Scale (relative to the specified fixed point)

2Rotate (relative to the specified fixed point)

3Shift (move)

See Also

pcompose_tran_matrix
pset_global_tran
pset_local_tran