NAME

text_alignment − set text line alignment relative to starting point of each line

SYNOPSIS

C Syntax:

void text_alignment(fildes,h_select,v_select,horizontal,
vertical);
int fildes,h_select,v_select;
float horizontal,vertical;

FORTRAN77 Syntax:

subroutine text_alignment(fildes,h_select,
v_select,horizontal,vertical)
integer*4 fildes,h_select,v_select
real horizontal,vertical

Pascal Syntax:

procedure text_alignment(fildes,h_select,v_select:integer;
horizontal,vertical:real);

DESCRIPTION

Input Parameters

fildes Integer file descriptor returned by gopen when an I/O path to a graphics device is opened. 

h_select A value in:

TA_LEFT
TA_CENTER
TA_RIGHT
TA_CONTINUOUS_HORIZONTAL
TA_NORMAL_HORIZONTAL

v_select
A value in:

TA_TOP
TA_CAP
TA_HALF
TA_BASE
TA_BOTTOM
TA_CONTINUOUS_VERTICAL
TA_NORMAL_VERTICAL

horizontal
Fraction of the face of the text extent box which appears on the
negative side of the up vector. This value is only used with
TA_CONTINUOUS_HORZONTAL
and can be any real value.

vertical
Fraction of the face of the text extent box which appears on the
positive side of the base vector. This value is only used with
TA_CONTINUOUS_VERTICAL
and can be any real value.

Discussion

Text_alignment specifies the position of the text rectangle relative to the point specified in the text2d or text3d function.  If the h_select and/or the v_select parameter(s) is continuous, the text rectangle position is specified by the horizontal and/or vertical parameter(s).  The normal values depend on the character path at the time the text primitive is called:

TA_CENTER is equivalent to TA_CONTINUOUS_HORIZONTAL = 0.5. 

TA_HALF is equivalent to TA_CONTINUOUS_VERTICAL = 0.5. 

DEFAULTS

TA_NORMAL_HORIZONTAL and TA_NORMAL_VERTICAL. 

SEE ALSO

text(3G), Starbase Graphics Techniques.
 

Hewlett-Packard Company  —  May 11, 2021