TEXT_ORIENTATION(3G)

NAME

text_orientation − specify text orientation.

SYNOPSIS

C Syntax:

void text_orientation2d(fildes,up_x,up_y,base_x,base_y);
int fildes;
float up_x,up_y,base_x,base_y;

void text_orientation3d(fildes,up_x,up_y,up_z,base_x,
base_y,base_z);
int fildes;
float up_x,up_y,up_z,base_x,base_y,base_z;

FORTRAN77 Syntax:

subroutine text_orientation2d(fildes,up_x,up_y,
base_x,base_y)
integer*4 fildes
real up_x,up_y,base_x,base_y

subroutine text_orientation3d(fildes,up_x,up_y,
up_z,base_x,base_y,base_z)
integer*4 fildes
real up_x,up_y,up_z,base_x,base_y,base_z

Pascal Syntax:

procedure text_orientation2d(fildes:integer;up_x,up_y,
base_x,base_y:real);

procedure text_orientation3d(fildes:integer;up_x,up_y,
up_z,base_x,base_y,base_z:real);

DESCRIPTION

Input Parameters

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

up_x,up_y,up_z Coordinates of the up vector relative to (0.0,0.0,0.0).

base_x,base_y,base_z Coordinates of the base vector relative to (0.0,0.0,0.0).

Discussion

Text_orientation defines two vectors which, in turn, determine the orientation of subsequently drawn text characters. The up vector has the effect of slanting characters away from the vertical, and also defines the direction of line feed characters. The base vector defines the positioning of subsequent characters in a string when the text path is either left or right.

DEFAULTS

up_x,up_y,up_z = (0.0,1.0,0.0)
base_x,base_y,base_z = (1.0,0.0,0.0)

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