LIBBV(3)

NAME

libbv - BRL-CAD view graphics interface subroutines

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SYNOPSIS
DESCRIPTION
FILES
WARNINGS
SEE ALSO
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SYNOPSIS

void pl_3box(FILE *fp, int x0, int y0, int z0, int x1, int y1, int z1);
void pl_3cont(FILE *fp, int x, int y, int z);
void pl_3line(FILE *fp, int x0, int y0, int z0, int x1, int y1, int z1);
void pl_3move(FILE *fp, int x, int y, int z);
void pl_3point(FILE *fp, int x, int y, int z);
void pl_3space(FILE *fp, int x0, int y0, int z0, int x1, int y1, int z1);
void pl_arc(FILE *fp, int xc, int yc, int x0, int y0, int x1, int y1);
void pl_box(FILE *fp, int x0, int y0, int x1, int y1);
pl_circle(FILE *fp, int x, int y, int r);
void pl_color(FILE *fp, int r, int g, int b);
void pl_cont(FILE *fp, int x, int y);
void pl_erase(FILE *fp);
void pl_label(FILE *fp, const char *s);
void pl_line(FILE *fp, int x0, int y0, int x1, int y1);
void pl_linmod(FILE *fp, const char *s);
void pl_move(FILE *fp, int x, int y);
void pl_point(FILE *fp, int x, int y);
void pl_space(FILE *fp, int x0, int y0, int x1, int y1);

These subroutines generate graphic output commands for processing with the plot(1) plotting filters. They are slightly more general than those in libplot as these take a file pointer. They also include the BRL 3-D extensions to the plot intermediate code.

Pl_space or pl_3space must be used before any of the graphic primitives to declare the amount of space necessary. See plot3(5).

Pl_box or pl_3box draws a box between the two given opposite points. The ''pen'' will be left at the second point.

Pl_circle draws a circle of radius r with center at the point (x, y). Note that circle and arc cannot be transformed in three space if one is using a filter to do that.

Pl_arc draws an arc of a circle with center at the point (x, y) between the points (x0, y0) and (x1, y1).

String arguments to pl_label and pl_linmod are terminated by nulls and do not contain new-lines.

There are also 2-D and 3_D double-precision versions, with arguments identical to their counterparts above. The naming conventions are to change the prefix to "pd"; examples are thus pd_point and pd_3point. Vector versions for 3_D (also double-precision) are prefixed "pdv", as in pdv_3point.

See plot3(5) and plot(5) for a description of the effect of the remaining functions.