AutoCAD® 2002 - Autodesk

Slide file data records (continued)
Record type
(hex) Bytes Meaning Description
FB 5 Offset vector The low-order byte and the following three
bytes specify the endpoints (from-X, from-Y,
to-X, to-Y) of a vector, in terms of offsets (–128
to +127) from the saved last point. The adjusted
from point is saved as the last point for use by
subsequent vectors
FC 2 End of file The low-order byte is 00
FD 6 Solid fill The low-order byte is always zero. The following
two 2-byte values specify the X and Y
coordinates of one vertex of a polygon to be
solid filled. Three to ten such records occur in
sequence. A Solid fill record with a negative Y
coordinate indicates the start or end of such a
flood sequence. In the start record, the X
coordinate indicates the number of vertex
records to follow
FE 3 Common
endpoint
vector
This is a vector starting at the last point. The
low-order byte and the following byte specify
to-X and to-Y in terms of offsets (–128 to +127)
from the saved last point. The adjusted to point
is saved as the last point for use by subsequent
vectors
FF 2 New color Subsequent vectors are to be drawn using the
color number indicated by the low-order byte
If a slide contains any vectors at all, a New color record will be the first data
record. The order of the vectors in a slide, and the order of the endpoints of
those vectors, may vary.
For example, the following is an annotated hex dump of a simple slide file
created on an IBM PC/AT with an IBM Enhanced Graphics Adapter. The slide
consists of a white diagonal line from the lower-left corner to the upper-right
corner of the drawing area, a green vertical line near the lower-left corner,
and a small red rectangle at the lower-left corner.
Slide Files | 161