GINO's proprietary metafile (Drawings that have one or more pictures)
B
gSavpic()
GINO's proprietary metafile (To create segment libraries of objects)
Device Characteristics
A & B
Maximum Width
No limit
Maximum Height
No limit
Default Width (mm)
400.0 (-200.0 to +200.0)
Default Height (mm)
400.0 (-200.0 to +200.0)
Colours / Pens
255
Colour Palette
Dynamic
Broken Linestyles
16
Drawing Modes
No
Thick Lines
Yes
Line Ends
Yes
Arcs
Yes
Symbols
Yes
Fonts
1
Character Sizes
Any & 4 Pseudo-hardware in multiples of 1.5mm square
Character Angles
Any
Italic Characters
Any angle
Polygonal Filling
Yes (Solid and any hatch style)
Segments
Yes
Image Handling
No
Clipping
No
Window/Device Titling
Yes
There are two nomination routines for the SAVDRA metafile depending on the intended use of the picture information.
In general, gSavdra() is used for storing complete drawings. All the current drawing modes are stored and so the same drawing can be reproduced exactly as specified on any other device.
Alternatively, gSavpic() is designed to store picture segments for subsequent use as library objects. A minimum of information is stored in the file, this being the vector part of the segment (i.e. coordinates). It is assumed that qualifiers such as object size and drawing attributes will be provided by the interpreting program.
Device Limits
Unlike most device drivers, the drawing area has its origin at the centre. Therefore setting the drawing limits using the routine gSetDrawingLimits(), defines limits that represent the positive quadrant of the complete drawing area. For example, setting the limits to limit.xpap by limit.ypap defines an effective drawing area of 2*xpap by 2*ypap. The device limits are thus defined to be -xpap, +xpap and -ypap, +ypap.
Savdra Device Limits
The routines gSetWindow2D() or gSetWindow3D() can be used to restrict output to the positive quadrant of the complete drawing area.
Metafile Composition
Multiple drawings in the gSavdra() format metafile can be separated using the gNewDrawing() routine.
Whilst most appropriate in the gSavpic() format, either form can contain multiple segments using the gOpenSeg() and gCloseSeg() routine. Any drawing not contained in a segment is added to segment zero.
File Format
The SAVDRA metafile records all graphical data generated by GINO. The file is written in records of up to 72 characters according to the ANSI printable character set (ie, ASCII codes 32-126).
