Device Nominations

Nomination Routine

Description of Device

A

gSwf(framespeed)

Adobe Flash SWF format file

Device Characteristics

A

Maximum Width

25600 pixels

Maximum Height

20480 pixels

Default X Dimension

1280 pixels

Default Y Dimension

1024 pixels

Colours / Pens

1023

Colour Palette

Dynamic

Broken Linestyles

No

Drawing Modes

No

Thick Lines

Any Thickness

Line Ends

No

Arcs

Yes

Symbols

No

Fonts

4

Character Sizes

Any size

Character Angles

Horizontal only

Italic Characters

No

Polygonal Filling

Up to 512 Vertices - Solid only

Segments

No

Image Handling

No

Clipping

No

Window/Device Titling

No

SWF Details

The GINO SWF metafile driver produces Adobe Flash v5 vector-format files for displaying in a web browser.  The browser will need a plug-in from Adobe if one does not already exist on the system.  Files can consist of multi-frames for producing animated pictures or movies, or can consist of just one frame.  Refer to the supplied example programs for an example HTML file that displays a flash movie.

Frame Speed

The number of frames displayed per second is controlled by the parameter in the device nomination routine.  If this is set to < 1, then the speed will default to 35 frames/second.

New Frame

A new frame is created by calling the routine gNewDrawing(), however if graphics elements are required to be persistent across all frames, start the frame sequence with a call to gFlushGraphics().e.g:

Draw Circle            ! This will get shown during the whole movie
call gFlushGraphics
Draw Box               ! This will get shown in frame 1 only
call gNewDrawing
Draw Triangle          ! This will get shown in frame 2 only
call gNewDrawing

i.e.  The number of calls to gNewDrawing() determines the number of frames in the movie.

Background Colour

The background colour of the drawing can be set by calling gDefineRGB(0,...) and must be called before any drawing routines have been called.  Note also that if the HTML code displaying the flash movie contains:

<PARAM NAME>=wmode VALUE=transparent>

then the GINO background colour will be ignored.

Text

Four hardware fonts are available by using the routine gSetCharFontName(fontname) where fontname can be 'Verdana', '_sans', '_serif' or '_typewriter'.  This will use browser fonts and the text can only be horizontal.

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