PPT98: Vector Graphics Used as Textures Appear Large on Screen
Article ID: 188525
Article Last Modified on 10/3/2002
APPLIES TO
- Microsoft PowerPoint 98 for Macintosh
This article was previously published under Q188525
SYMPTOMS
If you use a vector-based graphic as a texture, and apply that texture to a
slide background or to a PowerPoint drawing object, the texture appears
very large on your screen. When you print the slide, the texture prints at
a more appropriate size.
CAUSE
PowerPoint converts a vector-based graphic internally to a bitmap graphic.
To ensure that the graphic prints well, PowerPoint converts the vector-
based graphic to a 576 dots per inch (dpi) bitmap. For example, PowerPoint
converts a 1-inch x 1-inch vector-based graphic to a 576-pixel x 576-pixel
bitmap. When PowerPoint displays the graphic, one pixel of the graphic
appears the same as one screen pixel. A 576-pixel square graphic covers
most of the screen if your display resolution is 640 x 480 pixels.
When you print the slide, the texture also prints at 576 dpi. Therefore,
if you print to a 600 dpi printer, one repeat of the texture per inch is
printed.
RESOLUTION
As a rule of thumb, a graphic makes a good texture if it measures from
approximately 150 pixels square to about 250 pixels square. If you have a
program that converts vector-based graphics to bitmap graphics, use it to
convert the vector-based graphic to a bitmap graphic containing less than
250 pixels x 250 pixels. When you use that bitmap graphic as a texture, it
will appear in a more appropriate size on your screen.
As an alternative, you can use the program to shrink the vector-based
graphic so that it is less than about one-half inch square and save it
under a different file name. Then, if you use that picture as a texture it
will appear in a more appropriate size on your screen.
Additional query words: 8.00 ppt8 huge large immense truncated meta- file
Keywords: kbinfo kbgraphic KB188525