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- MINI-BITMAP CONVERTER
- by Dave Moorman
-
-
- Now you can take your Doodles and
- High-Resolution SHP (LOADSTAR)
- graphics and convert them to our new
- 128x96 pixel Mini-Bitmap format. And
- why, you may well ask, would you want
- Mini-Bitmaps?
-
- * Compact
- * Fast to Load and Display
- * Text-Screen Based
- * The KEY to LOADSTAR Movies
-
- A Mini-Bitmap uses only 2048 bytes
- of memory (since they are actually
- custom fonts). The quasi-animation in
- The Zucchini Song during the "I love/
- hate" chorus uses two instances of a
- Mini-Bitmap. With the SCREEN ML module
- (also on this issue), you can quickly
- and easily put Mini-Bitmaps in your
- programs.
-
-
- GETTING STARTED
- ---------------
-
- You first need a disk with high-
- resolution, monochrome graphics files,
- in either Doodle or SHP format. Boot
- up Mini-Bitmap Converter and have your
- work disk ready to insert or in
- another drive. Each function of this
- program is called by a nice big button
- you can click with the mouse, cursor
- and <RETURN>, or hit the underlined
- hotkey.
-
-
- DISK <D>
- ----
-
- With Disk, you can choose
- the drive that your graphics are on.
- Pretty elementary, eh, Watson?
-
-
- GET SHP <H>
- -------
-
- Displays a scrolling menu of all
- SHP and Doodle (.DDL) files on your
- disk. Click one to load.
-
-
- GET MBP <B>
- -------
-
- Displays a scrolling menu of all
- MBP (Mini-BitMap) files on your disk.
- Click one to load.
-
-
- SHP > MBP <S>
- ---------
-
- Draws a Mini-Bitmap from your
- full-sized graphic. The area used on
- the large graphic is the 256x192 pixel
- area in the middle of the screen.
-
- You will need to make a couple of
- decisions first. The program will look
- at either the Even columns or the Odd
- columns, or will OR the two together,
- or will AND the two together.
- Likewise, you can choose Even, Odd,
- ORed, or ANDed rows.
-
- For instance, if your large
- graphic has
-
- 23
-
- 6 .*
- 7 ..
-
- (where * is a set pixel), then if the
- Column and Row are both set to Even,
- no pixel will be drawn in the Mini. If
- both Column and Row are Odd, no pixel
- will be set. ORing will set a pixel if
- Even OR Odd Column OR Row has a pixel.
-
- However, some large bitmaps have
- the pixels "inverted." You will
- probably not be able to see this,
- since foreground and background colors
- can be set on a high-res graphic. But
- with Mini-Bitmap, it makes a
- difference. Here is another example:
-
- 23
-
- 6 *.
- 7 **
-
- In this case, the clear pixel (.)
- is the one you want to be sure to have
- on your Mini. So use AND for both
- Column and Row.
-
- We give you all these combinations
- (16 in all) just because we like to
- make life complicated! By the way,
- your last selection is saved on your
- drive (assuming you are using two
- drives, with the program in one and
- the work disk in another), so the
- combination will be there the next
- time.
-
- Once your selections are made,
- press <Space>. If you have Turbo or
- Warp speed, use it. This is a DotBASIC
- program, and not exactly fast at
- handling 12288 pixels. You will see
- the mouse arrow moving across the
- Mini-Bitmap screen, "drawing" your
- picture.
-
-
- MBP > SHP <M>
- ---------
-
- Just to be complete, this program
- lets you make a Doodle graphic from a
- Mini-Bitmap. The idea is that one
- might want to edit the graphic with
- Doodle, then reconvert it to MBP.
-
- No questions to answer here. Each
- pixel on the Mini-Bitmap draws a four-
- pixel block on the Doodle.
-
-
- VIEW MBP <V>
- --------
-
- Take a look at the Mini-Bitmap
- currently in memory.
-
-
- VIEW SHP <I>
- --------
-
- Take a look at the large graphic
- currently in memory.
-
-
- SAVE <A>
- ----
-
- If a either form of graphic is in
- memory, you can save it to your disk.
- This program only saves Doodle format
- full-size high-res graphics, and -- of
- course -- Mini-Bitmaps (MBP's).
-
-
- EXIT <E>
- ----
-
- Answer <Y> or click "Yes" and
- you're outta here!
-
-
- PLAYING AROUND
- --------------
-
- We have put a couple of SHPs on
- this issue for you to play with. You
- will certainly want to use a copy
- program to move all the files from
- "B.CONVERT" through "T.CONVERT" to a
- work disk first.
-
- The graphics included are rather
- detailed, pixelated Ascher prints --
- which give you very different results
- when you choose Even/Odd/ORed/AND
- conversions. See what you can do with
- it. Next month (Lord willing and the
- creek don't rise), we will have a way
- to combine MBPs into LOADSTAR MoVie
- files, like Zoetrope and Train. Then
- we will certainly be ready for some
- really fascinating stuff.
-
- Picture Morphing?
-
- There is nothing computational
- that we cannot at least model!
-
- DMM
-
-
-