NOTE: This program uses the routine from
PICLOADA (in this issue). PICLOADA must therefore be merged with
this listing by LISTing lines 10 to 630 of PICLOADA to disk with
LIST "D:<filename>",10,630 and then, after having LOADed Attributes,
using ENTER "D:<filename>".
This program takes Atari Artist pictures and allows
each colour register to be changed (or attributed) on every scan
line thus producing a picture with many more colours than normally
available. The program is controlled with the Touch Tablet.
When the program is RUN, you will be given a list
of available commands and prompted for a picture filename. Enter
the filename and the picture will be loaded. By using the Touch
Tablet in port #0 you can now control a cross-hair cursor which
you may move about the screen. Move the cursor so that it is on
a certain colour and hold down any Touch Tablet button. By moving
the stylus around this colour is varied from the position of the
cursor to the bottom of the screen. When the desired colour is displayed,
release the button and the colour will remain set.
Note, as the colour is changed from the cursor position
downwards, a top-down approach should be taken when colouring pictures.
There are five functions which are accessed by the
key presses indicated.
[L] ...Load attributes
[S] ...Save attributes
[R] ...Random fill
[B] ...rainBow fill
[N] ...New picture
Load and Save store and recall the attributes to
disk with the picture filename plus the extender .ATB.
The two fill commands affect the next colour selected
by replacing it with either a random or rainbow pattern. New restarts
the program so that a new picture can be worked on (don't forget
to save any previous work first).
Finally note that the cross-hair cursor is a player
graphic controlled by strings and it is important that the strings
are DIMensioned in the correct order. If you have any problems LIST
the program out to disk, re-boot and ENTER it to clear the variable