PolarPaint small v1.0 (r55) by Anbjørn Myren (anbjorn.myren@gmail.com)
(this is the same as the non-small version, just resized to a smaller drawing
area and program window to make it work on less resqources)
This is an experimental Paint program made with Hollywood.
Requirements:
A fast computer with RTG, minimum 800x600x16 (Program window is 730x570)
Minimum 32MB of free ram, 64MB or more recommended
More memory or diskspace might be desirable (read below for memory notes)
codesets.library 6.22+ and reqtools.library v39+
Versions for 68k, AmigaOS4, MorphOS and AROSx86 available
Changes v1.0
r55:
Transparent mix now can set transparency for both workspaces seperately
r54:
Fix: Drawing Rectangles, Ellipses and Lines when foreground and background color is the same was not working.
Fix: Removed duplicate undos'
White CLS, If pen is White, then change pen to Black.
Drawing coordinates adjusted (near edges)
Deselect active brush capture when click to the left of the drawing area
r53:
Dedicated settings icons removed, now use RMB to enter settings.
Tool icons with settings are marked '!'
Gradient fill available for Rectangles and Ellipses, and also an option to
draw filled shapes.
ReplaceColor - Replaces all instances of the selected color
Text tool, with various options and effects
Minor adjustment to transparency settings
RMB can now draw with transparency
Multi Pen, draw with 2 or 4 pens to create syncronized pattern
Black CLS, If pen is Black, then change pen to White.
Changed how the FloodFill with threshold is processed. If threshold is set
below 30 it will process the whole image while updating it. If threshold is
30 or higher, a user selectable max area will be processed for each operation
This due to speed and memory concerns.
-Probably other minor changes I forgot.
Functions in brief
The painting area is 640x480. Up to 8 Workspaces can be used for separate
drawings.
There is an Undo/Redo funtion. By default this is set to maximum 10 levels,
but can be set as high as 100. Each Workspace have its own Undo buffer, in
theory there might up to 800 undo's.
At program start Workplace 1 will be active. Click on one of the numbered
Workspace Tab's to use another workspace.
Memory notes
Each brush initiated will take about 1MB of memory. Opening a new workspace
consumes 1 MB per Workspace (unless diskbuffer is used).
The Undo / Redo system will also require memory since each Undo is a full
brush stored in memory.
If you set the Undo buffer to max (100) and use all 8 Workspaces you will in
theory have 800 undo operations available. Needless to say this will require
massive amounts of RAM available.
Diskbuffering
As a workaround for the memory issues mentioned above I made an optional
setting that allows you to enable DiskBuffering. This means that all Undo
buffering goes to your hardrive instead of using RAM. Also when opening a
new workspace the previous workspace is saved to disk and freed from memory.
By default these files are stored as PNG images which means they only take a
fraction of the space compared to the memory they would need.
The downside is that the undo/redo will be slower, because it needs to load
the files from disk and convert the png files into brush data.
If you suspect you might get short on memory, run the program first time and
press the Quit button, at the requestor select to Enable DiskBuffer before
quitting. Next time you launch the program diskbuffer will be enabled.
When DiskBuffer is active you will be asked on Exit if you want to keep the
buffer files. If you do so, they will be loaded automaticly on next start and
you can keep on working where you left off.
Help
There is an Information icon that will display some basic information about
the program, and while the icon is highlighted (info mode) the user can click
any icon to get some pop-up information about each button.
Click the info icon again to exit information mode.
Flood Fill
Regular floodfill is an in-built Hollywood command that works well in most
cases. But if you want to floodfill an area that has gradients of colors you
might experience that not all areas are filled as expected. An image saved
with JPEG compression will most likely have this issue.
To overcome this there is a custom fill command that uses a threshold setting
to determine how colors are filled. By default threshold is set to 0 and then
the in-built fill command us used. Setting threshold above 0 will make use of
the custom fill operation. The setting is quite sensitive so depending on
your image there could be a huge difference between 0 and 1.
You can use decimal values, eg. 0.01 or 0.5 so just try until satisfied.
The custom fill operation is much slower than the regular fill, specially on
low end computers. The way it works it will read the color form pixel by
pixel and create a table of pixels to fill.
For lower Threshold values it will process up to 1% of the image area before
filling, then process the next bacth until done.
For Threshold values 30% and higher the processing is much slower, so it
will then process only a user selectable area size all in one go.
Processing with high threshold will also consume memory.
As a general rule you need a system with 64MB RAM to process
sizes up to 5%, 128MB up to 50% and so on.
Use ESC to interupt an ongoing floodfill operation.
Transparency
There are two modes for transparency available. Default and Instant. The
default mode with process your whole line before applying transparency,
making it more smooth. The line will appear solid while the mouse is pressed.
The Instant mode will apply transparence as you draw, but will leave "dots"
along the line. This is because you really is drawing many short connecting
lines and the "dots" appear where these lines overlap.
For Lines, Boxes and Circles transparency is only available in Default mode.
Notes:
The icon is from the aminet archive pix/gicon/glowcollection.lha
|
aminet net>