PlasmaWB is an interactive and autonomous plasma trail effect for AmigaOS
Workbench and Picasso96 RTG screens.
It opens a resizable window on a public screen and renders a colourful,
CPU-generated glowing trail. The trail can follow the mouse or use one of
five evolving autonomous paths: Lissajous, Rose, Spiro, Orbit and Harmono.
Version 1.49 ships two binaries built from the same C source:
PlasmaWB 68k (68020+ with FPU)
PlasmaWB.ppc PowerPC (CyberStorm/Blizzard PPC with WarpOS)
The animation is time-normalized, so faster machines render more frames of
the same motion. The final update uses a Picasso96 friend bitmap when
possible, allowing a board-local blit, with packed and true-colour fallback
paths.
Controls:
Mouse move Draw the trail when autonomous mode is Off
A Select the next autonomous mode
Mouse wheel Adjust autonomous speed while a mode is active
Hold MMB + move Adjust autonomous speed vertically
Hold LMB Temporarily use tighter trail spread
Space Toggle tighter trail spread
F Toggle FPS display/HUD where available
R Clear and reseed at the current control position
Enter Toggle full screen
Esc Quit windowed mode or leave full screen
Q Quit
RMB Leave full screen
Icon ToolTypes and equivalent Shell options:
FullscreenMode=<DisplayID>
StartFullScreen=On|Off
ShowFPS=On|Off
AutonomousMode=Off|Lissajous|Rose|Spiro|Orbit|Harmono
AutonomousSpeed=25..400
TrailWidth=Tight|Thin|Normal|Bold|Huge
Fade=Fast|Normal|Slow
FullscreenMode accepts decimal, 0x hexadecimal or Amiga-style $ hexadecimal
DisplayIDs. It selects the mode used by Enter and Global/Full screen but does
not itself start full screen; use StartFullScreen=On for that. Option names
and named values are case-insensitive.
Installation:
Copy the PlasmaWB drawer anywhere. Start the 68k binary from its icon or
Shell. PlasmaWB.ppc intentionally has no icon and is started from Shell.
PlasmaWB uses a 102400-byte stack cookie and should have a matching icon
stack. PlasmaWB.ppc switches to its own internal 128 KB PPC stack.
Source code:
The C source and dual-target GNU Makefile are included. README.txt contains
full usage, ToolType, command-line and cross-compilation instructions.
Notes:
PlasmaWB is intended for AmigaOS 3.x systems with Picasso96. The gradients
look best in 24-bit or 32-bit modes; 16-bit modes show some banding. A
screenshot is included in the archive.
History:
1.00 First public release.
1.02 Added a Picasso96 off-screen bitmap presentation path. When the
bitmap is placed in board memory, the final window update can use
the graphics board blitter. The CPU-rendered plasma effect itself
is unchanged.
1.10 The same source now builds both the 68k and WarpOS/PPC binaries.
The animation is time-normalized, the trail rasterizer is faster,
and the WarpOS binary manages its own PPC stack.
1.21 Added an autonomous mode and an A-key mode cycle: Lissajous, Rose,
Spiro, Orbit, Harmono and Off. Added wheel and middle-button drag
speed control, mode names and speed in the title, A-key repeat
suppression, Intuition V47 extended-wheel input with a legacy
RAWKEY fallback, and corrected the non-Lissajous motion scaling.
1.49 Added Project, Global and Options menus; icon ToolTypes and matching
command-line options for display, FPS, autonomous and trail settings;
and full-screen operation with mode selection, Enter toggle, restored
window geometry, pointer auto-hide and an optional status HUD.
|
aminet net>