3ee70401e3
.
2021-07-08 16:12:27 -07:00
019fb0babc
scaling pbm images
2021-07-08 11:00:51 -07:00
b628bbd686
.
2021-07-08 09:26:55 -07:00
afda7d59c0
better ppm colors
...
I had some logic to make hue distance cylindrical, but it wasn't right.
2021-07-08 01:13:38 -07:00
0f29e61238
better greyscale
2021-07-08 00:26:58 -07:00
9c70f7c643
.
2021-07-08 00:21:01 -07:00
359f55d893
.
2021-07-08 00:13:12 -07:00
d1482a9e89
ppm colors are weird, though
2021-07-08 00:12:31 -07:00
91af9ccf2c
ppm support
...
Typo in commit fe3cbcd77: it only rendered pbm/pgm.
2021-07-07 19:43:56 -07:00
d73c84e299
instructions for Universal Ctags
...
Thanks Sumeet Agarwal for raising this issue.
2021-07-07 19:34:54 -07:00
d78a45340c
.
2021-07-07 19:24:12 -07:00
fe3cbcd778
render ppm/pgm
...
Looks pretty bad compressing 256 shades of grey to 8.
2021-07-07 09:57:18 -07:00
a9353ea327
load ppm/pgm/ppm on demand
2021-07-07 08:35:17 -07:00
ef73cb78f1
initial image rendering
...
Supports just some ASCII formats: https://en.wikipedia.org/wiki/Netpbm
Colors are messed up. That's next.
2021-07-07 07:13:16 -07:00
2d3fe4e940
.
2021-07-06 21:35:22 -07:00
c31c02f0d1
.
2021-07-06 08:39:46 -07:00
d84d17d6f5
nearest h/s/l color by a euclidean metric
2021-07-06 07:01:14 -07:00
cbf22e7ab2
primitives for double-buffering
...
I thought I needed these for this bouncing-ball demo:
def (bounce screen)
with (w (width screen)
h (height screen)
cx 16
cy 16
dx 12
dy 19)
while 1
clear screen
ring screen cx cy 16 3 5
cx += dx
cy += dy
when (or (cx > w) (cx < 0))
set dx 0-dx
when (or (cy > h) (cy < 0))
set dy 0-dy
for _ 0 (< _ 100) ++_ # delay
No matter how I adjusted the delay I couldn't get rid of the jitter. So
I built a double-buffered version:
(bounce2 . [def (bounce2 screen)
with (w (width screen)
h (height screen)
cx 16
cy 16
dx 12
dy 19
screen2 (new_screen (columns screen)
(lines screen)))
while 1
clear screen2
ring screen2 cx cy 16 3 5
cx += dx
cy += dy
when (or (cx > w) (cx < 0))
set dx 0-dx
when (or (cy > h) (cy < 0))
set dy 0-dy
blit screen2 screen
for _ 0 (< _ 100) ++_]) # delay
But it didn't make a difference! Turns out nothing will help you when
successive frames are too far apart. This is the correct tweak to
`bounce`:
- dx 12
- dy 19)
+ dx 1
+ dy (/ 19 12))
Still, we'll keep double-buffering around for the future.
2021-07-05 23:18:30 -07:00
468b0d979f
shell: fix clear on screens
...
Broken since commit c95648c96
2021-07-05 22:06:37 -07:00
5d614af955
expose Mu implementation of 'bezier'
...
Still no support for acute-angled control points.
2021-07-05 18:31:07 -07:00
493aabf79a
replace 'circle' with Mu implementation
2021-07-05 18:21:02 -07:00
c7bedaf49b
replace 'vline' with Mu implementation
2021-07-05 18:12:07 -07:00
5d8a858a6f
replace 'hline' with Mu implementation
2021-07-05 18:08:40 -07:00
0b07a43367
replace 'line' with Mu implementation
2021-07-05 18:08:33 -07:00
f32caac6df
grow code region yet again
...
We need a cleaner way to do this.
2021-07-05 17:53:57 -07:00
ac1d702cdc
.
2021-07-05 17:36:25 -07:00
1ac1fe1fff
.
2021-07-05 17:35:38 -07:00
c95648c960
reading from streams
...
The Mu shell has no string literals, only streams. No random access,
only sequential access. But I've been playing fast and loose with its
read pointer until now. Hopefully things are cleaned up now.
2021-07-03 18:27:01 -07:00
7ced4e44dd
alists
2021-07-03 16:28:15 -07:00
d986404ff0
new primitive: cons?
2021-07-03 16:16:03 -07:00
810d9a26f5
.
2021-07-03 10:57:36 -07:00
a745749382
.
2021-07-03 10:44:05 -07:00
bd538804db
reorg primitives on screen
2021-07-02 19:31:15 -07:00
c8fb6d6aca
clean up final abort in macroexpand
2021-06-30 20:43:34 -07:00
49d60aa575
delete a known issue
...
I can't reproduce the issue with the keyboard handler anymore :/
2021-06-30 09:44:20 -07:00
c76679dbff
more general timer interface
2021-06-29 22:46:26 -07:00
1083f2a400
.
2021-06-29 22:37:00 -07:00
eba4e7af24
move timer handler to boot.subx
2021-06-29 22:26:08 -07:00
3df5232ca4
timer and keyboard handlers working together
2021-06-29 22:12:32 -07:00
db5f7c26a5
.
2021-06-29 22:05:00 -07:00
d418bc0c97
.
2021-06-29 21:58:46 -07:00
cd411f0901
timer working in presence of null keyboard handler
2021-06-29 21:55:37 -07:00
069a8df45c
.
2021-06-29 21:54:22 -07:00
5616691621
ooh, timer works fine in isolation
...
Acknowledging the interrupt is necessary.
2021-06-29 21:53:36 -07:00
f25b8e6e41
poking at the broken timer interrupt handler again
2021-06-29 21:37:06 -07:00
f9888786c3
.
2021-06-27 08:44:34 -07:00
0237be29aa
.
2021-06-27 08:32:44 -07:00
1b82006eae
.
2021-06-27 08:25:49 -07:00
efecaa99d5
simplify Qemu instructions
...
Turns out we don't need a special case for KVM.
https://qemu.readthedocs.io/en/latest/system/invocation.html
2021-06-27 08:05:18 -07:00
c7e1fed2b9
.
2021-06-27 07:32:08 -07:00
Kartik K. Agaram