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* .Kartik K. Agaram2021-07-121-28/+28
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* .Kartik K. Agaram2021-07-111-2/+2
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* .Kartik K. Agaram2021-07-111-5/+2
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* forget HSL conversion for now, stick to RGBKartik K. Agaram2021-07-112-13/+50
| | | | | It looks like seeking the nearest neighbor in HSL space leads to more saturated colors.
* .Kartik K. Agaram2021-07-111-42/+42
| | | | Inline a helper.
* .Kartik K. Agaram2021-07-111-33/+39
| | | | Extract a helper.
* .Kartik K. Agaram2021-07-111-32/+30
| | | | Inline an unnecessary block.
* .Kartik K. Agaram2021-07-111-20/+20
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* .Kartik K. Agaram2021-07-111-1/+11
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* dither 256-level greyscale to 8-level greyscaleKartik K. Agaram2021-07-112-2/+212
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* .Kartik K. Agaram2021-07-101-24/+24
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* .Kartik K. Agaram2021-07-101-3/+3
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* .Kartik K. Agaram2021-07-104-23/+3
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* .Kartik K. Agaram2021-07-101-88/+47
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* increase precision for dithering computationsKartik K. Agaram2021-07-101-3/+8
| | | | Now we get a perfect checkerboard pattern.
* .Kartik K. Agaram2021-07-102-34/+106
| | | | https://merveilles.town/@akkartik/106559551043772522
* .Kartik K. Agaram2021-07-101-4/+4
| | | | https://merveilles.town/@akkartik/106557664535993377
* dithering greyscale using black/whiteKartik K. Agaram2021-07-105-24/+293
| | | | Starting to look right.
* reorder a few functionsKartik K. Agaram2021-07-081-126/+128
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* .Kartik K. Agaram2021-07-081-0/+12
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* scaling ppm imagesKartik K. Agaram2021-07-081-26/+76
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* scaling pgm imagesKartik K. Agaram2021-07-081-21/+65
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* .Kartik K. Agaram2021-07-081-3/+2
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* .Kartik K. Agaram2021-07-081-3/+3
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* .Kartik K. Agaram2021-07-081-4/+4
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* .Kartik K. Agaram2021-07-081-1/+1
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* scaling pbm imagesKartik K. Agaram2021-07-081-30/+67
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* .Kartik K. Agaram2021-07-081-18/+18
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* better ppm colorsKartik K. Agaram2021-07-081-7/+31
| | | | I had some logic to make hue distance cylindrical, but it wasn't right.
* better greyscaleKartik K. Agaram2021-07-081-2/+8
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* .Kartik K. Agaram2021-07-081-14/+14
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* .Kartik K. Agaram2021-07-081-1/+0
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* ppm colors are weird, thoughKartik K. Agaram2021-07-084-1/+16404
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* ppm supportKartik K. Agaram2021-07-071-3/+32
| | | | Typo in commit fe3cbcd77: it only rendered pbm/pgm.
* instructions for Universal CtagsKartik K. Agaram2021-07-072-3/+4
| | | | Thanks Sumeet Agarwal for raising this issue.
* .Kartik K. Agaram2021-07-071-9/+9
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* render ppm/pgmKartik K. Agaram2021-07-071-7/+106
| | | | Looks pretty bad compressing 256 shades of grey to 8.
* load ppm/pgm/ppm on demandKartik K. Agaram2021-07-071-8/+113
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* initial image renderingKartik K. Agaram2021-07-075-0/+6163
| | | | | | Supports just some ASCII formats: https://en.wikipedia.org/wiki/Netpbm Colors are messed up. That's next.
* .Kartik K. Agaram2021-07-061-8/+18
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* .Kartik K. Agaram2021-07-062-44/+44
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* nearest h/s/l color by a euclidean metricKartik K. Agaram2021-07-061-0/+51
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* primitives for double-bufferingKartik K. Agaram2021-07-051-4/+152
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* shell: fix clear on screensKartik K. Agaram2021-07-051-1/+1
| | | | | | | Broken since commit c95648c96 on Jul 3. Unclear what test to write for this. Should clear-stream check for NULL? Should apply-clear?
* expose Mu implementation of 'bezier'Kartik K. Agaram2021-07-051-1/+256
| | | | Still no support for acute-angled control points.
* replace 'circle' with Mu implementationKartik K. Agaram2021-07-052-19/+161
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* replace 'vline' with Mu implementationKartik K. Agaram2021-07-052-6/+162
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* replace 'hline' with Mu implementationKartik K. Agaram2021-07-052-9/+165
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* replace 'line' with Mu implementationKartik K. Agaram2021-07-052-32/+196
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* grow code region yet againKartik K. Agaram2021-07-053-2/+16
| | | | We need a cleaner way to do this.
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-04 19:36:24 +0000