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Code Issues 14 Pull Requests 1 Actions Projects Releases 2 Wiki Activity
66 Commits 16 Branches 2 Tags 1.7 MiB
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Author SHA1 Message Date
Aaron Fenyes
c67f37c934 Implement keyboard navigation 2024-09-09 19:41:15 -07:00
Aaron Fenyes
2efc08d6c0 Enable focus for tabs and display 
You can now switch tabs from the keyboard using the usual radio button
interaction.
 2024-09-09 02:15:04 -07:00
Aaron Fenyes
69ab888d5b Simplify control labeling 2024-09-09 00:32:29 -07:00
Aaron Fenyes
0173b63e19 Add picture plane to circles in triangle 2024-09-08 23:43:26 -07:00
Aaron Fenyes
b289d2d4c3 Distinguish odd layer counts in debug mode 
The low-curvature construction admits odd layer counts.
 2024-09-08 23:31:48 -07:00
Aaron Fenyes
163361184b Ray-caster: avoid roundoff error in quadratic equation 2024-09-08 23:00:28 -07:00
Aaron Fenyes
ab830b194e Use circles in triangle as low-curvature construction 
In the process, add a way to build a sphere by offset and curvature.
 2024-09-06 19:01:18 -07:00
Aaron Fenyes
3493a798d1 Add low-curvature construction 
Also add infrastructure for switching between constructions.
 2024-09-04 16:27:28 -07:00
Aaron Fenyes
121934c4c3 Encapsulate construction 2024-09-04 12:58:55 -07:00
Aaron Fenyes
a4236a34df Ray-caster: dim the interior layers of spheres 
This seems to weaken the intersection disk illusion.
 2024-09-02 15:15:18 -07:00
Aaron Fenyes
f148552964 Ray-caster: only draw the top few fragments 
This seems to increase graphics pipe use from 50--60% to 55--65%.
 2024-08-29 15:01:38 -07:00
Aaron Fenyes
6db9f5be6c Enlarge the test construction to six spheres 
In debug mode, assign most of the color scale to even layer counts. Odd
layer counts are topologically prohibited, so we should rarely see bugs
severe enough to produce them.
 2024-08-28 17:14:55 -07:00
Aaron Fenyes
3a721a4cc8 Ray-caster: enlarge the construction data uniforms 
No noticeable effect on GPU performance.
 2024-08-28 16:06:33 -07:00
Aaron Fenyes
8fde202911 Ray-caster: drop unused depth-pair array 
This doesn't affect GPU performance noticeably, so benchmarks before and
after the change should be comparable.
 2024-08-28 15:52:19 -07:00
Aaron Fenyes
4afc82034b Ray-caster: sort fragments while shading 2024-08-28 14:37:29 -07:00
Aaron Fenyes
e80adf831d Ray-caster: correct hit detection 2024-08-28 01:59:46 -07:00
Aaron Fenyes
3d7ee98dd6 Ray-caster: check layer count 
In debug mode, show the layer count instead of the shaded image. This
reveals a bug: testing whether the hit depth is NaN doesn't actually
detect sphere misses, because `sphere_cast` returns -1 rather than NaN
to indicate a miss.
 2024-08-28 01:55:46 -07:00
Aaron Fenyes
c04e29f586 Reduce the frame interval sample frequency 
At the higher frequency we were using earlier, the overhead from
updating the readout contributed significantly to the frame interval.
 2024-08-28 01:47:38 -07:00
Aaron Fenyes
01c2af6615 Rotate and translate construction 
In the process, write code to make updates that depend on the time
between frames.
 2024-08-27 18:39:58 -07:00
Aaron Fenyes
a40a110788 Ray-caster: only draw when the scene is changed 
This is how I typically schedule draw calls in JavaScript applications.
The baseline CPU activity for the display prototype is now in line with
other pages (though perhaps a bit higher), and the profiler shows little
time being spent in draw calls, even when I'm continually moving a
slider. The interface feels pretty responsive overall, although the
sliders seem to be lagging a bit.
 2024-08-27 13:55:08 -07:00
Aaron Fenyes
f62f44b5a7 Optimization: decouple internal and uniform SPHERE_MAX 2024-08-27 00:00:48 -07:00
Aaron Fenyes
ec48592ef1 Ray-caster: add a frame time monitor 
It's time to start optimizing. Frame time is easy to measure, and we can
use it to gauge responsiveness.
 2024-08-26 23:39:51 -07:00
Aaron Fenyes
5e9c5db231 Ray-caster: switch from draw effect to animation loop 
This wastes a lot of CPU time, as explained on lines 253--258 of
`main.rs`, but it's better than the previous version, which could block
graphics updates system-wide for seconds on end.
 2024-08-26 16:06:37 -07:00
Aaron Fenyes
bf140efaf7 Ray-caster: remove hard-coded test construction 2024-08-26 13:51:01 -07:00
Aaron Fenyes
cbec31f5df Ray-caster: pass colors in through uniforms 2024-08-26 13:41:34 -07:00
Aaron Fenyes
b9370ceb41 Ray-caster: label controls 2024-08-26 01:47:53 -07:00
Aaron Fenyes
85db7b9be0 Ray-caster: pass the sphere count as a uniform 
In the process, start exploring array size limits of various kinds.
 2024-08-26 00:58:20 -07:00
Aaron Fenyes
c5fe725b1b Ray-caster: automate getting uniform array locations 2024-08-25 22:22:14 -07:00
Aaron Fenyes
5bf23fa789 Ray-caster: pass spheres in through uniforms 
Keep the hard-coded spheres for comparison.
 2024-08-25 21:40:59 -07:00
Aaron Fenyes
206a2df480 Ray-caster: add a third test sphere 
This helps confirm that the generalized depth-sorting is working.
 2024-08-25 16:41:31 -07:00
Aaron Fenyes
c18cac642b Ray-caster: generalize depth sorting 
Switch from a hard-coded sorting network for four fragments to an
insertion sort, which should work for any number of fragments.
 2024-08-25 00:47:36 -07:00
Aaron Fenyes
8798683d25 Ray-caster: store sphere data in arrays 
This is a first step toward general depth sorting.
 2024-08-25 00:00:28 -07:00
Aaron Fenyes
b9587872d3 Ray-caster: don't bother clearing the screen 
The ray-caster triangles cover the whole viewport, so they'll completely
overdraw the previous frame.
 2024-08-24 11:31:22 -07:00
Aaron Fenyes
766d56027c Ray-caster: move shaders to separate files 
This properly reflects the modularity of the code, and it simplifies
indentation and syntax highlighting.
 2024-08-24 11:27:19 -07:00
Aaron Fenyes
25da6ca062 Ray-caster: adjust opacity of highlighting 2024-08-24 11:08:31 -07:00
Aaron Fenyes
e3df765f16 Ray-caster: highlight intersections and cusps 2024-08-24 01:38:06 -07:00
Aaron Fenyes
f1029b3102 Ray-caster: map output into sRGB space 
Change the base color and default opacity to keep the picture looking
broadly the same.
 2024-08-24 01:05:19 -07:00
Aaron Fenyes
87763fc458 Ray-caster: tidy up sphere shading 2024-08-24 00:29:11 -07:00
Aaron Fenyes
2ef0fdd3e2 Ray-cast two spheres, with hard-coded depth sorting 2024-08-23 12:56:54 -07:00
Aaron Fenyes
d2cecf69db Ray-cast a translucent sphere 2024-08-23 00:16:41 -07:00
Aaron Fenyes
c78a041dc7 Write a ray-caster for inversive spheres 2024-08-22 22:08:34 -07:00
Aaron Fenyes
f274119da6 Enable depth testing 
To get the right order, flip the sign of the `z` component in the output
of the projection map.
 2024-08-22 18:17:01 -07:00
Aaron Fenyes
1fbeb23194 Add rotation control 
In the process, find and correct an error in the --+ vertex, which was
miswritten as ---.
 2024-08-22 00:04:58 -07:00
Aaron Fenyes
80b210e667 Make the projection map a uniform 2024-08-21 23:07:14 -07:00
Aaron Fenyes
81f9b8e040 Find vertex attribute indices in advance 2024-08-21 22:36:56 -07:00
Aaron Fenyes
5885189b04 Draw a mesh in perspective, and in color 2024-08-21 17:31:17 -07:00
Aaron Fenyes
fd3cbae1b4 Get a WebGL canvas working in Sycamore 2024-08-21 13:01:33 -07:00
Glen Whitney
c48d685ad6 doc: Extend comments on coordinatization; add a theory.md notes file 2023-11-07 17:06:19 -08:00
Glen Whitney
15159302c3 doc: Add Aaron's observations on inversive coords 2023-11-06 11:47:53 -08:00
Glen Whitney
daed435826 doc: Add a few implementation goals to README 2023-11-01 13:08:20 -07:00