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
c48d685ad6
doc: Extend comments on coordinatization; add a theory.md notes file
2023-11-07 17:06:19 -08:00
15159302c3
doc: Add Aaron's observations on inversive coords
2023-11-06 11:47:53 -08:00
daed435826
doc: Add a few implementation goals to README
2023-11-01 13:08:20 -07:00
2cfcfacb5a
doc: Add new notes directory with design notes
2023-11-01 12:58:08 -07:00
Glen Whitney
fce8be5b56
Adjust lighting and camera for decent initial rendering of polyhedra
...
Note that the version of three.js also incidentally bumped, since it's set
to take the latest
2019-12-31 07:20:33 -08:00
9c2038e3c9
Enable mouse rotate, pan, and zoom with TrackballControls
2019-12-12 14:04:11 -05:00
c7f2feab1f
First pass at coordinate axes
2019-12-12 02:44:33 -05:00
413a8b5b81
Switch to good old make to reduce redundancies in build
2019-12-12 00:33:59 -05:00
