hashirama/metabrush
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206 commits 3 branches 0 tags 1.9 MiB
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159 commits

Author SHA1 Message Date
sheaf 3886dca483 improvements to draw anchor 2024-09-28 12:10:36 +02:00
sheaf 3d36b39541 fix brush rotation widget 2024-09-28 11:17:33 +02:00
sheaf a41c6235ae anchor position is not static 2024-09-28 03:12:23 +02:00
sheaf 66490b87aa fix draw anchor curve indexing 2024-09-28 01:32:03 +02:00
sheaf 264e04555b add header to warning dialog 2024-09-28 00:38:32 +02:00
sheaf 23cc439ff2 update list model upon undo/redo 2024-09-27 23:53:33 +02:00
sheaf 24f182feec add stroke layer view 2024-09-27 23:36:33 +02:00
sheaf 0eb0724dde Refactors in preparation for stroke hierarchy 2024-09-27 17:21:24 +02:00
sheaf e2e4ae6bfe UI: use GTK Window instead of MessageDialog 2024-09-07 11:28:07 +02:00
sheaf fc2f25cfa6 UI: use GTK4 FileDialog API 2024-09-06 18:48:04 +02:00
sheaf 9ff25a25aa cleanups 2024-08-29 01:46:50 +02:00
sheaf 7bb28f8c96 brush widget UI: don't allow 0 width or height 2024-05-28 10:36:26 +02:00
sheaf 56939ce01a GTK 4.14 compatibility 2024-05-28 10:24:47 +02:00
sheaf 300fbf92c0 fixes to brush widget UI 2024-05-25 17:04:08 +02:00
sheaf 1ec2af6dcc WIP: add brush widget UI 2024-05-21 19:40:22 +02:00
sheaf 63b9703faf UI tweaks 2024-04-25 21:53:53 +02:00
sheaf c89fba7fd2 Improve specialisation + add degree computation 2024-04-25 21:53:27 +02:00
sheaf 1338d7ddbe Improve intervallic rotation computations 
This commit bakes in a certain kind of representation for brush strokes:

  c(t,s) = p(t) + R(theta(t)) b(t,s)

This representation allows us to cancel out some rotation terms when
computing the envelope equation, improving the efficiency of the
cusp-finding methods.
 2024-04-20 18:28:41 +02:00
sheaf 55470d1f0e make cusp-finding algorithm choice more configurable 2024-04-03 18:46:08 +02:00
sheaf 2289468a84 Fixes and restructuring 2024-02-28 17:20:34 +01:00
sheaf d1b3765335 Split out benchmark for cusp finding 2024-02-23 17:03:28 +01:00
sheaf b70f7ba133 Add mechanisms to log envelope equation data 2024-02-19 16:46:09 +01:00
sheaf 6b658acedd Restructure project & update bounds 2024-02-17 13:58:40 +01:00
sheaf 1368825103 improve outline computation using divMod' 2024-01-08 11:31:18 +01:00
sheaf f10fbd9810 remove traces & minor cleanups 2024-01-06 18:18:14 +01:00
sheaf 326487942e fix orientation computation 2023-08-30 17:40:47 +02:00
sheaf 92efc4127c add teardrop shaped brush 2023-07-15 16:40:59 +02:00
sheaf 7eb16b4782 tiny build fixes 2023-06-15 00:39:03 +02:00
sheaf 96aa38b3c3 improve rotations in interval arithmetic 
Computing a rotation in interval arithmetic can lose tightness.
Instead of computing

   a cos phi + b sin phi

which doesn't account for the difference in phase in the two sinusoids,
it is better to use

  sqrt (a² + b²) * cos ( phi - atan2(a,b) )

which correctly estimates the maximum amplitude of the sum to be
sqrt(a²+b²) instead of abs(a) + abs(b).

This seems to worsen the performance of the interval Newton method
at the moment, possibly due to the complexity of the new formula,
which involves computing atan(b/a). Further investigation is needed.
 2023-05-14 21:38:25 +02:00
sheaf 50d99e1e4b improve intervallic Bézier evaluation 
Now we evaluate Bézier curves using an AABB computation. This results
in tighter intervals, which means that the cusp-finding algorithm
is better behaved.
 2023-04-25 23:07:18 +02:00
sheaf 7db3cbef33 more work into observability 2023-03-13 22:09:15 +01:00
sheaf 52420a1169 experiment: FMA backend for interval arithmetic 
also includes the start of a way to observe which equations
are being solved, which should help with improving the performance of
the interval Newton method
 2023-03-12 19:15:58 +01:00
sheaf 4cd11fa02f add export to SVG functionality 2023-02-03 14:16:57 +01:00
sheaf 8ac22b4738 some optimisations 2023-01-29 04:03:36 +01:00
sheaf 4174d9b5b6 rejigging 2023-01-28 01:26:47 +01:00
sheaf 1ae84fec97 precondition before taking Gauss-Seidel step 2023-01-23 13:58:52 +01:00
sheaf 78c03b99e1 change fitpoint render size 2023-01-23 02:01:56 +01:00
sheaf 86874882e4 fix bug in partitions function 2023-01-23 02:01:03 +01:00
sheaf dd503df126 draw cusps in debug mode 2023-01-23 00:37:56 +01:00
sheaf d2a485f71e Interval Newton method for cusp isolation 2023-01-22 18:00:58 +01:00
sheaf eb68c27941 add separate EnvelopeEquation module (forgot to add earlier) 2023-01-22 18:00:47 +01:00
sheaf bdcac18ab9 add chain rule R^n -> R -> R 2023-01-22 04:51:23 +01:00
sheaf 236055b4ca do the interval brush stroking at degree 3 2023-01-21 15:24:08 +01:00
sheaf 6945aac704 improve show instances 2023-01-20 17:42:17 +01:00
sheaf 25d738b252 more WIP with TH now 2023-01-20 16:34:04 +01:00
sheaf c7cd6c2a1c WIP on monomial bases 2023-01-16 02:31:31 +01:00
sheaf 684550a795 implement intervallic brushes 2023-01-13 23:10:06 +01:00
sheaf 09c1bdd948 continue interval arithmetic integration 2023-01-13 15:23:33 +01:00
sheaf a4e9c1cf32 preparation for interval arithmetic 2023-01-13 06:32:34 +01:00
sheaf 33a3cbfaa1 find solutions on nearby curves 2023-01-11 20:05:56 +01:00