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67 Commits

Author SHA1 Message Date
Cosimo Lupo
4036512a27
C_O_L_R_: factor out method to convert v0 layer records to dict of list 
we'll need that when we subset the COLRv0 portion of a COLRv1 table
 2021-02-15 11:12:16 +00:00
rsheeter
7abd234929
Update tests for new formats 2021-02-15 10:42:59 +00:00
rsheeter
5316ae4b8c Add test to expose missed otRound + fix 2021-02-12 20:23:06 -08:00
rsheeter
0353c809cd Update COLR build fns per review feedback 2021-02-12 10:02:08 -08:00
rsheeter
ec77db3619 Update Lib/fontTools/colorLib/builder.py 
Co-authored-by: Cosimo Lupo <cosimo@anthrotype.com>
 2021-02-12 10:02:08 -08:00
Cosimo Lupo
e542b60dde
colorLib: add generic TableUnbuilder, reverse of TableBuilder 2021-02-10 18:44:28 +00:00
rsheeter
cf4a4087be Generic build fns 2021-02-10 09:40:37 -08:00
Cosimo Lupo
df672a7ae4
move PaintFormat enum outside of Paint class nested scope 
When a TTFont is loaded with lazy=True, the otTables are only loaded upon BaseTable.__getattr__
when the requested attribute is not found in the instance __dict__.
Since the Paint.Format enum was defined at class level, every Paint instance, even when loaded
lazily, will have a 'Format' attribute and the magic decompile-on-missing-attribute will not
trigger, since the class attribute will be returned when the instance is missing one.

For this reason, and to not add further special cases, it's better to simply move this Paint.Format
enum class outside to the module level scope, and rename it PaintFormat.
 2021-02-05 12:11:43 +00:00
Cosimo Lupo
4b17301321
unbuilder: get Format attribute directly from the Paint instance 2021-02-04 12:24:13 +00:00
Cosimo Lupo
e20ccfcf9f
add unbuildPaintSweepGradient 2021-02-04 12:16:29 +00:00
Cosimo Lupo
22d290b06e
Merge remote-tracking branch 'origin/master' into colorLib-unbuilder 2021-02-04 12:09:30 +00:00
Cosimo Lupo
93c23eaaf7
COLRv1: define new PaintSweepGradient, amend tests with new format numbers 2021-02-03 18:21:09 +00:00
Cosimo Lupo
8f66a1e813
COLRv1: add functions to un-build COLR otTables to raw dicts 
This adds an unbuildColrV1 which does the inverse of colorLib.builder.buildColrV1.
Takes a LayerV1List and BaseGlypV1List and returns a map of base glyphs to raw data structures (list, dict, float, str, etc.).
Useful not only for debugging purpose, but also for implementing COLRv1 subsetting (where we need to drop whole chunks of paints which may be reused by multiple glyphs).
 2021-02-03 16:47:59 +00:00
Cosimo Lupo
9d33afe04d
COLRv1: support unlimited paints as 255-ary tree of PaintColrLayers 
Fixes https://github.com/googlefonts/nanoemoji/pull/225

E.g. BASKET noto-emoji U+1F9FA contains 364 layers
 2021-01-18 17:33:21 +00:00
Cosimo Lupo
a3247ea472
compute rounding (dx,dy) offset outside loop then simply do Circle.move() inside 2021-01-18 09:50:47 +00:00
Cosimo Lupo
c13b1cef84
determine direction to nudge pre-loop 2021-01-15 19:11:10 +00:00
Cosimo Lupo
c9055871d6
minor: rename local vars without _circle suffix 2021-01-15 18:17:08 +00:00
Cosimo Lupo
b465dcff75
rename function to round_start_circle_stable_containment 
as suggested in https://github.com/fonttools/fonttools/pull/2148#discussion_r557656073
 2021-01-15 17:37:11 +00:00
Cosimo Lupo
4f1102ac6e
add a Circle class, handle concentrical case, explain why 2 iterations are enough 2021-01-15 16:59:17 +00:00
Cosimo Lupo
4f886cc226
reword _is_circle_inside_circle parameters for better readability 2021-01-14 19:06:33 +00:00
Cosimo Lupo
c403dbe83a
minor: rename function, remove redundant one 2021-01-14 18:57:19 +00:00
Cosimo Lupo
7f0788ca25
use math.hypot() as per review 
https://github.com/fonttools/fonttools/pull/2148#discussion_r557596711
 2021-01-14 18:22:57 +00:00
Cosimo Lupo
db14e6375e
COLRv1: avoid abrupt change after rounding c0 when too near c1's perimeter 
Fixes https://github.com/googlefonts/picosvg/issues/158

Also see https://github.com/googlefonts/colr-gradients-spec/issues/204
 2021-01-14 17:13:22 +00:00
Cosimo Lupo
538528d5a1
COLRv1: Implement PaintTranslate 
https://github.com/googlefonts/colr-gradients-spec/pull/163
 2020-12-15 16:58:31 +00:00
Cosimo Lupo
f24a640b65
minor 2020-12-08 10:01:37 +00:00
rsheeter
17395b0769
id() invalid if things disappear 2020-12-08 10:00:47 +00:00
Cosimo Lupo
bd8861f10d
sort __dict__.items() when freezing paint tuples 2020-12-08 10:00:46 +00:00
rsheeter
f0dcd335bb
Cache tuples 2020-12-08 10:00:27 +00:00
rsheeter
d888526659 Hook up paint skew and rotate 2020-12-02 21:21:19 -08:00
Cosimo Lupo
e5439eb92b
colorLib: also treat lists [layerGlyph, paletteIndex] as COLRv0 layers 
Don't be too strict about them being tuple type. Plist doesn't distinguish the two.
Fixes https://github.com/googlefonts/ufo2ft/issues/426
 2020-11-16 16:38:22 +00:00
rsheeter
cf2097f7c0 Update to builder per review discussion 2020-11-10 21:51:33 -08:00
rsheeter
cd39e6e246 Add a test 2020-11-06 14:59:52 -08:00
rsheeter
3069ad97ee Less errorprone message 2020-11-06 12:20:26 -08:00
rsheeter
5c83b5be47 Don't generate a PaintColrLayers for a list of 1 2020-11-04 21:59:30 -08:00
rsheeter
9698c71198 Change case of LayerCollector fields per comment 2020-11-04 18:47:16 -08:00
rsheeter
f531038bf9 Start hooking up revised PaintColrLayers 2020-11-04 14:36:43 -08:00
Cosimo Lupo
581416d77c
WIP: add buildPaintColrLayers 2020-11-03 19:11:24 +00:00
rsheeter
d285481215 Fix f-string 2020-11-03 11:06:23 -08:00
Cosimo Lupo
e992953474
swap xy and yx fields in COLRv1 Affine2x3 struct 
following the latest draft
See discussion at https://github.com/googlefonts/colr-gradients-spec/pull/85
 2020-10-30 19:29:59 +00:00
Cosimo Lupo
6c752f677f
rename Paint{ColorGlyph,ColrSlice} 2020-10-27 19:15:50 +00:00
Cosimo Lupo
b654554109
add {First,Last}LayerIndex to PaintColorGlyph 
as proposed in https://github.com/googlefonts/colr-gradients-spec/issues/86

The name of PaintColorGlyph may still change to PaintColorSlice, or PaintColrSlice, or PaintColorGlyphSlice, etc."
https://github.com/googlefonts/colr-gradients-spec/pull/87
 2020-10-27 12:47:10 +00:00
Cosimo Lupo
1803283baf
colorLib: use IntEnum instead of 'magic' Paint format integers 
makes code more readable
 2020-10-26 18:14:13 +00:00
Cosimo Lupo
53b0034b35
colorLib: check that values fit fixed or integer types 
continue building all glyphs, accummulate errors and only stop at the end

fixup
 2020-10-23 17:09:44 +01:00
Cosimo Lupo
a2aaf41a7e
colorLib: rename builders to match current Paint format names 2020-10-09 19:36:35 +01:00
Cosimo Lupo
fdf6a5c1fc
colorLib: update builders to latest COLRv1 draft 
LayerV1Record and Affine2x2 are gone.
LayerV1List now contains a list of Paint DAGs
Added 4 new Paint formats: PaintGlyph, PaintColorGlyph, PaintTransform
and PaintComposite
 2020-10-09 19:36:35 +01:00
Cosimo Lupo
ff79338607
rename radial gradient Paint.Affine attribute to Transform 
as suggested by Peter Constable in
https://github.com/PeterConstable/OT_Drafts/blob/master/COLR_V1/COLRv1formats_rev3.md#paintformat3-table-conicalradial-gradient
 2020-07-02 12:21:12 +01:00
Cosimo Lupo
ac0a755d20
make linear/radial gradient 'point-less', inline x0,y0,x1,y1,... 
https://github.com/googlefonts/colr-gradients-spec/issues/21
 2020-07-02 12:11:40 +01:00
Cosimo Lupo
dea9896421
rename COLR Color -> ColorIndex, transparency to alpha 
https://github.com/googlefonts/colr-gradients-spec/issues/17
https://github.com/googlefonts/colr-gradients-spec/issues/19
 2020-07-02 10:27:47 +01:00
Cosimo Lupo
b215c000df
Rename LayerV1Array to LayerV1List, like with BaseGlyphV1List 
See https://github.com/googlefonts/colr-gradients-spec/issues/14#issuecomment-652542829
 2020-07-01 18:22:03 +01:00
Cosimo Lupo
5f18d9891c
rename BaseGlyphV1Array to BaseGlyphV1List 
As suggested by Peter Constable in https://github.com/googlefonts/colr-gradients-spec/issues/14 and https://github.com/googlefonts/colr-gradients-spec/issues/18
 2020-07-01 18:16:07 +01:00