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2266 Commits

Author SHA1 Message Date
Matthias Clasen
2ca9982b91 rect contour: Avoid nans in corner cases 
The length of rect contours can be zero,
so we much check before we divide.
 2023-08-27 19:17:02 -04:00
Matthias Clasen
a40282b2fb Add gsk_path_point_print 
Another private debug API.
 2023-08-27 19:06:39 -04:00
Matthias Clasen
ad9fb1e101 Improve quad and conic decomposition 
If the control point is equal to either
start or end, just emit a line. This improves
the rendering of rounded rectangles with such
corners.
 2023-08-27 16:57:03 -04:00
Matthias Clasen
02a9652af4 Use a more compact representation for circles 
Print circles as M-o-o-o-o-z.
 2023-08-27 14:32:21 -04:00
Matthias Clasen
0a28a5d53a Add a rectangle contour 
Add a contour that optimizes some things for
rectangles. Also add rectangle detection to the
path parser, and add tests similar to what we
have for the other special contours.
 2023-08-27 12:36:56 -04:00
Matthias Clasen
1e6a124665 Correct the docs of gsk_path_builder_add_rect 
The path does *not* always go clockwise!
 2023-08-27 12:18:36 -04:00
Matthias Clasen
8d1844135b path: Add a comment 2023-08-27 10:10:08 -04:00
Matthias Clasen
b5dd9dae0d rounded rect contour: Fix an oversight 
The close operation takes 2 points, so our array
was one too short. Oops.
 2023-08-27 10:09:32 -04:00
Matthias Clasen
ebcb518e4f Cosmetics 2023-08-27 09:50:16 -04:00
Matthias Clasen
b7ea22f168 Drop unused code 
Nobody is calling gsk_contour_get_start_end, so drop
this internal API.
 2023-08-27 09:39:59 -04:00
Matthias Clasen
822e988efe path: Recognize rounded rects when parsing 
We can look out for M-L-O-L-O-L-O-L-O-Z patterns
with matching numbers.
 2023-08-27 09:31:17 -04:00
Matthias Clasen
cee043f977 Add a rounded rect contour 
This special contour takes advantage of its
rounded-rect-ness for speeding up bounding
boxes and winding numbers. It falls back
to the standard contour code for everything
else.
 2023-08-27 09:29:19 -04:00
Matthias Clasen
031c0ec3e5 pathpoint: Add some debug API 
Add a private gsk_path_point_to_string that
can be called in the debugger if you want
to see the contents of a GskPathPoint and
are too lazy to cast it to GskRealPathPoint
yourself.
 2023-08-27 09:14:47 -04:00
Matthias Clasen
ba3a657c48 contour: Add some debug API 
Add a private  way to get the class of a contour,
so we can test that roundtrips through gsk_path_parse
work as expected.
 2023-08-27 09:13:32 -04:00
Matthias Clasen
5f2f116c28 circle contour: Fix a typo 2023-08-27 07:43:55 -04:00
Matthias Clasen
2297a353b8 Merge branch 'circle-contour' into 'main' 
path: Add a circle contour

See merge request GNOME/gtk!6345
 2023-08-27 11:12:51 +00:00
Bilal Elmoussaoui
7342ce5bca gi: Add missing since annotation 2023-08-27 08:17:00 +00:00
Matthias Clasen
167b38dfa1 contour: Some reactoring 
Make a default print implementation, and use it.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
b8a3d7fa00 path: Recognize circles when parsing 
We can look out for the tell-tale
M-O-O-O-O-Z and turn it into a circle
contour.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
0fce24674a path: Add a circle contour 
This special contour takes advantage of the
circle definition to speed up things like
hit testing and closest point determination.
 2023-08-26 23:42:52 -04:00
Matthias Clasen
99ad585252 Merge branch 'measure-speedups' into 'main' 
contour: Stop doing the roundtrip test

See merge request GNOME/gtk!6342
 2023-08-27 01:13:41 +00:00
Matthias Clasen
6defdb4e8a Drop unused code 
we are not using any gsk_spline functions currently.
 2023-08-26 11:29:09 -04:00
Matthias Clasen
c989a06718 pathmeasure: compute samples on demand 
Only do the work for a curve the first time
we need it. This should greatly speed up
use cases where you only create a measure
to get the length of the path.
 2023-08-26 10:23:02 -04:00
Matthias Clasen
1c8bd8658d curve: Cosmetics 2023-08-26 10:23:02 -04:00
Matthias Clasen
ab50cba4e9 curve: Reduce the order of our approximation 
Use 24 samples instead of 32.
 2023-08-26 10:23:02 -04:00
Matthias Clasen
57918813e2 contour: Stop doing the roundtrip test 
Doing inverse arclength computations is
a very high overhead operation. And the
tests still pass without it.
 2023-08-26 09:39:49 -04:00
Matthias Clasen
677e19042d Docs: Cosmetics 2023-08-25 22:21:27 -04:00
Matthias Clasen
bd79f61cc5 pathpoint: Update the docs 
We have gained some more ways of getting points.
 2023-08-25 22:03:42 -04:00
Matthias Clasen
361cdecfe4 Merge branch 'path-measure-reredone' into 'main' 
Add GskPathMeasure

See merge request GNOME/gtk!6326
 2023-08-26 01:05:19 +00:00
Matthias Clasen
007cfeac94 Add GskPathMeasure 
GskPathMeasure is the public API for path lengths.
 2023-08-25 20:16:49 -04:00
Matthias Clasen
553499522c contour: Add measure API 
In order to compute path lengths efficiently, we need
to cache lookup tables. This commit adds API to let
contours allocate and free such measure data, as well
as API to use the data to go length -> point and
vice versa.
 2023-08-25 20:16:49 -04:00
Benjamin Otte
81821978ae Merge branch 'wip/otte/for-main' into 'main' 
gltexture: Restore previous GL context

See merge request GNOME/gtk!6335
 2023-08-25 21:44:17 +00:00
Matthias Clasen
04e6fc3f74 curve: Add length computation 
Add api to go t<>length.

The code here is inspired by
https://pomax.github.io/bezierinfo/#arclength
 2023-08-25 16:13:36 -04:00
Benjamin Otte
54d2f0063a Merge branch 'replay' into 'main' 
Node replay tests

See merge request GNOME/gtk!6299
 2023-08-25 19:45:34 +00:00
Benjamin Otte
ae7ec40cf2 rendernodeparser: Generate better default child 
... for fill and stroke nodes.

It's most likely we want the path bounds (or path stroke bounds),
so make the parser use those by default.
 2023-08-25 21:12:12 +02:00
Matthias Clasen
eec90d1026 pathbuilder: Add rel-variants for arc-to 
Add rel-variants for all our arc-to APIs. This is
a pretty harmless addition, and it is more consistent
to have these for all ..._to functions.
 2023-08-25 09:45:45 -04:00
Matthias Clasen
f4fb4d04e5 Some pathbuilder doc clarifications 
Mention the end point of the html arc-to call.
 2023-08-25 09:37:07 -04:00
Matthias Clasen
3283157352 Bring arc_to back as convenience API 
It is our main use of conics, so make it an API,
and use it internally.
 2023-08-25 09:31:19 -04:00
Sergey Bugaev
d07a6b8566 snapshot, gsktransform: Mention that rotation happens around (0, 0) 
...and not around the center of the render node, as one could expect
given that the render node syntax for rotation, transform: rotate(90);,
happens to match the CSS syntax for the same thing, and CSS does rotate
around the center by default.

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
 2023-08-25 15:54:05 +03:00
Matthias Clasen
5bc82f4141 Change curve derivative api 
We don't need to have the derivative as a curve,
it is enough for us to compute values of the
derivative at a given t, which we can also do
for conics.
 2023-08-25 07:33:16 -04:00
Matthias Clasen
25e6231a88 path: Switch back to conics 
Arcs were appealing, but they have a fatal flaw: we can't
split our arcs without changing the ellipse they trace.
That could be fixed by adding an extra parameter, but then
it is no longer any better than conics.

So switch back to conics, which have the advantage that they
are used elsewhere.
 2023-08-25 07:33:16 -04:00
Matthias Clasen
5dc0cbc20f Expand the path docs a bit 2023-08-24 15:00:14 -04:00
Matthias Clasen
e1faf28310 Make curvature api more flexible 
Add an extra direction argument to get_curvature to
allow picking the limit on either side, for sharp turns.

Update all callers.
 2023-08-24 14:32:33 -04:00
Matthias Clasen
854c695153 pathpoint docs: Fix a link 
Links gsk->gtk must be done manually, since we
don't have a dependency.
 2023-08-24 13:41:39 -04:00
Matthias Clasen
ebd4ceca15 path docs: Clarify curvature 
The curvature of lines is zero, not infinite.
 2023-08-24 11:15:51 -04:00
Matthias Clasen
d873643407 path docs: Add another illustration 2023-08-24 11:09:28 -04:00
Matthias Clasen
4229a37e90 arc: Fix the derivative 
Scale the derivative such that computing the arc length
of a unit quarter circle wil produce the expected result
of PI/2.
 2023-08-23 22:18:52 -04:00
Matthias Clasen
12297fd88a arc curve: Simplify derivative 2023-08-23 22:11:22 -04:00
Matthias Clasen
7943610066 curve: Fix arc decomposition 2023-08-23 22:11:15 -04:00
Matthias Clasen
f6c2b6bb88 Make foreach work efficiently with arcs 2023-08-23 14:51:31 -04:00