Commit Graph

23 Commits

Author SHA1 Message Date
caryclark
a35ab3e6e0 fix fuzzers
Many old pathops-related fuzz failures have built up while
the codebase was under a state a flux. Now that the code
is stable, address these failures.

Most of the CL plumbs the debug global state to downstream
routines so that, if the data is not trusted (ala fuzzed)
the function can safely exit without asserting.

TBR=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2426173002

Review-Url: https://chromiumcodereview.appspot.com/2426173002
2016-10-20 08:32:18 -07:00
caryclark
6a91ad22a4 remove unused code
R=mtklein@google.com

Review URL: https://codereview.chromium.org/1297013002
2015-08-17 10:01:24 -07:00
caryclark
aec2510125 minor fixes to cubics code and overall alignment of how bounds and tops are computed for all curve types
All but 17 extended tests work.

A helper function is privately added to SkPath.h to permit a test to modify a given point in a path.

BUG=skia:3588

Review URL: https://codereview.chromium.org/1107353004
2015-04-29 08:28:30 -07:00
caryclark
54359294a7 cumulative pathops patch
Replace the implicit curve intersection with a geometric curve intersection. The implicit intersection proved mathematically unstable and took a long time to zero in on an answer.

Use pointers instead of indices to refer to parts of curves. Indices required awkward renumbering.

Unify t and point values so that small intervals can be eliminated in one pass.

Break cubics up front to eliminate loops and cusps.

Make the Simplify and Op code more regular and eliminate arbitrary differences.

Add a builder that takes an array of paths and operators.

Delete unused code.

BUG=skia:3588
R=reed@google.com

Review URL: https://codereview.chromium.org/1037573004
2015-03-26 07:52:43 -07:00
reed
0dc4dd6dda Revert of pathops version two (patchset #16 id:150001 of https://codereview.chromium.org/1002693002/)
Reason for revert:
ASAN investigation

Original issue's description:
> pathops version two
>
> R=reed@google.com
>
> marked 'no commit' to attempt to get trybots to run
>
> TBR=reed@google.com
>
> Committed: https://skia.googlesource.com/skia/+/ccec0f958ffc71a9986d236bc2eb335cb2111119

TBR=caryclark@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1029993002
2015-03-24 13:55:33 -07:00
caryclark
ccec0f958f pathops version two
R=reed@google.com

marked 'no commit' to attempt to get trybots to run

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1002693002
2015-03-24 07:28:17 -07:00
commit-bot@chromium.org
2db7fe7d3b When solving the cubic line intersection directly fails, use binary search as a fallback.
The cubic line intersection math empirically works 99.99% of the time (fails 3100 out of 1B random tests) but when it fails, an intersection may be missed altogether.

The binary search is may not find a solution if the cubic line failed to find any solutions at all, but so far that case hasn't arisen.

BUG=skia:2504
TBR=reed@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/266063003

git-svn-id: http://skia.googlecode.com/svn/trunk@14614 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-07 15:31:40 +00:00
commit-bot@chromium.org
91fc81c972 fix cubic/line intersection; add skp tests
BUG=skia:2488
TBR=reed

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/252243003

git-svn-id: http://skia.googlecode.com/svn/trunk@14458 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-04-30 13:37:48 +00:00
commit-bot@chromium.org
4431e7757c Mike R: please sanity check SkPostConfig.h
Mike K: please sanity check Test.cpp and skia_test.cpp

Feel free to look at the rest, but I don't expect any in depth review of path ops innards.

Path Ops first iteration used QuickSort to order segments radiating from an intersection to compute the winding rule.

This revision uses a circular sort instead. Breaking out the circular sort into its own long-lived structure (SkOpAngle) allows doing less work and provides a home for caching additional sorting data.

The circle sort is more stable than the former sort, has a robust ordering and fewer exceptions. It finds unsortable ordering less often. It is less reliant on the initial curve  tangent, using convex hulls instead whenever it can.

Additional debug validation makes sure that the computed structures are self-consistent. A new visualization tool helps verify that the angle ordering is correct.

The 70+M tests pass with this change on Windows, Mac, Linux 32 and Linux 64 in debug and release.

R=mtklein@google.com, reed@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/131103009

git-svn-id: http://skia.googlecode.com/svn/trunk@14183 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-04-14 17:08:59 +00:00
commit-bot@chromium.org
e2eac8b2fd Move macros from TestClassDef.h to Test.h
Motivation: those macros don't make any sense without the definitions
in Test.h.

BUG=
R=mtklein@google.com

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/138563004

git-svn-id: http://skia.googlecode.com/svn/trunk@13074 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-01-14 21:04:37 +00:00
tfarina@chromium.org
78e7b4e1b9 Get rid of DEFINE_TESTCLASS_SHORT() macro.
Instead tests should be written using DEF_TEST() macro, which is much
nicer and simplifies the process of setting up an unit test.

BUG=None
TEST=skpskgr_test, pathops_unittest
R=mtklein@google.com

Review URL: https://codereview.chromium.org/117863005

git-svn-id: http://skia.googlecode.com/svn/trunk@12870 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-01-02 21:45:03 +00:00
caryclark@google.com
927b7028d4 remove unused reduce order code
BUG=

Review URL: https://codereview.chromium.org/85763002

git-svn-id: http://skia.googlecode.com/svn/trunk@12377 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-25 14:18:21 +00:00
caryclark@google.com
a2bbc6e19d pathops work in progress
BUG=

Review URL: https://codereview.chromium.org/52653002

git-svn-id: http://skia.googlecode.com/svn/trunk@12089 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-11-01 17:36:03 +00:00
skia.committer@gmail.com
b0a0589f8a Sanitizing source files in Housekeeper-Nightly
git-svn-id: http://skia.googlecode.com/svn/trunk@11585 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-03 07:01:37 +00:00
caryclark@google.com
7eaa53d8f7 path ops work in progress
make more skps work

remove edit files

BUG=

Review URL: https://codereview.chromium.org/23542056

git-svn-id: http://skia.googlecode.com/svn/trunk@11570 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-10-02 14:49:34 +00:00
caryclark@google.com
570863f2e2 path ops work in progress
path ops work in progress

BUG=

Review URL: https://codereview.chromium.org/21359002

git-svn-id: http://skia.googlecode.com/svn/trunk@11291 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-09-16 15:55:01 +00:00
caryclark@google.com
4fdbb22964 turn off debugging printfs
fix pathops issues 1417, 1418

be more rigorous about pulling intersections of lines to end points
rewrite cubic/line and quad/line intersections to share style

BUG=

Review URL: https://codereview.chromium.org/19543005

git-svn-id: http://skia.googlecode.com/svn/trunk@10270 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-23 15:27:41 +00:00
caryclark@google.com
8d0a524a48 harden and speed up path op unit tests
PathOps tests internal routines direcctly. Check to make sure that
test points, lines, quads, curves, triangles, and bounds read from
arrays are valid (i.e., don't contain NaN) before calling the
test function.

Repurpose the test flags.
- make 'v' verbose test region output against path output
- make 'z' single threaded (before it made it multithreaded)

The latter change speeds up tests run by the buildbot by 2x to 3x.

BUG=

Review URL: https://codereview.chromium.org/19374003

git-svn-id: http://skia.googlecode.com/svn/trunk@10107 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-16 16:11:16 +00:00
caryclark@google.com
fa2aeee27a path ops near exact
Modify line intersections to first
- match exact ends
- compute intersections
- match near ends
where the exact ends are preferred, then near matches, then
computed matches. This pulls matches towards existing end points
when possible, and keeps intersection distances consistent with
different line/line line/quad and line/cubic computations.

BUG=

Review URL: https://codereview.chromium.org/19183003

git-svn-id: http://skia.googlecode.com/svn/trunk@10073 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-15 13:29:13 +00:00
skia.committer@gmail.com
a4aced4728 Sanitizing source files in Housekeeper-Nightly
git-svn-id: http://skia.googlecode.com/svn/trunk@9919 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-09 07:00:56 +00:00
caryclark@google.com
07e97fccd2 path ops work in progress
BUG=

Review URL: https://codereview.chromium.org/18058007

git-svn-id: http://skia.googlecode.com/svn/trunk@9908 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-07-08 17:17:02 +00:00
caryclark@google.com
ad65a3e5fb path ops work in progress
standardize tests
use SK_ARRAY_COUNT everywhere
debug why x87 differs from SIMD 64
various platform specific fixes

git-svn-id: http://skia.googlecode.com/svn/trunk@8689 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-15 19:13:59 +00:00
caryclark@google.com
9166dcb3a0 Add intersections for path ops
This CL depends on 
https://codereview.chromium.org/12827020/
"Add base types for path ops"

The intersection of a line, quadratic, or cubic
with another curve (or with itself) is found by
solving the implicit equation for the curve pair.

The curves are first reduced to find the simplest
form that will describe the original, and to detect
degenerate or special-case data like horizontal and
vertical lines.

For cubic self-intersection, and for a pair of cubics,
the intersection is found by recursively
approximating the cubic with a series of quadratics.

The implicit solutions depend on the root finding
contained in the DCubic and DQuad structs, and
the quartic root finder included here.
Review URL: https://codereview.chromium.org/12880016

git-svn-id: http://skia.googlecode.com/svn/trunk@8552 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-08 11:50:00 +00:00