History log of /external/skia/src/pathops/SkOpAngle.cpp
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
59d5a0e3f560da40e0ae7036a01d7d58ce3718d8 23-Jan-2017 Cary Clark <caryclark@google.com> Revert "offset angle check edge in common"

This reverts commit d2eb581ebc8f8009e80cccccd74d5b341ef5bd5b.

Reason for revert: broke Google3 MSAN run of dm

Original change's description:
> offset angle check edge in common
>
> When curves cross, their intersection points may be nearby, but not exactly the same.
> Sort the angles formed by the crossing curves when all angles don't have the same
> origin.
>
> This sets up the framework to solve test case that currently fail (e.g., joel6) but
> does not fix all related test cases (e.g., joel9).
>
> All older existing test cases, including extended tests, pass.
>
> Rework the test framework to better report when tests expected to produce failing
> results now pass.
>
> Add new point and vector operations to support offset angles.
>
> TBR=reed@google.com
> BUG=skia:6041
>
> Change-Id: I67c651ded0a25e99ad93d55d6a35109b3ee3698e
> Reviewed-on: https://skia-review.googlesource.com/6624
> Commit-Queue: Cary Clark <caryclark@google.com>
> Reviewed-by: Cary Clark <caryclark@google.com>
>

TBR=caryclark@google.com,reviews@skia.org
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=skia:6041

Change-Id: I43db0808522ac44aceeb4f70e296167ea84a3663
Reviewed-on: https://skia-review.googlesource.com/7373
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
/external/skia/src/pathops/SkOpAngle.cpp
d2eb581ebc8f8009e80cccccd74d5b341ef5bd5b 18-Jan-2017 Cary Clark <caryclark@google.com> offset angle check edge in common

When curves cross, their intersection points may be nearby, but not exactly the same.
Sort the angles formed by the crossing curves when all angles don't have the same
origin.

This sets up the framework to solve test case that currently fail (e.g., joel6) but
does not fix all related test cases (e.g., joel9).

All older existing test cases, including extended tests, pass.

Rework the test framework to better report when tests expected to produce failing
results now pass.

Add new point and vector operations to support offset angles.

TBR=reed@google.com
BUG=skia:6041

Change-Id: I67c651ded0a25e99ad93d55d6a35109b3ee3698e
Reviewed-on: https://skia-review.googlesource.com/6624
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
/external/skia/src/pathops/SkOpAngle.cpp
ff11428526843d3e03feb6843bd21f2d80536415 14-Dec-2016 Cary Clark <caryclark@google.com> more simplify bugs

SkOpAngle::alignmentSameSide()
Shifting an edge to align it for angle sorting may move a compared edge to the opposite side.
For lines that are shifted, check to see if this is so.

class SkOpContourBuilder
If the path contains a pair of lines that cancel, skip them as early as possible.
While not strictly necessary, this optimization is cheap and makes debugging much easier.

SkOpEdgeBuilder::walk()
case SkPath::kCubic_Verb:
If max curvature or inflections break a cubic into pieces, make sure that the pieces are
large enough to process. If not, add the broken piece back to a neighbor.

Correct debugging that had gone stale.
Add active span debugging cache so only changes are shown.

TBR=reed@google.com
BUG=skia:6401

Change-Id: I766f77e4fb9b76537cf5464961addb103114f5db
Reviewed-on: https://skia-review.googlesource.com/5764
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>
/external/skia/src/pathops/SkOpAngle.cpp
78a37a53365c24670b050acf993818c435922745 20-Oct-2016 caryclark <caryclark@google.com> fix more fuzz, carsvg

Fix a few kevin-generated fuzzers.

Remove an assert triggered by
carsvg when thrown through the
distance field stuff.

TBR=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2427253005

Review-Url: https://chromiumcodereview.appspot.com/2427253005
/external/skia/src/pathops/SkOpAngle.cpp
a35ab3e6e024d0b548ded26a2e3b8ecd838ead93 20-Oct-2016 caryclark <caryclark@google.com> 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
/external/skia/src/pathops/SkOpAngle.cpp
b36a3cd137e2b6c328854015018594bb9967e493 18-Oct-2016 caryclark <caryclark@google.com> break ambiguous angle sorting loop

A pair of cubics may be difficult to sort if the tangents suggest
one sort but the midpoints suggest a different one. When in this
gray area, and when the cumulative sort of all the angles fails to
resolve, reverse the sort to break the tie.

Before, when tiger8 was run through the signed distance field
generated directly from the path data, the simplify call might
hang since the angle could not be resolved. If the endless loop
is detected, and if there is no tie to break, just fail instead.

TBR=reed@google.com
BUG=skia:5131
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2426753002

Review-Url: https://codereview.chromium.org/2426753002
/external/skia/src/pathops/SkOpAngle.cpp
e47ae2998c1cf944db5743a416583dd0f042b6d9 05-Oct-2016 Cary Clark <caryclark@google.com> remove dead code

Use code coverage and a new '-c' flag to find
and remove unneeded code.

TBR=reed@google.com

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2397593002

patch from issue 2397593002 at patchset 1 (http://crrev.com/2397593002#ps1)

Change-Id: I741a82de9191146c10457d4c0b9cb9605dff2069
Reviewed-on: https://skia-review.googlesource.com/2983
Reviewed-by: Cary Clark <caryclark@google.com>
/external/skia/src/pathops/SkOpAngle.cpp
6c3b9cdcb047afe963c7bcf34834ba2ecccacc33 26-Sep-2016 caryclark <caryclark@google.com> fix tiger b

The tiger tests have uncovered numerous bugs.
This CL fixes the last of them.

If a pair of curves do not intersect, but
have one or both ends very close to the opposite
curve, consider that an intersection.

TBR=reed@google.com
BUG=skia:5131
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2356363003

Review-Url: https://codereview.chromium.org/2356363003
/external/skia/src/pathops/SkOpAngle.cpp
eed356d281adbf93ecbd89cb23913a7861cd8578 14-Sep-2016 caryclark <caryclark@google.com> Rewriting path writer

The path writer takes constructs the output path out of
curves that satisfy the pathop operation.

Curves contain lists of t/point pairs that may not be
comparable to each other. To match up curve ends in the
output path, look for adjacent curves to have a shared
membership rather than comparing point values.

Use path utilities to connect partial curve lists into
closed contours.

Share the angle code that determines if a curve has become
a degenerate line with the path writer.

Clean up some code on the way, and delete some unused
functions.

TBR=reed@google.com
BUG=5188
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2321973005

Review-Url: https://codereview.chromium.org/2321973005
/external/skia/src/pathops/SkOpAngle.cpp
30b9fdd6a1d607bde20c793af65b5e2e8a1737ca 31-Aug-2016 caryclark <caryclark@google.com> pathops coincident work

This is working towards fixing all bugs around simplifying the tiger.

This installment simplifies the point-t intersection list as it is built rather than doing the analysis once the intersections are complete. This avoids getting the list in an inconsistent state and makes coincident checks faster and more stable.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2237223002

TBR=reed@google.com
BUG=skia:5131

Review-Url: https://codereview.chromium.org/2237223002
/external/skia/src/pathops/SkOpAngle.cpp
81681949d363f777809af167c70912ca2a612036 21-Jul-2016 caryclark <caryclark@google.com> allow curves on side of lines to be very small

Increase the precision of the 'all on one side' pathops
angle test to reduce the number of unorderable segments
found by the cubics_d3 test.

This allows pathsops_unittest release build with -v -V -x
to run without error.

TBR=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2168163002

Review-Url: https://codereview.chromium.org/2168163002
/external/skia/src/pathops/SkOpAngle.cpp
55888e44171ffd48b591d19256884a969fe4da17 18-Jul-2016 caryclark <caryclark@google.com> pathops coincidence and security rewrite

Most changes stem from working on an examples bracketed
by #if DEBUG_UNDER_DEVELOPMENT // tiger
These exposed many problems with coincident curves,
as well as errors throughout the code.

Fixing these errors also fixed a number of fuzzer-inspired
bug reports.

* Line/Curve Intersections
Check to see if the end of the line nearly intersects
the curve. This was a FIXME in the old code.

* Performance
Use a central chunk allocator.
Plumb the allocator into the global variable state
so that it can be shared. (Note that 'SkGlobalState'
is allocated on the stack and is visible to children
functions but not other threads.)

* Refactor
Let SkOpAngle grow up from a structure to a class.
Let SkCoincidentSpans grow up from a structure to a class.
Rename enum Alias to AliasMatch.

* Coincidence Rewrite
Add more debugging to coincidence detection.
Parallel debugging routines have read-only logic to report
the current coincidence state so that steps through the
logic can expose whether things got better or worse.

More functions can error-out and cause the pathops
engine to non-destructively exit.

* Accuracy
Remove code that adjusted point locations. Instead,
offset the curve part so that sorted curves all use
the same origin.
Reduce the size (and influence) of magic numbers.

* Testing
The debug suite with verify and the full release suite
./out/Debug/pathops_unittest -v -V
./out/Release/pathops_unittest -v -V -x
expose one error. That error is captured as cubics_d3.
This error exists in the checked in code as well.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2128633003

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2128633003

Review-Url: https://codereview.chromium.org/2128633003
/external/skia/src/pathops/SkOpAngle.cpp
3127c99986dc932343aae5ccc575237d99c3aaec 09-Dec-2015 caryclark <caryclark@google.com> ubsan shift fixes

Use an inline function that does a normal shift. When built for the sanitizer, add casts so that the shift is unsigned.

Also make a few fixes to do unsigned shifts or avoid the shift altogether; and add an argument spec to some macros.

R=reed@google.com,mtklein@google.com
BUG=skia:4633

Review URL: https://codereview.chromium.org/1503423003
/external/skia/src/pathops/SkOpAngle.cpp
26ad22ab61539e3d3b6bc5e0da8dcebbd52a53de 16-Oct-2015 caryclark <caryclark@google.com> Enabling clip stack flattening exercises path ops.
Iterating through the 903K skps that represent the
imagable 1M top web pages triggers a number of
bugs, some of which are addressed here.

Some web pages trigger intersecting cubic
representations of arc with their conic
counterparts. This exposed a flaw in coincident
detection that caused an infinite loop. The loop
alternatively extended the coincident section and,
determining the that the bounds of the curve pairs
did not overlap, deleted the extension.

Track the number of times the coincident detection
is called, and if it exceeds an empirically found
limit, assume that the curves are coincident and
force it to be so.

The loop count limit can be determined by enabling
DEBUG_T_SECT_LOOP_COUNT and running all tests. The
largest count is reported on completion.

Another class of bugs was caused by concident
detection duplicating nearly identical points that
had been merged earlier. To track these bugs, the
'handle coincidence' code was duplicated as a
const debug variety that reported if one of a
dozen or so irregularities are present; then it is
easier to see when a block of code that fixes one
irregularity regresses another.

Creating the debug const code version exposed some
non-debug code that could be const, and some that
was experimental and could be removed. Set
DEBUG_COINCIDENCE to track coincidence health and
handling.

For running on Chrome, DEBUG_VERIFY checks the
result of pathops against the same operation
using SkRegion to verify that the results are
nearly the same.

When visualizing the pathops work using
tools/pathops_visualizer.htm, set
DEBUG_DUMP_ALIGNMENT to see the curves after
they've been aligned for coincidence.

Other bugs fixed include detecting when a
section of a pair of curves have devolved into
lines and are coincident.

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1394503003
/external/skia/src/pathops/SkOpAngle.cpp
96fcdcc219d2a0d3579719b84b28bede76efba64 27-Aug-2015 halcanary <halcanary@google.com> Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
/external/skia/src/pathops/SkOpAngle.cpp
60e0fee6d4acff638ccc9670c4055aced529a7a0 26-Aug-2015 bungeman <bungeman@google.com> Remove include of stdlib.h from SkTypes.h.

Unfortunately, immintrin.h (which is also included by SkTypes)
includes xmmintrin.h which includes mm_malloc.h which includes
stdlib.h for malloc even though, from the implementation, it is
difficult to see why.

Fortunately, arm_neon.h does not seem to be involved in such
shenanigans, so building for Android will keep things sane.

TBR=reed@google.com
Doesn't change Skia API, just moves an include.

Review URL: https://codereview.chromium.org/1313203003
/external/skia/src/pathops/SkOpAngle.cpp
fc95be17c3f294a86e7ba82790e38cd7ae7146eb 08-Jul-2015 caryclark <caryclark@google.com> fix pathops battle test

The intermediate subtraction threw away bits causing
the subsequent cross product to fail. Defer the
bit truncation until after the vector is computed.

TBR=reed@google.com

Review URL: https://codereview.chromium.org/1226933003
/external/skia/src/pathops/SkOpAngle.cpp
624637cc8ec22c000409704d0b403ac1b81ad4b0 11-May-2015 caryclark <caryclark@google.com> Path ops formerly found the topmost unprocessed edge and determined its angle sort order to initialize the winding. This never worked correctly with cubics and was flaky with paths consisting mostly of vertical edges.

This replacement shoots axis-aligned rays through all intersecting edges to find the outermost one either horizontally or vertically. The resulting code is smaller and twice as fast.

To support this, most of the horizontal / vertical intersection code was rewritten and standardized, and old code supporting the top-directed winding was deleted.

Contours were pointed to by an SkTDArray. Instead, put them in a linked list, and designate the list head with its own class to ensure that methods that take lists of contours start at the top. This change removed a large percentage of memory allocations used by path ops.

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

Review URL: https://codereview.chromium.org/1111333002
/external/skia/src/pathops/SkOpAngle.cpp
1049f1246e7be4ccb68001361efceb8933e6f81c 20-Apr-2015 caryclark <caryclark@google.com> Now, path ops natively intersect conics, quads, and cubics in any combination. There are still a class of cubic tests that fail and a handful of undiagnosed failures from skps and fuzz tests, but things are much better overall.

Extended tests (150M+) run to completion in release in about 6 minutes; the standard test suite exceeds 100K and finishes in a few seconds on desktops.

TBR=reed
BUG=skia:3588

Review URL: https://codereview.chromium.org/1037953004
/external/skia/src/pathops/SkOpAngle.cpp
54359294a7c9dc54802d512a5d891a35c1663392 26-Mar-2015 caryclark <caryclark@google.com> 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
/external/skia/src/pathops/SkOpAngle.cpp
0dc4dd6dda9a7912f696b46d9c02155ec1d1ba5f 24-Mar-2015 reed <reed@google.com> 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
/external/skia/src/pathops/SkOpAngle.cpp
ccec0f958ffc71a9986d236bc2eb335cb2111119 24-Mar-2015 caryclark <caryclark@google.com> 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
/external/skia/src/pathops/SkOpAngle.cpp
65f553182ab7069378ef863d30094d0327f178d0 13-Nov-2014 caryclark <caryclark@google.com> These tests stress pathops by describing the union of circle-like paths that have tiny line segments embedded and double back to create near-coincident conditions.

The fixes include
- detect when finding the active top loops between two possible answers
- preflight chasing winding to ensure answer is consistent
- binary search more often when quadratic intersection fails
- add more failure paths when an intersect is missed

While this fixes the chrome bug, reenabling path ops in svg should be deferred until additional fixes are landed.

TBR=
BUG=421132

Committed: https://skia.googlesource.com/skia/+/6f726addf3178b01949bb389ef83cf14a1d7b6b2

Review URL: https://codereview.chromium.org/633393002
/external/skia/src/pathops/SkOpAngle.cpp
27c46a08a9210e9306b8ea1b00349ec198153c38 28-Oct-2014 hcm <hcm@google.com> Revert of harden pathops for pathological test (patchset #19 id:410001 of https://codereview.chromium.org/633393002/)

Reason for revert:
Compile errors on bots

Original issue's description:
> These tests stress pathops by describing the union of circle-like paths that have tiny line segments embedded and double back to create near-coincident conditions.
>
> The fixes include
> - detect when finding the active top loops between two possible answers
> - preflight chasing winding to ensure answer is consistent
> - binary search more often when quadratic intersection fails
> - add more failure paths when an intersect is missed
>
> While this fixes the chrome bug, reenabling path ops in svg should be deferred until additional fixes are landed.
>
> TBR=
> BUG=421132
>
> Committed: https://skia.googlesource.com/skia/+/6f726addf3178b01949bb389ef83cf14a1d7b6b2

TBR=caryclark@google.com
NOTREECHECKS=true
NOTRY=true
BUG=421132

Review URL: https://codereview.chromium.org/686843002
/external/skia/src/pathops/SkOpAngle.cpp
6f726addf3178b01949bb389ef83cf14a1d7b6b2 28-Oct-2014 caryclark <caryclark@google.com> These tests stress pathops by describing the union of circle-like paths that have tiny line segments embedded and double back to create near-coincident conditions.

The fixes include
- detect when finding the active top loops between two possible answers
- preflight chasing winding to ensure answer is consistent
- binary search more often when quadratic intersection fails
- add more failure paths when an intersect is missed

While this fixes the chrome bug, reenabling path ops in svg should be deferred until additional fixes are landed.

TBR=
BUG=421132

Review URL: https://codereview.chromium.org/633393002
/external/skia/src/pathops/SkOpAngle.cpp
65b427cff9cd34a06ff060d65d00cc3615d8fd94 18-Sep-2014 caryclark <caryclark@google.com> fix battlefield website by disallowing very small coordinates

also add and remove comments to document other attempts to fix this that had drawbacks

R=fmalita@chromium.org
BUG=414409

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/575553003
/external/skia/src/pathops/SkOpAngle.cpp
dac1d17027dcaa5596885a9f333979418b35001c 17-Jun-2014 caryclark <caryclark@google.com> Enabling the canvas bit to turn the clip stack into a flat replace exposed around 100 failures when testing the 800K skp set generated from the top 1M web sites.

This fixes all but one of those failures.

Major changes include:
- Replace angle indices with angle pointers. This was motivated by the need to add angles later but not renumber existing angles.
- Aggressive segment chase. When the winding is known on a segment, more aggressively passing that winding to adjacent segments allows fragmented data sets to succeed.
- Line segments with ends nearly the same are treated as coincident first.
- Transfer partial coincidence by observing that if segment A is partially coincident to B and C then B and C may be partially coincident.

TBR=reed

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/272153002
/external/skia/src/pathops/SkOpAngle.cpp
8cb1daaa1e4343eb60a7c4f21c12e33de30dad64 25-Apr-2014 commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> fix minor skp-found bugs

remove globals from pathops_unittest

BUG=skia:2460
TBR=mtklein

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/239563004

git-svn-id: http://skia.googlecode.com/svn/trunk@14378 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
a1ed7aec95eb8c77d1a39834fea476780007cade 15-Apr-2014 skia.committer@gmail.com <skia.committer@gmail.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Sanitizing source files in Housekeeper-Nightly

git-svn-id: http://skia.googlecode.com/svn/trunk@14196 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
4431e7757cfcb8cfa99535eed0e9f156dabf95c2 14-Apr-2014 commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 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
/external/skia/src/pathops/SkOpAngle.cpp
f61ebc0927d773fe4152a3521cdc3de0112f636e 22-Nov-2013 skia.committer@gmail.com <skia.committer@gmail.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Sanitizing source files in Housekeeper-Nightly

git-svn-id: http://skia.googlecode.com/svn/trunk@12358 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
866f4e34a943c115ac372c22123a1520aa5f9b06 21-Nov-2013 commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> optimize pathops coverage

Remove unused code from SkOpSegment.cpp and friends.
Add new tests exposed by coverage.
Fix a bug exposed by coverage -- removing the need to detect points that are nearby when intersecting.
Add gyp rule for building coverage flavor on Mac.

R=mtklein@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/75453003

git-svn-id: http://skia.googlecode.com/svn/trunk@12344 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
a2bbc6e19d5332e81784e582c290cc060f40c4c7 01-Nov-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 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
/external/skia/src/pathops/SkOpAngle.cpp
7eaa53d8f7e48fd17d02b5e3bd91f90e9c1899ef 02-Oct-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 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
/external/skia/src/pathops/SkOpAngle.cpp
570863f2e22b8ea7d7c504bd15e4f766af097df2 16-Sep-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 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
/external/skia/src/pathops/SkOpAngle.cpp
07e97fccd2d85076cd22ef411b0773ab92a18abe 08-Jul-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 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
/external/skia/src/pathops/SkOpAngle.cpp
8f6ef4010f6835c5ce9ede180e50a6a58512a81e 05-Jun-2013 skia.committer@gmail.com <skia.committer@gmail.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Sanitizing source files in Housekeeper-Nightly

git-svn-id: http://skia.googlecode.com/svn/trunk@9440 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
cffbcc3b9665f2c928544b6fc6b8a0e22a4210fb 04-Jun-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> path ops -- rewrite angle sort

This is a major change resulting from a minor
tweak. In the old code, the intersection point
of two curves was shared between them, but the
intersection points and end points of sorted edges was
computed directly from the intersection T value.

In this CL, both intersection points and sorted points
are the same, and intermediate control points are computed
to preserve their slope.

The sort itself has been completely rewritten to be more
robust and remove 'magic' checks, conditions that empirically
worked but couldn't be rationalized.

This CL was triggered by errors generated computing the clips
of SKP files. At this point, all 73M standard tests work and
at least the first troublesome SKPs work.

Review URL: https://codereview.chromium.org/15338003

git-svn-id: http://skia.googlecode.com/svn/trunk@9432 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
277c3f87656c44e0a651ed0dd56efa16c0ab07b4 31-May-2013 reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> bump picture version since SkPath has changed (conics)

enable conics in SkPath

git-svn-id: http://skia.googlecode.com/svn/trunk@9370 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
fa2f2a48f6822b88ab895fece1998af549c16ebe 30-May-2013 reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Revert "add asserts to point<-->verb helpers"

This reverts commit b4775ac7b55802e87231768f002e4b42f233b0aa.

git-svn-id: http://skia.googlecode.com/svn/trunk@9347 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
7950a9eba71f65365d88021680a16f245ad3fa68 30-May-2013 reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> add asserts to point<-->verb helpers

patch from issue 16153005

BUG=

Review URL: https://codereview.chromium.org/16195004

git-svn-id: http://skia.googlecode.com/svn/trunk@9344 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
2b34fe01d7b5736b212eb4886afc723a7b9241ae 08-May-2013 skia.committer@gmail.com <skia.committer@gmail.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Sanitizing source files in Housekeeper-Nightly

git-svn-id: http://skia.googlecode.com/svn/trunk@9051 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
a5e55925ea03e76885804bda77408a1d6f04c335 07-May-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> path ops -- fix skp bugs

This fixes a series of bugs discovered by running
the small set of Skia skp files through pathops
to flatten the clips.
Review URL: https://codereview.chromium.org/14798004

git-svn-id: http://skia.googlecode.com/svn/trunk@9042 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
b76d3b677713693137936ff813b92c4be48af173 22-Apr-2013 commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> path ops -- use standard SkTQSort

thanks to bungeman for the contextual sort

R=bungeman@google.com

Author: caryclark@google.com

Review URL: https://chromiumcodereview.appspot.com/14034014

git-svn-id: http://skia.googlecode.com/svn/trunk@8810 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
0361032c0b53401030a720bc8b4930c3ec59f19e 18-Apr-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> path ops work in progress

fix bugs in tests on 32 bit release

Most changes revolve around pinning computed t values
very close to zero and one.

git-svn-id: http://skia.googlecode.com/svn/trunk@8745 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
b3f0921fba9457ba7ea79f220d8c1ec9345bfd3a 17-Apr-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> shape ops work in progress

Try to fix the 32 bit build by making some math
decisions more robust.

Rewrite the cubic intersection special case that
detects if only end points are shared.

Rewrite the angle sort setup that computes whether
a cubic bends to the left or right.

git-svn-id: http://skia.googlecode.com/svn/trunk@8726 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
3284017a60ea4fc3dc5b95838ba0c301ee1e4e8d 09-Apr-2013 skia.committer@gmail.com <skia.committer@gmail.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Sanitizing source files in Skia_Periodic_House_Keeping

git-svn-id: http://skia.googlecode.com/svn/trunk@8568 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp
07393cab57ce74a4aae89a31fae9aaa9780fc19d 08-Apr-2013 caryclark@google.com <caryclark@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> Add base types for path ops

Paths contain lines, quads, and cubics, which are
collectively curves.

To work with path intersections, intermediary curves
are constructed. For now, those intermediates use
doubles to guarantee sufficient precision.

The DVector, DPoint, DLine, DQuad, and DCubic
structs encapsulate these intermediate curves.

The DRect and DTriangle structs are created to
describe intersectable areas of interest.

The Bounds struct inherits from SkRect to create
a SkScalar-based rectangle that intersects shared
edges.

This also includes common math equalities and
debugging that the remainder of path ops builds on,
as well as a temporary top-level interface in
include/pathops/SkPathOps.h.
Review URL: https://codereview.chromium.org/12827020

git-svn-id: http://skia.googlecode.com/svn/trunk@8551 2bbb7eff-a529-9590-31e7-b0007b416f81
/external/skia/src/pathops/SkOpAngle.cpp