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skia2/tests/PathOpsCubicIntersectionTest.cpp
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

735 lines
28 KiB
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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "PathOpsCubicIntersectionTestData.h"
#include "PathOpsTestCommon.h"
#include "SkGeometry.h"
#include "SkIntersections.h"
#include "SkPathOpsRect.h"
#include "SkReduceOrder.h"
#include "Test.h"
#include <stdlib.h>
const int firstCubicIntersectionTest = 9;
static void standardTestCases(skiatest::Reporter* reporter) {
for (size_t index = firstCubicIntersectionTest; index < tests_count; ++index) {
int iIndex = static_cast<int>(index);
const CubicPts& cubic1 = tests[index][0];
const CubicPts& cubic2 = tests[index][1];
SkDCubic c1, c2;
c1.debugSet(cubic1.fPts);
c2.debugSet(cubic2.fPts);
SkReduceOrder reduce1, reduce2;
int order1 = reduce1.reduce(c1, SkReduceOrder::kNo_Quadratics);
int order2 = reduce2.reduce(c2, SkReduceOrder::kNo_Quadratics);
const bool showSkipped = false;
if (order1 < 4) {
if (showSkipped) {
SkDebugf("%s [%d] cubic1 order=%d\n", __FUNCTION__, iIndex, order1);
}
continue;
}
if (order2 < 4) {
if (showSkipped) {
SkDebugf("%s [%d] cubic2 order=%d\n", __FUNCTION__, iIndex, order2);
}
continue;
}
SkIntersections tIntersections;
tIntersections.intersect(c1, c2);
if (!tIntersections.used()) {
if (showSkipped) {
SkDebugf("%s [%d] no intersection\n", __FUNCTION__, iIndex);
}
continue;
}
if (tIntersections.isCoincident(0)) {
if (showSkipped) {
SkDebugf("%s [%d] coincident\n", __FUNCTION__, iIndex);
}
continue;
}
for (int pt = 0; pt < tIntersections.used(); ++pt) {
double tt1 = tIntersections[0][pt];
SkDPoint xy1 = c1.ptAtT(tt1);
double tt2 = tIntersections[1][pt];
SkDPoint xy2 = c2.ptAtT(tt2);
if (!xy1.approximatelyEqual(xy2)) {
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
__FUNCTION__, (int)index, pt, tt1, xy1.fX, xy1.fY, tt2, xy2.fX, xy2.fY);
}
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2));
}
reporter->bumpTestCount();
}
}
static const CubicPts testSet[] = {
// FIXME: uncommenting these two will cause this to fail
// this results in two curves very nearly but not exactly coincident
#if 0
{{{67.426548091427676, 37.993772624988935}, {23.483695892376684, 90.476863174921306},
{35.597065061143162, 79.872482633158796}, {75.38634169631932, 18.244890038969412}}},
{{{67.4265481, 37.9937726}, {23.4836959, 90.4768632}, {35.5970651, 79.8724826},
{75.3863417, 18.24489}}},
#endif
{{{0, 0}, {0, 1}, {1, 1}, {1, 0}}},
{{{1, 0}, {0, 0}, {0, 1}, {1, 1}}},
{{{0, 1}, {4, 5}, {1, 0}, {5, 3}}},
{{{0, 1}, {3, 5}, {1, 0}, {5, 4}}},
{{{0, 1}, {1, 6}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {1, 0}, {6, 1}}},
{{{0, 1}, {3, 4}, {1, 0}, {5, 1}}},
{{{0, 1}, {1, 5}, {1, 0}, {4, 3}}},
{{{0, 1}, {1, 2}, {1, 0}, {6, 1}}},
{{{0, 1}, {1, 6}, {1, 0}, {2, 1}}},
{{{0, 1}, {0, 5}, {1, 0}, {4, 0}}},
{{{0, 1}, {0, 4}, {1, 0}, {5, 0}}},
{{{0, 1}, {3, 4}, {1, 0}, {3, 0}}},
{{{0, 1}, {0, 3}, {1, 0}, {4, 3}}},
{{{0, 0}, {1, 2}, {3, 4}, {4, 4}}},
{{{0, 0}, {1, 2}, {3, 4}, {4, 4}}},
{{{4, 4}, {3, 4}, {1, 2}, {0, 0}}},
{{{0, 1}, {2, 3}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {1, 0}, {3, 2}}},
{{{0, 2}, {0, 1}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {2, 0}, {1, 0}}},
{{{0, 1}, {0, 2}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {1, 0}, {2, 0}}},
{{{0, 1}, {1, 6}, {1, 0}, {2, 0}}},
{{{0, 1}, {0, 2}, {1, 0}, {6, 1}}},
{{{0, 1}, {5, 6}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {1, 0}, {6, 5}}},
{{{95.837747722788592, 45.025976907939643}, {16.564570095652982, 0.72959763963222402},
{63.209855865319199, 68.047528419665767}, {57.640240647662544, 59.524565264361243}}},
{{{51.593891741518817, 38.53849970667553}, {62.34752929878772, 74.924924725166022},
{74.810149322641152, 34.17966562983564}, {29.368398119401373, 94.66719277886078}}},
{{{39.765160968417838, 33.060396198677083}, {5.1922921581157908, 66.854301452103215},
{31.619281802149157, 25.269248720849514}, {81.541621071073038, 70.025341524754353}}},
{{{46.078911165743556, 48.259962651999651}, {20.24450549867214, 49.403916182650214},
{0.26325131778756683, 24.46489805563581}, {15.915006546264051, 83.515023059917155}}},
{{{65.454505973241524, 93.881892270353575}, {45.867360264932437, 92.723972719499827},
{2.1464054482739447, 74.636369140183717}, {33.774068594804994, 40.770872887582925}}},
{{{72.963387832494163, 95.659300729473728}, {11.809496633619768, 82.209921247423594},
{13.456139067865974, 57.329313623406605}, {36.060621606214262, 70.867335643091849}}},
{{{32.484981432782945, 75.082940782924624}, {42.467313093350882, 48.131159948246157},
{3.5963115764764657, 43.208665839959245}, {79.442476890721579, 89.709102357602262}}},
{{{18.98573861410177, 93.308887208490106}, {40.405250173250792, 91.039661826118675},
{8.0467721950480584, 42.100282172719147}, {40.883324221187891, 26.030185504830527}}},
{{{7.5374809128872498, 82.441702896003477}, {22.444346930107265, 22.138854312775123},
{66.76091829629658, 50.753805856571446}, {78.193478508942519, 97.7932997968948}}},
{{{97.700573130371311, 53.53260215070685}, {87.72443481149358, 84.575876772671876},
{19.215031396232092, 47.032676472809484}, {11.989686410869325, 10.659507480757082}}},
{{{26.192053931854691, 9.8504326817814416}, {10.174241480498686, 98.476562741434464},
{21.177712558385782, 33.814968789841501}, {75.329030899018534, 55.02231980442177}}},
{{{56.222082700683771, 24.54395039218662}, {95.589995289030483, 81.050822735322086},
{28.180450866082897, 28.837706255185282}, {60.128952916771617, 87.311672180570511}}},
{{{42.449716172390481, 52.379709366885805}, {27.896043159019225, 48.797373636065686},
{92.770268299044233, 89.899302036454571}, {12.102066544863426, 99.43241951960718}}},
{{{45.77532924980639, 45.958701495993274}, {37.458701356062065, 68.393691335056758},
{37.569326692060258, 27.673713456687381}, {60.674866037757539, 62.47349659096146}}},
{{{67.426548091427676, 37.993772624988935}, {23.483695892376684, 90.476863174921306},
{35.597065061143162, 79.872482633158796}, {75.38634169631932, 18.244890038969412}}},
{{{61.336508189019057, 82.693132843213675}, {44.639380902349664, 54.074825790745592},
{16.815615499771951, 20.049704667203923}, {41.866884958868326, 56.735503699973002}}},
{{{18.1312339, 31.6473732}, {95.5711034, 63.5350219}, {92.3283165, 62.0158945},
{18.5656052, 32.1268808}}},
{{{97.402018, 35.7169972}, {33.1127443, 25.8935163}, {1.13970027, 54.9424981},
{56.4860195, 60.529264}}},
};
const int testSetCount = (int) SK_ARRAY_COUNT(testSet);
static const CubicPts newTestSet[] = {
{ { { 130.0427549999999997, 11417.41309999999976 },{ 130.2331240000000037, 11418.3192999999992 },{ 131.0370790000000056, 11419 },{ 132, 11419 } } },
{ { { 132, 11419 },{ 130.8954319999999996, 11419 },{ 130, 11418.10449999999946 },{ 130, 11417 } } },
{{{1,3}, {-1.0564518,1.79032254}, {1.45265341,0.229448318}, {1.45381773,0.22913377}}},
{{{1.45381773,0.22913377}, {1.45425761,0.229014933}, {1.0967741,0.451612949}, {0,1}}},
{{{1.64551306f, 3.57876182f}, {0.298127174f, 3.70454836f}, {-0.809808373f, 6.39524937f}, {-3.66666651f, 13.333334f}}},
{{{1, 2}, {1, 2}, {-3.66666651f, 13.333334f}, {5, 6}}},
{{{0.0660428554,1.65340209}, {-0.251940489,1.43560803}, {-0.782382965,-0.196299091}, {3.33333325,-0.666666627}}},
{{{1,3}, {-1.22353387,1.09411383}, {0.319867611,0.12996155}, {0.886705518,0.107543148}}},
{{{-0.13654758,2.10514426}, {-0.585797966,1.89349782}, {-0.807703257,-0.192306399}, {6,-1}}},
{{{1,4}, {-2.25000453,1.42241001}, {1.1314013,0.0505309105}, {1.87140274,0.0363764353}}},
{{{1.3127951622009277, 2.0637707710266113}, {1.8210518360137939, 1.9148571491241455}, {1.6106204986572266, -0.68700540065765381}, {8.5, -2.5}}},
{{{3, 4}, {0.33333325386047363, 1.3333332538604736}, {3.6666667461395264, -0.66666674613952637}, {3.6666665077209473, -0.66666656732559204}}},
{{{980.026001,1481.276}, {980.026001,1481.276}, {980.02594,1481.27576}, {980.025879,1481.27527}}},
{{{980.025879,1481.27527}, {980.025452,1481.27222}, {980.023743,1481.26038}, {980.02179,1481.24072}}},
{{{1.80943513,3.07782435}, {1.66686702,2.16806936}, {1.68301272,0}, {3,0}}},
{{{0,1}, {0,3}, {3,2}, {5,2}}},
{{{3.4386673,2.66977954}, {4.06668949,2.17046738}, {4.78887367,1.59629118}, {6,2}}},
{{{1.71985495,3.49467373}, {2.11620402,2.7201426}, {2.91897964,1.15138781}, {6,3}}},
{{{0,1}, {0.392703831,1.78540766}, {0.219947904,2.05676103}, {0.218561709,2.05630541}}},
{{{0.218561709,2.05630541}, {0.216418028,2.05560064}, {0.624105453,1.40486407}, {4.16666651,1.00000012}}},
{{{0, 1}, {3, 5}, {2, 1}, {3, 1}}},
{{{1.01366711f, 2.21379328f}, {1.09074128f, 2.23241305f}, {1.60246587f, 0.451849401f}, {5, 3}}},
{{{0, 1}, {0.541499972f, 3.16599989f}, {1.08299994f, 2.69299984f}, {2.10083938f, 1.80391729f}}},
{{{0.806384504f, 2.85426903f}, {1.52740121f, 1.99355423f}, {2.81689167f, 0.454222918f}, {5, 1}}},
{{{0, 1}, {1.90192389f, 2.90192389f}, {2.59807634f, 2.79422879f}, {3.1076951f, 2.71539044f}}},
{{{2, 3}, {2.36602545f, 3.36602545f}, {2.330127f, 3.06217766f}, {2.28460979f, 2.67691422f}}},
{{{0, 1}, {1.90192389f, 2.90192389f}, {2.59807634f, 2.79422879f}, {3.1076951f, 2.71539044f}}},
{{{2.28460979f, 2.67691422f}, {2.20577145f, 2.00961876f}, {2.09807634f, 1.09807622f}, {4, 3}}},
{{{0, 1}, {0.8211091160774231, 2.0948121547698975}, {0.91805583238601685, 2.515404224395752}, {0.91621249914169312, 2.5146586894989014}}},
{{{0.91621249914169312, 2.5146586894989014}, {0.91132104396820068, 2.5126807689666748}, {0.21079301834106445, -0.45617169141769409}, {10.5, -1.6666665077209473}}},
{{{42.6237564,68.9841232}, {32.449646,81.963089}, {14.7713947,103.565269}, {12.6310005,105.247002}}},
{{{37.2640038,95.3540039}, {37.2640038,95.3540039}, {11.3710003,83.7339935}, {-25.0779991,124.912003}}},
{{{0,1}, {4,5}, {6,0}, {1,0}}},
{{{0,6}, {0,1}, {1,0}, {5,4}}},
{{{0,1}, {4,6}, {5,1}, {6,2}}},
{{{1,5}, {2,6}, {1,0}, {6,4}}},
{{{322, 896.04803466796875}, {314.09201049804687, 833.4376220703125}, {260.24713134765625, 785}, {195, 785}}},
{{{195, 785}, {265.14016723632812, 785}, {322, 842.30755615234375}, {322, 913}}},
{{{1, 4}, {4, 5}, {3, 2}, {6, 3}}},
{{{2, 3}, {3, 6}, {4, 1}, {5, 4}}},
{{{67, 913}, {67, 917.388916015625}, {67.224380493164063, 921.72576904296875}, {67.662384033203125, 926}}},
{{{194, 1041}, {123.85984039306641, 1041}, {67, 983.69244384765625}, {67, 913}}},
{{{1,4}, {1,5}, {6,0}, {5,1}}},
{{{0,6}, {1,5}, {4,1}, {5,1}}},
{{{0,1}, {4,5}, {6,0}, {1,0}}},
{{{0,6}, {0,1}, {1,0}, {5,4}}},
{{{0,1}, {4,6}, {2,0}, {2,0}}},
{{{0,2}, {0,2}, {1,0}, {6,4}}},
{{{980.9000244140625, 1474.3280029296875}, {980.9000244140625, 1474.3280029296875}, {978.89300537109375, 1471.95703125}, {981.791015625, 1469.487060546875}}},
{{{981.791015625, 1469.487060546875}, {981.791015625, 1469.4859619140625}, {983.3580322265625, 1472.72900390625}, {980.9000244140625, 1474.3280029296875}}},
{{{275,532}, {277.209137,532}, {279,530.209106}, {279,528}}},
{{{278,529}, {278,530.65686}, {276.65686,532}, {275,532}}},
#if 0 // FIXME: asserts coincidence, not working yet
{{{195, 785}, {124.30755615234375, 785}, {67, 841.85986328125}, {67, 912}}},
{{{67, 913}, {67, 842.30755615234375}, {123.85984039306641, 785}, {194, 785}}},
#endif
{{{149,710.001465}, {149.000809,712.209961}, {150.791367,714}, {153,714}}},
{{{154,715}, {151.238571,715}, {149,712.761414}, {149,710}}},
{{{1,2}, {1,2}, {2,0}, {6,0}}},
{{{0,2}, {0,6}, {2,1}, {2,1}}},
{{{0,1}, {2,3}, {5,1}, {4,3}}},
{{{1,5}, {3,4}, {1,0}, {3,2}}},
{{{399,657}, {399,661.970581}, {403.029449,666}, {408,666}}},
{{{406,666}, {402.686279,666}, {400,663.313721}, {400,660}}},
{{{0,5}, {3,5}, {3,0}, {3,2}}},
{{{0,3}, {2,3}, {5,0}, {5,3}}},
{{{132, 11419}, {130.89543151855469, 11419}, {130, 11418.1044921875}, {130, 11417}}},
{{{3, 4}, {1, 5}, {4, 3}, {6, 4}}},
{{{3, 4}, {4, 6}, {4, 3}, {5, 1}}},
{{{130.04275512695312, 11417.413085937500 },
{130.23312377929687, 11418.319335937500 },
{131.03707885742187, 11419.000000000000 },
{132.00000000000000, 11419.000000000000 }}},
{{{132.00000000000000, 11419.000000000000 },
{130.89543151855469, 11419.000000000000 },
{130.00000000000000, 11418.104492187500 },
{130.00000000000000, 11417.000000000000 }}},
{{{1.0516976506771041, 2.9684399028541346 },
{1.0604363140895228, 2.9633503074444141 },
{1.0692548215065762, 2.9580354426587459 },
{1.0781560339512140, 2.9525043684031349 }}},
{{{1.0523038101345104, 2.9523755204833737 },
{1.0607035288264237, 2.9580853881628375 },
{1.0690530472271964, 2.9633896794787749 },
{1.0773566568712512, 2.9682969775000219 }}},
{{{1.0386522625066592, 2.9759024812329078 },
{1.0559713690392631, 2.9661782500838885 },
{1.0736041309019990, 2.9555348259177858 },
{1.0915734362784633, 2.9440446879826569 }}},
{{{1.0396670794879301, 2.9435062123457261 },
{1.0565690546812769, 2.9557413250983462 },
{1.0732616463413533, 2.9663369676594282 },
{1.0897791867435489, 2.9753618045797472 }}},
{{{0.8685656183311091, 3.0409266475785208 },
{0.99189542936395292, 3.0212163698184424 },
{1.1302108367493320, 2.9265646471747306 },
{1.2952305904872474, 2.7940808546473788 }}},
{{{0.85437872843682727, 2.7536036928549055 },
{1.0045584590592620, 2.9493041024831705 },
{1.1336998329885613, 3.0248027987251747 },
{1.2593809752247314, 3.0152560315809107 }}},
{{{0, 1}, {1, 6}, {1, 0}, {6, 2}}},
{{{0, 1}, {2, 6}, {1, 0}, {6, 1}}},
{{{134,11414}, {131.990234375,11414}, {130.32666015625,11415.482421875}, {130.04275512695312,11417.4130859375}}},
{{{132,11419}, {130.89543151855469,11419}, {130,11418.1044921875}, {130,11417}}},
{{{132,11419}, {130.89543151855469,11419}, {130,11418.1044921875}, {130,11417}}},
{{{130.04275512695312,11417.4130859375}, {130.23312377929687,11418.3193359375}, {131.03707885742187,11419}, {132,11419}}},
{{{0, 1}, {2, 3}, {5, 1}, {4, 3}}},
{{{1, 5}, {3, 4}, {1, 0}, {3, 2}}},
{{{3, 5}, {1, 6}, {5, 0}, {3, 1}}},
{{{0, 5}, {1, 3}, {5, 3}, {6, 1}}},
{{{0, 1}, {1, 5}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {1, 0}, {5, 1}}},
{{{1, 3}, {5, 6}, {5, 3}, {5, 4}}},
{{{3, 5}, {4, 5}, {3, 1}, {6, 5}}},
{{{0, 5}, {0, 5}, {5, 4}, {6, 4}}},
{{{4, 5}, {4, 6}, {5, 0}, {5, 0}}},
{{{0, 4}, {1, 3}, {5, 4}, {4, 2}}},
{{{4, 5}, {2, 4}, {4, 0}, {3, 1}}},
{{{0, 2}, {1, 5}, {3, 2}, {4, 1}}},
{{{2, 3}, {1, 4}, {2, 0}, {5, 1}}},
{{{0, 2}, {2, 3}, {5, 1}, {3, 2}}},
{{{1, 5}, {2, 3}, {2, 0}, {3, 2}}},
{{{2, 6}, {4, 5}, {1, 0}, {6, 1}}},
{{{0, 1}, {1, 6}, {6, 2}, {5, 4}}},
{{{0, 1}, {1, 2}, {6, 5}, {5, 4}}},
{{{5, 6}, {4, 5}, {1, 0}, {2, 1}}},
{{{2.5119999999999996, 1.5710000000000002}, {2.6399999999999983, 1.6599999999999997},
{2.8000000000000007, 1.8000000000000003}, {3, 2}}},
{{{2.4181876227114887, 1.9849772580462195}, {2.8269904869227211, 2.009330650246834},
{3.2004679292461624, 1.9942047174679169}, {3.4986199496818058, 2.0035994597094731}}},
{{{2, 3}, {1, 4}, {1, 0}, {6, 0}}},
{{{0, 1}, {0, 6}, {3, 2}, {4, 1}}},
{{{0, 2}, {1, 5}, {1, 0}, {6, 1}}},
{{{0, 1}, {1, 6}, {2, 0}, {5, 1}}},
{{{0, 1}, {1, 5}, {2, 1}, {4, 0}}},
{{{1, 2}, {0, 4}, {1, 0}, {5, 1}}},
{{{0, 1}, {3, 5}, {2, 1}, {3, 1}}},
{{{1, 2}, {1, 3}, {1, 0}, {5, 3}}},
{{{0, 1}, {2, 5}, {6, 0}, {5, 3}}},
{{{0, 6}, {3, 5}, {1, 0}, {5, 2}}},
{{{0, 1}, {3, 6}, {1, 0}, {5, 2}}},
{{{0, 1}, {2, 5}, {1, 0}, {6, 3}}},
{{{1, 2}, {5, 6}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {2, 1}, {6, 5}}},
{{{0, 6}, {1, 2}, {1, 0}, {1, 0}}},
{{{0, 1}, {0, 1}, {6, 0}, {2, 1}}},
{{{0, 2}, {0, 1}, {3, 0}, {1, 0}}},
{{{0, 3}, {0, 1}, {2, 0}, {1, 0}}},
};
const int newTestSetCount = (int) SK_ARRAY_COUNT(newTestSet);
static void oneOff(skiatest::Reporter* reporter, const CubicPts& cubic1, const CubicPts& cubic2,
bool coin) {
SkDCubic c1, c2;
c1.debugSet(cubic1.fPts);
c2.debugSet(cubic2.fPts);
SkASSERT(ValidCubic(c1));
SkASSERT(ValidCubic(c2));
#if ONE_OFF_DEBUG
SkDebugf("computed quadratics given\n");
SkDebugf(" {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
cubic1[0].fX, cubic1[0].fY, cubic1[1].fX, cubic1[1].fY,
cubic1[2].fX, cubic1[2].fY, cubic1[3].fX, cubic1[3].fY);
SkDebugf(" {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
cubic2[0].fX, cubic2[0].fY, cubic2[1].fX, cubic2[1].fY,
cubic2[2].fX, cubic2[2].fY, cubic2[3].fX, cubic2[3].fY);
#endif
SkIntersections intersections;
intersections.intersect(c1, c2);
#if DEBUG_T_SECT_DUMP == 3
SkDebugf("</div>\n\n");
SkDebugf("<script type=\"text/javascript\">\n\n");
SkDebugf("var testDivs = [\n");
for (int index = 1; index <= gDumpTSectNum; ++index) {
SkDebugf("sect%d,\n", index);
}
#endif
if (coin && intersections.used() < 2) {
SkDebugf("");
}
REPORTER_ASSERT(reporter, !coin || intersections.used() >= 2);
double tt1, tt2;
SkDPoint xy1, xy2;
for (int pt3 = 0; pt3 < intersections.used(); ++pt3) {
tt1 = intersections[0][pt3];
xy1 = c1.ptAtT(tt1);
tt2 = intersections[1][pt3];
xy2 = c2.ptAtT(tt2);
const SkDPoint& iPt = intersections.pt(pt3);
#if ONE_OFF_DEBUG
SkDebugf("%s t1=%1.9g (%1.9g, %1.9g) (%1.9g, %1.9g) (%1.9g, %1.9g) t2=%1.9g\n",
__FUNCTION__, tt1, xy1.fX, xy1.fY, iPt.fX,
iPt.fY, xy2.fX, xy2.fY, tt2);
#endif
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(iPt));
REPORTER_ASSERT(reporter, xy2.approximatelyEqual(iPt));
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2));
}
reporter->bumpTestCount();
}
static void oneOff(skiatest::Reporter* reporter, int outer, int inner) {
const CubicPts& cubic1 = testSet[outer];
const CubicPts& cubic2 = testSet[inner];
oneOff(reporter, cubic1, cubic2, false);
}
static void newOneOff(skiatest::Reporter* reporter, int outer, int inner) {
const CubicPts& cubic1 = newTestSet[outer];
const CubicPts& cubic2 = newTestSet[inner];
oneOff(reporter, cubic1, cubic2, false);
}
static void testsOneOff(skiatest::Reporter* reporter, int index) {
const CubicPts& cubic1 = tests[index][0];
const CubicPts& cubic2 = tests[index][1];
oneOff(reporter, cubic1, cubic2, false);
}
static void oneOffTests(skiatest::Reporter* reporter) {
for (int outer = 0; outer < testSetCount - 1; ++outer) {
for (int inner = outer + 1; inner < testSetCount; ++inner) {
oneOff(reporter, outer, inner);
}
}
for (int outer = 0; outer < newTestSetCount - 1; ++outer) {
for (int inner = outer + 1; inner < newTestSetCount; ++inner) {
newOneOff(reporter, outer, inner);
}
}
}
#define DEBUG_CRASH 0
static void CubicIntersection_RandTest(skiatest::Reporter* reporter) {
srand(0);
const int tests = 10000000;
#if !defined(SK_BUILD_FOR_WIN) && !defined(SK_BUILD_FOR_ANDROID)
unsigned seed = 0;
#endif
for (int test = 0; test < tests; ++test) {
CubicPts cubic1, cubic2;
for (int i = 0; i < 4; ++i) {
cubic1.fPts[i].fX = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100;
cubic1.fPts[i].fY = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100;
cubic2.fPts[i].fX = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100;
cubic2.fPts[i].fY = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100;
}
#if DEBUG_CRASH
char str[1024];
snprintf(str, sizeof(str),
"{{{%1.9g, %1.9g}, {%1.9g, %1.9g}, {%1.9g, %1.9g}, {%1.9g, %1.9g}}},\n"
"{{{%1.9g, %1.9g}, {%1.9g, %1.9g}, {%1.9g, %1.9g}, {%1.9g, %1.9g}}},\n",
cubic1[0].fX, cubic1[0].fY, cubic1[1].fX, cubic1[1].fY, cubic1[2].fX, cubic1[2].fY,
cubic1[3].fX, cubic1[3].fY,
cubic2[0].fX, cubic2[0].fY, cubic2[1].fX, cubic2[1].fY, cubic2[2].fX, cubic2[2].fY,
cubic2[3].fX, cubic2[3].fY);
#endif
SkDRect rect1, rect2;
SkDCubic c1, c2;
c1.debugSet(cubic1.fPts);
c2.debugSet(cubic2.fPts);
rect1.setBounds(c1);
rect2.setBounds(c2);
bool boundsIntersect = rect1.fLeft <= rect2.fRight && rect2.fLeft <= rect2.fRight
&& rect1.fTop <= rect2.fBottom && rect2.fTop <= rect1.fBottom;
if (test == -1) {
SkDebugf("ready...\n");
}
SkIntersections intersections2;
int newIntersects = intersections2.intersect(c1, c2);
if (!boundsIntersect && newIntersects) {
#if DEBUG_CRASH
SkDebugf("%s %d unexpected intersection boundsIntersect=%d "
" newIntersects=%d\n%s %s\n", __FUNCTION__, test, boundsIntersect,
newIntersects, __FUNCTION__, str);
#endif
REPORTER_ASSERT(reporter, 0);
}
for (int pt = 0; pt < intersections2.used(); ++pt) {
double tt1 = intersections2[0][pt];
SkDPoint xy1 = c1.ptAtT(tt1);
double tt2 = intersections2[1][pt];
SkDPoint xy2 = c2.ptAtT(tt2);
REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2));
}
reporter->bumpTestCount();
}
}
static void intersectionFinder(int index0, int index1, double t1Seed, double t2Seed,
double t1Step, double t2Step) {
const CubicPts& cubic1 = newTestSet[index0];
const CubicPts& cubic2 = newTestSet[index1];
SkDPoint t1[3], t2[3];
bool toggle = true;
SkDCubic c1, c2;
c1.debugSet(cubic1.fPts);
c2.debugSet(cubic2.fPts);
do {
t1[0] = c1.ptAtT(t1Seed - t1Step);
t1[1] = c1.ptAtT(t1Seed);
t1[2] = c1.ptAtT(t1Seed + t1Step);
t2[0] = c2.ptAtT(t2Seed - t2Step);
t2[1] = c2.ptAtT(t2Seed);
t2[2] = c2.ptAtT(t2Seed + t2Step);
double dist[3][3];
dist[1][1] = t1[1].distance(t2[1]);
int best_i = 1, best_j = 1;
for (int i = 0; i < 3; ++i) {
for (int j = 0; j < 3; ++j) {
if (i == 1 && j == 1) {
continue;
}
dist[i][j] = t1[i].distance(t2[j]);
if (dist[best_i][best_j] > dist[i][j]) {
best_i = i;
best_j = j;
}
}
}
if (best_i == 0) {
t1Seed -= t1Step;
} else if (best_i == 2) {
t1Seed += t1Step;
}
if (best_j == 0) {
t2Seed -= t2Step;
} else if (best_j == 2) {
t2Seed += t2Step;
}
if (best_i == 1 && best_j == 1) {
if ((toggle ^= true)) {
t1Step /= 2;
} else {
t2Step /= 2;
}
}
} while (!t1[1].approximatelyEqual(t2[1]));
t1Step = t2Step = 0.1;
double t10 = t1Seed - t1Step * 2;
double t12 = t1Seed + t1Step * 2;
double t20 = t2Seed - t2Step * 2;
double t22 = t2Seed + t2Step * 2;
SkDPoint test;
while (!approximately_zero(t1Step)) {
test = c1.ptAtT(t10);
t10 += t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
t1Step = 0.1;
while (!approximately_zero(t1Step)) {
test = c1.ptAtT(t12);
t12 -= t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
while (!approximately_zero(t2Step)) {
test = c2.ptAtT(t20);
t20 += t2[1].approximatelyEqual(test) ? -t2Step : t2Step;
t2Step /= 2;
}
t2Step = 0.1;
while (!approximately_zero(t2Step)) {
test = c2.ptAtT(t22);
t22 -= t2[1].approximatelyEqual(test) ? -t2Step : t2Step;
t2Step /= 2;
}
#if ONE_OFF_DEBUG
SkDebugf("%s t1=(%1.9g<%1.9g<%1.9g) t2=(%1.9g<%1.9g<%1.9g)\n", __FUNCTION__,
t10, t1Seed, t12, t20, t2Seed, t22);
SkDPoint p10 = c1.ptAtT(t10);
SkDPoint p1Seed = c1.ptAtT(t1Seed);
SkDPoint p12 = c1.ptAtT(t12);
SkDebugf("%s p1=(%1.9g,%1.9g)<(%1.9g,%1.9g)<(%1.9g,%1.9g)\n", __FUNCTION__,
p10.fX, p10.fY, p1Seed.fX, p1Seed.fY, p12.fX, p12.fY);
SkDPoint p20 = c2.ptAtT(t20);
SkDPoint p2Seed = c2.ptAtT(t2Seed);
SkDPoint p22 = c2.ptAtT(t22);
SkDebugf("%s p2=(%1.9g,%1.9g)<(%1.9g,%1.9g)<(%1.9g,%1.9g)\n", __FUNCTION__,
p20.fX, p20.fY, p2Seed.fX, p2Seed.fY, p22.fX, p22.fY);
#endif
}
static void CubicIntersection_IntersectionFinder() {
// double t1Seed = 0.87;
// double t2Seed = 0.87;
double t1Step = 0.000001;
double t2Step = 0.000001;
intersectionFinder(0, 1, 0.855895664, 0.864850875, t1Step, t2Step);
intersectionFinder(0, 1, 0.865207906, 0.865207887, t1Step, t2Step);
intersectionFinder(0, 1, 0.865213351, 0.865208087, t1Step, t2Step);
}
static const CubicPts selfSet[] = {
{{{2, 3}, {0, 4}, {3, 2}, {5, 3}}},
{{{3, 6}, {2, 3}, {4, 0}, {3, 2}}},
{{{0, 2}, {2, 3}, {5, 1}, {3, 2}}},
{{{0, 2}, {3, 5}, {5, 0}, {4, 2}}},
{{{3.34, 8.98}, {1.95, 10.27}, {3.76, 7.65}, {4.96, 10.64}}},
{{{3.13, 2.74}, {1.08, 4.62}, {3.71, 0.94}, {2.01, 3.81}}},
{{{6.71, 3.14}, {7.99, 2.75}, {8.27, 1.96}, {6.35, 3.57}}},
{{{12.81, 7.27}, {7.22, 6.98}, {12.49, 8.97}, {11.42, 6.18}}},
};
int selfSetCount = (int) SK_ARRAY_COUNT(selfSet);
static void selfOneOff(skiatest::Reporter* reporter, int index) {
const CubicPts& cubic = selfSet[index];
SkPoint c[4];
for (int i = 0; i < 4; ++i) {
c[i] = cubic.fPts[i].asSkPoint();
}
SkScalar loopT;
SkScalar d[3];
SkCubicType cubicType = SkClassifyCubic(c, d);
if (SkDCubic::ComplexBreak(c, &loopT) && cubicType == SkCubicType::kLoop_SkCubicType) {
SkIntersections i;
SkPoint twoCubics[7];
SkChopCubicAt(c, twoCubics, loopT);
SkDCubic chopped[2];
chopped[0].set(&twoCubics[0]);
chopped[1].set(&twoCubics[3]);
int result = i.intersect(chopped[0], chopped[1]);
REPORTER_ASSERT(reporter, result == 2);
REPORTER_ASSERT(reporter, i.used() == 2);
for (int index = 0; index < result; ++index) {
SkDPoint pt1 = chopped[0].ptAtT(i[0][index]);
SkDPoint pt2 = chopped[1].ptAtT(i[1][index]);
REPORTER_ASSERT(reporter, pt1.approximatelyEqual(pt2));
reporter->bumpTestCount();
}
}
}
static void cubicIntersectionSelfTest(skiatest::Reporter* reporter) {
int firstFail = 0;
for (int index = firstFail; index < selfSetCount; ++index) {
selfOneOff(reporter, index);
}
}
static const CubicPts coinSet[] = {
{{{72.350448608398438, 27.966041564941406}, {72.58441162109375, 27.861515045166016},
{72.818222045898437, 27.756658554077148}, {73.394996643066406, 27.49799919128418}}},
{{{73.394996643066406, 27.49799919128418}, {72.818222045898437, 27.756658554077148},
{72.58441162109375, 27.861515045166016}, {72.350448608398438, 27.966041564941406}}},
{{{297.04998779296875, 43.928997039794922}, {297.04998779296875, 43.928997039794922},
{300.69699096679688, 45.391998291015625}, {306.92498779296875, 43.08599853515625}}},
{{{297.04998779296875, 43.928997039794922}, {297.04998779296875, 43.928997039794922},
{300.69699096679688, 45.391998291015625}, {306.92498779296875, 43.08599853515625}}},
{{{2, 3}, {0, 4}, {3, 2}, {5, 3}}},
{{{2, 3}, {0, 4}, {3, 2}, {5, 3}}},
{{{317, 711}, {322.52285766601562, 711}, {327, 715.4771728515625}, {327, 721}}},
{{{324.07107543945312, 713.928955078125}, {324.4051513671875, 714.26300048828125},
{324.71566772460937, 714.62060546875}, {325, 714.9990234375}}},
};
static int coinSetCount = (int) SK_ARRAY_COUNT(coinSet);
static void coinOneOff(skiatest::Reporter* reporter, int index) {
const CubicPts& cubic1 = coinSet[index];
const CubicPts& cubic2 = coinSet[index + 1];
oneOff(reporter, cubic1, cubic2, true);
}
static void cubicIntersectionCoinTest(skiatest::Reporter* reporter) {
int firstFail = 0;
for (int index = firstFail; index < coinSetCount; index += 2) {
coinOneOff(reporter, index);
}
}
DEF_TEST(PathOpsCubicCoinOneOff, reporter) {
coinOneOff(reporter, 0);
}
DEF_TEST(PathOpsCubicIntersectionOneOff, reporter) {
newOneOff(reporter, 0, 1);
}
DEF_TEST(PathOpsCubicIntersectionTestsOneOff, reporter) {
testsOneOff(reporter, 10);
}
DEF_TEST(PathOpsCubicSelfOneOff, reporter) {
selfOneOff(reporter, 0);
}
DEF_TEST(PathOpsCubicIntersection, reporter) {
oneOffTests(reporter);
cubicIntersectionSelfTest(reporter);
cubicIntersectionCoinTest(reporter);
standardTestCases(reporter);
if (false) CubicIntersection_IntersectionFinder();
if (false) CubicIntersection_RandTest(reporter);
}
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