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skia2/tests/PathOpsQuadIntersectionTest.cpp
caryclark 624637cc8e 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
2015-05-11 07:21:28 -07:00

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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 "PathOpsQuadIntersectionTestData.h"
#include "PathOpsTestCommon.h"
#include "SkIntersections.h"
#include "SkPathOpsRect.h"
#include "SkReduceOrder.h"
#include "Test.h"
static void standardTestCases(skiatest::Reporter* reporter) {
bool showSkipped = false;
for (size_t index = 0; index < quadraticTests_count; ++index) {
const SkDQuad& quad1 = quadraticTests[index][0];
SkASSERT(ValidQuad(quad1));
const SkDQuad& quad2 = quadraticTests[index][1];
SkASSERT(ValidQuad(quad2));
SkReduceOrder reduce1, reduce2;
int order1 = reduce1.reduce(quad1);
int order2 = reduce2.reduce(quad2);
if (order1 < 3) {
if (showSkipped) {
SkDebugf("[%d] quad1 order=%d\n", static_cast<int>(index), order1);
}
}
if (order2 < 3) {
if (showSkipped) {
SkDebugf("[%d] quad2 order=%d\n", static_cast<int>(index), order2);
}
}
if (order1 == 3 && order2 == 3) {
SkIntersections intersections;
intersections.intersect(quad1, quad2);
if (intersections.used() > 0) {
for (int pt = 0; pt < intersections.used(); ++pt) {
double tt1 = intersections[0][pt];
SkDPoint xy1 = quad1.ptAtT(tt1);
double tt2 = intersections[1][pt];
SkDPoint xy2 = quad2.ptAtT(tt2);
if (!xy1.approximatelyEqual(xy2)) {
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
__FUNCTION__, static_cast<int>(index), pt, tt1, xy1.fX, xy1.fY,
tt2, xy2.fX, xy2.fY);
REPORTER_ASSERT(reporter, 0);
}
}
}
}
}
}
static const SkDQuad testSet[] = {
{{{1, 1}, {0, 2}, {3, 3}}},
{{{3, 0}, {0, 1}, {1, 2}}},
{{{0.33333333333333326, 0.81481481481481488}, {0.63395173631977997, 0.68744136726313931}, {1.205684411948591, 0.81344322326274499}}},
{{{0.33333333333333326, 0.81481481481481488}, {0.63396444791444551, 0.68743368362444768}, {1.205732763658403, 0.81345617746834109}}},
{{{4981.9990234375, 1590}, {4981.9990234375, 1617.7523193359375}, {4962.375, 1637.3760986328125}}},
{{{4962.3759765625, 1637.3760986328125}, {4982, 1617.7523193359375}, {4982, 1590}}},
{{{48.7416f, 7.74160004f}, {96.4831848f, -40}, {164, -40}}},
{{{56.9671326f, 0}, {52.7835083f, 3.69968891f}, {48.7416f, 7.74160004f}}},
{{{138, 80}, {147.15692138671875, 80}, {155.12803649902344, 82.86279296875}}},
{{{155.12803649902344, 82.86279296875}, {153.14971923828125, 82.152290344238281}, {151.09841918945312, 81.618133544921875}}},
{{{88, 130}, {88, 131.54483032226562}, {88.081489562988281, 133.0560302734375}}},
{{{88.081489562988281, 133.0560302734375}, {88, 131.54483032226562}, {88, 130}}},
{{{0.59987992,2.14448452}, {0.775417507,1.95606446}, {1.00564098,1.79310346}}},
{{{1.00564098,1.79310346}, {1.25936198,1.615623}, {1.35901463,1.46834028}}},
{{{3,0}, {0,1}, {3,2}}},
{{{2,0}, {1,1}, {2,2}}},
{{{38.656852722167969, 38.656852722167969}, {38.651023864746094, 38.662681579589844}, {38.644744873046875, 38.668937683105469}}},
{{{38.656852722167969, 38.656852722167969}, {36.313709259033203, 41}, {33, 41}}},
{{{4914.9990234375, 1523}, {4942.75146484375, 1523}, {4962.375, 1542.6239013671875}}},
{{{4962.3759765625, 1542.6239013671875}, {4942.75244140625, 1523}, {4915, 1523}}},
{{{4867.623046875, 1637.3760986328125}, {4847.9990234375, 1617.7523193359375}, {4847.9990234375, 1590}}},
{{{4848, 1590}, {4848, 1617.7523193359375}, {4867.6240234375, 1637.3760986328125}}},
{{{102.64466094970703, 165.3553466796875}, {110.79246520996094, 173.50314331054687}, {120.81797790527344, 177.11778259277344}}},
{{{113.232177734375, 173.57899475097656}, {116.88026428222656, 175.69805908203125}, {120.81797790527344, 177.11778259277344}}},
{{{-37.3484879,10.0192947}, {-36.4966316,13.2140198}, {-38.1506348,16.0788383}}},
{{{-38.1462746,16.08918}, {-36.4904327,13.2193804}, {-37.3484879,10.0192947}}},
{{{-37.3513985,10.0082998}, {-36.4938011,13.2090998}, {-38.1506004,16.0788002}}},
{{{-37.3508987,10.0102997}, {-36.4930992,13.2110004}, {-38.1497993,16.0809002}}},
{{{-37.3508987,10.0102997}, {-37.3510017,10.0098}, {-37.3512001,10.0093002}}},
{{{-49.0778008,19.0097008}, {-38.2086983,6.80954981}, {-37.3508987,10.0102997}}},
{{{SkBits2Float(0xc22423b2), SkBits2Float(0x40afae2c)},
{SkBits2Float(0xc2189b24), SkBits2Float(0x40e3f058)},
{SkBits2Float(0xc21511d9), SkBits2Float(0x41251125)}}},
{{{SkBits2Float(0xc2153d2f), SkBits2Float(0x412299db)},
{SkBits2Float(0xc2153265), SkBits2Float(0x41233845)},
{SkBits2Float(0xc21527fc), SkBits2Float(0x4123d684)}}},
{{{-37.3097496, 10.1625624}, {-37.2992134, 10.2012377}, {-37.2890472, 10.239872}}},
{{{-41.0348587, 5.49001122}, {-38.1515045, 7.12308884}, {-37.2674294, 10.3166857}}},
{{{-52.8062439,14.1493912}, {-53.6638947,10.948595}, {-52.0070419,8.07883835}}},
{{{-52.8054848,14.1522331}, {-53.6633072,10.9514809}, {-52.0066071,8.08163643}}},
{{{441.853149, 308.209106}, {434.672272, 315.389984}, {424.516998, 315.389984}}},
{{{385.207275, 334.241272}, {406.481598, 312.96698}, {436.567993, 312.96698}}},
{{{-708.00779269310044, -154.36998607290101}, {-707.90560262312511, -154.36998607290101}, {-707.8333433370193, -154.44224536635932}}},
{{{-708.00779269310044, -154.61669472244046}, {-701.04513225634582, -128.85970734043804}, {505.58447265625, -504.9130859375}}},
{{{164, -40}, {231.51681518554687, -40}, {279.25839233398438, 7.7416000366210938}}},
{{{279.25839233398438, 7.7416000366210938}, {275.2164306640625, 3.6996400356292725}, {271.03286743164062, -5.3290705182007514e-015}}},
{{{2.9999997378517067, 1.9737872594345709}, {2.9999997432230918, 1.9739647181863822}, {1.2414155459263587e-163, 5.2957833941332142e-315}}},
{{{2.9999047485265304, 1.9739164225694723}, {3.0000947268526112, 1.9738379076623633}, {0.61149411077591886, 0.0028382324376270418}}},
{{{2.9999996843656502, 1.9721416019045801}, {2.9999997725237835, 1.9749798343422071},
{5.3039068214821359e-315, 8.9546185262775165e-307}}},
{{{2.9984791443874976, 1.974505741312242}, {2.9999992702127476, 1.9738772171479178},
{3.0015187977319759, 1.9732495027303418}}},
{{{0.647069409,2.97691634}, {0.946860918,3.17625612}, {1.46875407,2.65105457}}},
{{{0,1}, {0.723699095,2.82756208}, {1.08907197,2.97497449}}},
{{{131.37418,11414.9825}, {130.28798,11415.9328}, {130.042755,11417.4131}}},
{{{130.585787,11418.4142}, {130.021447,11417.8498}, {130,11417}}},
{{{130.73167037963867, 11418.546386718750}, {131.26360225677490, 11418.985778808592},
{132, 11419 }}},
{{{132, 11419}, {131.15012693405151, 11418.978546142578},
{130.58578681945801, 11418.414184570313}}},
{{{132, 11419},
{130.73167037963867, 11418.546386718750}, {131.26360225677490, 11418.985778808592}}},
{{{131.15012693405151, 11418.978546142578},
{130.58578681945801, 11418.414184570313}, {132, 11419}}},
{{{3.0774019473063863, 3.35198509346713}, {3.0757503498668397, 3.327320623945933},
{3.0744102085015879, 3.3025879417907196}}},
{{{3.053913680774329, 3.3310471586283938}, {3.0758730889691694, 3.3273466070370152},
{3.0975671980059394, 3.3235031316554351}}},
{{{3.39068129, 4.44939202}, {3.03659239, 3.81843234}, {3.06844529, 3.02100922}}},
{{{2.10714698, 3.44196686}, {3.12180288, 3.38575704}, {3.75968569, 3.1281838}}},
{{{2.74792918, 4.77711896}, {2.82236867, 4.23882547}, {2.82848144, 3.63729341}}},
{{{2.62772567, 3.64823958}, {3.46652495, 3.64258364}, {4.1425079, 3.48623815}}},
{{{1.34375, 2.03125}, {2.2734375, 2.6640625}, {3.25, 3.25}}},
{{{3.96875, 4.65625}, {3.3359375, 3.7265625}, {2.75, 2.75}}},
{{{0, 1}, {0.324417544, 2.27953848}, {0.664376547, 2.58940267}}},
{{{1, 2}, {0.62109375, 2.70703125}, {0.640625, 2.546875}}},
{{{1, 2}, {0.984375, 2.3359375}, {1.0625, 2.15625}}},
{{{0, 1}, {0.983539095, 2.30041152}, {1.47325103, 2.61316872}}},
{{{4.09011926, 2.20971038}, {4.74608133, 1.9335932}, {5.02469918, 2.00694987}}},
{{{2.79472921, 1.73568666}, {3.36246373, 1.21251209}, {5, 2}}},
{{{1.80814127, 2.41537795}, {2.23475077, 2.05922313}, {3.16529668, 1.98358763}}},
{{{2.16505631, 2.55782454}, {2.40541285, 2.02193091}, {2.99836023, 1.68247638}}},
{{{3, 1.875}, {3.375, 1.54296875}, {3.375, 1.421875}}},
{{{3.375, 1.421875}, {3.3749999999999996, 1.3007812499999998}, {3, 2}}},
{{{3.34, 8.98}, {2.83363281, 9.4265625}, {2.83796875, 9.363125}}},
{{{2.83796875, 9.363125}, {2.84230469, 9.2996875}, {3.17875, 9.1725}}},
{{{2.7279999999999998, 3.024}, {2.5600000000000005, 2.5600000000000005},
{2.1520000000000001, 1.8560000000000001}}},
{{{0.66666666666666652, 1.1481481481481481}, {1.3333333333333326, 1.3333333333333335},
{2.6666666666666665, 2.1851851851851851}}},
{{{2.728, 3.024}, {2.56, 2.56}, {2.152, 1.856}}},
{{{0.666666667, 1.14814815}, {1.33333333, 1.33333333}, {2.66666667, 2.18518519}}},
{{{0.875, 1.5}, {1.03125, 1.11022302e-16}, {1, 0}}},
{{{0.875, 0.859375}, {1.6875, 0.73046875}, {2.5, 0.625}}},
{{{1.64451042, 0.0942001592}, {1.53635465, 0.00152863961}, {1, 0}}},
{{{1.27672209, 0.15}, {1.32143477, 9.25185854e-17}, {1, 0}}},
{{{0, 0}, {0.51851851851851849, 1.0185185185185186}, {1.2592592592592591, 1.9259259259259258}}},
{{{1.2592592592592593, 1.9259259259259265}, {0.51851851851851893, 1.0185185185185195}, {0, 0}}},
{{{1.93281168, 2.58856757}, {2.38543691, 2.7096125}, {2.51967352, 2.34531784}}},
{{{2.51967352, 2.34531784}, {2.65263731, 2.00639194}, {3.1212119, 1.98608967}}},
{{{2.09544533, 2.51981963}, {2.33331524, 2.25252128}, {2.92003302, 2.39442311}}},
{{{0.924337655, 1.94072717}, {1.25185043, 1.52836494}, {1.71793901, 1.06149951}}},
{{{0.940798831, 1.67439357}, {1.25988251, 1.39778567}, {1.71791672, 1.06650313}}},
{{{0.924337655, 1.94072717}, {1.39158994, 1.32418496}, {2.14967426, 0.687365435}}},
{{{0.940798831, 1.67439357}, {1.48941875, 1.16280321}, {2.47884711, 0.60465921}}},
{{{1.7465749139282332, 1.9930452039527999}, {1.8320006564080331, 1.859481345189089},
{1.8731035127758437, 1.6344055934266613}}},
{{{1.8731035127758437, 1.6344055934266613}, {1.89928170345231, 1.5006405518943067},
{1.9223833226085514, 1.3495796165215643}}},
{{{1.74657491, 1.9930452}, {1.87407679, 1.76762853}, {1.92238332, 1.34957962}}},
{{{0.60797907, 1.68776977}, {1.0447864, 1.50810914}, {1.87464474, 1.63655092}}},
{{{1.87464474, 1.63655092}, {2.70450308, 1.76499271}, {4, 3}}},
{{{1.2071879545809394, 0.82163474041730045}, {1.1534203513372994, 0.52790870069930229},
{1.0880000000000001, 0.29599999999999982}}}, //t=0.63155333662549329,0.80000000000000004
{{{0.33333333333333326, 0.81481481481481488}, {0.63395173631977997, 0.68744136726313931},
{1.205684411948591, 0.81344322326274499}}},
{{{0.33333333333333326, 0.81481481481481488}, {0.63396444791444551, 0.68743368362444768},
{1.205732763658403, 0.81345617746834109}}}, //t=0.33333333333333331, 0.63396444791444551
{{{1.205684411948591, 0.81344322326274499}, {1.2057085875611198, 0.81344969999329253},
{1.205732763658403, 0.81345617746834109}}},
{{{1.20718795, 0.82163474}, {1.15342035, 0.527908701}, {1.088, 0.296}}},
{{{1.20568441, 0.813443223}, {1.20570859, 0.8134497}, {1.20573276, 0.813456177}}},
{{{41.5072916, 87.1234036}, {28.2747836, 80.9545395}, {23.5780771, 69.3344126}}},
{{{72.9633878, 95.6593007}, {42.7738746, 88.4730382}, {31.1932785, 80.2458029}}},
{{{31.1663962, 54.7302484}, {31.1662882, 54.7301074}, {31.1663969, 54.7302485}}},
{{{26.0404936, 45.4260361}, {27.7887523, 33.1863051}, {40.8833242, 26.0301855}}},
{{{29.9404074, 49.1672596}, {44.3131071, 45.3915253}, {58.1067559, 59.5061814}}},
{{{72.6510251, 64.2972928}, {53.6989659, 60.1862397}, {35.2053722, 44.8391126}}},
{{{52.14807018377202, 65.012420045148644}, {44.778669050208237, 66.315562705604378},
{51.619118408823567, 63.787827046262684}}},
{{{30.004993234763383, 93.921296668202288}, {53.384822003076991, 60.732180341802753},
{58.652998934338584, 43.111073088306185}}},
{{{80.897794748143198, 49.236332042718459}, {81.082078218891212, 64.066749904488631},
{69.972305057149981, 72.968595519850993}}},
{{{72.503745601281395, 32.952320736577882}, {88.030880716061645, 38.137194847810164},
{73.193774825517906, 67.773492479591397}}},
{{{67.426548091427676, 37.993772624988935}, {51.129513170665035, 57.542281234563646},
{44.594748190899189, 65.644267382683879}}},
{{{61.336508189019057, 82.693132843213675}, {54.825078921449354, 71.663932799212432},
{47.727444217558926, 61.4049645128392}}},
{{{67.4265481, 37.9937726}, {51.1295132, 57.5422812}, {44.5947482, 65.6442674}}},
{{{61.3365082, 82.6931328}, {54.8250789, 71.6639328}, {47.7274442, 61.4049645}}},
{{{53.774852327053594, 53.318060789841951}, {45.787877803416805, 51.393492026284981},
{46.703936967162392, 53.06860709822206}}},
{{{46.703936967162392, 53.06860709822206}, {47.619996130907957, 54.74372217015916},
{53.020051653535361, 48.633140968832024}}},
{{{50.934805397717923, 51.52391952648901}, {56.803308902971423, 44.246234610627596},
{69.776888596721406, 40.166645096692555}}},
{{{50.230212796400401, 38.386469101526998}, {49.855620812184917, 38.818990392153609},
{56.356567496227363, 47.229909093319407}}},
{{{36.148792695174222, 70.336952793070424}, {36.141613037691357, 70.711654739870085},
{36.154708826402597, 71.088492662905836}}},
{{{35.216235592661825, 70.580199617313212}, {36.244476835123969, 71.010897787304074},
{37.230244263238326, 71.423156953613102}}},
// this pair is nearly coincident, and causes the quartic code to produce bad
// data. Mathematica doesn't think they touch. Graphically, I can't tell.
// it may not be so bad to pretend that they don't touch, if I can detect that
{{{369.848602, 145.680267}, {382.360413, 121.298294}, {406.207703, 121.298294}}},
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{33.567436351153468, 62.336347586395924}, {35.200980274619084, 65.038561460144479},
{36.479571811084995, 67.632178905412445}}},
{{{41.349524945572696, 67.886658677862641}, {39.125562529359087, 67.429772735149214},
{35.600314083992416, 66.705372160552685}}},
{{{67.25299631583178, 21.109080184767524}, {43.617595267398613, 33.658034168577529},
{33.38371819435676, 44.214192553988745}}},
{{{40.476838859398541, 39.543209911285999}, {36.701186108431131, 34.8817994016458},
{30.102144288878023, 26.739063172945315}}},
{{{25.367434474345036, 50.4712103169743}, {17.865013304933097, 37.356741010559439},
{16.818988838905465, 37.682915484123129}}},
{{{16.818988838905465, 37.682915484123129}, {15.772964372877833, 38.009089957686811},
{20.624104547604965, 41.825131596683121}}},
{{{26.440225044088567, 79.695009812848298}, {26.085525979582247, 83.717928354134784},
{27.075079976297072, 84.820633667838905}}},
{{{27.075079976297072, 84.820633667838905}, {28.276546859574015, 85.988574184029034},
{25.649263209500006, 87.166762066617025}}},
{{{34.879150914024962, 83.862726601601125}, {35.095810134304429, 83.693473210169543},
{35.359284111931586, 83.488069234177502}}},
{{{54.503204203015471, 76.094098492518242}, {51.366889541918894, 71.609856061299155},
{46.53086955445437, 69.949863036494207}}},
{{{0, 0}, {1, 0}, {0, 3}}},
{{{1, 0}, {0, 1}, {1, 1}}},
{{{369.961151, 137.980698}, {383.970093, 121.298294}, {406.213287, 121.298294}}},
{{{353.2948, 194.351074}, {353.2948, 173.767563}, {364.167572, 160.819855}}},
{{{360.416077, 166.795715}, {370.126831, 147.872162}, {388.635406, 147.872162}}},
{{{406.236359, 121.254936}, {409.445679, 121.254936}, {412.975952, 121.789818}}},
{{{406.235992, 121.254936}, {425.705902, 121.254936}, {439.71994, 137.087616}}},
{{{369.8543701171875, 145.66734313964844}, {382.36788940429688, 121.28203582763672},
{406.21844482421875, 121.28203582763672}}},
{{{369.96469116210938, 137.96672058105469}, {383.97555541992188, 121.28203582763672},
{406.2218017578125, 121.28203582763672}}},
{{{369.962311, 137.976044}, {383.971893, 121.29287}, {406.216125, 121.29287}}},
{{{400.121704, 149.468719}, {391.949493, 161.037186}, {391.949493, 181.202423}}},
{{{391.946747, 181.839218}, {391.946747, 155.62442}, {406.115479, 138.855438}}},
{{{360.048828125, 229.2578125}, {360.048828125, 224.4140625}, {362.607421875, 221.3671875}}},
{{{362.607421875, 221.3671875}, {365.166015625, 218.3203125}, {369.228515625, 218.3203125}}},
{{{8, 8}, {10, 10}, {8, -10}}},
{{{8, 8}, {12, 12}, {14, 4}}},
{{{8, 8}, {9, 9}, {10, 8}}}
};
const size_t testSetCount = SK_ARRAY_COUNT(testSet);
static void oneOffTest1(skiatest::Reporter* reporter, size_t outer, size_t inner) {
const SkDQuad& quad1 = testSet[outer];
SkASSERT(ValidQuad(quad1));
const SkDQuad& quad2 = testSet[inner];
SkASSERT(ValidQuad(quad2));
SkIntersections intersections;
intersections.intersect(quad1, quad2);
for (int pt = 0; pt < intersections.used(); ++pt) {
double tt1 = intersections[0][pt];
SkDPoint xy1 = quad1.ptAtT(tt1);
double tt2 = intersections[1][pt];
SkDPoint xy2 = quad2.ptAtT(tt2);
if (!xy1.approximatelyEqual(xy2)) {
SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n",
__FUNCTION__, static_cast<int>(outer), static_cast<int>(inner),
tt1, xy1.fX, xy1.fY, tt2, xy2.fX, xy2.fY);
REPORTER_ASSERT(reporter, 0);
}
#if ONE_OFF_DEBUG
SkDebugf("%s [%d][%d] t1=%1.9g (%1.9g, %1.9g) t2=%1.9g\n", __FUNCTION__,
outer, inner, tt1, xy1.fX, xy1.fY, tt2);
#endif
}
}
static void oneOffTests(skiatest::Reporter* reporter) {
for (size_t outer = 0; outer < testSetCount - 1; ++outer) {
for (size_t inner = outer + 1; inner < testSetCount; ++inner) {
oneOffTest1(reporter, outer, inner);
}
}
}
static const SkDQuad coincidentTestSet[] = {
{{{4914.9990234375, 1523}, {4942.75146484375, 1523}, {4962.375, 1542.6239013671875}}},
{{{4962.3759765625, 1542.6239013671875}, {4942.75244140625, 1523}, {4915, 1523}}},
#if 0
{{{97.9337615966796875,100}, {88,112.94264984130859375}, {88,130}}},
{{{88,130}, {88,124.80951690673828125}, {88.91983795166015625,120}}},
#endif
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{369.850525, 145.675964}, {382.362915, 121.29287}, {406.211273, 121.29287}}},
{{{8, 8}, {10, 10}, {8, -10}}},
{{{8, -10}, {10, 10}, {8, 8}}},
};
static const int coincidentTestSetCount = (int) SK_ARRAY_COUNT(coincidentTestSet);
static void coincidentTestOne(skiatest::Reporter* reporter, int test1, int test2) {
const SkDQuad& quad1 = coincidentTestSet[test1];
SkASSERT(ValidQuad(quad1));
const SkDQuad& quad2 = coincidentTestSet[test2];
SkASSERT(ValidQuad(quad2));
SkIntersections intersections2;
intersections2.intersect(quad1, quad2);
REPORTER_ASSERT(reporter, intersections2.debugCoincidentUsed() >= 2);
REPORTER_ASSERT(reporter, intersections2.used() >= 2);
for (int pt = 0; pt < intersections2.debugCoincidentUsed(); pt += 2) {
double tt1 = intersections2[0][pt];
double tt2 = intersections2[1][pt];
SkDPoint pt1 = quad1.ptAtT(tt1);
SkDPoint pt2 = quad2.ptAtT(tt2);
REPORTER_ASSERT(reporter, pt1.approximatelyEqual(pt2));
}
}
static void coincidentTest(skiatest::Reporter* reporter) {
for (int testIndex = 0; testIndex < coincidentTestSetCount - 1; testIndex += 2) {
coincidentTestOne(reporter, testIndex, testIndex + 1);
}
}
static void intersectionFinder(int test1, int test2) {
const SkDQuad& quad1 = testSet[test1];
const SkDQuad& quad2 = testSet[test2];
double t1Seed = 0.5;
double t2Seed = 0.8;
double t1Step = 0.1;
double t2Step = 0.1;
SkDPoint t1[3], t2[3];
bool toggle = true;
do {
t1[0] = quad1.ptAtT(t1Seed - t1Step);
t1[1] = quad1.ptAtT(t1Seed);
t1[2] = quad1.ptAtT(t1Seed + t1Step);
t2[0] = quad2.ptAtT(t2Seed - t2Step);
t2[1] = quad2.ptAtT(t2Seed);
t2[2] = quad2.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 = quad1.ptAtT(t10);
t10 += t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
t1Step = 0.1;
while (!approximately_zero(t1Step)) {
test = quad1.ptAtT(t12);
t12 -= t1[1].approximatelyEqual(test) ? -t1Step : t1Step;
t1Step /= 2;
}
while (!approximately_zero(t2Step)) {
test = quad2.ptAtT(t20);
t20 += t2[1].approximatelyEqual(test) ? -t2Step : t2Step;
t2Step /= 2;
}
t2Step = 0.1;
while (!approximately_zero(t2Step)) {
test = quad2.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 = quad1.ptAtT(t10);
SkDPoint p1Seed = quad1.ptAtT(t1Seed);
SkDPoint p12 = quad1.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 = quad2.ptAtT(t20);
SkDPoint p2Seed = quad2.ptAtT(t2Seed);
SkDPoint p22 = quad2.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 QuadraticIntersection_IntersectionFinder() {
intersectionFinder(0, 1);
}
DEF_TEST(PathOpsQuadIntersectionOneOff, reporter) {
oneOffTest1(reporter, 0, 1);
}
DEF_TEST(PathOpsQuadIntersectionCoincidenceOneOff, reporter) {
coincidentTestOne(reporter, 0, 1);
}
DEF_TEST(PathOpsQuadIntersection, reporter) {
oneOffTests(reporter);
coincidentTest(reporter);
standardTestCases(reporter);
if (false) QuadraticIntersection_IntersectionFinder();
}
#include "SkCommonFlags.h"
DEF_TEST(PathOpsQuadBinaryProfile, reporter) {
if (!FLAGS_veryVerbose) {
return;
}
SkIntersections intersections;
for (int x = 0; x < 100; ++x) {
int outer = 0;
int inner = outer + 1;
do {
const SkDQuad& quad1 = testSet[outer];
const SkDQuad& quad2 = testSet[inner];
(void) intersections.intersect(quad1, quad2);
REPORTER_ASSERT(reporter, intersections.used() >= 0); // make sure code isn't tossed
inner += 2;
outer += 2;
} while (outer < (int) testSetCount);
}
for (int x = 0; x < 100; ++x) {
for (size_t test = 0; test < quadraticTests_count; ++test) {
const SkDQuad& quad1 = quadraticTests[test][0];
const SkDQuad& quad2 = quadraticTests[test][1];
(void) intersections.intersect(quad1, quad2);
REPORTER_ASSERT(reporter, intersections.used() >= 0); // make sure code isn't tossed
}
}
}
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