| /* |
| * 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 "SkIntersections.h" |
| #include "SkPathOpsRect.h" |
| #include "SkReduceOrder.h" |
| #include "Test.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 SkDCubic& cubic1 = tests[index][0]; |
| const SkDCubic& cubic2 = tests[index][1]; |
| SkReduceOrder reduce1, reduce2; |
| int order1 = reduce1.reduce(cubic1, SkReduceOrder::kNo_Quadratics, |
| SkReduceOrder::kFill_Style); |
| int order2 = reduce2.reduce(cubic2, SkReduceOrder::kNo_Quadratics, |
| SkReduceOrder::kFill_Style); |
| 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(cubic1, cubic2); |
| 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 = cubic1.xyAtT(tt1); |
| double tt2 = tIntersections[1][pt]; |
| SkDPoint xy2 = cubic2.xyAtT(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)); |
| } |
| } |
| } |
| |
| static const SkDCubic 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 size_t testSetCount = SK_ARRAY_COUNT(testSet); |
| |
| static const SkDCubic newTestSet[] = { |
| {{{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 size_t newTestSetCount = SK_ARRAY_COUNT(newTestSet); |
| |
| static void oneOff(skiatest::Reporter* reporter, const SkDCubic& cubic1, const SkDCubic& cubic2) { |
| #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 |
| SkTArray<SkDQuad, true> quads1; |
| CubicToQuads(cubic1, cubic1.calcPrecision(), quads1); |
| #if ONE_OFF_DEBUG |
| SkDebugf("computed quadratics set 1\n"); |
| for (int index = 0; index < quads1.count(); ++index) { |
| const SkDQuad& q = quads1[index]; |
| SkDebugf(" {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", q[0].fX, q[0].fY, |
| q[1].fX, q[1].fY, q[2].fX, q[2].fY); |
| } |
| #endif |
| SkTArray<SkDQuad, true> quads2; |
| CubicToQuads(cubic2, cubic2.calcPrecision(), quads2); |
| #if ONE_OFF_DEBUG |
| SkDebugf("computed quadratics set 2\n"); |
| for (int index = 0; index < quads2.count(); ++index) { |
| const SkDQuad& q = quads2[index]; |
| SkDebugf(" {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", q[0].fX, q[0].fY, |
| q[1].fX, q[1].fY, q[2].fX, q[2].fY); |
| } |
| #endif |
| SkIntersections intersections; |
| intersections.intersect(cubic1, cubic2); |
| double tt1, tt2; |
| SkDPoint xy1, xy2; |
| for (int pt3 = 0; pt3 < intersections.used(); ++pt3) { |
| tt1 = intersections[0][pt3]; |
| xy1 = cubic1.xyAtT(tt1); |
| tt2 = intersections[1][pt3]; |
| xy2 = cubic2.xyAtT(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)); |
| } |
| } |
| |
| static void oneOff(skiatest::Reporter* reporter, int outer, int inner) { |
| const SkDCubic& cubic1 = testSet[outer]; |
| const SkDCubic& cubic2 = testSet[inner]; |
| oneOff(reporter, cubic1, cubic2); |
| } |
| |
| static void newOneOff(skiatest::Reporter* reporter, int outer, int inner) { |
| const SkDCubic& cubic1 = newTestSet[outer]; |
| const SkDCubic& cubic2 = newTestSet[inner]; |
| oneOff(reporter, cubic1, cubic2); |
| } |
| |
| static void oneOffTest(skiatest::Reporter* reporter) { |
| newOneOff(reporter, 0, 1); |
| oneOff(reporter, 14, 16); |
| } |
| |
| static void oneOffTests(skiatest::Reporter* reporter) { |
| for (size_t outer = 0; outer < testSetCount - 1; ++outer) { |
| for (size_t inner = outer + 1; inner < testSetCount; ++inner) { |
| oneOff(reporter, outer, inner); |
| } |
| } |
| for (size_t outer = 0; outer < newTestSetCount - 1; ++outer) { |
| for (size_t inner = outer + 1; inner < newTestSetCount; ++inner) { |
| oneOff(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) { |
| SkDCubic cubic1, cubic2; |
| for (int i = 0; i < 4; ++i) { |
| cubic1[i].fX = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100; |
| cubic1[i].fY = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100; |
| cubic2[i].fX = static_cast<double>(SK_RAND(seed)) / RAND_MAX * 100; |
| cubic2[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; |
| rect1.setBounds(cubic1); |
| rect2.setBounds(cubic2); |
| 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(cubic1, cubic2); |
| 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 = cubic1.xyAtT(tt1); |
| double tt2 = intersections2[1][pt]; |
| SkDPoint xy2 = cubic2.xyAtT(tt2); |
| REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2)); |
| } |
| } |
| } |
| |
| static void intersectionFinder(int index0, int index1, double t1Seed, double t2Seed, |
| double t1Step, double t2Step) { |
| const SkDCubic& cubic1 = newTestSet[index0]; |
| const SkDCubic& cubic2 = newTestSet[index1]; |
| SkDPoint t1[3], t2[3]; |
| bool toggle = true; |
| do { |
| t1[0] = cubic1.xyAtT(t1Seed - t1Step); |
| t1[1] = cubic1.xyAtT(t1Seed); |
| t1[2] = cubic1.xyAtT(t1Seed + t1Step); |
| t2[0] = cubic2.xyAtT(t2Seed - t2Step); |
| t2[1] = cubic2.xyAtT(t2Seed); |
| t2[2] = cubic2.xyAtT(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 = cubic1.xyAtT(t10); |
| t10 += t1[1].approximatelyEqual(test) ? -t1Step : t1Step; |
| t1Step /= 2; |
| } |
| t1Step = 0.1; |
| while (!approximately_zero(t1Step)) { |
| test = cubic1.xyAtT(t12); |
| t12 -= t1[1].approximatelyEqual(test) ? -t1Step : t1Step; |
| t1Step /= 2; |
| } |
| while (!approximately_zero(t2Step)) { |
| test = cubic2.xyAtT(t20); |
| t20 += t2[1].approximatelyEqual(test) ? -t2Step : t2Step; |
| t2Step /= 2; |
| } |
| t2Step = 0.1; |
| while (!approximately_zero(t2Step)) { |
| test = cubic2.xyAtT(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 = cubic1.xyAtT(t10); |
| SkDPoint p1Seed = cubic1.xyAtT(t1Seed); |
| SkDPoint p12 = cubic1.xyAtT(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 = cubic2.xyAtT(t20); |
| SkDPoint p2Seed = cubic2.xyAtT(t2Seed); |
| SkDPoint p22 = cubic2.xyAtT(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 void cubicIntersectionSelfTest(skiatest::Reporter* reporter) { |
| const SkDCubic selfSet[] = { |
| {{{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}}}, |
| }; |
| size_t selfSetCount = SK_ARRAY_COUNT(selfSet); |
| size_t firstFail = 1; |
| for (size_t index = firstFail; index < selfSetCount; ++index) { |
| const SkDCubic& cubic = selfSet[index]; |
| #if ONE_OFF_DEBUG |
| int idx2; |
| double max[3]; |
| int ts = cubic.findMaxCurvature(max); |
| for (idx2 = 0; idx2 < ts; ++idx2) { |
| SkDebugf("%s max[%d]=%1.9g (%1.9g, %1.9g)\n", __FUNCTION__, idx2, |
| max[idx2], cubic.xyAtT(max[idx2]).fX, cubic.xyAtT(max[idx2]).fY); |
| } |
| SkTArray<double, true> ts1; |
| SkTArray<SkDQuad, true> quads1; |
| cubic.toQuadraticTs(cubic.calcPrecision(), &ts1); |
| for (idx2 = 0; idx2 < ts1.count(); ++idx2) { |
| SkDebugf("%s t[%d]=%1.9g\n", __FUNCTION__, idx2, ts1[idx2]); |
| } |
| CubicToQuads(cubic, cubic.calcPrecision(), quads1); |
| for (idx2 = 0; idx2 < quads1.count(); ++idx2) { |
| const SkDQuad& q = quads1[idx2]; |
| SkDebugf(" {{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}}},\n", |
| q[0].fX, q[0].fY, q[1].fX, q[1].fY, q[2].fX, q[2].fY); |
| } |
| SkDebugf("\n"); |
| #endif |
| SkIntersections i; |
| int result = i.intersect(cubic); |
| REPORTER_ASSERT(reporter, result == 1); |
| REPORTER_ASSERT(reporter, i.used() == 1); |
| REPORTER_ASSERT(reporter, !approximately_equal(i[0][0], i[1][0])); |
| SkDPoint pt1 = cubic.xyAtT(i[0][0]); |
| SkDPoint pt2 = cubic.xyAtT(i[1][0]); |
| REPORTER_ASSERT(reporter, pt1.approximatelyEqual(pt2)); |
| } |
| } |
| |
| static void PathOpsCubicIntersectionTest(skiatest::Reporter* reporter) { |
| oneOffTest(reporter); |
| oneOffTests(reporter); |
| cubicIntersectionSelfTest(reporter); |
| standardTestCases(reporter); |
| if (false) CubicIntersection_IntersectionFinder(); |
| if (false) CubicIntersection_RandTest(reporter); |
| } |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS_SHORT(PathOpsCubicIntersectionTest) |