| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "PathOpsTestCommon.h" |
| #include "SkOpSegment.h" |
| #include "SkTArray.h" |
| #include "Test.h" |
| |
| static const SkPoint cubics[][4] = { |
| /* 0 */ {{0, 1}, {2, 6}, {4, 2}, {5, 3}}, |
| /* 1 */ {{10, 234}, {10, 229.581726f}, {13.5817204f, 226}, {18, 226}}, |
| /* 2 */ {{132, 11419}, {130.89543151855469f, 11419}, {130, 11418.1044921875f}, {130, 11417}}, |
| /* 3 */ {{130.04275512695312f, 11417.4130859375f}, {130.23307800292969f, 11418.3193359375f}, |
| {131.03709411621094f, 11419}, {132, 11419}}, |
| /* 4 */ {{0,1}, {0,5}, {4,1}, {6,4}}, |
| /* 5 */ {{1,5}, {4,6}, {1,0}, {4,0}}, |
| /* 6 */ {{0,1}, {0,4}, {5,1}, {6,4}}, |
| /* 7 */ {{0,1}, {1,2}, {1,0}, {6,1}}, |
| /* 8 */ {{0,3}, {0,1}, {2,0}, {1,0}}, |
| /* 9 */ {{189,7}, {189,5.3431458473205566f}, {190.3431396484375f,4}, {192,4}}, |
| /* 10 */ {{0,1}, {1,3}, {1,0}, {6,4}}, |
| /* 11 */ {{0,1}, {2,3}, {2,1}, {4,3}}, |
| /* 12 */ {{1,2}, {3,4}, {1,0}, {3,2}}, |
| /* 13 */ {{0,1}, {4,6}, {4,3}, {5,4}}, |
| /* 14 */ {{806,11419}, {806.962890625f,11419}, {807.76690673828125f,11418.3193359375f}, {807.957275390625f,11417.4130859375f}}, |
| /* 15 */ {{808,11417}, {808,11418.1044921875f}, {807.10455322265625f,11419}, {806,11419}}, |
| /* 16 */ {{132,11419}, {130.89543151855469f,11419}, {130,11418.1044921875f}, {130,11417}}, |
| /* 17 */ {{130.04275512695312f,11417.4130859375f}, {130.23312377929687f,11418.3193359375f}, {131.03707885742187f,11419}, {132,11419}}, |
| /* 18 */ {{1006.6951293945312f,291}, {1023.263671875f,291}, {1033.8402099609375f,304.43145751953125f}, {1030.318359375f,321}}, |
| }; |
| |
| static const SkPoint quads[][3] = { |
| /* 0 */ {{12.3423996f, 228.342407f}, {10, 230.686295f}, {10, 234}}, |
| /* 1 */ {{304.24319458007812f,591.75677490234375f}, {306,593.51470947265625f}, {306,596}}, |
| /* 2 */ {{0,0}, {3,1}, {0,3}}, |
| /* 3 */ {{0,1}, {3,1}, {0,2}}, |
| }; |
| |
| static const SkPoint lines[][2] = { |
| /* 0 */ {{6, 2}, {2, 4}}, |
| /* 1 */ {{306,617}, {306,590}}, |
| /* 2 */ {{306,596}, {306,617}}, |
| /* 3 */ {{6,4}, {0,1}}, |
| /* 4 */ {{6,1}, {0,1}}, |
| /* 5 */ {{1,0}, {0,3}}, |
| /* 6 */ {{246,4}, {189,4}}, |
| /* 7 */ {{192,4}, {243,4}}, |
| /* 8 */ {{4,3}, {0,1}}, |
| /* 9 */ {{3,2}, {1,2}}, |
| /* 10 */ {{6,4}, {3,4}}, |
| /* 11 */ {{979.30487060546875f,561}, {1036.695068359375f,291}}, |
| }; |
| |
| struct SortSet { |
| const SkPoint* ptData; |
| int ptCount; |
| double tStart; |
| double tEnd; |
| SkPoint endPt; |
| }; |
| |
| /*static const SortSet set1[] = { |
| {cubics[0], 4, 0.66666987081928919, 0.875, {0, 0}}, |
| {lines[0], 2, 0.574070336, 0.388888889, {0, 0}}, |
| {cubics[0], 4, 0.66666987081928919, 0.4050371120499307, {0, 0}}, |
| {lines[0], 2, 0.574070336, 0.9140625, {0, 0}}, |
| }; |
| |
| static const SortSet set1a[] = { |
| {cubics[0], 4, 0.666666667, 0.405037112, {4.58007812f,2.83203125f}}, |
| {lines[0], 2, 0.574074074, 0.9140625, {4.44444466f,2.77777767f}}, |
| };*/ |
| |
| static const SortSet set2[] = { |
| {cubics[0], 4, 0.666666667, 0.875, {0, 0}}, |
| {lines[0], 2, 0.574074074, 0.388888889, {0, 0}}, |
| {cubics[0], 4, 0.666666667, 0.405037112, {0, 0}}, |
| {lines[0], 2, 0.574074074, 0.9140625, {0, 0}}, |
| }; |
| |
| static const SortSet set3[] = { |
| {cubics[1], 4, 0, 1, {0, 0}}, |
| {quads[0], 3, 1, 0, {0, 0}}, |
| }; |
| |
| /*static const SortSet set4[] = { |
| {cubics[2], 4, 0.812114222, 1, {0, 0}}, |
| {cubics[3], 4, 0.0684734759, 0, {0, 0}}, |
| };*/ |
| |
| static const SortSet set5[] = { |
| {lines[1], 2, 0.777777778, 1, {0, 0}}, |
| {quads[1], 3, 1, 4.34137342e-06, {0, 0}}, |
| {lines[2], 2, 0, 1, {0, 0}}, |
| }; |
| |
| static const SortSet set5a[] = { |
| {lines[1], 2, 0.777777778, 1, {306,590}}, |
| {quads[1], 3, 1, 4.34137342e-06, {304.243195f,591.756775f}}, |
| {lines[2], 2, 0, 1, {306,617}}, |
| }; |
| |
| static const SortSet set6[] = { |
| {lines[3], 2, 0.407407407, 0.554627832, {0, 0}}, |
| {cubics[4], 4, 0.666666667, 0.548022446, {0, 0}}, |
| {lines[3], 2, 0.407407407, 0, {0, 0}}, |
| {cubics[4], 4, 0.666666667, 1, {0, 0}}, |
| }; |
| |
| static const SortSet set6a[] = { |
| {lines[3], 2, 0.407407407, 0.554627832, {2.6722331f,2.33611655f}}, |
| {cubics[4], 4, 0.666666667, 0.548022446, {2.61642241f,2.83718514f}}, |
| {lines[3], 2, 0.407407407, 0, {6,4}}, |
| {cubics[4], 4, 0.666666667, 1, {6,4}}, |
| }; |
| |
| static const SortSet set7[] = { |
| {cubics[5], 4, 0.545233342, 0.545454545, {0, 0}}, |
| {cubics[6], 4, 0.484938134, 0.484805744, {0, 0}}, |
| {cubics[5], 4, 0.545233342, 0, {0, 0}}, |
| {cubics[6], 4, 0.484938134, 0.545454545, {0, 0}}, |
| }; |
| |
| static const SortSet set8[] = { |
| {cubics[7], 4, 0.5, 0.522986744, {0, 0}}, |
| {lines[4], 2, 0.75, 1, {0, 0}}, |
| {cubics[7], 4, 0.5, 0, {0, 0}}, |
| {lines[4], 2, 0.75, 0.737654321, {0, 0}}, |
| }; |
| |
| static const SortSet set8a[] = { |
| {cubics[7], 4, 0.5, 0.522986744, {1.60668361f,0.965592742f}}, |
| {lines[4], 2, 0.75, 1, {0,1}}, |
| {cubics[7], 4, 0.5, 0, {0,1}}, |
| {lines[4], 2, 0.75, 0.737654321, {1.57407403f,1}}, |
| }; |
| |
| static const SortSet set9[] = { |
| {cubics[8], 4, 0.4, 1, {0, 0}}, |
| {lines[5], 2, 0.36, 0, {0, 0}}, |
| {cubics[8], 4, 0.4, 0.394675838, {0, 0}}, |
| {lines[5], 2, 0.36, 0.363999782, {0, 0}}, |
| }; |
| |
| static const SortSet set10[] = { |
| {lines[6], 2, 0.947368421, 1, {0, 0}}, |
| {cubics[9], 4, 1, 0.500000357, {0, 0}}, |
| {lines[7], 2, 0, 1, {0, 0}}, |
| }; |
| |
| static const SortSet set11[] = { |
| {lines[3], 2, 0.75, 1, {0, 0}}, |
| {cubics[10], 4, 0.5, 0.228744269, {0, 0}}, |
| {lines[3], 2, 0.75, 0.627112191, {0, 0}}, |
| {cubics[10], 4, 0.5, 0.6339746, {0, 0}}, |
| }; |
| |
| static const SortSet set12[] = { |
| {cubics[12], 4, 0.5, 1, {0, 0}}, |
| {lines[8], 2, 0.5, 1, {0, 0}}, |
| {cubics[11], 4, 0.5, 0, {0, 0}}, |
| {lines[9], 2, 0.5, 1, {0, 0}}, |
| {cubics[12], 4, 0.5, 0, {0, 0}}, |
| {lines[8], 2, 0.5, 0, {0, 0}}, |
| {cubics[11], 4, 0.5, 1, {0, 0}}, |
| {lines[9], 2, 0.5, 0, {0, 0}}, |
| }; |
| |
| /*static const SortSet set13[] = { |
| {cubics[13], 4, 0.5, 0.400631046, {0, 0}}, |
| {lines[10], 2, 0.791666667, 0.928, {0, 0}}, |
| {lines[10], 2, 0.791666667, 0.333333333, {0, 0}}, |
| {cubics[13], 4, 0.5, 0.866666667, {0, 0}}, |
| };*/ |
| |
| static const SortSet set14[] = { |
| {quads[2], 3, 0.5, 0.310102051, {0, 0}}, |
| {quads[3], 3, 0.5, 0.2, {0, 0}}, |
| {quads[3], 3, 0.5, 0.770156212, {0, 0}}, |
| {quads[2], 3, 0.5, 0.7, {0, 0}}, |
| }; |
| |
| /*static const SortSet set15[] = { |
| {cubics[14], 4, 0.93081374, 1, {0, 0}}, |
| {cubics[15], 4, 0.188518131, 0, {0, 0}}, |
| {cubics[14], 4, 0.93081374, 0, {0, 0}}, |
| };*/ |
| |
| static const SortSet set16[] = { |
| {cubics[17], 4, 0.0682619216, 0, {130.042755f,11417.4131f}}, |
| {cubics[16], 4, 0.812302088, 1, {130,11417}}, |
| {cubics[17], 4, 0.0682619216, 1, {132,11419}}, |
| }; |
| |
| static const SortSet set17[] = { |
| {lines[11], 2, 0.888889581, 1, {0, 0}}, |
| {cubics[18], 4, 0.999996241, 0, {0, 0}}, |
| {lines[11], 2, 0.888889581, 0, {0, 0}}, |
| {cubics[18], 4, 0.999996241, 1, {0, 0}}, |
| }; |
| |
| struct SortSetTests { |
| const char* name; |
| const SortSet* set; |
| size_t count; |
| SkPoint startPt; |
| }; |
| |
| #define TEST_ENTRY(name) #name, name, SK_ARRAY_COUNT(name) |
| |
| static const SortSetTests tests[] = { |
| { TEST_ENTRY(set17), {0, 0}}, |
| { TEST_ENTRY(set16), {130.090179f,11417.5957f} }, |
| // { TEST_ENTRY(set15), {0, 0}}, |
| { TEST_ENTRY(set14), {0, 0}}, |
| // { TEST_ENTRY(set13), {0, 0}}, |
| { TEST_ENTRY(set12), {0, 0}}, |
| { TEST_ENTRY(set11), {0, 0}}, |
| { TEST_ENTRY(set10), {0, 0}}, |
| { TEST_ENTRY(set9), {0, 0}}, |
| { TEST_ENTRY(set6a), {3.55555558f,2.77777767f} }, |
| { TEST_ENTRY(set8a), {1.5f,1} }, |
| { TEST_ENTRY(set8), {0, 0}}, |
| { TEST_ENTRY(set7), {0, 0}}, |
| { TEST_ENTRY(set6a), {3.55555558f,2.77777767f} }, |
| { TEST_ENTRY(set6), {0, 0}}, |
| { TEST_ENTRY(set5a), {306,596} }, |
| { TEST_ENTRY(set5), {0, 0}}, |
| // { TEST_ENTRY(set4), {0, 0}}, |
| { TEST_ENTRY(set3), {0, 0}}, |
| { TEST_ENTRY(set2), {0, 0}}, |
| // { TEST_ENTRY(set1a), {3.70370364f,3.14814806f} }, |
| // { TEST_ENTRY(set1), {0, 0}}, |
| }; |
| |
| #undef TEST_ENTRY |
| |
| static void setup(const SortSet* set, const size_t idx, |
| SkOpSegment* seg, int* ts, const SkPoint& startPt) { |
| SkPoint start, end; |
| const SkPoint* data = set[idx].ptData; |
| bool useIntersectPt = startPt.fX != 0 || startPt.fY != 0; |
| if (useIntersectPt) { |
| start = startPt; |
| end = set[idx].endPt; |
| } |
| switch(set[idx].ptCount) { |
| case 2: { |
| SkASSERT(ValidPoints(data, 2)); |
| seg->addLine(data, false, false); |
| SkDLine dLine; |
| dLine.set(set[idx].ptData); |
| SkASSERT(ValidLine(dLine)); |
| if (useIntersectPt) { |
| break; |
| } |
| start = dLine.ptAtT(set[idx].tStart).asSkPoint(); |
| end = dLine.ptAtT(set[idx].tEnd).asSkPoint(); |
| } break; |
| case 3: { |
| SkASSERT(ValidPoints(data, 3)); |
| seg->addQuad(data, false, false); |
| SkDQuad dQuad; |
| dQuad.set(set[idx].ptData); |
| SkASSERT(ValidQuad(dQuad)); |
| if (useIntersectPt) { |
| break; |
| } |
| start = dQuad.ptAtT(set[idx].tStart).asSkPoint(); |
| end = dQuad.ptAtT(set[idx].tEnd).asSkPoint(); |
| } break; |
| case 4: { |
| SkASSERT(ValidPoints(data, 4)); |
| seg->addCubic(data, false, false); |
| SkDCubic dCubic; |
| dCubic.set(set[idx].ptData); |
| SkASSERT(ValidCubic(dCubic)); |
| if (useIntersectPt) { |
| break; |
| } |
| start = dCubic.ptAtT(set[idx].tStart).asSkPoint(); |
| end = dCubic.ptAtT(set[idx].tEnd).asSkPoint(); |
| } break; |
| } |
| double tStart = set[idx].tStart; |
| double tEnd = set[idx].tEnd; |
| seg->addT(NULL, start, tStart); |
| seg->addT(NULL, end, tEnd); |
| if (tStart != 0 && tEnd != 0) { |
| seg->addT(NULL, set[idx].ptData[0], 0); |
| } |
| if (tStart != 1 && tEnd != 1) { |
| seg->addT(NULL, set[idx].ptData[set[idx].ptCount - 1], 1); |
| } |
| int tIndex = 0; |
| ts[0] = 0; |
| ts[1] = 1; |
| do { |
| if (seg->t(tIndex) == set[idx].tStart) { |
| ts[0] = tIndex; |
| } |
| if (seg->t(tIndex) == set[idx].tEnd) { |
| ts[1] = tIndex; |
| } |
| if (seg->t(tIndex) >= 1) { |
| break; |
| } |
| } while (++tIndex); |
| } |
| |
| static void testOne(skiatest::Reporter* reporter, const SortSetTests& test) { |
| SkTDArray<SkOpAngle> angles; |
| bool unsortable = false; |
| bool unorderable = false; |
| SkTArray<SkOpSegment> segs; |
| for (size_t idx = 0; idx < test.count; ++idx) { |
| int ts[2]; |
| const SortSet* set = test.set; |
| SkOpSegment& seg = segs.push_back(); |
| setup(set, idx, &seg, ts, test.startPt); |
| SkOpAngle* angle = angles.append(); |
| angle->set(&seg, ts[0], ts[1]); |
| #if DEBUG_ANGLE |
| angle->setID(idx); |
| #endif |
| if (angle->unsortable()) { |
| #if DEBUG_ANGLE |
| SkDebugf("%s test[%s]: angle[%d] unsortable\n", __FUNCTION__, test.name, idx); |
| #endif |
| unsortable = true; |
| } |
| if (angle->unorderable()) { |
| #if DEBUG_ANGLE |
| SkDebugf("%s test[%s]: angle[%d] unorderable\n", __FUNCTION__, test.name, idx); |
| #endif |
| unorderable = true; |
| } |
| reporter->bumpTestCount(); |
| } |
| if (unsortable || unorderable) { |
| return; |
| } |
| #if DEBUG_ANGLE |
| SkDebugf("%s test[%s]\n", __FUNCTION__, test.name); |
| #endif |
| for (size_t idxL = 0; idxL < test.count; ++idxL) { |
| const SkOpAngle& first = angles[idxL]; |
| for (size_t idxG = 0; idxG < test.count; ++idxG) { |
| if (idxL == idxG) { |
| continue; |
| } |
| const SkOpAngle& second = angles[idxG]; |
| bool compare = first < second; |
| if (idxL < idxG) { |
| if (!compare) { |
| SkDebugf("%s test[%s]: first[%d] > second[%d]\n", __FUNCTION__, |
| test.name, idxL, idxG); |
| compare = first < second; |
| } |
| REPORTER_ASSERT(reporter, compare); |
| } else { |
| SkASSERT(idxL > idxG); |
| if (compare) { |
| SkDebugf("%s test[%s]: first[%d] < second[%d]\n", __FUNCTION__, |
| test.name, idxL, idxG); |
| compare = first < second; |
| } |
| REPORTER_ASSERT(reporter, !compare); |
| } |
| compare = second < first; |
| if (idxL < idxG) { |
| if (compare) { |
| SkDebugf("%s test[%s]: second[%d] < first[%d]\n", __FUNCTION__, |
| test.name, idxL, idxG); |
| compare = second < first; |
| } |
| REPORTER_ASSERT(reporter, !compare); |
| } else { |
| SkASSERT(idxL > idxG); |
| if (!compare) { |
| SkDebugf("%s test[%s]: second[%d] > first[%d]\n", __FUNCTION__, |
| test.name, idxL, idxG); |
| compare = second < first; |
| } |
| REPORTER_ASSERT(reporter, compare); |
| } |
| } |
| } |
| } |
| |
| static void PathOpsAngleTest(skiatest::Reporter* reporter) { |
| for (size_t index = 0; index < SK_ARRAY_COUNT(tests); ++index) { |
| const SortSetTests& test = tests[index]; |
| testOne(reporter, test); |
| reporter->bumpTestCount(); |
| } |
| } |
| |
| static void PathOpsAngleTestOne(skiatest::Reporter* reporter) { |
| size_t index = 0; |
| const SortSetTests& test = tests[index]; |
| testOne(reporter, test); |
| } |
| |
| #if 0 |
| static int find_slop(double x, double y, double rx, double ry) { |
| int slopBits = 0; |
| bool less1, less2; |
| double absX = fabs(x); |
| double absY = fabs(y); |
| double length = absX < absY ? absX / 2 + absY : absX + absY / 2; |
| int exponent; |
| (void) frexp(length, &exponent); |
| double epsilon = ldexp(FLT_EPSILON, exponent); |
| do { |
| // get the length as the larger plus half the smaller (both same signs) |
| // find the ulps of the length |
| // compute the offsets from there |
| double xSlop = epsilon * slopBits; |
| double ySlop = x * y < 0 ? -xSlop : xSlop; // OPTIMIZATION: use copysign / _copysign ? |
| double x1 = x - xSlop; |
| double y1 = y + ySlop; |
| double x_ry1 = x1 * ry; |
| double rx_y1 = rx * y1; |
| less1 = x_ry1 < rx_y1; |
| double x2 = x + xSlop; |
| double y2 = y - ySlop; |
| double x_ry2 = x2 * ry; |
| double rx_y2 = rx * y2; |
| less2 = x_ry2 < rx_y2; |
| } while (less1 == less2 && ++slopBits); |
| return slopBits; |
| } |
| |
| // from http://stackoverflow.com/questions/1427422/cheap-algorithm-to-find-measure-of-angle-between-vectors |
| static double diamond_angle(double y, double x) |
| { |
| if (y >= 0) |
| return (x >= 0 ? y/(x+y) : 1-x/(-x+y)); |
| else |
| return (x < 0 ? 2-y/(-x-y) : 3+x/(x-y)); |
| } |
| |
| static const double slopTests[][4] = { |
| // x y rx ry |
| {-0.058554756452593892, -0.18804585843827226, -0.018568569646021160, -0.059615294434479438}, |
| {-0.0013717412948608398, 0.0041152238845825195, -0.00045837944195925573, 0.0013753175735478074}, |
| {-2.1033774145221198, -1.4046019261273715e-008, -0.70062688352066704, -1.2706324683777995e-008}, |
| }; |
| |
| static void PathOpsAngleFindSlop(skiatest::Reporter* reporter) { |
| for (size_t index = 0; index < SK_ARRAY_COUNT(slopTests); ++index) { |
| const double* slopTest = slopTests[index]; |
| double x = slopTest[0]; |
| double y = slopTest[1]; |
| double rx = slopTest[2]; |
| double ry = slopTest[3]; |
| SkDebugf("%s xy %d=%d\n", __FUNCTION__, (int) index, find_slop(x, y, rx, ry)); |
| SkDebugf("%s rxy %d=%d\n", __FUNCTION__, (int) index, find_slop(rx, ry, x, y)); |
| double angle = diamond_angle(y, x); |
| double rAngle = diamond_angle(ry, rx); |
| double diff = fabs(angle - rAngle); |
| SkDebugf("%s diamond xy=%1.9g rxy=%1.9g diff=%1.9g factor=%d\n", __FUNCTION__, |
| angle, rAngle, diff, (int) (diff / FLT_EPSILON)); |
| |
| } |
| } |
| #endif |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS_SHORT(PathOpsAngleTest) |
| |
| DEFINE_TESTCLASS_SHORT(PathOpsAngleTestOne) |
| |
| // DEFINE_TESTCLASS_SHORT(PathOpsAngleFindSlop) |
