1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 #include "SkPath.h" 8 #include "SkPathOps.h" 9 #include "SkPoint.h" 10 #include "Test.h" 11 12 static const SkPoint nonFinitePts[] = { 13 { SK_ScalarInfinity, 0 }, 14 { 0, SK_ScalarInfinity }, 15 { SK_ScalarInfinity, SK_ScalarInfinity }, 16 { SK_ScalarNegativeInfinity, 0}, 17 { 0, SK_ScalarNegativeInfinity }, 18 { SK_ScalarNegativeInfinity, SK_ScalarNegativeInfinity }, 19 { SK_ScalarNegativeInfinity, SK_ScalarInfinity }, 20 { SK_ScalarInfinity, SK_ScalarNegativeInfinity }, 21 { SK_ScalarNaN, 0 }, 22 { 0, SK_ScalarNaN }, 23 { SK_ScalarNaN, SK_ScalarNaN }, 24 }; 25 26 const size_t nonFinitePtsCount = sizeof(nonFinitePts) / sizeof(nonFinitePts[0]); 27 28 static const SkPoint finitePts[] = { 29 { 0, 0 }, 30 { SK_ScalarMax, 0 }, 31 { 0, SK_ScalarMax }, 32 { SK_ScalarMax, SK_ScalarMax }, 33 { SK_ScalarMin, 0 }, 34 { 0, SK_ScalarMin }, 35 { SK_ScalarMin, SK_ScalarMin }, 36 }; 37 38 const size_t finitePtsCount = sizeof(finitePts) / sizeof(finitePts[0]); 39 40 static void failOne(skiatest::Reporter* reporter, int index) { 41 SkPath path; 42 int i = (int) (index % nonFinitePtsCount); 43 int f = (int) (index % finitePtsCount); 44 int g = (int) ((f + 1) % finitePtsCount); 45 switch (index % 13) { 46 case 0: path.lineTo(nonFinitePts[i]); break; 47 case 1: path.quadTo(nonFinitePts[i], nonFinitePts[i]); break; 48 case 2: path.quadTo(nonFinitePts[i], finitePts[f]); break; 49 case 3: path.quadTo(finitePts[f], nonFinitePts[i]); break; 50 case 4: path.cubicTo(nonFinitePts[i], finitePts[f], finitePts[f]); break; 51 case 5: path.cubicTo(finitePts[f], nonFinitePts[i], finitePts[f]); break; 52 case 6: path.cubicTo(finitePts[f], finitePts[f], nonFinitePts[i]); break; 53 case 7: path.cubicTo(nonFinitePts[i], nonFinitePts[i], finitePts[f]); break; 54 case 8: path.cubicTo(nonFinitePts[i], finitePts[f], nonFinitePts[i]); break; 55 case 9: path.cubicTo(finitePts[f], nonFinitePts[i], nonFinitePts[i]); break; 56 case 10: path.cubicTo(nonFinitePts[i], nonFinitePts[i], nonFinitePts[i]); break; 57 case 11: path.cubicTo(nonFinitePts[i], finitePts[f], finitePts[g]); break; 58 case 12: path.moveTo(nonFinitePts[i]); break; 59 } 60 SkPath result; 61 result.setFillType(SkPath::kWinding_FillType); 62 bool success = Simplify(path, &result); 63 REPORTER_ASSERT(reporter, !success); 64 REPORTER_ASSERT(reporter, result.isEmpty()); 65 REPORTER_ASSERT(reporter, result.getFillType() == SkPath::kWinding_FillType); 66 reporter->bumpTestCount(); 67 } 68 69 static void dontFailOne(skiatest::Reporter* reporter, int index) { 70 SkPath path; 71 int f = (int) (index % finitePtsCount); 72 int g = (int) ((f + 1) % finitePtsCount); 73 switch (index % 11) { 74 case 0: path.lineTo(finitePts[f]); break; 75 case 1: path.quadTo(finitePts[f], finitePts[f]); break; 76 case 2: path.quadTo(finitePts[f], finitePts[g]); break; 77 case 3: path.quadTo(finitePts[g], finitePts[f]); break; 78 case 4: path.cubicTo(finitePts[f], finitePts[f], finitePts[f]); break; 79 case 5: path.cubicTo(finitePts[f], finitePts[f], finitePts[g]); break; 80 case 6: path.cubicTo(finitePts[f], finitePts[g], finitePts[f]); break; 81 case 7: path.cubicTo(finitePts[f], finitePts[g], finitePts[g]); break; 82 case 8: path.cubicTo(finitePts[g], finitePts[f], finitePts[f]); break; 83 case 9: path.cubicTo(finitePts[g], finitePts[f], finitePts[g]); break; 84 case 10: path.moveTo(finitePts[f]); break; 85 } 86 SkPath result; 87 result.setFillType(SkPath::kWinding_FillType); 88 bool success = Simplify(path, &result); 89 if (index != 17 && index != 31 && index != 38) { // cubic fails to chop in two without creating NaNs 90 REPORTER_ASSERT(reporter, success); 91 REPORTER_ASSERT(reporter, result.getFillType() != SkPath::kWinding_FillType); 92 } 93 reporter->bumpTestCount(); 94 } 95 96 DEF_TEST(PathOpsSimplifyFail, reporter) { 97 for (int index = 0; index < (int) (13 * nonFinitePtsCount * finitePtsCount); ++index) { 98 failOne(reporter, index); 99 } 100 for (int index = 0; index < (int) (11 * finitePtsCount); ++index) { 101 dontFailOne(reporter, index); 102 } 103 } 104 105 DEF_TEST(PathOpsSimplifyFailOne, reporter) { 106 int index = 0; 107 failOne(reporter, index); 108 } 109 110 DEF_TEST(PathOpsSimplifyDontFailOne, reporter) { 111 int index = 17; 112 dontFailOne(reporter, index); 113 } 114
