reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "include/core/SkPaint.h" |
| 9 | #include "include/core/SkPath.h" |
| 10 | #include "include/core/SkRect.h" |
| 11 | #include "include/core/SkStrokeRec.h" |
Mike Reed | 430470d | 2019-09-12 17:09:12 -0400 | [diff] [blame] | 12 | #include "src/core/SkPathPriv.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 13 | #include "src/core/SkStroke.h" |
| 14 | #include "tests/Test.h" |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 15 | |
| 16 | static bool equal(const SkRect& a, const SkRect& b) { |
| 17 | return SkScalarNearlyEqual(a.left(), b.left()) && |
| 18 | SkScalarNearlyEqual(a.top(), b.top()) && |
| 19 | SkScalarNearlyEqual(a.right(), b.right()) && |
| 20 | SkScalarNearlyEqual(a.bottom(), b.bottom()); |
| 21 | } |
| 22 | |
caryclark | 63c684a | 2015-02-25 09:04:04 -0800 | [diff] [blame] | 23 | static void test_strokecubic(skiatest::Reporter* reporter) { |
| 24 | uint32_t hexCubicVals[] = { |
| 25 | 0x424c1086, 0x44bcf0cb, // fX=51.0161362 fY=1511.52478 |
| 26 | 0x424c107c, 0x44bcf0cb, // fX=51.0160980 fY=1511.52478 |
| 27 | 0x424c10c2, 0x44bcf0cb, // fX=51.0163651 fY=1511.52478 |
| 28 | 0x424c1119, 0x44bcf0ca, // fX=51.0166969 fY=1511.52466 |
| 29 | }; |
| 30 | SkPoint cubicVals[] = { |
| 31 | {51.0161362f, 1511.52478f }, |
| 32 | {51.0160980f, 1511.52478f }, |
| 33 | {51.0163651f, 1511.52478f }, |
| 34 | {51.0166969f, 1511.52466f }, |
| 35 | }; |
| 36 | SkPaint paint; |
| 37 | |
| 38 | paint.setStyle(SkPaint::kStroke_Style); |
| 39 | paint.setStrokeWidth(0.394537568f); |
| 40 | SkPath path, fillPath; |
| 41 | path.moveTo(cubicVals[0]); |
| 42 | path.cubicTo(cubicVals[1], cubicVals[2], cubicVals[3]); |
| 43 | paint.getFillPath(path, &fillPath); |
| 44 | path.reset(); |
| 45 | path.moveTo(SkBits2Float(hexCubicVals[0]), SkBits2Float(hexCubicVals[1])); |
| 46 | path.cubicTo(SkBits2Float(hexCubicVals[2]), SkBits2Float(hexCubicVals[3]), |
| 47 | SkBits2Float(hexCubicVals[4]), SkBits2Float(hexCubicVals[5]), |
| 48 | SkBits2Float(hexCubicVals[6]), SkBits2Float(hexCubicVals[7])); |
| 49 | paint.getFillPath(path, &fillPath); |
| 50 | } |
| 51 | |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 52 | static void test_strokerect(skiatest::Reporter* reporter) { |
| 53 | const SkScalar width = SkIntToScalar(10); |
| 54 | SkPaint paint; |
| 55 | |
| 56 | paint.setStyle(SkPaint::kStroke_Style); |
| 57 | paint.setStrokeWidth(width); |
| 58 | |
| 59 | SkRect r = { 0, 0, SkIntToScalar(200), SkIntToScalar(100) }; |
| 60 | |
| 61 | SkRect outer(r); |
| 62 | outer.outset(width/2, width/2); |
| 63 | |
| 64 | static const SkPaint::Join joins[] = { |
| 65 | SkPaint::kMiter_Join, SkPaint::kRound_Join, SkPaint::kBevel_Join |
| 66 | }; |
| 67 | |
| 68 | for (size_t i = 0; i < SK_ARRAY_COUNT(joins); ++i) { |
| 69 | paint.setStrokeJoin(joins[i]); |
| 70 | |
| 71 | SkPath path, fillPath; |
| 72 | path.addRect(r); |
| 73 | paint.getFillPath(path, &fillPath); |
| 74 | |
| 75 | REPORTER_ASSERT(reporter, equal(outer, fillPath.getBounds())); |
skia.committer@gmail.com | b0a327e | 2012-11-21 02:02:25 +0000 | [diff] [blame] | 76 | |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 77 | bool isMiter = SkPaint::kMiter_Join == joins[i]; |
| 78 | SkRect nested[2]; |
Mike Reed | 430470d | 2019-09-12 17:09:12 -0400 | [diff] [blame] | 79 | REPORTER_ASSERT(reporter, SkPathPriv::IsNestedFillRects(fillPath, nested) == isMiter); |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 80 | if (isMiter) { |
| 81 | SkRect inner(r); |
| 82 | inner.inset(width/2, width/2); |
| 83 | REPORTER_ASSERT(reporter, equal(nested[0], outer)); |
| 84 | REPORTER_ASSERT(reporter, equal(nested[1], inner)); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
kkinnunen | 8f827fe | 2015-05-13 00:02:26 -0700 | [diff] [blame] | 89 | static void test_strokerec_equality(skiatest::Reporter* reporter) { |
| 90 | { |
| 91 | SkStrokeRec s1(SkStrokeRec::kFill_InitStyle); |
| 92 | SkStrokeRec s2(SkStrokeRec::kFill_InitStyle); |
| 93 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 94 | |
| 95 | // Test that style mismatch is detected. |
| 96 | s2.setHairlineStyle(); |
| 97 | REPORTER_ASSERT(reporter, !s1.hasEqualEffect(s2)); |
| 98 | |
| 99 | s1.setHairlineStyle(); |
| 100 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 101 | |
| 102 | // ResScale is not part of equality. |
| 103 | s1.setResScale(2.1f); |
| 104 | s2.setResScale(1.2f); |
| 105 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 106 | s1.setFillStyle(); |
| 107 | s2.setFillStyle(); |
| 108 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 109 | s1.setStrokeStyle(1.0f, false); |
| 110 | s2.setStrokeStyle(1.0f, false); |
| 111 | s1.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.9f); |
| 112 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.9f); |
| 113 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 114 | } |
| 115 | |
| 116 | // Stroke parameters on fill or hairline style are not part of equality. |
| 117 | { |
| 118 | SkStrokeRec s1(SkStrokeRec::kFill_InitStyle); |
| 119 | SkStrokeRec s2(SkStrokeRec::kFill_InitStyle); |
| 120 | for (int i = 0; i < 2; ++i) { |
| 121 | s1.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.9f); |
| 122 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.1f); |
| 123 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 124 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kBevel_Join, 2.9f); |
| 125 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 126 | s2.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kRound_Join, 2.9f); |
| 127 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 128 | s1.setHairlineStyle(); |
| 129 | s2.setHairlineStyle(); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | // Stroke parameters on stroke style are part of equality. |
| 134 | { |
| 135 | SkStrokeRec s1(SkStrokeRec::kFill_InitStyle); |
| 136 | SkStrokeRec s2(SkStrokeRec::kFill_InitStyle); |
| 137 | s1.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.9f); |
| 138 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.9f); |
| 139 | s1.setStrokeStyle(1.0f, false); |
| 140 | |
| 141 | s2.setStrokeStyle(1.0f, true); |
| 142 | REPORTER_ASSERT(reporter, !s1.hasEqualEffect(s2)); |
| 143 | |
| 144 | s2.setStrokeStyle(2.1f, false); |
| 145 | REPORTER_ASSERT(reporter, !s1.hasEqualEffect(s2)); |
| 146 | |
| 147 | s2.setStrokeStyle(1.0f, false); |
| 148 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 149 | |
| 150 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kRound_Join, 2.1f); |
Chris Dalton | 31bf3d9 | 2020-09-15 13:13:42 -0600 | [diff] [blame] | 151 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); // Miter limit not relevant to butt caps. |
kkinnunen | 8f827fe | 2015-05-13 00:02:26 -0700 | [diff] [blame] | 152 | s2.setStrokeParams(SkPaint::kButt_Cap, SkPaint::kBevel_Join, 2.9f); |
| 153 | REPORTER_ASSERT(reporter, !s1.hasEqualEffect(s2)); |
| 154 | s2.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kRound_Join, 2.9f); |
| 155 | REPORTER_ASSERT(reporter, !s1.hasEqualEffect(s2)); |
| 156 | |
| 157 | // Sets fill. |
| 158 | s1.setStrokeStyle(0.0f, true); |
| 159 | s2.setStrokeStyle(0.0f, true); |
| 160 | REPORTER_ASSERT(reporter, s1.hasEqualEffect(s2)); |
| 161 | } |
| 162 | } |
| 163 | |
Robert Phillips | d587ebe | 2018-02-05 09:15:20 -0500 | [diff] [blame] | 164 | // From skbug.com/6491. The large stroke width can cause numerical instabilities. |
| 165 | static void test_big_stroke(skiatest::Reporter* reporter) { |
| 166 | SkPaint paint; |
| 167 | paint.setStyle(SkPaint::kStrokeAndFill_Style); |
| 168 | paint.setStrokeWidth(1.49679073e+10f); |
| 169 | |
| 170 | SkPath path; |
Robert Phillips | d587ebe | 2018-02-05 09:15:20 -0500 | [diff] [blame] | 171 | path.moveTo(SkBits2Float(0x46380000), SkBits2Float(0xc6380000)); // 11776, -11776 |
| 172 | path.lineTo(SkBits2Float(0x46a00000), SkBits2Float(0xc6a00000)); // 20480, -20480 |
| 173 | path.lineTo(SkBits2Float(0x468c0000), SkBits2Float(0xc68c0000)); // 17920, -17920 |
| 174 | path.lineTo(SkBits2Float(0x46100000), SkBits2Float(0xc6100000)); // 9216, -9216 |
| 175 | path.lineTo(SkBits2Float(0x46380000), SkBits2Float(0xc6380000)); // 11776, -11776 |
| 176 | path.close(); |
| 177 | |
| 178 | SkPath strokeAndFillPath; |
| 179 | paint.getFillPath(path, &strokeAndFillPath); |
| 180 | } |
| 181 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 182 | DEF_TEST(Stroke, reporter) { |
caryclark | 63c684a | 2015-02-25 09:04:04 -0800 | [diff] [blame] | 183 | test_strokecubic(reporter); |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 184 | test_strokerect(reporter); |
kkinnunen | 8f827fe | 2015-05-13 00:02:26 -0700 | [diff] [blame] | 185 | test_strokerec_equality(reporter); |
Robert Phillips | d587ebe | 2018-02-05 09:15:20 -0500 | [diff] [blame] | 186 | test_big_stroke(reporter); |
reed@google.com | 603dbed | 2012-11-20 19:00:28 +0000 | [diff] [blame] | 187 | } |