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caryclark@google.com9166dcb2013-04-08 11:50:00 +00001/*
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 */
caryclark@google.com8d0a5242013-07-16 16:11:16 +00007#include "PathOpsTestCommon.h"
caryclark@google.com9166dcb2013-04-08 11:50:00 +00008#include "SkIntersections.h"
9#include "SkPathOpsLine.h"
10#include "Test.h"
11
12// FIXME: add tests for intersecting, non-intersecting, degenerate, coincident
13static const SkDLine tests[][2] = {
caryclark19eb3b22014-07-18 05:08:14 -070014#if 0
15 // these do intersect at a pair of points, but not close enough for check results liking
16 {{{{365.848175,5081.15186}, {368,5103}}}, {{{367.967712,5102.61084}, {368.278717,5105.71045}}}},
17#endif
caryclark@google.com15107262013-11-08 18:00:01 +000018 {{{{30,20}, {30,50}}}, {{{24,30}, {36,30}}}},
19 {{{{323,193}, {-317,193}}}, {{{0,994}, {0,0}}}},
caryclark@google.com570863f2013-09-16 15:55:01 +000020 {{{{90,230}, {160,60}}}, {{{60,120}, {260,120}}}},
21 {{{{90,230}, {160,60}}}, {{{181.176468,120}, {135.294128,120}}}},
skia.committer@gmail.com7f1af502013-07-24 07:01:12 +000022 {{{{181.1764678955078125f, 120}, {186.3661956787109375f, 134.7042236328125f}}},
caryclark@google.com4fdbb222013-07-23 15:27:41 +000023 {{{175.8309783935546875f, 141.5211334228515625f}, {187.8782806396484375f, 133.7258148193359375f}}}},
caryclark@google.com07e97fc2013-07-08 17:17:02 +000024#if 0 // FIXME: these fail because one line is too short and appears quasi-coincident
25 {{{{158.000000, 926.000000}, {1108.00000, 926.000000}}},
26 {{{1108.00000, 926.000000}, {1108.00000, 925.999634}}}},
27 {{{{1108,926}, {1108,925.9996337890625}}}, {{{158,926}, {1108,926}}}},
28#endif
caryclark@google.coma5e55922013-05-07 18:51:31 +000029 {{{{192, 4}, {243, 4}}}, {{{246, 4}, {189, 4}}}},
30 {{{{246, 4}, {189, 4}}}, {{{192, 4}, {243, 4}}}},
caryclark@google.com03610322013-04-18 15:58:21 +000031 {{{{5, 0}, {0, 5}}}, {{{5, 4}, {1, 4}}}},
caryclark@google.com9166dcb2013-04-08 11:50:00 +000032 {{{{0, 0}, {1, 0}}}, {{{1, 0}, {0, 0}}}},
33 {{{{0, 0}, {0, 0}}}, {{{0, 0}, {1, 0}}}},
34 {{{{0, 1}, {0, 1}}}, {{{0, 0}, {0, 2}}}},
35 {{{{0, 0}, {1, 0}}}, {{{0, 0}, {2, 0}}}},
36 {{{{1, 1}, {2, 2}}}, {{{0, 0}, {3, 3}}}},
37 {{{{166.86950047022856, 112.69654129527828}, {166.86948801592692, 112.69655741235339}}},
38 {{{166.86960700313026, 112.6965477747386}, {166.86925794355412, 112.69656471103423}}}}
39};
40
caryclark@google.comad65a3e2013-04-15 19:13:59 +000041static const size_t tests_count = SK_ARRAY_COUNT(tests);
caryclark@google.com9166dcb2013-04-08 11:50:00 +000042
43static const SkDLine noIntersect[][2] = {
caryclark@google.com570863f2013-09-16 15:55:01 +000044 {{{{(double) (2 - 1e-6f),2}, {(double) (2 - 1e-6f),4}}},
45 {{{2,1}, {2,3}}}},
46
caryclark@google.com9166dcb2013-04-08 11:50:00 +000047 {{{{0, 0}, {1, 0}}}, {{{3, 0}, {2, 0}}}},
48 {{{{0, 0}, {0, 0}}}, {{{1, 0}, {2, 0}}}},
49 {{{{0, 1}, {0, 1}}}, {{{0, 3}, {0, 2}}}},
50 {{{{0, 0}, {1, 0}}}, {{{2, 0}, {3, 0}}}},
51 {{{{1, 1}, {2, 2}}}, {{{4, 4}, {3, 3}}}},
52};
53
caryclark@google.comad65a3e2013-04-15 19:13:59 +000054static const size_t noIntersect_count = SK_ARRAY_COUNT(noIntersect);
caryclark@google.com9166dcb2013-04-08 11:50:00 +000055
caryclark@google.com07e97fc2013-07-08 17:17:02 +000056static const SkDLine coincidentTests[][2] = {
caryclark65b427c2014-09-18 10:32:57 -070057 {{{ {-1.48383003e-006,-83}, {4.2268899e-014,-60} }},
58 {{ {9.5359502e-007,-60}, {5.08227985e-015,-83} }}},
59
caryclarkdac1d172014-06-17 05:15:38 -070060 {{{ { 10105, 2510 }, { 10123, 2509.98999f } }},
61 {{{10105, 2509.98999f}, { 10123, 2510 } }}},
62
63 {{ { { 0, 482.5 }, { -4.4408921e-016, 682.5 } } },
caryclark@google.com7eaa53d2013-10-02 14:49:34 +000064 {{{0,683}, {0,482}}}},
65
66 {{{{1.77635684e-015,312}, {-1.24344979e-014,348}}},
67 {{{0,348}, {0,312}}}},
68
caryclark@google.com570863f2013-09-16 15:55:01 +000069 {{{{979.304871, 561}, {1036.69507, 291}}},
70 {{{985.681519, 531}, {982.159790, 547.568542}}}},
71
72 {{{{232.159805, 547.568542}, {235.681549, 531}}},
73 {{{286.695129,291}, {229.304855,561}}}},
74
skia.committer@gmail.com7f1af502013-07-24 07:01:12 +000075 {{{{186.3661956787109375f, 134.7042236328125f}, {187.8782806396484375f, 133.7258148193359375f}}},
caryclark@google.com4fdbb222013-07-23 15:27:41 +000076 {{{175.8309783935546875f, 141.5211334228515625f}, {187.8782806396484375f, 133.7258148193359375f}}}},
77
caryclark@google.com07e97fc2013-07-08 17:17:02 +000078 {{{{235.681549, 531.000000}, {280.318420, 321.000000}}},
caryclark@google.com4fdbb222013-07-23 15:27:41 +000079 {{{286.695129, 291.000000}, {229.304855, 561.000000}}}},
caryclark@google.com07e97fc2013-07-08 17:17:02 +000080};
81
82static const size_t coincidentTests_count = SK_ARRAY_COUNT(coincidentTests);
83
caryclark@google.coma5e55922013-05-07 18:51:31 +000084static void check_results(skiatest::Reporter* reporter, const SkDLine& line1, const SkDLine& line2,
85 const SkIntersections& ts) {
86 for (int i = 0; i < ts.used(); ++i) {
caryclark@google.com4fdbb222013-07-23 15:27:41 +000087 SkDPoint result1 = line1.ptAtT(ts[0][i]);
88 SkDPoint result2 = line2.ptAtT(ts[1][i]);
caryclarkdac1d172014-06-17 05:15:38 -070089 if (!result1.approximatelyEqual(result2) && !ts.nearlySame(i)) {
caryclark@google.coma5e55922013-05-07 18:51:31 +000090 REPORTER_ASSERT(reporter, ts.used() != 1);
caryclark@google.com4fdbb222013-07-23 15:27:41 +000091 result2 = line2.ptAtT(ts[1][i ^ 1]);
caryclarkdac1d172014-06-17 05:15:38 -070092 if (!result1.approximatelyEqual(result2)) {
93 SkDebugf(".");
94 }
caryclark@google.coma5e55922013-05-07 18:51:31 +000095 REPORTER_ASSERT(reporter, result1.approximatelyEqual(result2));
96 REPORTER_ASSERT(reporter, result1.approximatelyEqual(ts.pt(i).asSkPoint()));
97 }
98 }
99}
100
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000101static void testOne(skiatest::Reporter* reporter, const SkDLine& line1, const SkDLine& line2) {
caryclark@google.com8d0a5242013-07-16 16:11:16 +0000102 SkASSERT(ValidLine(line1));
103 SkASSERT(ValidLine(line2));
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000104 SkIntersections i;
105 int pts = i.intersect(line1, line2);
106 REPORTER_ASSERT(reporter, pts);
107 REPORTER_ASSERT(reporter, pts == i.used());
108 check_results(reporter, line1, line2, i);
109 if (line1[0] == line1[1] || line2[0] == line2[1]) {
110 return;
111 }
112 if (line1[0].fY == line1[1].fY) {
113 double left = SkTMin(line1[0].fX, line1[1].fX);
114 double right = SkTMax(line1[0].fX, line1[1].fX);
115 SkIntersections ts;
116 ts.horizontal(line2, left, right, line1[0].fY, line1[0].fX != left);
117 check_results(reporter, line2, line1, ts);
118 }
119 if (line2[0].fY == line2[1].fY) {
120 double left = SkTMin(line2[0].fX, line2[1].fX);
121 double right = SkTMax(line2[0].fX, line2[1].fX);
122 SkIntersections ts;
123 ts.horizontal(line1, left, right, line2[0].fY, line2[0].fX != left);
124 check_results(reporter, line1, line2, ts);
125 }
126 if (line1[0].fX == line1[1].fX) {
127 double top = SkTMin(line1[0].fY, line1[1].fY);
128 double bottom = SkTMax(line1[0].fY, line1[1].fY);
129 SkIntersections ts;
130 ts.vertical(line2, top, bottom, line1[0].fX, line1[0].fY != top);
131 check_results(reporter, line2, line1, ts);
132 }
133 if (line2[0].fX == line2[1].fX) {
134 double top = SkTMin(line2[0].fY, line2[1].fY);
135 double bottom = SkTMax(line2[0].fY, line2[1].fY);
136 SkIntersections ts;
137 ts.vertical(line1, top, bottom, line2[0].fX, line2[0].fY != top);
138 check_results(reporter, line1, line2, ts);
139 }
caryclark@google.com7eaa53d2013-10-02 14:49:34 +0000140 reporter->bumpTestCount();
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000141}
142
143static void testOneCoincident(skiatest::Reporter* reporter, const SkDLine& line1,
144 const SkDLine& line2) {
caryclark@google.com8d0a5242013-07-16 16:11:16 +0000145 SkASSERT(ValidLine(line1));
146 SkASSERT(ValidLine(line2));
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000147 SkIntersections ts;
148 int pts = ts.intersect(line1, line2);
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000149 REPORTER_ASSERT(reporter, pts == 2);
150 REPORTER_ASSERT(reporter, pts == ts.used());
151 check_results(reporter, line1, line2, ts);
caryclark@google.com7eaa53d2013-10-02 14:49:34 +0000152 if (line1[0] == line1[1] || line2[0] == line2[1]) {
153 return;
154 }
155 if (line1[0].fY == line1[1].fY) {
156 double left = SkTMin(line1[0].fX, line1[1].fX);
157 double right = SkTMax(line1[0].fX, line1[1].fX);
158 SkIntersections ts;
159 ts.horizontal(line2, left, right, line1[0].fY, line1[0].fX != left);
160 REPORTER_ASSERT(reporter, pts == 2);
161 REPORTER_ASSERT(reporter, pts == ts.used());
162 check_results(reporter, line2, line1, ts);
163 }
164 if (line2[0].fY == line2[1].fY) {
165 double left = SkTMin(line2[0].fX, line2[1].fX);
166 double right = SkTMax(line2[0].fX, line2[1].fX);
167 SkIntersections ts;
168 ts.horizontal(line1, left, right, line2[0].fY, line2[0].fX != left);
169 REPORTER_ASSERT(reporter, pts == 2);
170 REPORTER_ASSERT(reporter, pts == ts.used());
171 check_results(reporter, line1, line2, ts);
172 }
173 if (line1[0].fX == line1[1].fX) {
174 double top = SkTMin(line1[0].fY, line1[1].fY);
175 double bottom = SkTMax(line1[0].fY, line1[1].fY);
176 SkIntersections ts;
177 ts.vertical(line2, top, bottom, line1[0].fX, line1[0].fY != top);
178 REPORTER_ASSERT(reporter, pts == 2);
179 REPORTER_ASSERT(reporter, pts == ts.used());
180 check_results(reporter, line2, line1, ts);
181 }
182 if (line2[0].fX == line2[1].fX) {
183 double top = SkTMin(line2[0].fY, line2[1].fY);
184 double bottom = SkTMax(line2[0].fY, line2[1].fY);
185 SkIntersections ts;
186 ts.vertical(line1, top, bottom, line2[0].fX, line2[0].fY != top);
187 REPORTER_ASSERT(reporter, pts == 2);
188 REPORTER_ASSERT(reporter, pts == ts.used());
189 check_results(reporter, line1, line2, ts);
190 }
191 reporter->bumpTestCount();
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000192}
193
tfarina@chromium.org78e7b4e2014-01-02 21:45:03 +0000194DEF_TEST(PathOpsLineIntersection, reporter) {
caryclark@google.com9166dcb2013-04-08 11:50:00 +0000195 size_t index;
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000196 for (index = 0; index < coincidentTests_count; ++index) {
197 const SkDLine& line1 = coincidentTests[index][0];
198 const SkDLine& line2 = coincidentTests[index][1];
199 testOneCoincident(reporter, line1, line2);
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000200 }
caryclark@google.com9166dcb2013-04-08 11:50:00 +0000201 for (index = 0; index < tests_count; ++index) {
202 const SkDLine& line1 = tests[index][0];
203 const SkDLine& line2 = tests[index][1];
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000204 testOne(reporter, line1, line2);
caryclark@google.com9166dcb2013-04-08 11:50:00 +0000205 }
206 for (index = 0; index < noIntersect_count; ++index) {
207 const SkDLine& line1 = noIntersect[index][0];
208 const SkDLine& line2 = noIntersect[index][1];
209 SkIntersections ts;
210 int pts = ts.intersect(line1, line2);
skia.committer@gmail.com2b34fe02013-05-08 07:01:40 +0000211 REPORTER_ASSERT(reporter, !pts);
caryclark@google.coma5e55922013-05-07 18:51:31 +0000212 REPORTER_ASSERT(reporter, pts == ts.used());
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000213 reporter->bumpTestCount();
caryclark@google.coma5e55922013-05-07 18:51:31 +0000214 }
caryclark@google.com9166dcb2013-04-08 11:50:00 +0000215}
216
tfarina@chromium.org78e7b4e2014-01-02 21:45:03 +0000217DEF_TEST(PathOpsLineIntersectionOneOff, reporter) {
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000218 int index = 0;
219 SkASSERT(index < (int) tests_count);
caryclark@google.com570863f2013-09-16 15:55:01 +0000220 testOne(reporter, tests[index][0], tests[index][1]);
221 testOne(reporter, tests[1][0], tests[1][1]);
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000222}
223
tfarina@chromium.org78e7b4e2014-01-02 21:45:03 +0000224DEF_TEST(PathOpsLineIntersectionOneCoincident, reporter) {
caryclark@google.com07e97fc2013-07-08 17:17:02 +0000225 int index = 0;
226 SkASSERT(index < (int) coincidentTests_count);
227 const SkDLine& line1 = coincidentTests[index][0];
228 const SkDLine& line2 = coincidentTests[index][1];
229 testOneCoincident(reporter, line1, line2);
230}