/* * 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 "SkIntersections.h" #include "SkPathOpsLine.h" #include "Test.h" // FIXME: add tests for intersecting, non-intersecting, degenerate, coincident static const SkDLine tests[][2] = { {{{{0, 0}, {1, 0}}}, {{{1, 0}, {0, 0}}}}, {{{{0, 0}, {0, 0}}}, {{{0, 0}, {1, 0}}}}, {{{{0, 1}, {0, 1}}}, {{{0, 0}, {0, 2}}}}, {{{{0, 0}, {1, 0}}}, {{{0, 0}, {2, 0}}}}, {{{{1, 1}, {2, 2}}}, {{{0, 0}, {3, 3}}}}, {{{{166.86950047022856, 112.69654129527828}, {166.86948801592692, 112.69655741235339}}}, {{{166.86960700313026, 112.6965477747386}, {166.86925794355412, 112.69656471103423}}}} }; static const size_t tests_count = sizeof(tests) / sizeof(tests[0]); static const SkDLine noIntersect[][2] = { {{{{0, 0}, {1, 0}}}, {{{3, 0}, {2, 0}}}}, {{{{0, 0}, {0, 0}}}, {{{1, 0}, {2, 0}}}}, {{{{0, 1}, {0, 1}}}, {{{0, 3}, {0, 2}}}}, {{{{0, 0}, {1, 0}}}, {{{2, 0}, {3, 0}}}}, {{{{1, 1}, {2, 2}}}, {{{4, 4}, {3, 3}}}}, }; static const size_t noIntersect_count = sizeof(noIntersect) / sizeof(noIntersect[0]); static void TestLineIntersection(skiatest::Reporter* reporter) { size_t index; for (index = 0; index < tests_count; ++index) { const SkDLine& line1 = tests[index][0]; const SkDLine& line2 = tests[index][1]; SkIntersections ts; int pts = ts.intersect(line1, line2); REPORTER_ASSERT(reporter, pts); for (int i = 0; i < pts; ++i) { SkDPoint result1 = line1.xyAtT(ts[0][i]); SkDPoint result2 = line2.xyAtT(ts[1][i]); if (!result1.approximatelyEqual(result2)) { REPORTER_ASSERT(reporter, pts != 1); result2 = line2.xyAtT(ts[1][i ^ 1]); REPORTER_ASSERT(reporter, result1.approximatelyEqual(result2)); } } } for (index = 0; index < noIntersect_count; ++index) { const SkDLine& line1 = noIntersect[index][0]; const SkDLine& line2 = noIntersect[index][1]; SkIntersections ts; int pts = ts.intersect(line1, line2); REPORTER_ASSERT(reporter, !pts); } } #include "TestClassDef.h" DEFINE_TESTCLASS("PathOpsLineIntersection", LineIntersectionTestClass, TestLineIntersection)