| /* |
| * 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 "SkPathOpsCubic.h" |
| #include "SkPathOpsLine.h" |
| #include "SkReduceOrder.h" |
| #include "Test.h" |
| |
| static struct lineCubic { |
| SkDCubic cubic; |
| SkDLine line; |
| } lineCubicTests[] = { |
| #if 0 |
| {{{{258, 122}, {260.761414, 122}, { 263, 124.238579}, {263, 127}}}, |
| {{{259.82843, 125.17157}, {261.535522, 123.46447}}}}, |
| #endif |
| {{{{1006.6951293945312,291}, {1023.263671875,291}, {1033.8402099609375,304.43145751953125}, |
| {1030.318359375,321}}}, |
| {{{979.30487060546875,561}, {1036.695068359375,291}}}}, |
| {{{{259.30487060546875,561}, {242.73631286621094,561}, {232.15980529785156,547.56854248046875}, |
| {235.68154907226562,531}}}, |
| {{{286.69512939453125,291}, {229.30485534667969,561}}}}, |
| {{{{1, 2}, {2, 6}, {2, 0}, {1, 0}}}, {{{1, 0}, {1, 2}}}}, |
| {{{{0, 0}, {0, 1}, {0, 1}, {1, 1}}}, {{{0, 1}, {1, 0}}}}, |
| }; |
| |
| static const size_t lineCubicTests_count = SK_ARRAY_COUNT(lineCubicTests); |
| |
| static void testOne(skiatest::Reporter* reporter, int iIndex) { |
| const SkDCubic& cubic = lineCubicTests[iIndex].cubic; |
| const SkDLine& line = lineCubicTests[iIndex].line; |
| SkReduceOrder reduce1; |
| SkReduceOrder reduce2; |
| int order1 = reduce1.reduce(cubic, SkReduceOrder::kNo_Quadratics, |
| SkReduceOrder::kFill_Style); |
| int order2 = reduce2.reduce(line); |
| if (order1 < 4) { |
| SkDebugf("[%d] cubic order=%d\n", iIndex, order1); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| if (order2 < 2) { |
| SkDebugf("[%d] line order=%d\n", iIndex, order2); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| if (order1 == 4 && order2 == 2) { |
| SkIntersections i; |
| int roots = i.intersect(cubic, line); |
| for (int pt = 0; pt < roots; ++pt) { |
| double tt1 = i[0][pt]; |
| SkDPoint xy1 = cubic.xyAtT(tt1); |
| double tt2 = i[1][pt]; |
| SkDPoint xy2 = line.xyAtT(tt2); |
| if (!xy1.approximatelyEqual(xy2)) { |
| SkDebugf("%s [%d,%d] x!= t1=%g (%g,%g) t2=%g (%g,%g)\n", |
| __FUNCTION__, iIndex, pt, tt1, xy1.fX, xy1.fY, tt2, xy2.fX, xy2.fY); |
| } |
| REPORTER_ASSERT(reporter, xy1.approximatelyEqual(xy2)); |
| } |
| } |
| } |
| |
| static void PathOpsCubicLineIntersectionTest(skiatest::Reporter* reporter) { |
| for (size_t index = 0; index < lineCubicTests_count; ++index) { |
| int iIndex = static_cast<int>(index); |
| testOne(reporter, iIndex); |
| reporter->bumpTestCount(); |
| } |
| } |
| |
| static void PathOpsCubicLineIntersectionOneOffTest(skiatest::Reporter* reporter) { |
| int iIndex = 0; |
| testOne(reporter, iIndex); |
| const SkDCubic& cubic = lineCubicTests[iIndex].cubic; |
| const SkDLine& line = lineCubicTests[iIndex].line; |
| SkIntersections i; |
| i.intersect(cubic, line); |
| SkASSERT(i.used() == 1); |
| #if ONE_OFF_DEBUG |
| double cubicT = i[0][0]; |
| SkDPoint prev = cubic.xyAtT(cubicT * 2 - 1); |
| SkDPoint sect = cubic.xyAtT(cubicT); |
| double left[3] = { line.isLeft(prev), line.isLeft(sect), line.isLeft(cubic[3]) }; |
| SkDebugf("cubic=(%1.9g, %1.9g, %1.9g)\n", left[0], left[1], left[2]); |
| SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", prev.fX, prev.fY, sect.fX, sect.fY); |
| SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", sect.fX, sect.fY, cubic[3].fX, cubic[3].fY); |
| SkDPoint prevL = line.xyAtT(i[1][0] - 0.0000007); |
| SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", prevL.fX, prevL.fY, i.pt(0).fX, i.pt(0).fY); |
| SkDPoint nextL = line.xyAtT(i[1][0] + 0.0000007); |
| SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", i.pt(0).fX, i.pt(0).fY, nextL.fX, nextL.fY); |
| SkDebugf("prevD=%1.9g dist=%1.9g nextD=%1.9g\n", prev.distance(nextL), |
| sect.distance(i.pt(0)), cubic[3].distance(prevL)); |
| #endif |
| } |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS_SHORT(PathOpsCubicLineIntersectionTest) |
| |
| DEFINE_TESTCLASS_SHORT(PathOpsCubicLineIntersectionOneOffTest) |