| /* |
| * 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 "PathOpsCubicIntersectionTestData.h" |
| #include "PathOpsQuadIntersectionTestData.h" |
| #include "PathOpsTestCommon.h" |
| #include "SkIntersections.h" |
| #include "SkPathOpsRect.h" |
| #include "SkReduceOrder.h" |
| #include "Test.h" |
| |
| #if 0 // disable test until stroke reduction is supported |
| static bool controls_inside(const SkDCubic& cubic) { |
| return between(cubic[0].fX, cubic[1].fX, cubic[3].fX) |
| && between(cubic[0].fX, cubic[2].fX, cubic[3].fX) |
| && between(cubic[0].fY, cubic[1].fY, cubic[3].fY) |
| && between(cubic[0].fY, cubic[2].fY, cubic[3].fY); |
| } |
| |
| static bool tiny(const SkDCubic& cubic) { |
| int index, minX, maxX, minY, maxY; |
| minX = maxX = minY = maxY = 0; |
| for (index = 1; index < 4; ++index) { |
| if (cubic[minX].fX > cubic[index].fX) { |
| minX = index; |
| } |
| if (cubic[minY].fY > cubic[index].fY) { |
| minY = index; |
| } |
| if (cubic[maxX].fX < cubic[index].fX) { |
| maxX = index; |
| } |
| if (cubic[maxY].fY < cubic[index].fY) { |
| maxY = index; |
| } |
| } |
| return approximately_equal(cubic[maxX].fX, cubic[minX].fX) |
| && approximately_equal(cubic[maxY].fY, cubic[minY].fY); |
| } |
| |
| static void find_tight_bounds(const SkDCubic& cubic, SkDRect& bounds) { |
| SkDCubicPair cubicPair = cubic.chopAt(0.5); |
| if (!tiny(cubicPair.first()) && !controls_inside(cubicPair.first())) { |
| find_tight_bounds(cubicPair.first(), bounds); |
| } else { |
| bounds.add(cubicPair.first()[0]); |
| bounds.add(cubicPair.first()[3]); |
| } |
| if (!tiny(cubicPair.second()) && !controls_inside(cubicPair.second())) { |
| find_tight_bounds(cubicPair.second(), bounds); |
| } else { |
| bounds.add(cubicPair.second()[0]); |
| bounds.add(cubicPair.second()[3]); |
| } |
| } |
| #endif |
| |
| DEF_TEST(PathOpsReduceOrderCubic, reporter) { |
| size_t index; |
| SkReduceOrder reducer; |
| int order; |
| enum { |
| RunAll, |
| RunPointDegenerates, |
| RunNotPointDegenerates, |
| RunLines, |
| RunNotLines, |
| RunModEpsilonLines, |
| RunLessEpsilonLines, |
| RunNegEpsilonLines, |
| RunQuadraticLines, |
| RunQuadraticPoints, |
| RunQuadraticModLines, |
| RunComputedLines, |
| RunNone |
| } run = RunAll; |
| int firstTestIndex = 0; |
| #if 0 |
| run = RunComputedLines; |
| firstTestIndex = 18; |
| #endif |
| int firstPointDegeneratesTest = run == RunAll ? 0 : run == RunPointDegenerates |
| ? firstTestIndex : SK_MaxS32; |
| int firstNotPointDegeneratesTest = run == RunAll ? 0 : run == RunNotPointDegenerates |
| ? firstTestIndex : SK_MaxS32; |
| int firstLinesTest = run == RunAll ? 0 : run == RunLines ? firstTestIndex : SK_MaxS32; |
| int firstNotLinesTest = run == RunAll ? 0 : run == RunNotLines ? firstTestIndex : SK_MaxS32; |
| int firstModEpsilonTest = run == RunAll ? 0 : run == RunModEpsilonLines |
| ? firstTestIndex : SK_MaxS32; |
| int firstLessEpsilonTest = run == RunAll ? 0 : run == RunLessEpsilonLines |
| ? firstTestIndex : SK_MaxS32; |
| int firstNegEpsilonTest = run == RunAll ? 0 : run == RunNegEpsilonLines |
| ? firstTestIndex : SK_MaxS32; |
| int firstQuadraticPointTest = run == RunAll ? 0 : run == RunQuadraticPoints |
| ? firstTestIndex : SK_MaxS32; |
| int firstQuadraticLineTest = run == RunAll ? 0 : run == RunQuadraticLines |
| ? firstTestIndex : SK_MaxS32; |
| int firstQuadraticModLineTest = run == RunAll ? 0 : run == RunQuadraticModLines |
| ? firstTestIndex : SK_MaxS32; |
| #if 0 |
| int firstComputedLinesTest = run == RunAll ? 0 : run == RunComputedLines |
| ? firstTestIndex : SK_MaxS32; |
| #endif |
| for (index = firstPointDegeneratesTest; index < pointDegenerates_count; ++index) { |
| const SkDCubic& cubic = pointDegenerates[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 1) { |
| SkDebugf("[%d] pointDegenerates order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstNotPointDegeneratesTest; index < notPointDegenerates_count; ++index) { |
| const SkDCubic& cubic = notPointDegenerates[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order == 1) { |
| SkDebugf("[%d] notPointDegenerates order=%d\n", static_cast<int>(index), order); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstLinesTest; index < lines_count; ++index) { |
| const SkDCubic& cubic = lines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 2) { |
| SkDebugf("[%d] lines order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstNotLinesTest; index < notLines_count; ++index) { |
| const SkDCubic& cubic = notLines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order == 2) { |
| SkDebugf("[%d] notLines order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstModEpsilonTest; index < modEpsilonLines_count; ++index) { |
| const SkDCubic& cubic = modEpsilonLines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order == 2) { |
| SkDebugf("[%d] line mod by epsilon order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstLessEpsilonTest; index < lessEpsilonLines_count; ++index) { |
| const SkDCubic& cubic = lessEpsilonLines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 2) { |
| SkDebugf("[%d] line less by epsilon/2 order=%d\n", static_cast<int>(index), order); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstNegEpsilonTest; index < negEpsilonLines_count; ++index) { |
| const SkDCubic& cubic = negEpsilonLines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 2) { |
| SkDebugf("[%d] line neg by epsilon/2 order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstQuadraticPointTest; index < quadraticPoints_count; ++index) { |
| const SkDQuad& quad = quadraticPoints[index]; |
| SkASSERT(ValidQuad(quad)); |
| SkDCubic cubic = quad.debugToCubic(); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 1) { |
| SkDebugf("[%d] point quad order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstQuadraticLineTest; index < quadraticLines_count; ++index) { |
| const SkDQuad& quad = quadraticLines[index]; |
| SkASSERT(ValidQuad(quad)); |
| SkDCubic cubic = quad.debugToCubic(); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 2) { |
| SkDebugf("[%d] line quad order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| for (index = firstQuadraticModLineTest; index < quadraticModEpsilonLines_count; ++index) { |
| const SkDQuad& quad = quadraticModEpsilonLines[index]; |
| SkASSERT(ValidQuad(quad)); |
| SkDCubic cubic = quad.debugToCubic(); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics); |
| if (order != 3) { |
| SkDebugf("[%d] line mod quad order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| |
| #if 0 // disable test until stroke reduction is supported |
| // test if computed line end points are valid |
| for (index = firstComputedLinesTest; index < lines_count; ++index) { |
| const SkDCubic& cubic = lines[index]; |
| SkASSERT(ValidCubic(cubic)); |
| bool controlsInside = controls_inside(cubic); |
| order = reducer.reduce(cubic, SkReduceOrder::kAllow_Quadratics, |
| SkReduceOrder::kStroke_Style); |
| if (order == 2 && reducer.fLine[0] == reducer.fLine[1]) { |
| SkDebugf("[%d] line computed ends match order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| if (controlsInside) { |
| if ( (reducer.fLine[0].fX != cubic[0].fX && reducer.fLine[0].fX != cubic[3].fX) |
| || (reducer.fLine[0].fY != cubic[0].fY && reducer.fLine[0].fY != cubic[3].fY) |
| || (reducer.fLine[1].fX != cubic[0].fX && reducer.fLine[1].fX != cubic[3].fX) |
| || (reducer.fLine[1].fY != cubic[0].fY && reducer.fLine[1].fY != cubic[3].fY)) { |
| SkDebugf("[%d] line computed ends order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } else { |
| // binary search for extrema, compare against actual results |
| // while a control point is outside of bounding box formed by end points, split |
| SkDRect bounds = {DBL_MAX, DBL_MAX, -DBL_MAX, -DBL_MAX}; |
| find_tight_bounds(cubic, bounds); |
| if ( (!AlmostEqualUlps(reducer.fLine[0].fX, bounds.fLeft) |
| && !AlmostEqualUlps(reducer.fLine[0].fX, bounds.fRight)) |
| || (!AlmostEqualUlps(reducer.fLine[0].fY, bounds.fTop) |
| && !AlmostEqualUlps(reducer.fLine[0].fY, bounds.fBottom)) |
| || (!AlmostEqualUlps(reducer.fLine[1].fX, bounds.fLeft) |
| && !AlmostEqualUlps(reducer.fLine[1].fX, bounds.fRight)) |
| || (!AlmostEqualUlps(reducer.fLine[1].fY, bounds.fTop) |
| && !AlmostEqualUlps(reducer.fLine[1].fY, bounds.fBottom))) { |
| SkDebugf("[%d] line computed tight bounds order=%d\n", static_cast<int>(index), order); |
| REPORTER_ASSERT(reporter, 0); |
| } |
| } |
| } |
| #endif |
| } |