1 /* 2 * Copyright 2017 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 #include "Test.h" 8 #include "SkPolyUtils.h" 9 10 DEF_TEST(InsetConvexPoly, reporter) { 11 SkTDArray<SkPoint> rrectPoly; 12 13 // round rect 14 *rrectPoly.push() = SkPoint::Make(-100, 55); 15 *rrectPoly.push() = SkPoint::Make(100, 55); 16 *rrectPoly.push() = SkPoint::Make(100 + 2.5f, 50 + 4.330127f); 17 *rrectPoly.push() = SkPoint::Make(100 + 3.535534f, 50 + 3.535534f); 18 *rrectPoly.push() = SkPoint::Make(100 + 4.330127f, 50 + 2.5f); 19 *rrectPoly.push() = SkPoint::Make(105, 50); 20 *rrectPoly.push() = SkPoint::Make(105, -50); 21 *rrectPoly.push() = SkPoint::Make(100 + 4.330127f, -50 - 2.5f); 22 *rrectPoly.push() = SkPoint::Make(100 + 3.535534f, -50 - 3.535534f); 23 *rrectPoly.push() = SkPoint::Make(100 + 2.5f, -50 - 4.330127f); 24 *rrectPoly.push() = SkPoint::Make(100, -55); 25 *rrectPoly.push() = SkPoint::Make(-100, -55); 26 *rrectPoly.push() = SkPoint::Make(-100 - 2.5f, -50 - 4.330127f); 27 *rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, -50 - 3.535534f); 28 *rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, -50 - 2.5f); 29 *rrectPoly.push() = SkPoint::Make(-105, -50); 30 *rrectPoly.push() = SkPoint::Make(-105, 50); 31 *rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, 50 + 2.5f); 32 *rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, 50 + 3.535534f); 33 *rrectPoly.push() = SkPoint::Make(-100 - 2.5f, 50 + 4.330127f); 34 REPORTER_ASSERT(reporter, SkIsConvexPolygon(rrectPoly.begin(), rrectPoly.count())); 35 36 // inset a little 37 SkTDArray<SkPoint> insetPoly; 38 bool result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 3, &insetPoly); 39 REPORTER_ASSERT(reporter, result); 40 REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count())); 41 42 // inset to rect 43 result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 10, &insetPoly); 44 REPORTER_ASSERT(reporter, result); 45 REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count())); 46 REPORTER_ASSERT(reporter, insetPoly.count() == 4); 47 if (insetPoly.count() == 4) { 48 REPORTER_ASSERT(reporter, insetPoly[0].equals(-95, 45)); 49 REPORTER_ASSERT(reporter, insetPoly[1].equals(95, 45)); 50 REPORTER_ASSERT(reporter, insetPoly[2].equals(95, -45)); 51 REPORTER_ASSERT(reporter, insetPoly[3].equals(-95, -45)); 52 } 53 54 // just to full inset 55 // fails, but outputs a line segment 56 result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 55, &insetPoly); 57 REPORTER_ASSERT(reporter, !result); 58 REPORTER_ASSERT(reporter, !SkIsConvexPolygon(insetPoly.begin(), insetPoly.count())); 59 REPORTER_ASSERT(reporter, insetPoly.count() == 2); 60 if (insetPoly.count() == 2) { 61 REPORTER_ASSERT(reporter, insetPoly[0].equals(-50, 0)); 62 REPORTER_ASSERT(reporter, insetPoly[1].equals(50, 0)); 63 } 64 65 // past full inset 66 result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 75, &insetPoly); 67 REPORTER_ASSERT(reporter, !result); 68 REPORTER_ASSERT(reporter, insetPoly.count() == 1); 69 70 // troublesome case 71 SkTDArray<SkPoint> clippedRRectPoly; 72 *clippedRRectPoly.push() = SkPoint::Make(335.928101f, 428.219055f); 73 *clippedRRectPoly.push() = SkPoint::Make(330.414459f, 423.034912f); 74 *clippedRRectPoly.push() = SkPoint::Make(325.749084f, 417.395508f); 75 *clippedRRectPoly.push() = SkPoint::Make(321.931946f, 411.300842f); 76 *clippedRRectPoly.push() = SkPoint::Make(318.963074f, 404.750977f); 77 *clippedRRectPoly.push() = SkPoint::Make(316.842468f, 397.745850f); 78 *clippedRRectPoly.push() = SkPoint::Make(315.570068f, 390.285522f); 79 *clippedRRectPoly.push() = SkPoint::Make(315.145966f, 382.369965f); 80 *clippedRRectPoly.push() = SkPoint::Make(315.570068f, 374.454346f); 81 *clippedRRectPoly.push() = SkPoint::Make(316.842468f, 366.994019f); 82 *clippedRRectPoly.push() = SkPoint::Make(318.963074f, 359.988892f); 83 *clippedRRectPoly.push() = SkPoint::Make(321.931946f, 353.439056f); 84 *clippedRRectPoly.push() = SkPoint::Make(325.749084f, 347.344421f); 85 *clippedRRectPoly.push() = SkPoint::Make(330.414459f, 341.705017f); 86 *clippedRRectPoly.push() = SkPoint::Make(335.928101f, 336.520813f); 87 *clippedRRectPoly.push() = SkPoint::Make(342.289948f, 331.791901f); 88 *clippedRRectPoly.push() = SkPoint::Make(377.312134f, 331.791901f); 89 *clippedRRectPoly.push() = SkPoint::Make(381.195313f, 332.532593f); 90 *clippedRRectPoly.push() = SkPoint::Make(384.464935f, 334.754700f); 91 *clippedRRectPoly.push() = SkPoint::Make(386.687042f, 338.024292f); 92 *clippedRRectPoly.push() = SkPoint::Make(387.427765f, 341.907532f); 93 *clippedRRectPoly.push() = SkPoint::Make(387.427765f, 422.832367f); 94 *clippedRRectPoly.push() = SkPoint::Make(386.687042f, 426.715576f); 95 *clippedRRectPoly.push() = SkPoint::Make(384.464935f, 429.985168f); 96 *clippedRRectPoly.push() = SkPoint::Make(381.195313f, 432.207275f); 97 *clippedRRectPoly.push() = SkPoint::Make(377.312134f, 432.947998f); 98 *clippedRRectPoly.push() = SkPoint::Make(342.289948f, 432.947998f); 99 REPORTER_ASSERT(reporter, SkIsConvexPolygon(clippedRRectPoly.begin(), 100 clippedRRectPoly.count())); 101 102 result = SkInsetConvexPolygon(clippedRRectPoly.begin(), clippedRRectPoly.count(), 32.3699417f, 103 &insetPoly); 104 REPORTER_ASSERT(reporter, result); 105 REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count())); 106 } 107
