| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "src/utils/SkPolyUtils.h" |
| #include "tests/Test.h" |
| |
| DEF_TEST(OffsetSimplePoly, reporter) { |
| SkTDArray<SkPoint> rrectPoly; |
| |
| /////////////////////////////////////////////////////////////////////// |
| // Try convex tests first |
| |
| // round rect |
| *rrectPoly.push() = SkPoint::Make(-100, 55); |
| *rrectPoly.push() = SkPoint::Make(100, 55); |
| *rrectPoly.push() = SkPoint::Make(100 + 2.5f, 50 + 4.330127f); |
| *rrectPoly.push() = SkPoint::Make(100 + 3.535534f, 50 + 3.535534f); |
| *rrectPoly.push() = SkPoint::Make(100 + 4.330127f, 50 + 2.5f); |
| *rrectPoly.push() = SkPoint::Make(105, 50); |
| *rrectPoly.push() = SkPoint::Make(105, -50); |
| *rrectPoly.push() = SkPoint::Make(100 + 4.330127f, -50 - 2.5f); |
| *rrectPoly.push() = SkPoint::Make(100 + 3.535534f, -50 - 3.535534f); |
| *rrectPoly.push() = SkPoint::Make(100 + 2.5f, -50 - 4.330127f); |
| *rrectPoly.push() = SkPoint::Make(100, -55); |
| *rrectPoly.push() = SkPoint::Make(-100, -55); |
| *rrectPoly.push() = SkPoint::Make(-100 - 2.5f, -50 - 4.330127f); |
| *rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, -50 - 3.535534f); |
| *rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, -50 - 2.5f); |
| *rrectPoly.push() = SkPoint::Make(-105, -50); |
| *rrectPoly.push() = SkPoint::Make(-105, 50); |
| *rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, 50 + 2.5f); |
| *rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, 50 + 3.535534f); |
| *rrectPoly.push() = SkPoint::Make(-100 - 2.5f, 50 + 4.330127f); |
| SkRect bounds; |
| bounds.setBoundsCheck(rrectPoly.begin(), rrectPoly.count()); |
| |
| REPORTER_ASSERT(reporter, SkIsConvexPolygon(rrectPoly.begin(), rrectPoly.count())); |
| |
| // inset a little |
| SkTDArray<SkPoint> offsetPoly; |
| bool result = SkOffsetSimplePolygon(rrectPoly.begin(), rrectPoly.count(), bounds, 3, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsConvexPolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| // inset to rect |
| result = SkOffsetSimplePolygon(rrectPoly.begin(), rrectPoly.count(), bounds, 10, &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsConvexPolygon(offsetPoly.begin(), offsetPoly.count())); |
| REPORTER_ASSERT(reporter, offsetPoly.count() == 4); |
| if (offsetPoly.count() == 4) { |
| REPORTER_ASSERT(reporter, offsetPoly[0].equals(-95, 45)); |
| REPORTER_ASSERT(reporter, offsetPoly[1].equals(95, 45)); |
| REPORTER_ASSERT(reporter, offsetPoly[2].equals(95, -45)); |
| REPORTER_ASSERT(reporter, offsetPoly[3].equals(-95, -45)); |
| } |
| |
| // just to full inset |
| // fails, but outputs a line segment |
| result = SkOffsetSimplePolygon(rrectPoly.begin(), rrectPoly.count(), bounds, 55, &offsetPoly); |
| REPORTER_ASSERT(reporter, !result); |
| REPORTER_ASSERT(reporter, !SkIsConvexPolygon(offsetPoly.begin(), offsetPoly.count())); |
| REPORTER_ASSERT(reporter, offsetPoly.count() == 2); |
| if (offsetPoly.count() == 2) { |
| REPORTER_ASSERT(reporter, offsetPoly[0].equals(-50, 0)); |
| REPORTER_ASSERT(reporter, offsetPoly[1].equals(50, 0)); |
| } |
| |
| // past full inset |
| result = SkOffsetSimplePolygon(rrectPoly.begin(), rrectPoly.count(), bounds, 75, &offsetPoly); |
| REPORTER_ASSERT(reporter, !result); |
| |
| // troublesome case |
| SkTDArray<SkPoint> clippedRRectPoly; |
| *clippedRRectPoly.push() = SkPoint::Make(335.928101f, 428.219055f); |
| *clippedRRectPoly.push() = SkPoint::Make(330.414459f, 423.034912f); |
| *clippedRRectPoly.push() = SkPoint::Make(325.749084f, 417.395508f); |
| *clippedRRectPoly.push() = SkPoint::Make(321.931946f, 411.300842f); |
| *clippedRRectPoly.push() = SkPoint::Make(318.963074f, 404.750977f); |
| *clippedRRectPoly.push() = SkPoint::Make(316.842468f, 397.745850f); |
| *clippedRRectPoly.push() = SkPoint::Make(315.570068f, 390.285522f); |
| *clippedRRectPoly.push() = SkPoint::Make(315.145966f, 382.369965f); |
| *clippedRRectPoly.push() = SkPoint::Make(315.570068f, 374.454346f); |
| *clippedRRectPoly.push() = SkPoint::Make(316.842468f, 366.994019f); |
| *clippedRRectPoly.push() = SkPoint::Make(318.963074f, 359.988892f); |
| *clippedRRectPoly.push() = SkPoint::Make(321.931946f, 353.439056f); |
| *clippedRRectPoly.push() = SkPoint::Make(325.749084f, 347.344421f); |
| *clippedRRectPoly.push() = SkPoint::Make(330.414459f, 341.705017f); |
| *clippedRRectPoly.push() = SkPoint::Make(335.928101f, 336.520813f); |
| *clippedRRectPoly.push() = SkPoint::Make(342.289948f, 331.791901f); |
| *clippedRRectPoly.push() = SkPoint::Make(377.312134f, 331.791901f); |
| *clippedRRectPoly.push() = SkPoint::Make(381.195313f, 332.532593f); |
| *clippedRRectPoly.push() = SkPoint::Make(384.464935f, 334.754700f); |
| *clippedRRectPoly.push() = SkPoint::Make(386.687042f, 338.024292f); |
| *clippedRRectPoly.push() = SkPoint::Make(387.427765f, 341.907532f); |
| *clippedRRectPoly.push() = SkPoint::Make(387.427765f, 422.832367f); |
| *clippedRRectPoly.push() = SkPoint::Make(386.687042f, 426.715576f); |
| *clippedRRectPoly.push() = SkPoint::Make(384.464935f, 429.985168f); |
| *clippedRRectPoly.push() = SkPoint::Make(381.195313f, 432.207275f); |
| *clippedRRectPoly.push() = SkPoint::Make(377.312134f, 432.947998f); |
| *clippedRRectPoly.push() = SkPoint::Make(342.289948f, 432.947998f); |
| bounds.setBoundsCheck(clippedRRectPoly.begin(), clippedRRectPoly.count()); |
| |
| REPORTER_ASSERT(reporter, SkIsConvexPolygon(clippedRRectPoly.begin(), |
| clippedRRectPoly.count())); |
| |
| result = SkOffsetSimplePolygon(clippedRRectPoly.begin(), clippedRRectPoly.count(), bounds, |
| 32.3699417f, &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsConvexPolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Concave tests |
| |
| SkTDArray<SkPoint> starPoly; |
| *starPoly.push() = SkPoint::Make(0.0f, -50.0f); |
| *starPoly.push() = SkPoint::Make(14.43f, -25.0f); |
| *starPoly.push() = SkPoint::Make(43.30f, -25.0f); |
| *starPoly.push() = SkPoint::Make(28.86f, 0.0f); |
| *starPoly.push() = SkPoint::Make(43.30f, 25.0f); |
| *starPoly.push() = SkPoint::Make(14.43f, 25.0f); |
| *starPoly.push() = SkPoint::Make(0.0f, 50.0f); |
| *starPoly.push() = SkPoint::Make(-14.43f, 25.0f); |
| *starPoly.push() = SkPoint::Make(-43.30f, 25.0f); |
| *starPoly.push() = SkPoint::Make(-28.86f, 0.0f); |
| *starPoly.push() = SkPoint::Make(-43.30f, -25.0f); |
| *starPoly.push() = SkPoint::Make(-14.43f, -25.0f); |
| bounds.setBoundsCheck(starPoly.begin(), starPoly.count()); |
| |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(starPoly.begin(), starPoly.count())); |
| |
| // try a variety of distances |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, 0.1f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, 5.665f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, 28, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| // down to a point |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, 28.866f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, !result); |
| |
| // and past |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, 50.5f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, !result); |
| |
| // and now out |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, -0.1f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, -5.6665f, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, -50, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| result = SkOffsetSimplePolygon(starPoly.begin(), starPoly.count(), bounds, -100, |
| &offsetPoly); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, SkIsSimplePolygon(offsetPoly.begin(), offsetPoly.count())); |
| |
| SkTDArray<SkPoint> intersectingPoly; |
| *intersectingPoly.push() = SkPoint::Make(0.0f, -50.0f); |
| *intersectingPoly.push() = SkPoint::Make(14.43f, -25.0f); |
| *intersectingPoly.push() = SkPoint::Make(43.30f, -25.0f); |
| *intersectingPoly.push() = SkPoint::Make(-28.86f, 0.0f); |
| *intersectingPoly.push() = SkPoint::Make(43.30f, 25.0f); |
| *intersectingPoly.push() = SkPoint::Make(14.43f, 25.0f); |
| *intersectingPoly.push() = SkPoint::Make(0.0f, 50.0f); |
| *intersectingPoly.push() = SkPoint::Make(-14.43f, 25.0f); |
| *intersectingPoly.push() = SkPoint::Make(-43.30f, 25.0f); |
| *intersectingPoly.push() = SkPoint::Make(28.86f, 0.0f); |
| *intersectingPoly.push() = SkPoint::Make(-43.30f, -25.0f); |
| *intersectingPoly.push() = SkPoint::Make(-14.43f, -25.0f); |
| |
| // SkOffsetSimplePolygon now assumes that the input is simple, so we'll just check for that |
| result = SkIsSimplePolygon(intersectingPoly.begin(), intersectingPoly.count()); |
| REPORTER_ASSERT(reporter, !result); |
| } |
