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107 lines
5.5 KiB
107 lines
5.5 KiB
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "src/utils/SkPolyUtils.h"
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#include "tests/Test.h"
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DEF_TEST(InsetConvexPoly, reporter) {
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SkTDArray<SkPoint> rrectPoly;
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// round rect
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*rrectPoly.push() = SkPoint::Make(-100, 55);
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*rrectPoly.push() = SkPoint::Make(100, 55);
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*rrectPoly.push() = SkPoint::Make(100 + 2.5f, 50 + 4.330127f);
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*rrectPoly.push() = SkPoint::Make(100 + 3.535534f, 50 + 3.535534f);
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*rrectPoly.push() = SkPoint::Make(100 + 4.330127f, 50 + 2.5f);
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*rrectPoly.push() = SkPoint::Make(105, 50);
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*rrectPoly.push() = SkPoint::Make(105, -50);
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*rrectPoly.push() = SkPoint::Make(100 + 4.330127f, -50 - 2.5f);
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*rrectPoly.push() = SkPoint::Make(100 + 3.535534f, -50 - 3.535534f);
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*rrectPoly.push() = SkPoint::Make(100 + 2.5f, -50 - 4.330127f);
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*rrectPoly.push() = SkPoint::Make(100, -55);
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*rrectPoly.push() = SkPoint::Make(-100, -55);
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*rrectPoly.push() = SkPoint::Make(-100 - 2.5f, -50 - 4.330127f);
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*rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, -50 - 3.535534f);
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*rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, -50 - 2.5f);
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*rrectPoly.push() = SkPoint::Make(-105, -50);
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*rrectPoly.push() = SkPoint::Make(-105, 50);
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*rrectPoly.push() = SkPoint::Make(-100 - 4.330127f, 50 + 2.5f);
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*rrectPoly.push() = SkPoint::Make(-100 - 3.535534f, 50 + 3.535534f);
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*rrectPoly.push() = SkPoint::Make(-100 - 2.5f, 50 + 4.330127f);
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REPORTER_ASSERT(reporter, SkIsConvexPolygon(rrectPoly.begin(), rrectPoly.count()));
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// inset a little
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SkTDArray<SkPoint> insetPoly;
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bool result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 3, &insetPoly);
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REPORTER_ASSERT(reporter, result);
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REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count()));
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// inset to rect
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result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 10, &insetPoly);
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REPORTER_ASSERT(reporter, result);
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REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count()));
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REPORTER_ASSERT(reporter, insetPoly.count() == 4);
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if (insetPoly.count() == 4) {
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REPORTER_ASSERT(reporter, insetPoly[0].equals(-95, 45));
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REPORTER_ASSERT(reporter, insetPoly[1].equals(95, 45));
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REPORTER_ASSERT(reporter, insetPoly[2].equals(95, -45));
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REPORTER_ASSERT(reporter, insetPoly[3].equals(-95, -45));
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}
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// just to full inset
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// fails, but outputs a line segment
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result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 55, &insetPoly);
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REPORTER_ASSERT(reporter, !result);
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REPORTER_ASSERT(reporter, !SkIsConvexPolygon(insetPoly.begin(), insetPoly.count()));
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REPORTER_ASSERT(reporter, insetPoly.count() == 2);
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if (insetPoly.count() == 2) {
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REPORTER_ASSERT(reporter, insetPoly[0].equals(-50, 0));
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REPORTER_ASSERT(reporter, insetPoly[1].equals(50, 0));
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}
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// past full inset
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result = SkInsetConvexPolygon(rrectPoly.begin(), rrectPoly.count(), 75, &insetPoly);
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REPORTER_ASSERT(reporter, !result);
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REPORTER_ASSERT(reporter, insetPoly.count() == 1);
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// troublesome case
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SkTDArray<SkPoint> clippedRRectPoly;
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*clippedRRectPoly.push() = SkPoint::Make(335.928101f, 428.219055f);
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*clippedRRectPoly.push() = SkPoint::Make(330.414459f, 423.034912f);
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*clippedRRectPoly.push() = SkPoint::Make(325.749084f, 417.395508f);
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*clippedRRectPoly.push() = SkPoint::Make(321.931946f, 411.300842f);
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*clippedRRectPoly.push() = SkPoint::Make(318.963074f, 404.750977f);
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*clippedRRectPoly.push() = SkPoint::Make(316.842468f, 397.745850f);
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*clippedRRectPoly.push() = SkPoint::Make(315.570068f, 390.285522f);
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*clippedRRectPoly.push() = SkPoint::Make(315.145966f, 382.369965f);
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*clippedRRectPoly.push() = SkPoint::Make(315.570068f, 374.454346f);
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*clippedRRectPoly.push() = SkPoint::Make(316.842468f, 366.994019f);
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*clippedRRectPoly.push() = SkPoint::Make(318.963074f, 359.988892f);
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*clippedRRectPoly.push() = SkPoint::Make(321.931946f, 353.439056f);
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*clippedRRectPoly.push() = SkPoint::Make(325.749084f, 347.344421f);
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*clippedRRectPoly.push() = SkPoint::Make(330.414459f, 341.705017f);
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*clippedRRectPoly.push() = SkPoint::Make(335.928101f, 336.520813f);
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*clippedRRectPoly.push() = SkPoint::Make(342.289948f, 331.791901f);
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*clippedRRectPoly.push() = SkPoint::Make(377.312134f, 331.791901f);
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*clippedRRectPoly.push() = SkPoint::Make(381.195313f, 332.532593f);
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*clippedRRectPoly.push() = SkPoint::Make(384.464935f, 334.754700f);
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*clippedRRectPoly.push() = SkPoint::Make(386.687042f, 338.024292f);
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*clippedRRectPoly.push() = SkPoint::Make(387.427765f, 341.907532f);
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*clippedRRectPoly.push() = SkPoint::Make(387.427765f, 422.832367f);
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*clippedRRectPoly.push() = SkPoint::Make(386.687042f, 426.715576f);
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*clippedRRectPoly.push() = SkPoint::Make(384.464935f, 429.985168f);
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*clippedRRectPoly.push() = SkPoint::Make(381.195313f, 432.207275f);
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*clippedRRectPoly.push() = SkPoint::Make(377.312134f, 432.947998f);
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*clippedRRectPoly.push() = SkPoint::Make(342.289948f, 432.947998f);
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REPORTER_ASSERT(reporter, SkIsConvexPolygon(clippedRRectPoly.begin(),
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clippedRRectPoly.count()));
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result = SkInsetConvexPolygon(clippedRRectPoly.begin(), clippedRRectPoly.count(), 32.3699417f,
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&insetPoly);
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REPORTER_ASSERT(reporter, result);
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REPORTER_ASSERT(reporter, SkIsConvexPolygon(insetPoly.begin(), insetPoly.count()));
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}
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