| /* |
| * Copyright 2018 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "fuzz/Fuzz.h" |
| |
| #include "include/core/SkPoint.h" |
| #include "include/private/base/SkTDArray.h" |
| #include "include/private/base/SkTemplates.h" |
| #include "src/utils/SkPolyUtils.h" |
| |
| using namespace skia_private; |
| |
| #if !defined(SK_ENABLE_OPTIMIZE_SIZE) |
| void inline ignoreResult(bool ) {} |
| |
| // clamps the point to the nearest 16th of a pixel |
| static SkPoint sanitize_point(const SkPoint& in) { |
| SkPoint out; |
| out.fX = SkScalarRoundToScalar(16.f*in.fX)*0.0625f; |
| out.fY = SkScalarRoundToScalar(16.f*in.fY)*0.0625f; |
| return out; |
| } |
| |
| DEF_FUZZ(PolyUtils, fuzz) { |
| int count; |
| fuzz->nextRange(&count, 0, 512); |
| AutoSTMalloc<64, SkPoint> polygon(count); |
| for (int index = 0; index < count; ++index) { |
| fuzz->next(&polygon[index].fX, &polygon[index].fY); |
| polygon[index] = sanitize_point(polygon[index]); |
| } |
| SkRect bounds; |
| bounds.setBoundsCheck(polygon, count); |
| |
| ignoreResult(SkGetPolygonWinding(polygon, count)); |
| bool isConvex = SkIsConvexPolygon(polygon, count); |
| bool isSimple = SkIsSimplePolygon(polygon, count); |
| |
| SkTDArray<SkPoint> output; |
| if (isConvex) { |
| SkScalar inset; |
| fuzz->next(&inset); |
| ignoreResult(SkInsetConvexPolygon(polygon, count, inset, &output)); |
| } |
| |
| if (isSimple) { |
| SkScalar offset; |
| // Limit this to prevent timeouts. |
| // This should be fine, as this is roughly the range we expect from the shadow algorithm. |
| fuzz->nextRange(&offset, -1000, 1000); |
| ignoreResult(SkOffsetSimplePolygon(polygon, count, bounds, offset, &output)); |
| |
| AutoSTMalloc<64, uint16_t> indexMap(count); |
| for (int index = 0; index < count; ++index) { |
| fuzz->next(&indexMap[index]); |
| } |
| SkTDArray<uint16_t> outputIndices; |
| ignoreResult(SkTriangulateSimplePolygon(polygon, indexMap, count, &outputIndices)); |
| } |
| } |
| #else |
| DEF_FUZZ(PolyUtils, fuzz) {} |
| #endif // !defined(SK_ENABLE_OPTIMIZE_SIZE) |