88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
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/*
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* Copyright 2016 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 "Fuzz.h"
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#include "SkPath.h"
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#include "SkPathOps.h"
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const int kLastOp = SkPathOp::kReverseDifference_SkPathOp;
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void BuildPath(Fuzz* fuzz,
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SkPath* path,
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int last_verb) {
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uint8_t operation;
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SkScalar a, b, c, d, e, f;
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while (fuzz->next<uint8_t>(&operation)) {
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switch (operation % (last_verb + 1)) {
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case SkPath::Verb::kMove_Verb:
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if (!fuzz->next<SkScalar>(&a) || !fuzz->next<SkScalar>(&b))
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return;
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path->moveTo(a, b);
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break;
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case SkPath::Verb::kLine_Verb:
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if (!fuzz->next<SkScalar>(&a) || !fuzz->next<SkScalar>(&b))
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return;
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path->lineTo(a, b);
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break;
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case SkPath::Verb::kQuad_Verb:
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if (!fuzz->next<SkScalar>(&a) ||
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!fuzz->next<SkScalar>(&b) ||
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!fuzz->next<SkScalar>(&c) ||
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!fuzz->next<SkScalar>(&d))
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return;
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path->quadTo(a, b, c, d);
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break;
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case SkPath::Verb::kConic_Verb:
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if (!fuzz->next<SkScalar>(&a) ||
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!fuzz->next<SkScalar>(&b) ||
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!fuzz->next<SkScalar>(&c) ||
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!fuzz->next<SkScalar>(&d) ||
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!fuzz->next<SkScalar>(&e))
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return;
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path->conicTo(a, b, c, d, e);
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break;
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case SkPath::Verb::kCubic_Verb:
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if (!fuzz->next<SkScalar>(&a) ||
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!fuzz->next<SkScalar>(&b) ||
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!fuzz->next<SkScalar>(&c) ||
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!fuzz->next<SkScalar>(&d) ||
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!fuzz->next<SkScalar>(&e) ||
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!fuzz->next<SkScalar>(&f))
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return;
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path->cubicTo(a, b, c, d, e, f);
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break;
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case SkPath::Verb::kClose_Verb:
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path->close();
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break;
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case SkPath::Verb::kDone_Verb:
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// In this case, simply exit.
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return;
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}
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}
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}
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DEF_FUZZ(Pathop, fuzz) {
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SkOpBuilder builder;
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while (fuzz->remaining() >= sizeof(uint8_t)) {
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SkPath path;
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uint8_t op = fuzz->nextB();
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BuildPath(fuzz, &path, SkPath::Verb::kDone_Verb);
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builder.add(path, static_cast<SkPathOp>(op % (kLastOp + 1)));
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}
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SkPath result;
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builder.resolve(&result);
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}
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