1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/pathops/SkPathOps.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,57 @@
1.4 +/*
1.5 + * Copyright 2012 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +#ifndef SkPathOps_DEFINED
1.11 +#define SkPathOps_DEFINED
1.12 +
1.13 +#include "SkPreConfig.h"
1.14 +
1.15 +class SkPath;
1.16 +
1.17 +// FIXME: move everything below into the SkPath class
1.18 +/**
1.19 + * The logical operations that can be performed when combining two paths.
1.20 + */
1.21 +enum SkPathOp {
1.22 + kDifference_PathOp, //!< subtract the op path from the first path
1.23 + kIntersect_PathOp, //!< intersect the two paths
1.24 + kUnion_PathOp, //!< union (inclusive-or) the two paths
1.25 + kXOR_PathOp, //!< exclusive-or the two paths
1.26 + kReverseDifference_PathOp, //!< subtract the first path from the op path
1.27 +};
1.28 +
1.29 +/** Set this path to the result of applying the Op to this path and the
1.30 + specified path: this = (this op operand).
1.31 + The resulting path will be constructed from non-overlapping contours.
1.32 + The curve order is reduced where possible so that cubics may be turned
1.33 + into quadratics, and quadratics maybe turned into lines.
1.34 +
1.35 + Returns true if operation was able to produce a result;
1.36 + otherwise, result is unmodified.
1.37 +
1.38 + @param one The first operand (for difference, the minuend)
1.39 + @param two The second operand (for difference, the subtrahend)
1.40 + @param result The product of the operands. The result may be one of the
1.41 + inputs.
1.42 + @return True if operation succeeded.
1.43 + */
1.44 +bool SK_API Op(const SkPath& one, const SkPath& two, SkPathOp op, SkPath* result);
1.45 +
1.46 +/** Set this path to a set of non-overlapping contours that describe the
1.47 + same area as the original path.
1.48 + The curve order is reduced where possible so that cubics may
1.49 + be turned into quadratics, and quadratics maybe turned into lines.
1.50 +
1.51 + Returns true if operation was able to produce a result;
1.52 + otherwise, result is unmodified.
1.53 +
1.54 + @param path The path to simplify.
1.55 + @param result The simplified path. The result may be the input.
1.56 + @return True if simplification succeeded.
1.57 + */
1.58 +bool SK_API Simplify(const SkPath& path, SkPath* result);
1.59 +
1.60 +#endif
