c0bd9f9fe5
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
114 lines
4.0 KiB
C++
114 lines
4.0 KiB
C++
/*
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* Copyright 2012 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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#ifndef SkPathOps_DEFINED
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#define SkPathOps_DEFINED
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#include "include/core/SkPreConfig.h"
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#include "include/private/SkTArray.h"
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#include "include/private/SkTDArray.h"
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class SkPath;
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struct SkRect;
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// FIXME: move everything below into the SkPath class
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/**
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* The logical operations that can be performed when combining two paths.
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*/
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enum SkPathOp {
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kDifference_SkPathOp, //!< subtract the op path from the first path
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kIntersect_SkPathOp, //!< intersect the two paths
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kUnion_SkPathOp, //!< union (inclusive-or) the two paths
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kXOR_SkPathOp, //!< exclusive-or the two paths
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kReverseDifference_SkPathOp, //!< subtract the first path from the op path
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};
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/** Set this path to the result of applying the Op to this path and the
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specified path: this = (this op operand).
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The resulting path will be constructed from non-overlapping contours.
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The curve order is reduced where possible so that cubics may be turned
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into quadratics, and quadratics maybe turned into lines.
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Returns true if operation was able to produce a result;
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otherwise, result is unmodified.
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@param one The first operand (for difference, the minuend)
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@param two The second operand (for difference, the subtrahend)
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@param op The operator to apply.
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@param result The product of the operands. The result may be one of the
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inputs.
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@return True if the operation succeeded.
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*/
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bool SK_API Op(const SkPath& one, const SkPath& two, SkPathOp op, SkPath* result);
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/** Set this path to a set of non-overlapping contours that describe the
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same area as the original path.
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The curve order is reduced where possible so that cubics may
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be turned into quadratics, and quadratics maybe turned into lines.
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Returns true if operation was able to produce a result;
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otherwise, result is unmodified.
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@param path The path to simplify.
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@param result The simplified path. The result may be the input.
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@return True if simplification succeeded.
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*/
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bool SK_API Simplify(const SkPath& path, SkPath* result);
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/** Set the resulting rectangle to the tight bounds of the path.
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@param path The path measured.
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@param result The tight bounds of the path.
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@return True if the bounds could be computed.
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*/
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bool SK_API TightBounds(const SkPath& path, SkRect* result);
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/** Set the result with fill type winding to area equivalent to path.
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Returns true if successful. Does not detect if path contains contours which
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contain self-crossings or cross other contours; in these cases, may return
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true even though result does not fill same area as path.
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Returns true if operation was able to produce a result;
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otherwise, result is unmodified. The result may be the input.
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@param path The path typically with fill type set to even odd.
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@param result The equivalent path with fill type set to winding.
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@return True if winding path was set.
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*/
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bool SK_API AsWinding(const SkPath& path, SkPath* result);
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/** Perform a series of path operations, optimized for unioning many paths together.
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*/
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class SK_API SkOpBuilder {
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public:
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/** Add one or more paths and their operand. The builder is empty before the first
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path is added, so the result of a single add is (emptyPath OP path).
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@param path The second operand.
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@param _operator The operator to apply to the existing and supplied paths.
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*/
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void add(const SkPath& path, SkPathOp _operator);
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/** Computes the sum of all paths and operands, and resets the builder to its
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initial state.
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@param result The product of the operands.
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@return True if the operation succeeded.
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*/
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bool resolve(SkPath* result);
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private:
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SkTArray<SkPath> fPathRefs;
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SkTDArray<SkPathOp> fOps;
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static bool FixWinding(SkPath* path);
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static void ReversePath(SkPath* path);
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void reset();
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};
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#endif
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