gfx/skia/trunk/include/utils/SkCullPoints.h@b8a032363ba2 (annotated)
gfx/skia/trunk/include/utils/SkCullPoints.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2006 The Android Open Source Project |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef SkCullPoints_DEFINED |
| michael@0 | 11 | #define SkCullPoints_DEFINED |
| michael@0 | 12 | |
| michael@0 | 13 | #include "SkRect.h" |
| michael@0 | 14 | |
| michael@0 | 15 | class SkCullPoints { |
| michael@0 | 16 | public: |
| michael@0 | 17 | SkCullPoints(); |
| michael@0 | 18 | SkCullPoints(const SkIRect& r); |
| michael@0 | 19 | |
| michael@0 | 20 | void reset(const SkIRect& r); |
| michael@0 | 21 | |
| michael@0 | 22 | /** Start a contour at (x,y). Follow this with call(s) to lineTo(...) |
| michael@0 | 23 | */ |
| michael@0 | 24 | void moveTo(int x, int y); |
| michael@0 | 25 | |
| michael@0 | 26 | enum LineToResult { |
| michael@0 | 27 | kNo_Result, //!< line segment was completely clipped out |
| michael@0 | 28 | kLineTo_Result, //!< path.lineTo(pts[1]); |
| michael@0 | 29 | kMoveToLineTo_Result //!< path.moveTo(pts[0]); path.lineTo(pts[1]); |
| michael@0 | 30 | }; |
| michael@0 | 31 | /** Connect a line to the previous call to lineTo (or moveTo). |
| michael@0 | 32 | */ |
| michael@0 | 33 | LineToResult lineTo(int x, int y, SkIPoint pts[2]); |
| michael@0 | 34 | |
| michael@0 | 35 | private: |
| michael@0 | 36 | SkIRect fR; // the caller's rectangle |
| michael@0 | 37 | SkIPoint fAsQuad[4]; // cache of fR as 4 points |
| michael@0 | 38 | SkIPoint fPrevPt; // private state |
| michael@0 | 39 | LineToResult fPrevResult; // private state |
| michael@0 | 40 | |
| michael@0 | 41 | bool sect_test(int x0, int y0, int x1, int y1) const; |
| michael@0 | 42 | }; |
| michael@0 | 43 | |
| michael@0 | 44 | ///////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 45 | |
| michael@0 | 46 | class SkPath; |
| michael@0 | 47 | |
| michael@0 | 48 | /** \class SkCullPointsPath |
| michael@0 | 49 | |
| michael@0 | 50 | Similar to SkCullPoints, but this class handles the return values |
| michael@0 | 51 | from lineTo, and automatically builds a SkPath with the result(s). |
| michael@0 | 52 | */ |
| michael@0 | 53 | class SkCullPointsPath { |
| michael@0 | 54 | public: |
| michael@0 | 55 | SkCullPointsPath(); |
| michael@0 | 56 | SkCullPointsPath(const SkIRect& r, SkPath* dst); |
| michael@0 | 57 | |
| michael@0 | 58 | void reset(const SkIRect& r, SkPath* dst); |
| michael@0 | 59 | |
| michael@0 | 60 | void moveTo(int x, int y); |
| michael@0 | 61 | void lineTo(int x, int y); |
| michael@0 | 62 | |
| michael@0 | 63 | private: |
| michael@0 | 64 | SkCullPoints fCP; |
| michael@0 | 65 | SkPath* fPath; |
| michael@0 | 66 | }; |
| michael@0 | 67 | |
| michael@0 | 68 | bool SkHitTestPath(const SkPath&, SkRect& target, bool hires); |
| michael@0 | 69 | bool SkHitTestPath(const SkPath&, SkScalar x, SkScalar y, bool hires); |
| michael@0 | 70 | |
| michael@0 | 71 | #endif |
