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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:36 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:36 -0800
commit6eb364108744656fcd23a96a478aa772cd4e85bc (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /include/utils/SkCullPoints.h
parenta23c4e24d873b11674987f97f1946e1c4d97e782 (diff)
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auto import from //depot/cupcake/@135843
Diffstat (limited to 'include/utils/SkCullPoints.h')
-rw-r--r--include/utils/SkCullPoints.h75
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diff --git a/include/utils/SkCullPoints.h b/include/utils/SkCullPoints.h
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--- a/include/utils/SkCullPoints.h
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-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef SkCullPoints_DEFINED
-#define SkCullPoints_DEFINED
-
-#include "SkRect.h"
-
-class SkCullPoints {
-public:
- SkCullPoints();
- SkCullPoints(const SkIRect& r);
-
- void reset(const SkIRect& r);
-
- /** Start a contour at (x,y). Follow this with call(s) to lineTo(...)
- */
- void moveTo(int x, int y);
-
- enum LineToResult {
- kNo_Result, //!< line segment was completely clipped out
- kLineTo_Result, //!< path.lineTo(pts[1]);
- kMoveToLineTo_Result //!< path.moveTo(pts[0]); path.lineTo(pts[1]);
- };
- /** Connect a line to the previous call to lineTo (or moveTo).
- */
- LineToResult lineTo(int x, int y, SkIPoint pts[2]);
-
-private:
- SkIRect fR; // the caller's rectangle
- SkIPoint fAsQuad[4]; // cache of fR as 4 points
- SkIPoint fPrevPt; // private state
- LineToResult fPrevResult; // private state
-
- bool sect_test(int x0, int y0, int x1, int y1) const;
-};
-
-/////////////////////////////////////////////////////////////////////////////////
-
-class SkPath;
-
-/** \class SkCullPointsPath
-
- Similar to SkCullPoints, but this class handles the return values
- from lineTo, and automatically builds a SkPath with the result(s).
-*/
-class SkCullPointsPath {
-public:
- SkCullPointsPath();
- SkCullPointsPath(const SkIRect& r, SkPath* dst);
-
- void reset(const SkIRect& r, SkPath* dst);
-
- void moveTo(int x, int y);
- void lineTo(int x, int y);
-
-private:
- SkCullPoints fCP;
- SkPath* fPath;
-};
-
-#endif