1 /* libs/graphics/sgl/SkStrokerPriv.h 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #ifndef SkStrokerPriv_DEFINED 19 #define SkStrokerPriv_DEFINED 20 21 #include "SkStroke.h" 22 23 #define CWX(x, y) (-y) 24 #define CWY(x, y) (x) 25 #define CCWX(x, y) (y) 26 #define CCWY(x, y) (-x) 27 28 #define CUBIC_ARC_FACTOR ((SK_ScalarSqrt2 - SK_Scalar1) * 4 / 3) 29 30 class SkStrokerPriv { 31 public: 32 typedef void (*CapProc)(SkPath* path, 33 const SkPoint& pivot, 34 const SkVector& normal, 35 const SkPoint& stop, 36 SkPath* otherPath); 37 38 typedef void (*JoinProc)(SkPath* outer, SkPath* inner, 39 const SkVector& beforeUnitNormal, 40 const SkPoint& pivot, 41 const SkVector& afterUnitNormal, 42 SkScalar radius, SkScalar invMiterLimit, 43 bool prevIsLine, bool currIsLine); 44 45 static CapProc CapFactory(SkPaint::Cap); 46 static JoinProc JoinFactory(SkPaint::Join); 47 }; 48 49 #endif 50 51
