cumulative pathops patch

src/pathops/SkOpAngle.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkOpAngle_DEFINED
 #define SkOpAngle_DEFINED
 
-#include "SkChunkAlloc.h"
 #include "SkLineParameters.h"
+#if DEBUG_ANGLE
+#include "SkString.h"
+#endif
 
+class SkOpContour;
+class SkOpPtT;
 class SkOpSegment;
-struct SkOpSpan;
+class SkOpSpanBase;
+class SkOpSpan;
 
-// sorting angles
-// given angles of {dx dy ddx ddy dddx dddy} sort them
-class SkOpAngle {
-public:
-    enum { kStackBasedCount = 8 }; // FIXME: determine what this should be
+struct SkOpAngle {
     enum IncludeType {
         kUnaryWinding,
         kUnaryXor,
         kBinarySingle,
         kBinaryOpp,
     };
 
+    bool after(SkOpAngle* test);
+    int allOnOneSide(const SkOpAngle* test);
+    bool checkCrossesZero() const;
+    void checkNearCoincidence();
+    bool checkParallel(SkOpAngle* );
+    bool computeSector();
+    int convexHullOverlaps(const SkOpAngle* ) const;
 
-    int end() const {
+    const SkOpAngle* debugAngle(int id) const;
+    SkOpContour* debugContour(int id);
+
+    int debugID() const {
+        return PATH_OPS_DEBUG_RELEASE(fID, -1);
+    }
+
+#if DEBUG_SORT
+    void debugLoop() const;
+#endif
+
+#if DEBUG_ANGLE
+    SkString debugPart() const;
+#endif
+    const SkOpPtT* debugPtT(int id) const;
+    const SkOpSegment* debugSegment(int id) const;
+    const SkOpSpanBase* debugSpan(int id) const;
+    void debugValidate() const; 
+    void debugValidateNext() const;  // in debug builds, verify that angle loop is uncorrupted
+    double distEndRatio(double dist) const;
+    // available to testing only
+    void dump() const;
+    void dumpCurves() const;
+    void dumpLoop() const;
+    void dumpOne(bool functionHeader) const;
+    void dumpTo(const SkOpSegment* fromSeg, const SkOpAngle* ) const;
+    void dumpTest() const;
+
+    SkOpSpanBase* end() const {
         return fEnd;
     }
 
-    const SkOpAngle* findFirst() const;
-
-    bool inLoop() const {
-        return !!fNext;
-    }
-
+    bool endsIntersect(SkOpAngle* );
+    bool endToSide(const SkOpAngle* rh, bool* inside) const;
+    SkOpAngle* findFirst();
+    int findSector(SkPath::Verb verb, double x, double y) const;
+    SkOpGlobalState* globalState() const;
     void insert(SkOpAngle* );
-    bool isHorizontal() const;
-    SkOpSpan* lastMarked() const;
-    bool loopContains(const SkOpAngle& ) const;
+    SkOpSpanBase* lastMarked() const;
+    bool loopContains(const SkOpAngle* ) const;
     int loopCount() const;
     void markStops();
     bool merge(SkOpAngle* );
+    double midT() const;
+    bool midToSide(const SkOpAngle* rh, bool* inside) const;
 
     SkOpAngle* next() const {
         return fNext;
     }
 
+    bool oppositePlanes(const SkOpAngle* rh) const;
+    bool orderable(SkOpAngle* rh);  // false == this < rh ; true == this > rh
     SkOpAngle* previous() const;
 
     int sectorEnd() const {
         return fSectorEnd;
     }
 
     int sectorStart() const {
         return fSectorStart;
     }
 
-    void set(const SkOpSegment* segment, int start, int end);
+    SkOpSegment* segment() const;
 
-    void setLastMarked(SkOpSpan* marked) {
+    void set(SkOpSpanBase* start, SkOpSpanBase* end);
+    void setCurveHullSweep();
+
+    void setID(int id) {
+        PATH_OPS_DEBUG_CODE(fID = id);
+    }
+
+    void setLastMarked(SkOpSpanBase* marked) {
         fLastMarked = marked;
     }
 
-    SkOpSegment* segment() const {
-        return const_cast<SkOpSegment*>(fSegment);
+    void setSector();
+    void setSpans();
+    int sign() const;
+
+    SkOpSpanBase* start() const {
+        return fStart;
     }
 
-    int sign() const {
-        return SkSign32(fStart - fEnd);
-    }
-
-    bool small() const;
-
-    int start() const {
-        return fStart;
-    }
+    SkOpSpan* starter();
+    bool tangentsDiverge(const SkOpAngle* rh, double s0xt0) const;
 
     bool unorderable() const {
         return fUnorderable;
     }
 
-    // available to testing only
-#if DEBUG_SORT
-    void debugLoop() const;  // called by code during run
-#endif
-#if DEBUG_ANGLE
-    void debugSameAs(const SkOpAngle* compare) const;
-#endif
-    void dump() const;
-    void dumpLoop() const;
-    void dumpTo(const SkOpSegment* fromSeg, const SkOpAngle* ) const;
-
-#if DEBUG_ANGLE
-    int debugID() const { return fID; }
-
-    void setID(int id) {
-        fID = id;
-    }
-#else
-    int debugID() const { return 0; }
-#endif
-
-#if DEBUG_VALIDATE
-    void debugValidateLoop() const;
-#endif
-
-private:
-    bool after(const SkOpAngle* test) const;
-    int allOnOneSide(const SkOpAngle& test) const;
-    bool calcSlop(double x, double y, double rx, double ry, bool* result) const;
-    bool checkCrossesZero() const;
-    bool checkParallel(const SkOpAngle& ) const;
-    bool computeSector();
-    int convexHullOverlaps(const SkOpAngle& ) const;
-    double distEndRatio(double dist) const;
-    int findSector(SkPath::Verb verb, double x, double y) const;
-    bool endsIntersect(const SkOpAngle& ) const;
-    double midT() const;
-    bool oppositePlanes(const SkOpAngle& rh) const;
-    bool orderable(const SkOpAngle& rh) const;  // false == this < rh ; true == this > rh
-    bool overlap(const SkOpAngle& test) const;
-    void setCurveHullSweep();
-    void setSector();
-    void setSpans();
-    bool tangentsDiverge(const SkOpAngle& rh, double s0xt0) const;
-
-    SkDCubic fCurvePart; // the curve from start to end
+    SkDCubic fCurvePart;  // the curve from start to end
     double fSide;
     SkLineParameters fTangentHalf;  // used only to sort a pair of lines or line-like sections
-    const SkOpSegment* fSegment;
     SkOpAngle* fNext;
-    SkOpSpan* fLastMarked;
+    SkOpSpanBase* fLastMarked;
     SkDVector fSweep[2];
-    int fStart;
-    int fEnd;
-    int fComputedEnd;
+    SkOpSpanBase* fStart;
+    SkOpSpanBase* fEnd;
+    SkOpSpanBase* fComputedEnd;
     int fSectorMask;
     int8_t fSectorStart;  // in 32nds of a circle
     int8_t fSectorEnd;
     bool fIsCurve;
-    bool fStop; // set if ordered angle is greater than the previous
-    mutable bool fUnorderable;  // this is editable by orderable()
+    bool fStop;  // set if ordered angle is greater than the previous
+    bool fUnorderable;
     bool fUnorderedSweep;  // set when a cubic's first control point between the sweep vectors
     bool fComputeSector;
     bool fComputedSector;
+    bool fCheckCoincidence;
+    PATH_OPS_DEBUG_CODE(int fID);
 
-#if DEBUG_ANGLE
-    int fID;
-#endif
-#if DEBUG_VALIDATE
-    void debugValidateNext() const;  // in debug builds, verify that angle loop is uncorrupted
-#else
-    void debugValidateNext() const {}
-#endif
-    void dumpOne(bool showFunc) const;  // available to testing only
-    void dumpPartials() const;  // utility to be called by user from debugger
-    friend class PathOpsAngleTester;
 };
 
-class SkOpAngleSet {
-public:
-    SkOpAngleSet();
-    ~SkOpAngleSet();
-    SkOpAngle& push_back();
-    void reset();
-private:
-    void dump() const;  // utility to be called by user from debugger
-    SkChunkAlloc* fAngles;
-#if DEBUG_ANGLE
-    int fCount;
-#endif
-};
+
 
 #endif