add conics to path ops

src/pathops/SkIntersections.h

Index: src/pathops/SkIntersections.h
diff --git a/src/pathops/SkIntersections.h b/src/pathops/SkIntersections.h
index 15bac19defdf2a45078187f587751ba1d3ede028..57fb49bcd2d3525970b89063f826d1a06c72a6e0 100644
--- a/src/pathops/SkIntersections.h
+++ b/src/pathops/SkIntersections.h
@@ -7,6 +7,7 @@
 #ifndef SkIntersections_DEFINE
 #define SkIntersections_DEFINE
 
+#include "SkPathOpsConic.h"
 #include "SkPathOpsCubic.h"
 #include "SkPathOpsLine.h"
 #include "SkPathOpsPoint.h"
@@ -49,6 +50,31 @@ public:
         fIsCoincident[1] &= ~bit;
     }
 
+    int conicHorizontal(const SkPoint a[3], SkScalar weight, SkScalar left, SkScalar right,
+                SkScalar y, bool flipped) {
+        SkDConic conic;
+        conic.set(a, weight);
+        fMax = 2;
+        return horizontal(conic, left, right, y, flipped);
+    }
+
+    int conicVertical(const SkPoint a[3], SkScalar weight, SkScalar top, SkScalar bottom,
+            SkScalar x, bool flipped) {
+        SkDConic conic;
+        conic.set(a, weight);
+        fMax = 2;
+        return vertical(conic, top, bottom, x, flipped);
+    }
+
+    int conicLine(const SkPoint a[3], SkScalar weight, const SkPoint b[2]) {
+        SkDConic conic;
+        conic.set(a, weight);
+        SkDLine line;
+        line.set(b);
+        fMax = 3; // 2;  permit small coincident segment + non-coincident intersection
+        return intersect(conic, line);
+    }
+
     int cubicHorizontal(const SkPoint a[4], SkScalar left, SkScalar right, SkScalar y,
                         bool flipped) {
         SkDCubic cubic;
@@ -206,6 +232,7 @@ public:
     int horizontal(const SkDQuad&, double left, double right, double y, bool flipped);
     int horizontal(const SkDQuad&, double left, double right, double y, double tRange[2]);
     int horizontal(const SkDCubic&, double y, double tRange[3]);
+    int horizontal(const SkDConic&, double left, double right, double y, bool flipped);
     int horizontal(const SkDCubic&, double left, double right, double y, bool flipped);
     int horizontal(const SkDCubic&, double left, double right, double y, double tRange[3]);
     // FIXME : does not respect swap
@@ -216,10 +243,16 @@ public:
     int intersect(const SkDLine&, const SkDLine&);
     int intersect(const SkDQuad&, const SkDLine&);
     int intersect(const SkDQuad&, const SkDQuad&);
+    int intersect(const SkDConic&, const SkDLine&);
+    int intersect(const SkDConic&, const SkDQuad&);
+    int intersect(const SkDConic&, const SkDConic&);
     int intersect(const SkDCubic&, const SkDLine&);
+    int intersect(const SkDCubic&, const SkDQuad&);
+    int intersect(const SkDCubic&, const SkDConic&);
     int intersect(const SkDCubic&, const SkDCubic&);
     int intersectRay(const SkDLine&, const SkDLine&);
     int intersectRay(const SkDQuad&, const SkDLine&);
+    int intersectRay(const SkDConic&, const SkDLine&);
     int intersectRay(const SkDCubic&, const SkDLine&);
     void merge(const SkIntersections& , int , const SkIntersections& , int );
     int mostOutside(double rangeStart, double rangeEnd, const SkDPoint& origin) const;
@@ -228,10 +261,16 @@ public:
     void setCoincident(int index);
     int vertical(const SkDLine&, double top, double bottom, double x, bool flipped);
     int vertical(const SkDQuad&, double top, double bottom, double x, bool flipped);
+    int vertical(const SkDConic&, double top, double bottom, double x, bool flipped);
     int vertical(const SkDCubic&, double top, double bottom, double x, bool flipped);
-    int verticalCubic(const SkPoint a[4], SkScalar top, SkScalar bottom, SkScalar x, bool flipped);
-    int verticalLine(const SkPoint a[2], SkScalar top, SkScalar bottom, SkScalar x, bool flipped);
-    int verticalQuad(const SkPoint a[3], SkScalar top, SkScalar bottom, SkScalar x, bool flipped);
+    int verticalConic(const SkPoint a[3], SkScalar weight, SkScalar top, SkScalar bottom,
+                      SkScalar x, bool flipped);
+    int verticalCubic(const SkPoint a[4], SkScalar weight, SkScalar top, SkScalar bottom,
+                      SkScalar x, bool flipped);
+    int verticalLine(const SkPoint a[2], SkScalar weight, SkScalar top, SkScalar bottom,
+                     SkScalar x, bool flipped);
+    int verticalQuad(const SkPoint a[3], SkScalar weight, SkScalar top, SkScalar bottom,
+                     SkScalar x, bool flipped);
 
     int depth() const {
 #ifdef SK_DEBUG
@@ -264,7 +303,7 @@ private:
 #endif
 };
 
-extern int (SkIntersections::* const CurveVertical[])(const SkPoint[], SkScalar top, SkScalar bottom,
-            SkScalar x, bool flipped);
+extern int (SkIntersections::* const CurveVertical[])(const SkPoint[], SkScalar weight,
+            SkScalar top, SkScalar bottom, SkScalar x, bool flipped);
 
 #endif