Stub for conic section max curvature

include/core/SkGeometry.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkGeometry_DEFINED
@@ skipping 237 matching lines @@
      */
     int chopIntoQuadsPOW2(SkPoint pts[], int pow2) const;
 
     bool findXExtrema(SkScalar* t) const;
     bool findYExtrema(SkScalar* t) const;
     bool chopAtXExtrema(SkConic dst[2]) const;
     bool chopAtYExtrema(SkConic dst[2]) const;
 
     void computeTightBounds(SkRect* bounds) const;
     void computeFastBounds(SkRect* bounds) const;
+
+    // Find the parameter value where the conic takes on its maximum curvature.

[reed1, 2014/02/21 17:09:41]

nit: /** style comments match others in (esp. public) headers, and are
digestible by doxygen.

+    // Returns true if the max curvature is inside the 0..1 parameter range,
+    // otherwise returns false and leaves its t parameter unchanged.
+    bool findMaxCurvature(SkScalar* t) const;
 };
 
 #include "SkTemplates.h"
 
 /**
  *  Help class to allocate storage for approximating a conic with N quads.
  */
 class SkAutoConicToQuads {
 public:
     SkAutoConicToQuads() : fQuadCount(0) {}
@@ skipping 30 matching lines @@
 private:
     enum {
         kQuadCount = 8, // should handle most conics
         kPointCount = 1 + 2 * kQuadCount,
     };
     SkAutoSTMalloc<kPointCount, SkPoint> fStorage;
     int fQuadCount; // #quads for current usage
 };
 
 #endif