LCOV - code coverage report
Current view: directory - gfx/skia/include/core - SkPerspIter.h (source / functions) Found Hit Coverage
Test: app.info Lines: 1 0 0.0 %
Date: 2012-06-02 Functions: 1 0 0.0 %

       1                 : 
       2                 : /*
       3                 :  * Copyright 2006 The Android Open Source Project
       4                 :  *
       5                 :  * Use of this source code is governed by a BSD-style license that can be
       6                 :  * found in the LICENSE file.
       7                 :  */
       8                 : 
       9                 : 
      10                 : #ifndef SkPerspIter_DEFINED
      11                 : #define SkPerspIter_DEFINED
      12                 : 
      13                 : #include "SkMatrix.h"
      14                 : 
      15                 : class SkPerspIter {
      16                 : public:
      17                 :     /** Iterate a line through the matrix [x,y] ... [x+count-1, y].
      18                 :         @param m    The matrix we will be iterating a line through
      19                 :         @param x    The initial X coordinate to be mapped through the matrix
      20                 :         @param y    The initial Y coordinate to be mapped through the matrix
      21                 :         @param count The number of points (x,y) (x+1,y) (x+2,y) ... we will eventually map
      22                 :     */
      23                 :     SkPerspIter(const SkMatrix& m, SkScalar x, SkScalar y, int count);
      24                 :     
      25                 :     /** Return the buffer of [x,y] fixed point values we will be filling.
      26                 :         This always returns the same value, so it can be saved across calls to
      27                 :         next().
      28                 :     */
      29               0 :     const SkFixed* getXY() const { return fStorage; }
      30                 : 
      31                 :     /** Return the number of [x,y] pairs that have been filled in the getXY() buffer.
      32                 :         When this returns 0, the iterator is finished.
      33                 :     */
      34                 :     int next();
      35                 :     
      36                 : private:
      37                 :     enum {
      38                 :         kShift  = 4,
      39                 :         kCount  = (1 << kShift)
      40                 :     };
      41                 :     const SkMatrix& fMatrix;
      42                 :     SkFixed         fStorage[kCount * 2];
      43                 :     SkFixed         fX, fY;
      44                 :     SkScalar        fSX, fSY;
      45                 :     int             fCount;
      46                 : };
      47                 : 
      48                 : #endif

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