| OLD | NEW |
| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 | 9 |
| 10 #ifndef SkClampRange_DEFINED | 10 #ifndef SkClampRange_DEFINED |
| 11 #define SkClampRange_DEFINED | 11 #define SkClampRange_DEFINED |
| 12 | 12 |
| 13 #include "SkFixed.h" | 13 #include "SkFixed.h" |
| 14 | 14 |
| 15 /** | 15 /** |
| 16 * Iteration fixed fx by dx, clamping as you go to [0..0xFFFF], this class | 16 * Iteration fixed fx by dx, clamping as you go to [0..0xFFFF], this class |
| 17 * computes the (up to) 3 spans there are: | 17 * computes the (up to) 3 spans there are: |
| 18 * | 18 * |
| 19 * range0: use constant value V0 | 19 * range0: use constant value V0 |
| 20 * range1: iterate as usual fx += dx | 20 * range1: iterate as usual fx += dx |
| 21 * range2: use constant value V1 | 21 * range2: use constant value V1 |
| 22 */ | 22 */ |
| 23 struct SkClampRange { | 23 struct SkClampRange { |
| 24 int fCount0; // count for fV0 | 24 int fCount0; // count for fV0 |
| 25 int fCount1; // count for interpolating (fV0...fV1) | 25 int fCount1; // count for interpolating (fV0...fV1) |
| 26 int fCount2; // count for fV1 | 26 int fCount2; // count for fV1 |
| 27 SkFixed fFx1; // initial fx value for the fCount1 range. | 27 SkFixed fFx1; // initial fx value for the fCount1 range. |
| 28 // only valid if fCount1 > 0 | 28 // only valid if fCount1 > 0 |
| 29 int fV0, fV1; | 29 int fV0, fV1; |
| 30 bool fOverflowed; // true if we had to clamp due to numerical overflow | |
| 31 | 30 |
| 32 void init(SkFixed fx, SkFixed dx, int count, int v0, int v1); | 31 void init(SkFixed fx, SkFixed dx, int count, int v0, int v1); |
| 33 | 32 |
| 34 private: | 33 private: |
| 35 void initFor1(SkFixed fx); | 34 void initFor1(SkFixed fx); |
| 36 }; | 35 }; |
| 37 | 36 |
| 38 #endif | 37 #endif |
| OLD | NEW |