epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2008 The Android Open Source Project |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #ifndef SkUnitMappers_DEFINED |
| 11 | #define SkUnitMappers_DEFINED |
| 12 | |
| 13 | #include "SkUnitMapper.h" |
| 14 | |
| 15 | /** This discretizes the range [0...1) into N discret values. |
| 16 | */ |
| 17 | class SkDiscreteMapper : public SkUnitMapper { |
| 18 | public: |
| 19 | SkDiscreteMapper(int segments); |
| 20 | // override from SkUnitMapper |
| 21 | virtual uint16_t mapUnit16(uint16_t x); |
| 22 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 23 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscreteMapper) |
| 24 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 25 | protected: |
| 26 | SkDiscreteMapper(SkFlattenableReadBuffer& ); |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 27 | virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 28 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | private: |
| 30 | int fSegments; |
| 31 | SkFract fScale; // computed from fSegments |
| 32 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | typedef SkUnitMapper INHERITED; |
| 34 | }; |
| 35 | |
| 36 | /** This returns cos(x), to simulate lighting a sphere, where 0 maps to the |
| 37 | center of the sphere, and 1 maps to the edge. |
| 38 | */ |
| 39 | class SkCosineMapper : public SkUnitMapper { |
| 40 | public: |
| 41 | SkCosineMapper() {} |
| 42 | // override from SkUnitMapper |
| 43 | virtual uint16_t mapUnit16(uint16_t x); |
| 44 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 45 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCosineMapper) |
| 46 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 47 | protected: |
| 48 | SkCosineMapper(SkFlattenableReadBuffer&); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 49 | |
| 50 | private: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 51 | |
| 52 | typedef SkUnitMapper INHERITED; |
| 53 | }; |
| 54 | |
| 55 | #endif |