e16efc1882
git-svn-id: http://skia.googlecode.com/svn/trunk@7406 2bbb7eff-a529-9590-31e7-b0007b416f81
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
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/*
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* Copyright 2008 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkUnitMappers_DEFINED
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#define SkUnitMappers_DEFINED
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#include "SkUnitMapper.h"
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/** This discretizes the range [0...1) into N discret values.
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*/
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class SkDiscreteMapper : public SkUnitMapper {
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public:
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SkDiscreteMapper(int segments);
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// override from SkUnitMapper
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virtual uint16_t mapUnit16(uint16_t x);
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscreteMapper)
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protected:
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SkDiscreteMapper(SkFlattenableReadBuffer& );
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virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
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private:
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int fSegments;
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SkFract fScale; // computed from fSegments
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typedef SkUnitMapper INHERITED;
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};
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/** This returns cos(x), to simulate lighting a sphere, where 0 maps to the
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center of the sphere, and 1 maps to the edge.
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*/
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class SkCosineMapper : public SkUnitMapper {
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public:
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SkCosineMapper() {}
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// override from SkUnitMapper
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virtual uint16_t mapUnit16(uint16_t x);
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCosineMapper)
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protected:
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SkCosineMapper(SkFlattenableReadBuffer&);
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private:
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typedef SkUnitMapper INHERITED;
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};
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#endif
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