blob: a1331bbfbc358a5dfe8b361e27b3e5b90eccde7c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#ifndef SkUnitMappers_DEFINED
#define SkUnitMappers_DEFINED
#include "SkUnitMapper.h"
/** This discretizes the range [0...1) into N discret values.
*/
class SkDiscreteMapper : public SkUnitMapper {
public:
SkDiscreteMapper(int segments);
// override from SkUnitMapper
virtual uint16_t mapUnit16(uint16_t x);
protected:
SkDiscreteMapper(SkFlattenableReadBuffer& );
// overrides from SkFlattenable
virtual void flatten(SkFlattenableWriteBuffer& );
virtual Factory getFactory();
private:
int fSegments;
SkFract fScale; // computed from fSegments
static SkFlattenable* Create(SkFlattenableReadBuffer& buffer);
typedef SkUnitMapper INHERITED;
};
/** This returns cos(x), to simulate lighting a sphere, where 0 maps to the
center of the sphere, and 1 maps to the edge.
*/
class SkCosineMapper : public SkUnitMapper {
public:
SkCosineMapper() {}
// override from SkUnitMapper
virtual uint16_t mapUnit16(uint16_t x);
protected:
SkCosineMapper(SkFlattenableReadBuffer&);
// overrides from SkFlattenable
virtual Factory getFactory();
private:
static SkFlattenable* Create(SkFlattenableReadBuffer&);
typedef SkUnitMapper INHERITED;
};
#endif
|
