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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 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 #ifndef SkTwoPointConicalGradient_DEFINED | 9 #ifndef SkTwoPointConicalGradient_DEFINED |
10 #define SkTwoPointConicalGradient_DEFINED | 10 #define SkTwoPointConicalGradient_DEFINED |
11 | 11 |
| 12 #include "math.h" |
| 13 |
12 #include "SkGradientShaderPriv.h" | 14 #include "SkGradientShaderPriv.h" |
13 | 15 |
14 // TODO(dominikg): Worth making it truly immutable (i.e. set values in construct
or)? | 16 // TODO(dominikg): Worth making it truly immutable (i.e. set values in construct
or)? |
15 // Should only be initialized once via init(). Immutable afterwards. | 17 // Should only be initialized once via init(). Immutable afterwards. |
16 struct TwoPtRadial { | 18 struct TwoPtRadial { |
17 enum { | 19 static const float kDontDrawT; |
18 // This value is outside the range SK_FixedMin to SK_FixedMax. | |
19 kDontDrawT = 0x80000000 | |
20 }; | |
21 | 20 |
22 float fCenterX, fCenterY; | 21 float fCenterX, fCenterY; |
23 float fDCenterX, fDCenterY; | 22 float fDCenterX, fDCenterY; |
24 float fRadius; | 23 float fRadius; |
25 float fDRadius; | 24 float fDRadius; |
26 float fA; | 25 float fA; |
27 float fRadius2; | 26 float fRadius2; |
28 float fRDR; | 27 float fRDR; |
29 bool fFlipped; | 28 bool fFlipped; |
30 | 29 |
31 void init(const SkPoint& center0, SkScalar rad0, | 30 void init(const SkPoint& center0, SkScalar rad0, |
32 const SkPoint& center1, SkScalar rad1, | 31 const SkPoint& center1, SkScalar rad1, |
33 bool flipped); | 32 bool flipped); |
34 | 33 |
35 static bool DontDrawT(SkFixed t) { | 34 static bool DontDrawT(float t) { |
36 return kDontDrawT == (uint32_t)t; | 35 return isnan(t); |
37 } | 36 } |
38 }; | 37 }; |
39 | 38 |
40 | 39 |
41 class SkTwoPointConicalGradient : public SkGradientShaderBase { | 40 class SkTwoPointConicalGradient : public SkGradientShaderBase { |
42 TwoPtRadial fRec; | 41 TwoPtRadial fRec; |
43 public: | 42 public: |
44 SkTwoPointConicalGradient(const SkPoint& start, SkScalar startRadius, | 43 SkTwoPointConicalGradient(const SkPoint& start, SkScalar startRadius, |
45 const SkPoint& end, SkScalar endRadius, | 44 const SkPoint& end, SkScalar endRadius, |
46 bool flippedGrad, const Descriptor&); | 45 bool flippedGrad, const Descriptor&); |
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87 SkPoint fCenter2; | 86 SkPoint fCenter2; |
88 SkScalar fRadius1; | 87 SkScalar fRadius1; |
89 SkScalar fRadius2; | 88 SkScalar fRadius2; |
90 bool fFlippedGrad; | 89 bool fFlippedGrad; |
91 | 90 |
92 friend class SkGradientShader; | 91 friend class SkGradientShader; |
93 typedef SkGradientShaderBase INHERITED; | 92 typedef SkGradientShaderBase INHERITED; |
94 }; | 93 }; |
95 | 94 |
96 #endif | 95 #endif |
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