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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #ifndef SkPathOpsPoint_DEFINED | 7 #ifndef SkPathOpsPoint_DEFINED |
8 #define SkPathOpsPoint_DEFINED | 8 #define SkPathOpsPoint_DEFINED |
9 | 9 |
10 #include "SkPathOpsTypes.h" | 10 #include "SkPathOpsTypes.h" |
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95 fX -= v.fX; | 95 fX -= v.fX; |
96 fY -= v.fY; | 96 fY -= v.fY; |
97 } | 97 } |
98 | 98 |
99 // note: this can not be implemented with | 99 // note: this can not be implemented with |
100 // return approximately_equal(a.fY, fY) && approximately_equal(a.fX, fX); | 100 // return approximately_equal(a.fY, fY) && approximately_equal(a.fX, fX); |
101 // because that will not take the magnitude of the values | 101 // because that will not take the magnitude of the values |
102 bool approximatelyEqual(const SkDPoint& a) const { | 102 bool approximatelyEqual(const SkDPoint& a) const { |
103 double denom = SkTMax(fabs(fX), SkTMax(fabs(fY), | 103 double denom = SkTMax(fabs(fX), SkTMax(fabs(fY), |
104 SkTMax(fabs(a.fX), fabs(a.fY)))); | 104 SkTMax(fabs(a.fX), fabs(a.fY)))); |
105 if (denom == 0) { | 105 if (precisely_zero(denom)) { |
106 return true; | 106 return true; |
107 } | 107 } |
108 double inv = 1 / denom; | 108 double inv = 1 / denom; |
109 return approximately_equal(fX * inv, a.fX * inv) | 109 return approximately_equal(fX * inv, a.fX * inv) |
110 && approximately_equal(fY * inv, a.fY * inv); | 110 && approximately_equal(fY * inv, a.fY * inv); |
111 } | 111 } |
112 | 112 |
113 bool approximatelyEqual(const SkPoint& a) const { | 113 bool approximatelyEqual(const SkPoint& a) const { |
114 return AlmostEqualUlps(SkDoubleToScalar(fX), a.fX) | 114 return AlmostEqualUlps(SkDoubleToScalar(fX), a.fX) |
115 && AlmostEqualUlps(SkDoubleToScalar(fY), a.fY); | 115 && AlmostEqualUlps(SkDoubleToScalar(fY), a.fY); |
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155 double moreRoughlyEqual(const SkDPoint& a) const { | 155 double moreRoughlyEqual(const SkDPoint& a) const { |
156 return more_roughly_equal(a.fY, fY) && more_roughly_equal(a.fX, fX); | 156 return more_roughly_equal(a.fY, fY) && more_roughly_equal(a.fX, fX); |
157 } | 157 } |
158 | 158 |
159 double roughlyEqual(const SkDPoint& a) const { | 159 double roughlyEqual(const SkDPoint& a) const { |
160 return roughly_equal(a.fY, fY) && roughly_equal(a.fX, fX); | 160 return roughly_equal(a.fY, fY) && roughly_equal(a.fX, fX); |
161 } | 161 } |
162 }; | 162 }; |
163 | 163 |
164 #endif | 164 #endif |
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