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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Defines a simple float vector class. This class is used to indicate a | 5 // Defines a simple float vector class. This class is used to indicate a |
| 6 // distance in two dimensions between two points. Subtracting two points should | 6 // distance in two dimensions between two points. Subtracting two points should |
| 7 // produce a vector, and adding a vector to a point produces the point at the | 7 // produce a vector, and adding a vector to a point produces the point at the |
| 8 // vector's distance from the original point. | 8 // vector's distance from the original point. |
| 9 | 9 |
| 10 #ifndef UI_GFX_VECTOR2D_F_H_ | 10 #ifndef UI_GFX_VECTOR2D_F_H_ |
| 11 #define UI_GFX_VECTOR2D_F_H_ | 11 #define UI_GFX_VECTOR2D_F_H_ |
| 12 | 12 |
| 13 #include <string> | 13 #include <string> |
| 14 | 14 |
| 15 #include "ui/gfx/gfx_export.h" | 15 #include "ui/gfx/gfx_export.h" |
| 16 | 16 |
| 17 namespace gfx { | 17 namespace gfx { |
| 18 | 18 |
| 19 class UI_EXPORT Vector2dF { | 19 class GFX_EXPORT Vector2dF { |
| 20 public: | 20 public: |
| 21 Vector2dF() : x_(0), y_(0) {} | 21 Vector2dF() : x_(0), y_(0) {} |
| 22 Vector2dF(float x, float y) : x_(x), y_(y) {} | 22 Vector2dF(float x, float y) : x_(x), y_(y) {} |
| 23 | 23 |
| 24 float x() const { return x_; } | 24 float x() const { return x_; } |
| 25 void set_x(float x) { x_ = x; } | 25 void set_x(float x) { x_ = x; } |
| 26 | 26 |
| 27 float y() const { return y_; } | 27 float y() const { return y_; } |
| 28 void set_y(float y) { y_ = y; } | 28 void set_y(float y) { y_ = y; } |
| 29 | 29 |
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| 84 return result; | 84 return result; |
| 85 } | 85 } |
| 86 | 86 |
| 87 inline Vector2dF operator-(const Vector2dF& lhs, const Vector2dF& rhs) { | 87 inline Vector2dF operator-(const Vector2dF& lhs, const Vector2dF& rhs) { |
| 88 Vector2dF result = lhs; | 88 Vector2dF result = lhs; |
| 89 result.Add(-rhs); | 89 result.Add(-rhs); |
| 90 return result; | 90 return result; |
| 91 } | 91 } |
| 92 | 92 |
| 93 // Return the cross product of two vectors. | 93 // Return the cross product of two vectors. |
| 94 UI_EXPORT double CrossProduct(const Vector2dF& lhs, const Vector2dF& rhs); | 94 GFX_EXPORT double CrossProduct(const Vector2dF& lhs, const Vector2dF& rhs); |
| 95 | 95 |
| 96 // Return the dot product of two vectors. | 96 // Return the dot product of two vectors. |
| 97 UI_EXPORT double DotProduct(const Vector2dF& lhs, const Vector2dF& rhs); | 97 GFX_EXPORT double DotProduct(const Vector2dF& lhs, const Vector2dF& rhs); |
| 98 | 98 |
| 99 // Return a vector that is |v| scaled by the given scale factors along each | 99 // Return a vector that is |v| scaled by the given scale factors along each |
| 100 // axis. | 100 // axis. |
| 101 UI_EXPORT Vector2dF ScaleVector2d(const Vector2dF& v, | 101 GFX_EXPORT Vector2dF ScaleVector2d(const Vector2dF& v, |
| 102 float x_scale, | 102 float x_scale, |
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sky
2013/09/24 19:11:40
nit: moar indenting
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| 103 float y_scale); | 103 float y_scale); |
| 104 | 104 |
| 105 // Return a vector that is |v| scaled by the given scale factor. | 105 // Return a vector that is |v| scaled by the given scale factor. |
| 106 inline Vector2dF ScaleVector2d(const Vector2dF& v, float scale) { | 106 inline Vector2dF ScaleVector2d(const Vector2dF& v, float scale) { |
| 107 return ScaleVector2d(v, scale, scale); | 107 return ScaleVector2d(v, scale, scale); |
| 108 } | 108 } |
| 109 | 109 |
| 110 } // namespace gfx | 110 } // namespace gfx |
| 111 | 111 |
| 112 #endif // UI_GFX_VECTOR2D_F_H_ | 112 #endif // UI_GFX_VECTOR2D_F_H_ |
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