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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef UI_GFX_BOX_F_H_ | 5 // TODO(beng): remove once callsites are patched. |
| 6 #define UI_GFX_BOX_F_H_ | 6 #include "ui/gfx/geometry/box_f.h" |
| 7 | 7 |
| 8 #include "ui/gfx/point3_f.h" | |
| 9 #include "ui/gfx/vector3d_f.h" | |
| 10 | |
| 11 namespace gfx { | |
| 12 | |
| 13 // A 3d version of gfx::RectF, with the positive z-axis pointed towards | |
| 14 // the camera. | |
| 15 class GFX_EXPORT BoxF { | |
| 16 public: | |
| 17 BoxF() | |
| 18 : width_(0.f), | |
| 19 height_(0.f), | |
| 20 depth_(0.f) {} | |
| 21 | |
| 22 BoxF(float width, float height, float depth) | |
| 23 : width_(width < 0 ? 0 : width), | |
| 24 height_(height < 0 ? 0 : height), | |
| 25 depth_(depth < 0 ? 0 : depth) {} | |
| 26 | |
| 27 BoxF(float x, float y, float z, float width, float height, float depth) | |
| 28 : origin_(x, y, z), | |
| 29 width_(width < 0 ? 0 : width), | |
| 30 height_(height < 0 ? 0 : height), | |
| 31 depth_(depth < 0 ? 0 : depth) {} | |
| 32 | |
| 33 BoxF(const Point3F& origin, float width, float height, float depth) | |
| 34 : origin_(origin), | |
| 35 width_(width < 0 ? 0 : width), | |
| 36 height_(height < 0 ? 0 : height), | |
| 37 depth_(depth < 0 ? 0 : depth) {} | |
| 38 | |
| 39 ~BoxF() {} | |
| 40 | |
| 41 // Scales all three axes by the given scale. | |
| 42 void Scale(float scale) { | |
| 43 Scale(scale, scale, scale); | |
| 44 } | |
| 45 | |
| 46 // Scales each axis by the corresponding given scale. | |
| 47 void Scale(float x_scale, float y_scale, float z_scale) { | |
| 48 origin_.Scale(x_scale, y_scale, z_scale); | |
| 49 set_size(width_ * x_scale, height_ * y_scale, depth_ * z_scale); | |
| 50 } | |
| 51 | |
| 52 // Moves the box by the specified distance in each dimension. | |
| 53 void operator+=(const Vector3dF& offset) { | |
| 54 origin_ += offset; | |
| 55 } | |
| 56 | |
| 57 // Returns true if the box has no interior points. | |
| 58 bool IsEmpty() const; | |
| 59 | |
| 60 // Computes the union of this box with the given box. The union is the | |
| 61 // smallest box that contains both boxes. | |
| 62 void Union(const BoxF& box); | |
| 63 | |
| 64 std::string ToString() const; | |
| 65 | |
| 66 float x() const { return origin_.x(); } | |
| 67 void set_x(float x) { origin_.set_x(x); } | |
| 68 | |
| 69 float y() const { return origin_.y(); } | |
| 70 void set_y(float y) { origin_.set_y(y); } | |
| 71 | |
| 72 float z() const { return origin_.z(); } | |
| 73 void set_z(float z) { origin_.set_z(z); } | |
| 74 | |
| 75 float width() const { return width_; } | |
| 76 void set_width(float width) { width_ = width < 0 ? 0 : width; } | |
| 77 | |
| 78 float height() const { return height_; } | |
| 79 void set_height(float height) { height_ = height < 0 ? 0 : height; } | |
| 80 | |
| 81 float depth() const { return depth_; } | |
| 82 void set_depth(float depth) { depth_ = depth < 0 ? 0 : depth; } | |
| 83 | |
| 84 float right() const { return x() + width(); } | |
| 85 float bottom() const { return y() + height(); } | |
| 86 float front() const { return z() + depth(); } | |
| 87 | |
| 88 void set_size(float width, float height, float depth) { | |
| 89 width_ = width < 0 ? 0 : width; | |
| 90 height_ = height < 0 ? 0 : height; | |
| 91 depth_ = depth < 0 ? 0 : depth; | |
| 92 } | |
| 93 | |
| 94 const Point3F& origin() const { return origin_; } | |
| 95 void set_origin(const Point3F& origin) { origin_ = origin; } | |
| 96 | |
| 97 // Expands |this| to contain the given point, if necessary. Please note, even | |
| 98 // if |this| is empty, after the function |this| will continue to contain its | |
| 99 // |origin_|. | |
| 100 void ExpandTo(const Point3F& point); | |
| 101 | |
| 102 // Expands |this| to contain the given box, if necessary. Please note, even | |
| 103 // if |this| is empty, after the function |this| will continue to contain its | |
| 104 // |origin_|. | |
| 105 void ExpandTo(const BoxF& box); | |
| 106 | |
| 107 private: | |
| 108 // Expands the box to contain the two given points. It is required that each | |
| 109 // component of |min| is less than or equal to the corresponding component in | |
| 110 // |max|. Precisely, what this function does is ensure that after the function | |
| 111 // completes, |this| contains origin_, min, max, and origin_ + (width_, | |
| 112 // height_, depth_), even if the box is empty. Emptiness checks are handled in | |
| 113 // the public function Union. | |
| 114 void ExpandTo(const Point3F& min, const Point3F& max); | |
| 115 | |
| 116 Point3F origin_; | |
| 117 float width_; | |
| 118 float height_; | |
| 119 float depth_; | |
| 120 }; | |
| 121 | |
| 122 GFX_EXPORT BoxF UnionBoxes(const BoxF& a, const BoxF& b); | |
| 123 | |
| 124 inline BoxF ScaleBox(const BoxF& b, | |
| 125 float x_scale, | |
| 126 float y_scale, | |
| 127 float z_scale) { | |
| 128 return BoxF(b.x() * x_scale, | |
| 129 b.y() * y_scale, | |
| 130 b.z() * z_scale, | |
| 131 b.width() * x_scale, | |
| 132 b.height() * y_scale, | |
| 133 b.depth() * z_scale); | |
| 134 } | |
| 135 | |
| 136 inline BoxF ScaleBox(const BoxF& b, float scale) { | |
| 137 return ScaleBox(b, scale, scale, scale); | |
| 138 } | |
| 139 | |
| 140 inline bool operator==(const BoxF& a, const BoxF& b) { | |
| 141 return a.origin() == b.origin() && a.width() == b.width() && | |
| 142 a.height() == b.height() && a.depth() == b.depth(); | |
| 143 } | |
| 144 | |
| 145 inline bool operator!=(const BoxF& a, const BoxF& b) { | |
| 146 return !(a == b); | |
| 147 } | |
| 148 | |
| 149 inline BoxF operator+(const BoxF& b, const Vector3dF& v) { | |
| 150 return BoxF(b.x() + v.x(), | |
| 151 b.y() + v.y(), | |
| 152 b.z() + v.z(), | |
| 153 b.width(), | |
| 154 b.height(), | |
| 155 b.depth()); | |
| 156 } | |
| 157 | |
| 158 } // namespace gfx | |
| 159 | |
| 160 #endif // UI_GFX_BOX_F_H_ | |
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