1 #ifndef __DALI_CONSTANTS_H__
2 #define __DALI_CONSTANTS_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <math.h> // M_PI
25 #include <dali/public-api/math/vector3.h>
26 #include <dali/public-api/math/vector4.h>
27 #include <dali/public-api/math/radian.h>
33 * @brief ParentOrigin constants
35 * Note that for 2D layouting, the typical Z position is 0.5f (not 0.0f)
37 namespace ParentOrigin
39 extern const Vector3 DEFAULT; ///< TOP_LEFT
40 static const float TOP = 0.0f;
41 static const float BOTTOM = 1.0f;
42 static const float LEFT = 0.0f;
43 static const float RIGHT = 1.0f;
44 static const float MIDDLE = 0.5f;
46 DALI_IMPORT_API extern const Vector3 TOP_LEFT; ///< 0.0f, 0.0f, 0.5f
47 DALI_IMPORT_API extern const Vector3 TOP_CENTER; ///< 0.5f, 0.0f, 0.5f
48 DALI_IMPORT_API extern const Vector3 TOP_RIGHT; ///< 1.0f, 0.0f, 0.5f
49 DALI_IMPORT_API extern const Vector3 CENTER_LEFT; ///< 0.0f, 0.5f, 0.5f
50 DALI_IMPORT_API extern const Vector3 CENTER; ///< 0.5f, 0.5f, 0.5f
51 DALI_IMPORT_API extern const Vector3 CENTER_RIGHT; ///< 1.0f, 0.5f, 0.5f
52 DALI_IMPORT_API extern const Vector3 BOTTOM_LEFT; ///< 0.0f, 1.0f, 0.5f
53 DALI_IMPORT_API extern const Vector3 BOTTOM_CENTER; ///< 0.5f, 1.0f, 0.5f
54 DALI_IMPORT_API extern const Vector3 BOTTOM_RIGHT; ///< 1.0f, 1.0f, 0.5f
59 * @brief AnchorPoint constants
61 * Note that for 2D layouting, the typical Z position is 0.5f (not 0.0f)
65 static const float TOP = 0.0f;
66 static const float BOTTOM = 1.0f;
67 static const float LEFT = 0.0f;
68 static const float RIGHT = 1.0f;
69 static const float MIDDLE = 0.5f;
71 extern const Vector3 DEFAULT; ///< CENTER
72 DALI_IMPORT_API extern const Vector3 TOP_LEFT; ///< 0.0f, 0.0f, 0.5f
73 DALI_IMPORT_API extern const Vector3 TOP_CENTER; ///< 0.5f, 0.0f, 0.5f
74 DALI_IMPORT_API extern const Vector3 TOP_RIGHT; ///< 1.0f, 0.0f, 0.5f
75 DALI_IMPORT_API extern const Vector3 CENTER_LEFT; ///< 0.0f, 0.5f, 0.5f
76 DALI_IMPORT_API extern const Vector3 CENTER; ///< 0.5f, 0.5f, 0.5f
77 DALI_IMPORT_API extern const Vector3 CENTER_RIGHT; ///< 1.0f, 0.5f, 0.5f
78 DALI_IMPORT_API extern const Vector3 BOTTOM_LEFT; ///< 0.0f, 1.0f, 0.5f
79 DALI_IMPORT_API extern const Vector3 BOTTOM_CENTER; ///< 0.5f, 1.0f, 0.5f
80 DALI_IMPORT_API extern const Vector3 BOTTOM_RIGHT; ///< 1.0f, 1.0f, 0.5f
86 * @brief Color Constants.
88 * Color is represented by the Vector4 class (see vector4.h).
92 DALI_IMPORT_API extern const Vector4 BLACK; ///< Pure black (0.0f, 0.0f, 0.0f, 1.0f);
93 DALI_IMPORT_API extern const Vector4 WHITE; ///< Pure white (1.0f, 1.0f, 1.0f, 1.0f);
95 DALI_IMPORT_API extern const Vector4 RED; ///< Pure red (1.0f, 0.0f, 0.0f, 1.0f);
96 DALI_IMPORT_API extern const Vector4 GREEN; ///< Pure green (0.0f, 1.0f, 0.0f, 1.0f);
97 DALI_IMPORT_API extern const Vector4 BLUE; ///< Pure blue (0.0f, 0.0f, 1.0f, 1.0f);
99 DALI_IMPORT_API extern const Vector4 YELLOW; ///< Pure yellow (1.0f, 1.0f, 0.0f, 1.0f);
100 DALI_IMPORT_API extern const Vector4 MAGENTA; ///< Pure magenta (1.0f, 0.0f, 1.0f, 1.0f);
101 DALI_IMPORT_API extern const Vector4 CYAN; ///< Pure cyan (0.0f, 1.0f, 1.0f, 1.0f);
103 DALI_IMPORT_API extern const Vector4 TRANSPARENT; ///< Black transparent (0.0f, 0.0f, 0.0f, 0.0f);
108 * @brief Math constants
112 DALI_IMPORT_API extern const float MACHINE_EPSILON_0; ///< Epsilon for values near zero
113 DALI_IMPORT_API extern const float MACHINE_EPSILON_1; ///< Epsilon for values near 1
114 DALI_IMPORT_API extern const float MACHINE_EPSILON_10; ///< Epsilon for values near 10
115 DALI_IMPORT_API extern const float MACHINE_EPSILON_100; ///< Epsilon for values near 100
116 DALI_IMPORT_API extern const float MACHINE_EPSILON_1000; ///< Epsilon for values near 1000
117 DALI_IMPORT_API extern const float MACHINE_EPSILON_10000; ///< Epsilon for values near 10000
119 // float is preferred to double for performance on ARM targets
120 static const float PI = static_cast<float>(M_PI); ///< Constant representing PI
121 static const float PI_2 = static_cast<float>(M_PI_2); ///< Constant representing PI/2
122 static const float PI_4 = static_cast<float>(M_PI_4); ///< Constant representing PI/4
127 * @brief String Constants
131 extern const std::string EMPTY; ///< The empty string
136 #endif // __DALI_CONSTANTS_H__