1 #ifndef DALI_INTERNAL_MATH_H
2 #define DALI_INTERNAL_MATH_H
5 * Copyright (c) 2017 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.
30 typedef float Vec3[3];
31 typedef float Vec4[4];
32 typedef float Mat4[16];
35 * @brief Applies a transformation matrix to a Vector3
37 * @param[out] result The transformed vector
38 * @param[in] m The transformation matrix
39 * @param[in] v The vector to transform
41 void TransformVector3( Vec3 result, const Mat4 m, const Vec3 v );
44 * @brief Applies a transformation matrix to a Vector2
45 * Note: This performs an optimized 2D transformation.
47 * @param[in] matrix The matrix to transform by
48 * @param[in] x The x coordinate to multiply the matrix by
49 * @param[in] y The y coordinate to multiply the matrix by
50 * @return A Vector2 containing the resulting coordinates
52 Vector2 Transform2D( const Matrix& matrix, const float x, const float y );
55 * @brief Computes the length of a vector3
57 * @param[in] v The vector
58 * @return The lenght of the vector
60 float Length( const Vec3 v );
62 } // namespace Internal
66 #endif // DALI_INTERNAL_MATH_H