#define __DALI_MATRIX3_H__
/*
- * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
/**
* @brief A 3x3 matrix.
*
+ * The matrix is stored as a flat array and is Column Major, i.e. the storage order is as follows (numbers represent
+ * indices of array):
+ *
+ * @code
+ *
+ * 0 3 6
+ * 1 4 7
+ * 2 5 8
+ *
+ * @endcode
+ *
+ * Each axis is contiguous in memory, so the x-axis corresponds to elements 0, 1 and 2, the y-axis corresponds to
+ * elements 3, 4 and 5, and the z-axis corresponds to elements 6, 7 and 8.
+ *
* @SINCE_1_0.0
*/
-class DALI_IMPORT_API Matrix3
+class DALI_CORE_API Matrix3
{
public:
- friend std::ostream& operator<< (std::ostream& o, const Matrix3& matrix);
+ friend DALI_CORE_API std::ostream& operator<< (std::ostream& o, const Matrix3& matrix);
/**
- * @brief The identity matrix
+ * @brief The identity matrix.
*/
static const Matrix3 IDENTITY;
* @brief Constructor.
*
* @SINCE_1_0.0
- * @param[in] m A 4x4 matrix. The translation and shear components are ignored.
+ * @param[in] m A 4x4 matrix. The translation and shear components are ignored
*/
Matrix3(const Matrix& m);
Matrix3(float s00, float s01, float s02, float s10, float s11, float s12, float s20, float s21, float s22);
/**
- * @brief Assignment Operator
+ * @brief Assignment Operator.
* @SINCE_1_0.0
- * @param[in] matrix from which to copy values
- * @return reference to this object
+ * @param[in] matrix From which to copy values
+ * @return Reference to this object
*/
Matrix3& operator=( const Matrix3& matrix );
/**
- * @brief Assignment Operator
+ * @brief Assignment Operator.
* @SINCE_1_0.0
* @param[in] matrix A reference to the copied matrix
* @return A reference to this
/**
* @brief The equality operator.
*
- * Utilises appropriate machine epsilon values.
+ * Utilizes appropriate machine epsilon values.
*
* @SINCE_1_0.0
* @param[in] rhs The Matrix to compare this to
- * @return true if the matrices are equal
+ * @return True if the matrices are equal
*/
bool operator==(const Matrix3 & rhs) const;
/**
* @brief The inequality operator.
*
- * Utilises appropriate machine epsilon values.
+ * Utilizes appropriate machine epsilon values.
*
* @SINCE_1_0.0
* @param[in] rhs The Matrix to compare this to
* The order of the values for a matrix is:
*
* @code
- *
- * xAxis.x yAxis.x zAxis.x
- * xAxis.y yAxis.y zAxis.y
- * xAxis.z yAxis.z zAxis.z
- *
+ * [ xAxis.x, xAxis.y, xAxis.z, yAxis.x, yAxis.y, yAxis.z, zAxis.x, zAxis.y, zAxis.z ]
* @endcode
*
* @SINCE_1_0.0
- * @return the matrix contents as an array of 9 floats.
+ * @return The matrix contents as an array of 9 floats
*/
const float* AsFloat() const {return &mElements[0];}
/**
* @brief Returns the contents of the matrix as an array of 9 floats.
*
- * @code
- *
* The order of the values for a matrix is:
- * xAxis.x yAxis.x zAxis.x
- * xAxis.y yAxis.y zAxis.y
- * xAxis.z yAxis.z zAxis.z
*
+ * @code
+ * [ xAxis.x, xAxis.y, xAxis.z, yAxis.x, yAxis.y, yAxis.z, zAxis.x, zAxis.y, zAxis.z ]
* @endcode
*
* @SINCE_1_0.0
- * @return the matrix contents as an array of 9 floats.
+ * @return The matrix contents as an array of 9 floats
*/
float* AsFloat() {return &mElements[0];}
* @brief Inverts the matrix.
*
* @SINCE_1_0.0
- * @return true if successful
+ * @return True if successful
*/
bool Invert();
/**
- * @brief Swaps the rows to columns
+ * @brief Swaps the rows to columns.
* @SINCE_1_0.0
- * @return true if successful
+ * @return True if successful
*/
bool Transpose();
* @brief Multiplies all elements of the matrix by the scale value.
*
* @SINCE_1_0.0
- * @param[in] scale The value by which to scale the whole matrix.
- *
+ * @param[in] scale The value by which to scale the whole matrix
*/
void Scale(float scale);
*
* (The Magnitude of the unit matrix is therefore 1)
* @SINCE_1_0.0
- * @return the magnitude - always positive.
+ * @return The magnitude - always positive
*/
float Magnitude() const;
* If the matrix is not invertible, then the matrix is left unchanged.
*
* @SINCE_1_0.0
- * @return true if the matrix is invertible, otherwise false
+ * @return @c true if the matrix is invertible, otherwise @c false
*/
bool ScaledInverseTranspose();
* @brief Function to multiply two matrices and store the result onto third.
*
* Use this method in time critical path as it does not require temporaries
+ *
+ * result = rhs * lhs
+ *
* @SINCE_1_0.0
* @param[out] result Result of the multiplication
* @param[in] lhs Matrix, this can be same matrix as result
};
/**
- * @brief Print a 3x3 matrix.
+ * @brief Prints a 3x3 matrix.
*
* @SINCE_1_0.0
- * @param[in] o The output stream operator.
- * @param[in] matrix The matrix to print.
- * @return The output stream operator.
+ * @param[in] o The output stream operator
+ * @param[in] matrix The matrix to print
+ * @return The output stream operator
*/
-DALI_IMPORT_API std::ostream& operator<< (std::ostream& o, const Matrix3& matrix);
+DALI_CORE_API std::ostream& operator<< (std::ostream& o, const Matrix3& matrix);
// Allow Matrix3 to be treated as a POD type
template <> struct TypeTraits< Matrix3 > : public BasicTypes< Matrix3 > { enum { IS_TRIVIAL_TYPE = true }; };
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