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Added color arithmetics

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Robert 2020-05-17 15:11:53 +02:00
parent c1a6cccab8
commit 5b84b15ed2
2 changed files with 175 additions and 0 deletions
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82
SDLU/structures/Color.cpp
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@ -93,4 +93,86 @@ namespace sdlu
return output;
}
Color operator+(const Color& left, const Color& right)
{
return Color(left.r + right.r,
left.g + right.g,
left.b + right.b,
left.a + right.a);
}
Color operator-(const Color& left, const Color& right)
{
return Color(left.r - right.r,
left.g - right.g,
left.b - right.b,
left.a - right.a);
}
Color operator*(const Color& left, const Color& right)
{
return Color(left.r * right.r,
left.g * right.g,
left.b * right.b,
left.a * right.a);
}
Color operator/(const Color& left, const Color& right)
{
return Color(left.r / right.r,
left.g / right.g,
left.b / right.b,
left.a / right.a);
}
Color& operator+=(Color& left, const Color& right)
{
left.r += right.r;
left.g += right.g;
left.b += right.b;
left.a += right.a;
return left;
}
Color& operator-=(Color& left, const Color& right)
{
left.r -= right.r;
left.g -= right.g;
left.b -= right.b;
left.a -= right.a;
return left;
}
Color& operator*=(Color& left, const Color& right)
{
left.r *= right.r;
left.g *= right.g;
left.b *= right.b;
left.a *= right.a;
return left;
}
Color& operator/=(Color& left, const Color& right)
{
left.r /= right.r;
left.g /= right.g;
left.b /= right.b;
left.a /= right.a;
return left;
}
bool operator==(const Color& left, const Color& right)
{
return ((left.r == right.r) && (left.g == right.g) && (left.b == right.b) && (left.a == right.a));
}
bool operator!=(const Color& left, const Color& right)
{
return !(left == right);
}
}

93
SDLU/structures/Color.hpp
View file

@ -73,5 +73,98 @@ namespace sdlu
static const Color White; ///< Default Color White (#FFFFFFFF)
static const Color Transparent; ///< Default Color Transparent (#00000000)
/////////////////// OPERATOR OVERLOADS ///////////////////
/**
* @brief Componentwise color addition
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left + right
*/
friend Color operator+(const Color& left, const Color& right);
/**
* @brief Componentwise color subtraction
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left - right
*/
friend Color operator-(const Color& left, const Color& right);
/**
* @brief Componentwise color multiplication
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left * right
*/
friend Color operator*(const Color& left, const Color& right);
/**
* @brief Componentwise color division
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left / right
*/
friend Color operator/(const Color& left, const Color& right);
/**
* @brief Componentwise color addition
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left += right
*/
friend Color& operator+=(Color& left, const Color& right);
/**
* @brief Componentwise color subtraction
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left -= right
*/
friend Color& operator-=(Color& left, const Color& right);
/**
* @brief Componentwise color multiplication
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left *= right
*/
friend Color& operator*=(Color& left, const Color& right);
/**
* @brief Componentwise color division
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return left /= right
*/
friend Color& operator/=(Color& left, const Color& right);
/**
* @brief Componentwise color comparison
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return True if the respective color components are equal, False if not
*/
friend bool operator==(const Color& left, const Color& right);
/**
* @brief Componentwise color comparison
*
* @param[in] left Left operand
* @param[in] right Right operand
* @return False if the respective color components are equal, True if not
*/
friend bool operator!=(const Color& left, const Color& right);
};
}