text: /****************************************************************************
  Copyright (c) 2008-2010 Ricardo Quesada
  Copyright (c) 2010-2012 cocos2d-x.org
  Copyright (c) 2011      Zynga Inc.
  Copyright (c) 2013-2016 Chukong Technologies Inc.
  Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
   
   http://www.cocos2d-x.org
   
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:
   
   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.
   
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
   ****************************************************************************/
  
  #include "base/ccTypes.h"
  
  NS_CC_BEGIN
  
  const std::string STD_STRING_EMPTY("");
  const ssize_t CC_INVALID_INDEX = -1;
  
  /**
   * Color3B
   */
  
  Color3B::Color3B()
  : r(0)
  , g(0)
  , b(0)
  {}
  
  Color3B::Color3B(GLubyte _r, GLubyte _g, GLubyte _b)
  : r(_r)
  , g(_g)
  , b(_b)
  {}
  
  Color3B::Color3B(const Color4B& color)
  : r(color.r)
  , g(color.g)
  , b(color.b)
  {}
  
  Color3B::Color3B(const Color4F& color)
  : r(color.r * 255.0f)
  , g(color.g * 255.0f)
  , b(color.b * 255.0f)
  {}
  
  bool Color3B::operator==(const Color3B& right) const
  {
      return (r == right.r && g == right.g && b == right.b);
  }
  
  bool Color3B::operator==(const Color4B& right) const
  {
      return (r == right.r && g == right.g && b == right.b && 255 == right.a);
  }
  
  bool Color3B::operator==(const Color4F& right) const
  {
      return (right.a == 1.0f && Color4F(*this) == right);
  }
  
  bool Color3B::operator!=(const Color3B& right) const
  {
      return !(*this == right);
  }
  
  bool Color3B::operator!=(const Color4B& right) const
  {
      return !(*this == right);
  }
  
  bool Color3B::operator!=(const Color4F& right) const
  {
      return !(*this == right);
  }
  
  /**
   * Color4B
   */
  
  Color4B::Color4B()
  : r(0)
  , g(0)
  , b(0)
  , a(0)
  {}
  
  Color4B::Color4B(GLubyte _r, GLubyte _g, GLubyte _b, GLubyte _a)
  : r(_r)
  , g(_g)
  , b(_b)
  , a(_a)
  {}
  
  Color4B::Color4B(const Color3B& color, GLubyte _a)
  : r(color.r)
  , g(color.g)
  , b(color.b)
  , a(_a)
  {}
  
  Color4B::Color4B(const Color4F& color)
  : r(color.r * 255)
  , g(color.g * 255)
  , b(color.b * 255)
  , a(color.a * 255)
  {}
  
  bool Color4B::operator==(const Color4B& right) const
  {
      return (r == right.r && g == right.g && b == right.b && a == right.a);
  }
  
  bool Color4B::operator==(const Color3B& right) const
  {
      return (r == right.r && g == right.g && b == right.b && a == 255);
  }
  
  bool Color4B::operator==(const Color4F& right) const
  {
      return (*this == Color4B(right));
  }
  
  bool Color4B::operator!=(const Color4B& right) const
  {
      return !(*this == right);
  }
  
  bool Color4B::operator!=(const Color3B& right) const
  {
      return !(*this == right);
  }
  
  bool Color4B::operator!=(const Color4F& right) const
  {
      return !(*this == right);
  }
  
  /**
   * Color4F
   */
  
  Color4F::Color4F()
  : r(0.0f)
  , g(0.0f)
  , b(0.0f)
  , a(0.0f)
  {}
  
  Color4F::Color4F(float _r, float _g, float _b, float _a)
  : r(_r)
  , g(_g)
  , b(_b)
  , a(_a)
  {}
  
  Color4F::Color4F(const Color3B& color, float _a)
  : r(color.r / 255.0f)
  , g(color.g / 255.0f)
  , b(color.b / 255.0f)
  , a(_a)
  {}
  
  Color4F::Color4F(const Color4B& color)
  : r(color.r / 255.0f)
  , g(color.g / 255.0f)
  , b(color.b / 255.0f)
  , a(color.a / 255.0f)
  {}
  
  bool Color4F::operator==(const Color4F& right) const
  {
      return (r == right.r && g == right.g && b == right.b && a == right.a);
  }
  
  bool Color4F::operator==(const Color3B& right) const
  {
      return (a == 1.0f && Color3B(*this) == right);
  }
  
  bool Color4F::operator==(const Color4B& right) const
  {
      return (*this == Color4F(right));
  }
  
  bool Color4F::operator!=(const Color4F& right) const
  {
      return !(*this == right);
  }
  
  bool Color4F::operator!=(const Color3B& right) const
  {
      return !(*this == right);
  }
  
  bool Color4F::operator!=(const Color4B& right) const
  {
      return !(*this == right);
  }
  
  Color4F& operator+=(Color4F& lhs, const Color4F& rhs) {
  	lhs.r += rhs.r;
  	lhs.g += rhs.g;
  	lhs.b += rhs.b;
  	lhs.a += rhs.a;
  	return lhs;
  }
  Color4F operator+(Color4F lhs, const Color4F& rhs) {
  	return lhs += rhs;
  }
  Color4F& operator-=(Color4F& lhs, const Color4F& rhs) {
  	lhs.r -= rhs.r;
  	lhs.g -= rhs.g;
  	lhs.b -= rhs.b;
  	lhs.a -= rhs.a;
  	return lhs;
  }
  Color4F operator-(Color4F lhs, const Color4F& rhs) {
  	return lhs -= rhs;
  }
  
  Color4F& operator*=(Color4F& lhs, const Color4F& rhs) {
  	lhs.r *= rhs.r;
  	lhs.g *= rhs.g;
  	lhs.b *= rhs.b;
  	lhs.a *= rhs.a;
  	return lhs;
  }
  Color4F& operator*=(Color4F& lhs, float rhs) {
  	lhs.r *= rhs;
  	lhs.g *= rhs;
  	lhs.b *= rhs;
  	lhs.a *= rhs;
  	return lhs;
  }
  Color4F operator*(Color4F lhs, const Color4F& rhs) {
      return lhs *= rhs;
  }
  
  Color4F operator*(Color4F lhs, float rhs) {
      return lhs *= rhs;
  }
  
  Color4F& operator/=(Color4F& lhs, const Color4F& rhs) {
  	lhs.r /= rhs.r;
  	lhs.g /= rhs.g;
  	lhs.b /= rhs.b;
  	lhs.a /= rhs.a;
  	return lhs;
  }
  Color4F& operator/=(Color4F& lhs, float rhs) {
  	lhs.r /= rhs;
  	lhs.g /= rhs;
  	lhs.b /= rhs;
  	lhs.a /= rhs;
  	return lhs;
  }
  Color4F operator/(Color4F lhs, const Color4F& rhs) {
      return lhs /= rhs;
  }
  
  Color4F operator/(Color4F lhs, float rhs) {
      return lhs /= rhs;
  }
  
  /**
   * Color constants
   */
  
  const Color3B Color3B::WHITE  (255, 255, 255);
  const Color3B Color3B::YELLOW (255, 255,   0);
  const Color3B Color3B::GREEN  (  37, 198,   0);
  const Color3B Color3B::BLUE   (  0,   0, 255);
  const Color3B Color3B::RED    (255,   0,   0);
  const Color3B Color3B::MAGENTA(255,   0, 255);
  const Color3B Color3B::BLACK  (  0,   0,   0);
  const Color3B Color3B::ORANGE (255, 127,   0);
  const Color3B Color3B::GRAY   (166, 166, 166);
  
  const Color4B Color4B::WHITE  (255, 255, 255, 255);
  const Color4B Color4B::YELLOW (255, 255,   0, 255);
  const Color4B Color4B::GREEN  (  0, 255,   0, 255);
  const Color4B Color4B::BLUE   (  0,   0, 255, 255);
  const Color4B Color4B::RED    (255,   0,   0, 255);
  const Color4B Color4B::MAGENTA(255,   0, 255, 255);
  const Color4B Color4B::BLACK  (  0,   0,   0, 255);
  const Color4B Color4B::ORANGE (255, 127,   0, 255);
  const Color4B Color4B::GRAY   (166, 166, 166, 255);
  
  const Color4F Color4F::WHITE  (    1,     1,     1, 1);
  const Color4F Color4F::YELLOW (    1,     1,     0, 1);
  const Color4F Color4F::GREEN  (    0,     1,     0, 1);
  const Color4F Color4F::BLUE   (    0,     0,     1, 1);
  const Color4F Color4F::RED    (    1,     0,     0, 1);
  const Color4F Color4F::MAGENTA(    1,     0,     1, 1);
  const Color4F Color4F::BLACK  (    0,     0,     0, 1);
  const Color4F Color4F::ORANGE (    1,  0.5f,     0, 1);
  const Color4F Color4F::GRAY   (0.65f, 0.65f, 0.65f, 1);
  
  const BlendFunc BlendFunc::DISABLE = {GL_ONE, GL_ZERO};
  const BlendFunc BlendFunc::ALPHA_PREMULTIPLIED = {GL_ONE, GL_ONE_MINUS_SRC_ALPHA};
  const BlendFunc BlendFunc::ALPHA_NON_PREMULTIPLIED = {GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA};
  const BlendFunc BlendFunc::ADDITIVE = {GL_SRC_ALPHA, GL_ONE};
  
  NS_CC_END
  