ShaderRetroEffect类 参考

#include <ShaderTest.h>

类 ShaderRetroEffect 继承关系图:

ShaderRetroEffect 的协作图:

Public 成员函数
	CREATE_FUNC (ShaderRetroEffect)
	ShaderRetroEffect ()
virtual std::string	title () const override
virtual std::string	subtitle () const override
virtual bool	init () override
virtual void	update (float dt) override
Public 成员函数 继承自 TestCase
	TestCase ()
	~TestCase ()
virtual Type	getTestType () const
virtual float	getDuration () const
virtual std::string	getExpectedOutput () const
virtual std::string	getActualOutput () const
virtual void	restartTestCallback (cocos2d::Ref *sender)
virtual void	nextTestCallback (cocos2d::Ref *sender)
virtual void	priorTestCallback (cocos2d::Ref *sender)
virtual void	onBackCallback (cocos2d::Ref *sender)
void	setTestSuite (TestSuite *testSuite)
TestSuite *	getTestSuite () const
float	getRunTime () const
void	setTestCaseName (const std::string &name)
std::string	getTestCaseName () const
const cocos2d::Label *	getSubtitleLable () const
const cocos2d::MenuItemImage *	getRestartTestItem () const
virtual void	onEnter () override

Protected 属性
cocos2d::Label *	_label
float	_accum
Protected 属性 继承自 TestCase
cocos2d::MenuItemImage *	_priorTestItem
cocos2d::MenuItemImage *	_restartTestItem
cocos2d::MenuItemImage *	_nextTestItem
cocos2d::Label *	_titleLabel
cocos2d::Label *	_subtitleLabel

额外继承的成员函数
Public 类型 继承自 TestCase
enum class	Type { ROBUSTNESS , UNIT , GRAPHICAL_STATIC , MANUAL }
Public 属性 继承自 TestCase
CC_CONSTRUCTOR_ACCESS	__pad0__: virtual bool init() override

详细描述

在文件 ShaderTest.h 第 124 行定义.

构造及析构函数说明

ShaderRetroEffect()

ShaderRetroEffect::ShaderRetroEffect

(

)

在文件 ShaderTest.cpp 第 596 行定义.

: _label(nullptr)
, _accum(0.0f)
{
}

成员函数说明

CREATE_FUNC()

ShaderRetroEffect::CREATE_FUNC

(

ShaderRetroEffect

)

init()

bool ShaderRetroEffect::init ( )

overridevirtual

在文件 ShaderTest.cpp 第 602 行定义.

{
    if( ShaderTestDemo::init() ) {
        
        auto fragStr = FileUtils::getInstance()->getStringFromFile(FileUtils::getInstance()->fullPathForFilename("Shaders/example_HorizontalColor.fsh"));
        char * fragSource = (char*)fragStr.c_str();
 
        auto program = backend::Device::getInstance()->newProgram(positionTextureColor_vert, fragSource);
        auto p = new backend::ProgramState(program);
        auto director = Director::getInstance();
        const auto& screenSizeLocation = p->getUniformLocation("u_screenSize");
        const auto& frameSize = director->getOpenGLView()->getFrameSize();
        float retinaFactor = director->getOpenGLView()->getRetinaFactor();
        auto screenSizeInPixels = frameSize * retinaFactor;
        p->setUniform(screenSizeLocation, &screenSizeInPixels, sizeof(screenSizeInPixels));
        
        auto s = director->getWinSize();
 
        _label = Label::createWithBMFont("fonts/west_england-64.fnt","RETRO EFFECT");
        _label->setAnchorPoint(Vec2::ANCHOR_MIDDLE);
        _label->setProgramState(p);
        CC_SAFE_RELEASE(p);
 
        _label->setPosition(Vec2(s.width/2,s.height/2));
 
        addChild(_label);
 
        scheduleUpdate();
        CC_SAFE_RELEASE(program);
        return true;
    }
 
    return false;
}

引用了 _label.

subtitle()

std::string ShaderRetroEffect::subtitle ( ) const

overridevirtual

重载 TestCase .

在文件 ShaderTest.cpp 第 662 行定义.

{
    return "sin() effect with moving colors";
}

title()

std::string ShaderRetroEffect::title ( ) const

overridevirtual

重载 TestCase .

在文件 ShaderTest.cpp 第 657 行定义.

{
    return "Shader: Retro test";
}

update()

void ShaderRetroEffect::update ( float  dt )

overridevirtual

在文件 ShaderTest.cpp 第 637 行定义.

{
    _accum += dt;
    int letterCount = _label->getStringLength();
    for (int i = 0; i < letterCount; ++i)
    {
        auto sprite = _label->getLetter(i);
        if (sprite != nullptr)
        {
            auto oldPosition = sprite->getPosition();
            sprite->setPosition(Vec2( oldPosition.x, sinf( _accum * 2 + i/2.0) * 20  ));
            
            // add fabs() to prevent negative scaling
            float scaleY = ( sinf( _accum * 2 + i/2.0 + 0.707) );
            
            sprite->setScaleY(scaleY);
        }
    }
}

引用了 _accum , 以及 _label.

类成员变量说明

_accum

float ShaderRetroEffect::_accum

protected

在文件 ShaderTest.h 第 135 行定义.

被这些函数引用 update().

_label

cocos2d::Label* ShaderRetroEffect::_label

protected

在文件 ShaderTest.h 第 134 行定义.

被这些函数引用 init() , 以及 update().

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该类的文档由以下文件生成:

• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/ShaderTest/ShaderTest.h
• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/ShaderTest/ShaderTest.cpp