#include <Camera3DTest.h>

类 CameraArcBallDemo 继承关系图:

CameraArcBallDemo 的协作图:

Public 成员函数
	CREATE_FUNC (CameraArcBallDemo)

	CameraArcBallDemo ()

virtual	~CameraArcBallDemo ()

virtual void	onEnter () override

virtual void	onExit () override

virtual void	update (float dt) override

virtual std::string	title () const override

void	switchOperateCallback (cocos2d::Ref *sender)

void	switchTargetCallback (cocos2d::Ref *sender)

void	onTouchsMoved (const std::vector< cocos2d::Touch * > &touchs, cocos2d::Event *event)

void	updateCameraTransform ()

void	calculateArcBall (cocos2d::Vec3 &axis, float &angle, float p1x, float p1y, float p2x, float p2y)

float	projectToSphere (float r, float x, float y)

Public 成员函数继承自 TestCase
	TestCase ()

	~TestCase ()

virtual std::string	subtitle () const

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

Protected 属性
cocos2d::Layer *	_layer3D

CameraType	_cameraType

cocos2d::Camera *	_camera

cocos2d::DrawNode3D *	_drawGrid

cocos2d::Quaternion	_rotationQuat

float	_radius

float	_distanceZ

OperateCamType	_operate

cocos2d::Vec3	_center

int	_target

cocos2d::Sprite3D *	_sprite3D1

cocos2d::Sprite3D *	_sprite3D2

Protected 属性继承自 CameraBaseTest
cocos2d::BillBoard *	bill1

cocos2d::BillBoard *	bill2

cocos2d::Label *	l1

cocos2d::Label *	l2

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 Camera3DTest.h 第 192 行定义.

构造及析构函数说明

◆ CameraArcBallDemo()

CameraArcBallDemo::CameraArcBallDemo ( )

在文件 Camera3DTest.cpp 第 988 行定义.

: CameraBaseTest()
, _layer3D(nullptr)
, _cameraType(CameraType::Free)
, _camera(nullptr)
, _drawGrid(nullptr)
, _radius(1.0f)
, _distanceZ(50.0f)
, _operate(OperateCamType::RotateCamera)
, _center(Vec3(0,0,0))
, _target(0)
, _sprite3D1(nullptr)
, _sprite3D2(nullptr)
{
}

引用了 Free , 以及 RotateCamera.

◆ ~CameraArcBallDemo()

CameraArcBallDemo::~CameraArcBallDemo ( )

virtual

在文件 Camera3DTest.cpp 第 1003 行定义.

1004{

1005}

成员函数说明

◆ calculateArcBall()

void CameraArcBallDemo::calculateArcBall	(	cocos2d::Vec3 &	axis,
		float &	angle,
		float	p1x,
		float	p1y,
		float	p2x,
		float	p2y
	)

在文件 Camera3DTest.cpp 第 1125 行定义.

{
    Mat4 rotation_matrix;
    Mat4::createRotation(_rotationQuat, &rotation_matrix);
 
    Vec3 uv = rotation_matrix * Vec3(0.0f,1.0f,0.0f); //rotation y
    Vec3 sv = rotation_matrix * Vec3(1.0f,0.0f,0.0f); //rotation x
    Vec3 lv = rotation_matrix * Vec3(0.0f,0.0f,-1.0f);//rotation z
 
    Vec3 p1 = sv * p1x + uv * p1y - lv * projectToSphere(_radius, p1x, p1y); //start point screen transform to 3d
    Vec3 p2 = sv * p2x + uv * p2y - lv * projectToSphere(_radius, p2x, p2y); //end point screen transform to 3d
 
    Vec3::cross(p2, p1, &axis);  //calculate rotation axis
    axis.normalize();
 
    float t = (p2 - p1).length() / (2.0f * _radius);
    //clamp -1 to 1
    if (t > 1.0) t = 1.0;
    if (t < -1.0) t = -1.0;
    angle = asin(t);           //rotation angle
}

引用了 _radius, _rotationQuat , 以及 projectToSphere().

被这些函数引用 onTouchsMoved().

函数调用图:

这是这个函数的调用关系图:

◆ CREATE_FUNC()

CameraArcBallDemo::CREATE_FUNC ( CameraArcBallDemo )

◆ onEnter()

void CameraArcBallDemo::onEnter ( )

overridevirtual

重载 TestCase .

在文件 Camera3DTest.cpp 第 1012 行定义.

{
    CameraBaseTest::onEnter();
    _rotationQuat.set(0.0f, 0.0f, 0.0f, 1.0f);
    schedule(CC_SCHEDULE_SELECTOR(CameraArcBallDemo::update), 0.0f);
    auto s = Director::getInstance()->getWinSize();
    auto listener = EventListenerTouchAllAtOnce::create();
    listener->onTouchesMoved = CC_CALLBACK_2(CameraArcBallDemo::onTouchsMoved, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
 
    // switch camera
    MenuItemFont::setFontName("fonts/arial.ttf");
    MenuItemFont::setFontSize(20);
    
    auto menuItem1 = MenuItemFont::create("Switch Operation", CC_CALLBACK_1(CameraArcBallDemo::switchOperateCallback,this));
    menuItem1->setColor(Color3B(0,200,20));
    auto menuItem2 = MenuItemFont::create("Switch Target", CC_CALLBACK_1(CameraArcBallDemo::switchTargetCallback,this));
    menuItem2->setColor(Color3B(0,200,20));
    auto menu = Menu::create(menuItem1,menuItem2,NULL);
    menu->setPosition(Vec2::ZERO);
    menuItem1->setPosition(VisibleRect::left().x + 80, VisibleRect::top().y -70);
    menuItem2->setPosition(VisibleRect::left().x + 80, VisibleRect::top().y -100);
    addChild(menu, 1);
 
    auto layer3D=Layer::create();
    addChild(layer3D,0);
    _layer3D=layer3D;
 
    if (_camera == nullptr)
    {
        _camera=Camera::createPerspective(60, (float)s.width/s.height, 1, 1000);
        _camera->setCameraFlag(CameraFlag::USER1);
        _camera->setPosition3D(Vec3(0.0f, 10.0f, 50.0f));
        _camera->lookAt(Vec3(0, 0, 0), Vec3(0.0f, 1.0f, 0.0f));
        _camera->retain();
        _layer3D->addChild(_camera);
    }
 
    _sprite3D1 = Sprite3D::create("Sprite3DTest/orc.c3b");
    _sprite3D1->setScale(0.5);
    _sprite3D1->setRotation3D(Vec3(0.0f,180.0f,0.0f));
    _sprite3D1->setPosition3D(Vec3(0,0,0));
    _layer3D->addChild(_sprite3D1);
 
    _sprite3D2 = Sprite3D::create("Sprite3DTest/boss.c3b");
    _sprite3D2->setScale(0.6f);
    _sprite3D2->setRotation3D(Vec3(-90.0f,0.0f,0.0f));
    _sprite3D2->setPosition3D(Vec3(20.0f,0.0f,0.0f));
    _layer3D->addChild(_sprite3D2);
 
    _drawGrid =DrawNode3D::create();
 
    //draw x
    for( int j =-20; j<=20 ;j++)
    {
        _drawGrid->drawLine(Vec3(-100.0f, 0, 5.0f*j),Vec3(100.0f,0,5.0f*j),Color4F(1,0,0,1));
    }
    //draw z
    for( int j =-20; j<=20 ;j++)
    {
        _drawGrid->drawLine(Vec3(5.0f*j, 0, -100.0f),Vec3(5.0f*j,0,100.0f),Color4F(0,0,1,1));
    }
    //draw y
    _drawGrid->drawLine(Vec3(0, 0, 0),Vec3(0,50.0f,0),Color4F(0,1,0,1));
    _layer3D->addChild(_drawGrid);
 
    _layer3D->setCameraMask(2);
 
    updateCameraTransform();
 
}

引用了 _camera, _drawGrid, _layer3D, _rotationQuat, _sprite3D1, _sprite3D2, DrawNode3D::create(), VisibleRect::left(), TestCase::onEnter(), onTouchsMoved(), switchOperateCallback(), switchTargetCallback(), VisibleRect::top(), update() , 以及 updateCameraTransform().

函数调用图:

◆ onExit()

void CameraArcBallDemo::onExit ( )

overridevirtual

在文件 Camera3DTest.cpp 第 1084 行定义.

{
    CameraBaseTest::onExit();
    if (_camera)
    {
        _camera = nullptr;
    }
}

引用了 _camera.

◆ onTouchsMoved()

void CameraArcBallDemo::onTouchsMoved	(	const std::vector< cocos2d::Touch * > &	touchs,
		cocos2d::Event *	event
	)

在文件 Camera3DTest.cpp 第 1093 行定义.

{
    if (!touchs.empty())
    {
        if(_operate == OperateCamType::RotateCamera)           //arc ball rotate
        {
            Size visibleSize = Director::getInstance()->getVisibleSize();
            Vec2 prelocation = touchs[0]->getPreviousLocationInView();
            Vec2 location = touchs[0]->getLocationInView();
            location.x = 2.0f * (location.x) / (visibleSize.width) - 1.0f;
            location.y = 2.0f * (visibleSize.height - location.y) / (visibleSize.height) - 1.0f;
            prelocation.x = 2.0f * (prelocation.x) / (visibleSize.width) - 1.0f;
            prelocation.y = 2.0f * (visibleSize.height - prelocation.y) / (visibleSize.height) - 1.0f;
 
            Vec3 axes;
            float angle;
            calculateArcBall(axes, angle, prelocation.x, prelocation.y, location.x, location.y);    //calculate  rotation quaternion parameters
            Quaternion quat(axes, angle);                                                           //get rotation quaternion
            _rotationQuat = quat * _rotationQuat;
 
            updateCameraTransform();                                                                //update camera Transform
        }
        else if(_operate == OperateCamType::MoveCamera)         //camera zoom 
        {
            Point newPos = touchs[0]->getPreviousLocation() - touchs[0]->getLocation();
            _distanceZ -= newPos.y*0.1f;
 
            updateCameraTransform();
        }
    }
}

引用了 _distanceZ, _operate, _rotationQuat, calculateArcBall(), MoveCamera, RotateCamera , 以及 updateCameraTransform().

被这些函数引用 onEnter().

函数调用图:

这是这个函数的调用关系图:

◆ projectToSphere()

float CameraArcBallDemo::projectToSphere	(	float	r,
		float	x,
		float	y
	)

在文件 Camera3DTest.cpp 第 1149 行定义.

{
    float d, t, z;
    d = sqrt(x*x + y*y);
    if (d < r * 0.70710678118654752440)//inside sphere
    {
        z = sqrt(r*r - d*d);
    }                         
    else                               //on hyperbola
    {
        t = r / 1.41421356237309504880f;
        z = t*t / d;
    }
    return z;
}

被这些函数引用 calculateArcBall().

这是这个函数的调用关系图:

◆ switchOperateCallback()

void CameraArcBallDemo::switchOperateCallback ( cocos2d::Ref * sender )

在文件 Camera3DTest.cpp 第 1175 行定义.

{
    if(_operate == OperateCamType::MoveCamera)
    {
        _operate = OperateCamType::RotateCamera;
    }
    else if(_operate == OperateCamType::RotateCamera)
    {
        _operate = OperateCamType::MoveCamera;
    }
}

引用了 _operate, MoveCamera , 以及 RotateCamera.

被这些函数引用 onEnter().

这是这个函数的调用关系图:

◆ switchTargetCallback()

void CameraArcBallDemo::switchTargetCallback ( cocos2d::Ref * sender )

在文件 Camera3DTest.cpp 第 1187 行定义.

{
    if(_target == 0)
    {
        _target = 1;
        _center = _sprite3D2->getPosition3D();
        updateCameraTransform();
    }
    else if(_target == 1)
    {
        _target = 0;
        _center = _sprite3D1->getPosition3D();
        updateCameraTransform();
    }
}

引用了 _center, _sprite3D1, _sprite3D2, _target , 以及 updateCameraTransform().

被这些函数引用 onEnter().

函数调用图:

这是这个函数的调用关系图:

◆ title()

std::string CameraArcBallDemo::title ( ) const

overridevirtual

重载 TestCase .

在文件 Camera3DTest.cpp 第 1007 行定义.

{
    return "Camera ArcBall Moving";
}

◆ update()

void CameraArcBallDemo::update ( float dt )

overridevirtual

在文件 Camera3DTest.cpp 第 1203 行定义.

{
     //updateCameraTransform();
}

被这些函数引用 onEnter().

这是这个函数的调用关系图:

◆ updateCameraTransform()

void CameraArcBallDemo::updateCameraTransform ( )

在文件 Camera3DTest.cpp 第 1165 行定义.

{
    Mat4 trans, rot, center;
    Mat4::createTranslation(Vec3(0.0f, 10.0f, _distanceZ), &trans);
    Mat4::createRotation(_rotationQuat, &rot);
    Mat4::createTranslation(_center, &center);
    Mat4 result = center * rot * trans;
    _camera->setNodeToParentTransform(result);
}

引用了 _camera, _center, _distanceZ , 以及 _rotationQuat.

被这些函数引用 onEnter(), onTouchsMoved() , 以及 switchTargetCallback().

这是这个函数的调用关系图:

类成员变量说明

◆ _camera

cocos2d::Camera* CameraArcBallDemo::_camera

protected

在文件 Camera3DTest.h 第 217 行定义.

被这些函数引用 onEnter(), onExit() , 以及 updateCameraTransform().

◆ _cameraType

CameraType CameraArcBallDemo::_cameraType

protected

在文件 Camera3DTest.h 第 216 行定义.

◆ _center

cocos2d::Vec3 CameraArcBallDemo::_center

protected

在文件 Camera3DTest.h 第 223 行定义.

被这些函数引用 switchTargetCallback() , 以及 updateCameraTransform().

◆ _distanceZ

float CameraArcBallDemo::_distanceZ

protected

在文件 Camera3DTest.h 第 221 行定义.

被这些函数引用 onTouchsMoved() , 以及 updateCameraTransform().

◆ _drawGrid

cocos2d::DrawNode3D* CameraArcBallDemo::_drawGrid

protected

在文件 Camera3DTest.h 第 218 行定义.

被这些函数引用 onEnter().

◆ _layer3D

cocos2d::Layer* CameraArcBallDemo::_layer3D

protected

在文件 Camera3DTest.h 第 215 行定义.

被这些函数引用 onEnter().

◆ _operate

OperateCamType CameraArcBallDemo::_operate

protected

在文件 Camera3DTest.h 第 222 行定义.

被这些函数引用 onTouchsMoved() , 以及 switchOperateCallback().

◆ _radius

float CameraArcBallDemo::_radius

protected

在文件 Camera3DTest.h 第 220 行定义.

被这些函数引用 calculateArcBall().

◆ _rotationQuat

cocos2d::Quaternion CameraArcBallDemo::_rotationQuat

protected

在文件 Camera3DTest.h 第 219 行定义.

被这些函数引用 calculateArcBall(), onEnter(), onTouchsMoved() , 以及 updateCameraTransform().

◆ _sprite3D1

cocos2d::Sprite3D* CameraArcBallDemo::_sprite3D1

protected

在文件 Camera3DTest.h 第 225 行定义.

被这些函数引用 onEnter() , 以及 switchTargetCallback().

◆ _sprite3D2

cocos2d::Sprite3D* CameraArcBallDemo::_sprite3D2

protected

在文件 Camera3DTest.h 第 226 行定义.

被这些函数引用 onEnter() , 以及 switchTargetCallback().

◆ _target

int CameraArcBallDemo::_target

protected

在文件 Camera3DTest.h 第 224 行定义.

被这些函数引用 switchTargetCallback().

该类的文档由以下文件生成:

/Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/Camera3DTest/Camera3DTest.h
/Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/Camera3DTest/Camera3DTest.cpp

Public 成员函数

Protected 属性

额外继承的成员函数

详细描述

构造及析构函数说明

◆ CameraArcBallDemo()

◆ ~CameraArcBallDemo()

成员函数说明

◆ calculateArcBall()

◆ CREATE_FUNC()

◆ onEnter()

◆ onExit()

◆ onTouchsMoved()

◆ projectToSphere()

◆ switchOperateCallback()

◆ switchTargetCallback()

◆ title()

◆ update()

◆ updateCameraTransform()

类成员变量说明

◆ _camera

◆ _cameraType

◆ _center

◆ _distanceZ

◆ _drawGrid

◆ _layer3D

◆ _operate

◆ _radius

◆ _rotationQuat

◆ _sprite3D1

◆ _sprite3D2

◆ _target