Cocos2d-x之绘制圆形

自定义的方法

Circle.h

//
//  Circle.h
//  L01DrawingAPI
//
//  Created by Mac OS 10.9.3 on 15-3-30.
//
//

#ifndef __L01DrawingAPI__Circle__
#define __L01DrawingAPI__Circle__

#include <iostream>
#include <cocos2d.h>

using namespace cocos2d;

namespace bobo {
    
    class Circle:public Node{

    public:
        
        virtual bool init();
        virtual void draw();
        CREATE_FUNC(Circle);
        
    };
}

#endif /* defined(__L01DrawingAPI__Circle__) */

Circle.cpp

//
//  Circle.cpp
//  L01DrawingAPI
//
//  Created by Mac OS 10.9.3 on 15-3-30.
//
//

#include "Circle.h"

namespace bobo {
    
    bool Circle::init(){
        return true;
    }
    
    void Circle::draw(){
        
        //float scaleX, float scaleY指的是对x，y轴的缩放
        //DrawPrimitives::drawCircle(const cocos2d::Point &center, float radius,
        //                                   float angle, unsigned int segments,
        //                                   bool drawLineToCenter, float scaleX,
        //                                   float scaleY);
        
        //绘制圆形，（圆心，半径，角度（单位是弧度，现在是360度），
        //边的个数，是否绘制一条连接到圆心的线）
        //边的数是几就是正几边型
        //DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 3, true);
        //DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 5, true);
        DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 100, true);
    }
}

在bool HelloWorld::init()中

auto c = bobo::Circle::create();

    c->setPosition(Point(400, 100));

    addChild(c);