Cocos2d-x之绘制圆形

 1 //
 2 //  Circle.h
 3 //  L01DrawingAPI
 4 //
 5 //  Created by Mac OS 10.9.3 on 15-3-30.
 6 //
 7 //
 8 
 9 #ifndef __L01DrawingAPI__Circle__
10 #define __L01DrawingAPI__Circle__
11 
12 #include <iostream>
13 #include <cocos2d.h>
14 
15 using namespace cocos2d;
16 
17 namespace bobo {
18     
19     class Circle:public Node{
20 
21     public:
22         
23         virtual bool init();
24         virtual void draw();
25         CREATE_FUNC(Circle);
26         
27     };
28 }
29 
30 #endif /* defined(__L01DrawingAPI__Circle__) */

 1 //
 2 //  Circle.cpp
 3 //  L01DrawingAPI
 4 //
 5 //  Created by Mac OS 10.9.3 on 15-3-30.
 6 //
 7 //
 8 
 9 #include "Circle.h"
10 
11 namespace bobo {
12     
13     bool Circle::init(){
14         return true;
15     }
16     
17     void Circle::draw(){
18         
19         //float scaleX, float scaleY指的是对x，y轴的缩放
20         //DrawPrimitives::drawCircle(const cocos2d::Point &center, float radius,
21         //                                   float angle, unsigned int segments,
22         //                                   bool drawLineToCenter, float scaleX,
23         //                                   float scaleY);
24         
25         //绘制圆形，（圆心，半径，角度（单位是弧度，现在是360度），
26         //边的个数，是否绘制一条连接到圆心的线）
27         //边的数是几就是正几边型
28         //DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 3, true);
29         //DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 5, true);
30         DrawPrimitives::drawCircle(Point(0, 0), 50, M_PI * 2, 100, true);
31     }
32 }