Cocos2d-x之绘制圆形

自定义的方法

Circle.h

 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__) */

Circle.cpp

 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 }

在bool HelloWorld::init()中

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

c->setPosition(Point(400, 100));

addChild(c);