如何使ccdrawline在cocos2d中画线更平滑

我尝试使用cocos2d制作一个跟踪手指游戏。如何使ccdrawline在cocos2d中画线更平滑

我移动手指来写字母，则结果是这样的：

http://www.freeimagehosting.net/m39l6

的源代码：

-(void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event{ 
    CGPoint touchLocation = [self convertTouchToNodeSpace:touch]; 
    CGPoint oldTouchLocation = [touch previousLocationInView:touch.view]; 
    oldTouchLocation = [[CCDirector sharedDirector]convertToGL:oldTouchLocation]; 
    oldTouchLocation = [self convertToNodeSpace:oldTouchLocation]; 

    NSValue *oldVal = [NSValue valueWithCGPoint:oldTouchLocation]; 
    NSValue *val = [NSValue valueWithCGPoint:touchLocation]; 
    [trails addObject:oldVal]; 
    [trails addObject:val];

}

拉制法：

-(void)draw{ 
    for (int i=0; i<trails.count-1; i++) { 
      origin = ((NSValue *)[trails objectAtIndex:i]).CGPointValue; 
      destination = ((NSValue *)[trails objectAtIndex:i+1]).CGPointValue; 
      ccDrawLine(origin, destination); 
    }

}

我试过glEnable（GL_LINE_SMOOTH）。但这不适用于该设备。

任何想法如何解决红圈部分？

thx。

来源

2012-07-02 Ignasius Erwin