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我正在开发一个简单的绘画应用程序，如果我们使用描边路径
CGContextMoveToPoint(cacheContext, point1.x, point1.y); CGContextAddCurveToPoint(cacheContext, ctrl1_x, ctrl1_y, ctrl2_x, ctrl2_y, point2.x, point2.y); CGContextStrokePath(cacheContext);
笔画大小保持不变，我希望我的笔画最终变宽