Quartz2D简单绘制之实心圆&实心矩形

// 实心圆 实心矩形 
    CGContextRef contextRef = UIGraphicsGetCurrentContext();
    CGContextSetRGBStrokeColor(contextRef, 1.0f, 1.0f, 1.0f, 1);
    CGContextSetLineWidth(contextRef, 2.0f);
    CGFloat    components[] = { 1.0f, 0.0f, 0.0f, 1.0f};
    CGContextSetFillColor(contextRef, components);
    CGContextAddRect(contextRef, CGRectMake(50.0f, 50.0f, 100.0f, 100.0f));
    CGContextStrokePath(contextRef);
    CGContextFillEllipseInRect(contextRef, CGRectMake(50.0f, 50.0f, 100.0f, 100.0f));
    CGContextFillRect(contextRef, CGRectMake(150.0f, 150.0f, 100.0f, 100.0f));