objective-c - 无限源矩形到drawImage方法

Question

为什么我总是收到此日志，绘制图像方法的无限源矩形，这是一个错误还是代码算法有问题。我对此不太了解，并且在谷歌上找不到任何有用的信息。希望我能在这个网站上找到答案。

抱歉，这是我的drawRect方法:

- (void)drawRect:(NSRect)rect {
    // Drawing code here.

    // drawBackground
    [[NSColor colorWithCalibratedRed:0 green:0 blue:0 alpha:1.0] set];
    [NSBezierPath fillRect:[self bounds]];

    if (myCIImage != nil) {

        //Create the CIContext
        CIContext *context =  [[NSGraphicsContext currentContext] CIContext];

        //scale to fit in view rect
        CIImage *drawnImage;
        if (previewFilter == YES) {
            drawnImage = [previewImage imageByApplyingTransform:[self imageTransformToFitView]];
        } else {
            drawnImage = [myCIImage imageByApplyingTransform:[self imageTransformToFitView]];
        }

        // center in view rect
        NSRect viewBounds = [self bounds];
        CGRect sRect = [drawnImage extent];
        CGRect dRect = sRect;
        dRect.origin.x = viewBounds.origin.x + (viewBounds.size.width - sRect.size.width)/2;
        dRect.origin.y = viewBounds.origin.y + (viewBounds.size.height - sRect.size.height)/2;


        [context drawImage:drawnImage
                    inRect:dRect
                  fromRect:sRect];

    }

}

谢谢-

Answer 1

我认为这意味着 sRect 的尺寸包含一些无限的数字。您是否在调试器下运行了它并检查了 sRect 中的值？

您应用于图像的变换可能是错误的。