How do I modify a GPUImageGaussianSelectiveBlurFilter to operate over a rectangle instead of a circle?

Question

I have used the GPUImage framework for a blur effect similar to that of the Instagram application, where I have made a view for getting a picture from the photo library and

Answer 1

Did it ... the code for the rectangular effect is just in these 2 lines

blurFilter = [[GPUImageGaussianSelectiveBlurFilter alloc] init];
        [(GPUImageGaussianSelectiveBlurFilter*)blurFilter      setExcludeCircleRadius:80.0/320.0];
        [(GPUImageGaussianSelectiveBlurFilter*)blurFilter setExcludeCirclePoint:CGPointMake(0.5f, 0.5f)];
       // [(GPUImageGaussianSelectiveBlurFilter*)blurFilter setBlurSize:0.0f];            [(GPUImageGaussianSelectiveBlurFilter*)blurFilter setAspectRatio:0.0f];