在Mac的左上角绘制图像的正确方法是什么？

I have an NSView in a ScrollView and I'm trying to draw an image in it. The problem is that I want the upper left corner of the image locked to the upper left corner of the frame, instead of the lower left corner, which is what the View wants me to do. I will need to be able to zoom in and out, and rotate.I have an NSView in a ScrollView and I'm trying