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@@ -120,4 +120,11 @@ I oddly enough got this wrong result, when trying to render the hollow ball:
It took me some time to find the error and believe it or not, it was the 3% inaccuracy caused by the fast inverse square algorithm! I had to remove it and replace it with a more simple and accurate but slower calculation. The slow down is small but visible! Now I get:
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+### Chapters 10 and 11: Extra camera utilities and depth of field (blur)
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+I implemented the camera to be movable and also simulated the lens blur effect we see in cameras. I get the following output:
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+