I'm on the project Once Upon A Fable for the third year groups, and Jake asked me to look into producing rain effects similar to the ones in my header, which will teach me for showing off. The method for making the rain effect for GIF's is a combination of noise, motion blur and overlay, so I made some quick roughs to try and create a similar effect.
Using the same kinds of values as I did for the header, it's obvious that the rain and noise effects are diminished on an image of a larger size. I also messed around with the values too much, hence why it flickers to a much lighter image all of a sudden because of the changing noise effect.
Test number 2, I changed the angle of the rain to 77 to see how angled rain would look. As the last values were at roughly the 90% and 70% region for noise and motion blur respectively, I doubled the amount of noise to compensate for the larger size. The result is a cleaner look with less of the jumping effect the previous one has, with a reduction in the darkness caused by the overlay.
Ignore the flickering of the pallette, that's just my own stupidity that caused it.
This one was made without using the mentioned method, using a splatter brush and motion blur on multiple layers. The splatter is too big so it looks more like sleet or a heavy snow. This is more down to the brush size so I'm going to try again with a smaller size. However, the differing sizes of the drops do give it more depth.
Although this is a slightly different version of the above scene (yes, I think I got the wrong one today), this is with small circular brushes rather than a splatter brush. I think the effects better but unlike the noise method I need to pay attention to where the brush strokes are going to be blurred, the bottom left corner doesn't have a continuous movement from top to bottom where I left a gap on one of the frames. The rain is also much lighter as the density of brush marks is less.
I decided to change scene as I needed to check if I could get the same effect using a radial blur like the motion blur. This is with noise and as the edges had to be stretched to get rid of the weird border the central rain point shifts about the place a bit.
Fiddling with the scattering on the brush made making this one a lot less tedious than individual dots. The pattern was smaller dots in the centre with larger ones towards the outside to simulate the rain drops getting closer to a camera lens.