I am overwhelmed by the vast number of options. Which is a compliment.
But I cannot find how I can make a circular pattern for every effect (I have a 300 LED ring behind the ceiling plate of a truss of bulbs) that is continuous all around. Many effects show a sharp transition at the end of the strip. Which I don’t like.
I can change the segment into a mirror, but that is not the nicest option for many effect patterns.
Is there an option to blend the first few LEDs with the last few LEDs? I think that that would give the nicest result. Then at least the sharp abrupt transition is not so visible any more.
I assume it is there, but who helps me to find it?
Try playing with the “Palette Blending” setting in “LED Settings.” I don’t believe this will alter any patterns, but I think it should smooth out the color difference between the two ends of the strip.
Palette blending helps for transitions between different effects, but is not really the issue here.
Loops are … a rough edge … and this affects both Pixel Loop and Time Loop.
Pixel Loops
Unfortunately, the issue you hit (Pixel Loops) is not easily fixed. The problem is that you must choose an effect, and most effects were not designed to have smooth transitions if the LED segment is a loop (a circle, a box, etc.). Smooth segment-end transitions require support in the Effect itself. To fix this, you will need to adjust the code for the Effect itself.
Time Loops
A similar problem is common when an effect is time-bound. This is much more common in xLights, as most WLED effects appear to presume infinite runtime, but still worth keeping in mind. Basically, even when staying with the same effect, if it has a maximum run time of 30s (maybe to keep speed reasonable), the transition (between when the effect ends and when it starts again) can also be visible.
Transitions between different effects
As noted above, enabling palette blending can help. However, there is still no easy way to ensure a smooth transition … you just have to try the two effects and see how it looks when transitioning between them. In this area, something like xLights has an advantage, as it can spend more CPU generating multiple effects overlapping in time, and alpha blend them during a transition time … not something we’ll likely see this year in WLED, as it requires >2x the effect CPU overhead (and will definitely be ESP32+ if it does appear).
Summary
Sorry to have to provide the negative news. If you are a programmer, creating a custom effect is not extremely difficult, and might be a reasonable option.