185663b52b
Following on from my commit to introduce frame ranges for FModifiers, those frame ranges can now have blend in/out values. By setting a blendin or blendout value, you're specifying the number of frames for the modifier's "full influence" to take effect or fade out relative to the start/end frames. The "full influence" above needs a little clarification. When the "use influence" setting is enabled, "full influence" is taken from the "influence" slider (a new setting). Otherwise, it uses 1.0 (i.e. unmodified influence, same as old behaviour before the introduction of influence controls). The influence slider basically says how much the modifier's effects are allowed to contribute to the final result. --- Notes: - This opt-in "Use Influence" approach is really forced upon us because there are heaps of old files for which we cannot easily version patch without spending some effort going through all the data in the file, hunting out the F-Modifiers. - interpf() seems to use a backwards order compared to everything else