And when we get to the last key frame, we're here at frame 45 of our animation. So if we scrub through this, you'll notice that my frame count for the time remapping is starting at zero. Once it hits the last key frame, start over again. Basically what this line of code is telling After Effects to do is start repeating or cycling through the key framed animation. So for this, I'm going to come over to the Property family and I'm going to select Loop Out. Over here we have this little fly out menu that allows us to insert basic lines of code into our expression. If we tap on this, you can see that the red numbers turn back to blue, indicating to us that the expression is off. Over here we have a button that enables or re-enables the expression. Underneath we have the expressions window where we'll do the actual typing of code. The original blue value now turns red, and that's After Effects indicating to us that a particular property is driven by expressions. When we do, you'll notice a couple things. To add an expression to a property, either right-click on the property and select Edit Expression, or hold alt or option and click on the property stopwatch. And we're going to manipulate these key frames by using expressions. After Effects gives us two key frames for the start and the end. Let's right-click on this layer and come up to Time. Let's use time remapping to get looping involved. And here you can see that it only plays once. I'll nest this into a new composition here, this 03 comp. In this composition, I've got an animation of a wifi signal and it just animates on and animates off over the course of what, 45 frames, 44 frames? Let's see how we can loop this. Expressions can be daunting, but it's helpful to see how the basics work and how they can speed up your workflow. They can be used in place of key frames or work in conjunction with them. When set to a positive value, ANALYZE will assume that the column contains exactly the specified number of distinct nonnull values.- After Effects offers users the ability to simplify and automate tasks using lines of code in a system called expressions. n_distinct affects the statistics for the table itself, while n_distinct_inherited affects the statistics gathered for the table plus its inheritance children. Currently, the only defined per-attribute options are n_distinct and n_distinct_inherited, which override the number-of-distinct-values estimates made by subsequent ANALYZE operations. This form sets or resets per-attribute options. SET STATISTICS acquires a SHARE UPDATE EXCLUSIVE lock. For more information on the use of statistics by the PostgreSQL query planner, refer to Section 14.2. The target can be set in the range 0 to 10000 alternatively, set it to -1 to revert to using the system default statistics target ( default_statistics_target). This form sets the per-column statistics-gathering target for subsequent ANALYZE operations. sequence_option is an option supported by ALTER SEQUENCE such as INCREMENT BY. These forms alter the sequence that underlies an existing identity column. If DROP IDENTITY IF EXISTS is specified and the column is not an identity column, no error is thrown. Like SET DEFAULT, these forms only affect the behavior of subsequent INSERT and UPDATE commands they do not cause rows already in the table to change. These forms change whether a column is an identity column or change the generation attribute of an existing identity column. RENAME CONSTRAINT constraint_name TO new_constraint_nameĪLTER TABLE ALL IN TABLESPACE name ]ĪTTACH PARTITION partition_name AS IDENTITY
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