FluidDataSetWr

Extension

Description

A UGen that adds data points with associated identifiers to a FluidDataSet Internally, this calls setPoint, so IDs that already exist will be overwritten, and new IDs will be added. The actual work is done on the server's command queue, rather than the real-thread.

By default the object takes a control input (idNumber) as a numerical index that gets used for the point identifiers. This index is used to write each time the Ugen is re-triggered with a zero to non-zero transition. The identifier is then concatenated with the idPrefix symbol, which is fixed at instantiation. In this way, one can make custom, incrementing identifiers, e.g.FluidDataSetWr.kr(~somedataset,"my_data",PulseCount.kr(trig),~somebuffer,trig)

would add points like my_data0, mydata1, mydata2... if successively retriggered.

Alternatively, for one shot use you may not want a numerical suffix at all. Setting idNumber to nil will bypass this and use only the idPrefix string.

Class Methods

.kr

Examples

incremental buffer writing - sky is the limit// start the entry maker, trigging 30 times per second ( ~ds.clear; { var buf = LocalBuf(4); var trig = Impulse.kr(30); var count = PulseCount.kr(trig) - 1; FluidKrToBuf.kr(WhiteNoise.kr(1.dup(4)),buf); FluidDataSetWr.kr(~ds,"point-",idNumber: count, trig: trig, buf:buf); }.play; ) //print a few times ~ds.print; //clear before flushing the writing synth and the process keeps on going ~ds.clear ~ds.print; //command-period to stop it ~ds.print; ~ds.clear

Circular Writing

Each time FluidDataSetWr is triggered it is like the FluidDataSet: -setPoint method so if the identifier does not exist it creates it. If the identifier does it exist then it updates it with the new values.

By looping idNumber values, we can use a FluidDataSet similar to a "circle buffer", always have the most recent n points in it that we want.~ds.clear; // always have only the most recent 10 points in the buffer ( { var buf = LocalBuf.newFrom([0,1,2,3]); var noise = WhiteNoise.kr(1.dup(4)) + Sweep.kr(1,1); var trig = Impulse.kr(2); var count = Stepper.kr(trig, min: 0, max: 9, resetval: -1); //0 to 9, starting at -1 to catch the first entry FluidKrToBuf.kr(noise,buf); FluidDataSetWr.kr(~ds, "point-",idNumber: count, trig: trig, buf:buf); }.play; ) //print regularly to see a specific identifier being overwritten ~ds.print; ~ds.clear;