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-rw-r--r--src/com/jsyn/unitgen/FunctionEvaluator.java76
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diff --git a/src/com/jsyn/unitgen/FunctionEvaluator.java b/src/com/jsyn/unitgen/FunctionEvaluator.java
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--- a/src/com/jsyn/unitgen/FunctionEvaluator.java
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-/*
- * Copyright 2009 Phil Burk, Mobileer Inc
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * Aug 26, 2009
- * com.jsyn.engine.units.TunableFilter.java
- */
-
-package com.jsyn.unitgen;
-
-import com.jsyn.data.Function;
-import com.jsyn.ports.UnitFunctionPort;
-import com.jsyn.ports.UnitInputPort;
-
-/**
- * Convert an input value to an output value. The Function is typically implemented by looking up a
- * value in a DoubleTable. But other implementations of Function can be used. Input typically ranges
- * from -1.0 to +1.0.
- *
- * <pre>
- * <code>
- * // A unit that will lookup the function.
- * FunctionEvaluator shaper = new FunctionEvaluator();
- * synth.add( shaper );
- * shaper.start();
- * // Define a custom function.
- * Function cuber = new Function()
- * {
- * public double evaluate( double x )
- * {
- * return x * x * x;
- * }
- * };
- * shaper.function.set(cuber);
- *
- * shaper.input.set( 0.5 );
- * </code>
- * </pre>
- *
- * @author Phil Burk (C) 2009 Mobileer Inc
- * @see Function
- */
-public class FunctionEvaluator extends UnitFilter {
- public UnitInputPort amplitude;
- public UnitFunctionPort function;
-
- public FunctionEvaluator() {
- addPort(amplitude = new UnitInputPort("Amplitude", 1.0));
- addPort(function = new UnitFunctionPort("Function"));
- }
-
- @Override
- public void generate(int start, int limit) {
- double[] inputs = input.getValues();
- double[] amplitudes = amplitude.getValues();
- double[] outputs = output.getValues();
- Function functionObject = function.get();
-
- for (int i = start; i < limit; i++) {
- outputs[i] = functionObject.evaluate(inputs[i]) * amplitudes[i];
- }
-
- }
-}