scalismo.sampling.loggers.SteppedAcceptRejectLogger.scala Maven / Gradle / Ivy
/*
* Copyright 2016 University of Basel, Graphics and Vision Research Group
*
* 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.
*/
package scalismo.sampling.loggers
import scalismo.sampling.{DistributionEvaluator, ProposalGenerator}
class SteppedAcceptRejectLogger[A](stepping: Int, logger: AcceptRejectLogger[A]) extends AcceptRejectLogger[A] {
private var counter = 0
override def accept(current: A,
sample: A,
generator: ProposalGenerator[A],
evaluator: DistributionEvaluator[A]): Unit = {
if (counter % stepping == 0)
logger.accept(current, sample, generator, evaluator)
counter += 1
}
override def reject(current: A,
sample: A,
generator: ProposalGenerator[A],
evaluator: DistributionEvaluator[A]): Unit = {
if (counter % stepping == 0)
logger.reject(current, sample, generator, evaluator)
counter += 1
}
}
object SteppedAcceptRejectLogger {
def apply[A](stepping: Int, logger: AcceptRejectLogger[A]) = new SteppedAcceptRejectLogger[A](stepping, logger)
}
class SteppedChainStateLogger[A](stepping: Int, logger: ChainStateLogger[A]) extends ChainStateLogger[A] {
private var counter = 0
override def logState(sample: A): Unit = {
if (counter % stepping == 0)
logger.logState(sample)
counter += 1
}
}
object SteppedChainStateLogger {
def apply[A](stepping: Int, logger: ChainStateLogger[A]) = new SteppedChainStateLogger[A](stepping, logger)
}