com.simiacryptus.mindseye.pyramid.ValueSampler Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mindseye-art Show documentation

Visual Neural Network Applications

There is a newer version: 2.1.0

/*
 * Copyright (c) 2019 by Andrew Charneski.
 *
 * The author licenses this file to you 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 com.simiacryptus.mindseye.pyramid;

import java.io.Serializable;

public interface ValueSampler extends Serializable {
  double getValue(final double xf, final double yf, final int band);

  default ValueSampler wrapped() {
    return (xf, yf, band) -> {
      while (xf < 0) xf += 1;
      xf %= 1;
      while (yf < 0) yf += 1;
      yf %= 1;
      return ValueSampler.this.getValue(xf, yf, band);
    };
  }

  default ValueSampler zoom(double x, double y, double width, double height) {
    return zoom(width, height).offset(x, y);
  }

  default ValueSampler zoom(double width, double height) {
    return (xf, yf, band) -> ValueSampler.this.getValue(xf * width, yf * height, band);
  }

  default ValueSampler offset(double x, double y) {
    return (xf, yf, band) -> ValueSampler.this.getValue(x + xf, y + yf, band);
  }

  default ValueSampler rotate(double angle) {
    return (xf, yf, band) -> ValueSampler.this.getValue(
        Math.cos(angle) * xf + Math.sin(angle) * yf,
        Math.cos(angle) * yf - Math.sin(angle) * xf,
        band
    );
  }
}