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Visual components (video maker and GUI) for 2D-MR-Sim.

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/*-
 * ========================LICENSE_START=================================
 * mrsim2d-viewer
 * %%
 * Copyright (C) 2020 - 2024 Eric Medvet
 * %%
 * 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.
 * =========================LICENSE_END==================================
 */

package io.github.ericmedvet.mrsim2d.viewer.drawers.actions;

import io.github.ericmedvet.jnb.datastructure.DoubleRange;
import io.github.ericmedvet.mrsim2d.core.ActionOutcome;
import io.github.ericmedvet.mrsim2d.core.bodies.Anchor;
import io.github.ericmedvet.mrsim2d.core.geometry.Point;
import io.github.ericmedvet.mrsim2d.viewer.DrawingUtils;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.util.function.BiPredicate;

public class RemoveLink
    extends AbstractLastingActionOutcomeDrawer {

  private static final Color COLOR = Color.RED;

  private static final DoubleRange RADIUS = new DoubleRange(0, 0.15);

  private final Color color;

  public RemoveLink(Color color, double duration) {
    super(io.github.ericmedvet.mrsim2d.core.actions.RemoveLink.class, duration);
    this.color = color;
  }

  public RemoveLink() {
    this(COLOR, DURATION);
  }

  @Override
  protected BiPredicate innerBuildTask(
      double t, ActionOutcome o) {
    return (dT, g) -> {
      if (o.outcome().isPresent()) {
        g.setColor(color);
        double r = RADIUS.denormalize(dT / duration);
        Anchor.Link link = o.outcome().get();
        Anchor src = link.source();
        g.draw(new Ellipse2D.Double(src.point().x() - r, src.point().y() - r, r * 2d, r * 2d));
        Anchor dst = link.destination();
        g.draw(new Ellipse2D.Double(dst.point().x() - r, dst.point().y() - r, r * 2d, r * 2d));
        double a = src.point().diff(dst.point()).direction();
        Point lSrc = src.point().diff(new Point(a).scale(r));
        Point lDst = dst.point().sum(new Point(a).scale(r));
        DrawingUtils.drawLine(g, lSrc, lDst);
        return dT > duration;
      }
      return true;
    };
  }
}