Android Open Source - android-plotter Function Graph2d

• Back to Graphics/graph  ↑

From Project

Back to project page android-plotter.

License

The source code is released under:

Apache License

Java Source Code

package org.solovyev.android.plotter.meshes;
// www. j  a va  2 s  .c  o  m
import org.solovyev.android.plotter.Dimensions;
import org.solovyev.android.plotter.Function;

import javax.annotation.Nonnull;

public class FunctionGraph2d extends BaseCurve implements FunctionGraph {

  @Nonnull
  private volatile Function function;

  private FunctionGraph2d(@Nonnull Dimensions dimensions, @Nonnull Function function) {
    super(dimensions);
    this.function = function;
  }

  @Nonnull
  public static FunctionGraph2d create(@Nonnull Dimensions dimensions, @Nonnull Function function) {
    return new FunctionGraph2d(dimensions, function);
  }

  @Override
  protected float y(float x) {
    final Function f = function;
    switch (f.getArity()) {
      case 0:
        return f.evaluate();
      case 1:
        return f.evaluate(x);
      case 2:
        return f.evaluate(x, 0);
      default:
        throw new IllegalArgumentException();
    }
  }

  @Override
  public void setFunction(@Nonnull Function function) {
    // todo serso: might be called on GL thread, requires synchronization
    if (!this.function.equals(function)) {
      this.function = function;
      setDirty();
    }
  }

  @Nonnull
  @Override
  public Function getFunction() {
    return function;
  }

  @Nonnull
  @Override
  protected BaseMesh makeCopy() {
    return create(dimensions, function);
  }

  @Override
  public String toString() {
    return function.toString();
  }
}

Java Source Code List

• Back to Graphics/graph  ↑