Android Open Source - android-plotter Zoom Levels

• 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;
/*www  .j  a va2s  .c  om*/
public class ZoomLevels {

  private static final int K = 3;

  public float x;
  public float y;

  void adjust() {
    if ((x > 1f && y < 1f) || (y > 1f && x < 1f)) {
      reset();
      return;
    }

    // adjustDifference();
  }

  private void adjustDifference() {
    if (x > 1f) {
      if (x > K * y) {
        y = 1;
      }
    } else if (x < 1f) {
      if (K * x < y) {
        y = 1;
      }
    }

    if (y > 1f) {
      if (y > K * x) {
        x = 1;
      }
    } else if (y < 1f) {
      if (K * y < x) {
        x = 1;
      }
    }
  }

  boolean isChanged() {
    return x != 1f || y != 1f;
  }

  @Override
  public String toString() {
    return "ZoomLevels{" +
        "x=" + x +
        ", y=" + y +
        '}';
  }

  public float getLevel() {
    if (x == 1f) {
      return y;
    }

    if (y == 1f) {
      return x;
    }
    return x > 1f ? Math.max(x, y) : Math.min(x, y);
  }

  void reset() {
    x = 1f;
    y = 1f;
  }
}

Java Source Code List

• Back to Graphics/graph  ↑