/*******************************************************************************
* Copyright 2012 Geoscience Australia
*
* 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 au.gov.ga.earthsci.worldwind.common.layers.curtain;
import gov.nasa.worldwind.cache.Cacheable;
/**
* Defines a (sub) segment of a {@link Path}. Segments are defined in
* percentages; a vertical 'top' and 'bottom' percentage of the path, and a
* horizontal 'start' and 'end' of the path.
*
* @author Michael de Hoog (michael.dehoog@ga.gov.au)
*/
public class Segment implements Cacheable
{
//percentages, between 0.0 and 1.0
private final double start, end;
private final double top, bottom;
public final static Segment FULL = new Segment(0d, 1d, 0d, 1d);
public Segment(double start, double end, double top, double bottom)
{
this.start = start;
this.end = end;
this.top = top;
this.bottom = bottom;
}
public double getStart()
{
return start;
}
public double getEnd()
{
return end;
}
public double getTop()
{
return top;
}
public double getBottom()
{
return bottom;
}
public double getHorizontalCenter()
{
return 0.5 * (start + end);
}
public double getHorizontalDelta()
{
return end - start;
}
public double getVerticalCenter()
{
return 0.5 * (top + bottom);
}
public double getVerticalDelta()
{
return top - bottom;
}
@Override
public long getSizeInBytes()
{
return 4 * Double.SIZE;
}
@Override
public String toString()
{
return "(" + start + "," + top + " to " + end + "," + bottom + ")";
}
}