org.apache.commons.imaging.formats.tiff.photometricinterpreters.floatingpoint.PaletteEntryForValue Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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 org.apache.commons.imaging.formats.tiff.photometricinterpreters.floatingpoint;
import java.awt.Color;
/**
* Provides a palette entry for a color assignment to a single value. This class
* will assign a color to a value only if it is an exact match for the input.
* This class will also support Float.NaN
*/
public class PaletteEntryForValue implements PaletteEntry {
private final float value;
private final int iColor;
private final Color color;
private final boolean isNull;
/**
* Constructs a palette entry for a single value.
*
* This class will support color-assignments for Float.NaN.
*
* @param value the color value associated with this palette entry; a
* Float.NaN is allowed.
* @param color the color assigned to value
*/
public PaletteEntryForValue(final float value, final Color color) {
if (color == null) {
throw new IllegalArgumentException("Null colors not allowed");
}
this.value = value;
this.color = color;
this.iColor = color.getRGB();
isNull = Float.isNaN(value);
}
@Override
public boolean isCovered(final float f) {
if (isNull) {
return Float.isNaN(f);
}
return f == value;
}
@Override
public int getARGB(final float f) {
if (isNull && Float.isNaN(f)) {
return iColor;
}
if (f == value) {
return iColor;
}
return 0;
}
@Override
public Color getColor(final float f) {
if (isNull && Float.isNaN(f)) {
return color;
}
if (f == value) {
return color;
}
return null;
}
@Override
public boolean coversSingleEntry() {
return true;
}
@Override
public float getLowerBound() {
return value;
}
@Override
public float getUpperBound() {
return value;
}
@Override
public String toString() {
return "PaletteEntry for single value" + value;
}
}