com.d3x.morpheus.viz.jfree.JFChartShapes Maven / Gradle / Ivy
/*
* Copyright (C) 2014-2018 D3X Systems - All Rights Reserved
*
* 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 com.d3x.morpheus.viz.jfree;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.util.HashMap;
import java.util.Map;
import com.d3x.morpheus.viz.chart.ChartShape;
/**
* A class that manages a mapping between Morpheus ChartShape definitions and their AWT shape representation
*
* @author Xavier Witdouck
*
* This is open source software released under the Apache 2.0 License
*/
class JFChartShapes {
private Map shapeMap = new HashMap<>();
/**
* Constructor
*/
JFChartShapes() {
this(6d);
}
/**
* Constructor
* @param size the size for shapes
*/
private JFChartShapes(double size) {
final double delta = size / 2.0;
shapeMap.put(ChartShape.SQUARE, new Rectangle2D.Double(-delta, -delta, size, size));
shapeMap.put(ChartShape.CIRCLE, new Ellipse2D.Double(-delta, -delta, size, size));
shapeMap.put(ChartShape.DIAMOND, new Polygon(intArray(0.0, delta, 0.0, -delta), intArray(-delta, 0.0, delta, 0.0), 4));
shapeMap.put(ChartShape.TRIANGLE_UP, new Polygon(intArray(0.0, delta, -delta), intArray(-delta, delta, delta), 3));
shapeMap.put(ChartShape.TRIANGLE_DOWN, new Polygon(intArray(-delta, +delta, 0.0), intArray(-delta, -delta, delta), 3));
shapeMap.put(ChartShape.TRIANGLE_RIGHT, new Polygon(intArray(0.0, delta, 0.0, -delta), intArray(-delta, 0.0, delta, 0.0), 4));
shapeMap.put(ChartShape.TRIANGLE_LEFT, new Polygon(intArray(-delta, delta, delta), intArray(0.0, -delta, +delta), 3));
}
/**
* Returns the AWT shape object for the chart shape specifed
* @param shape the chart shape identifier
* @return the AWT shape object, if one exists, otherwise null
*/
Shape getShape(ChartShape shape) {
return shapeMap.get(shape);
}
private static int[] intArray(double a, double b, double c) {
return new int[] {(int) a, (int) b, (int) c};
}
private static int[] intArray(double a, double b, double c, double d) {
return new int[] {(int) a, (int) b, (int) c, (int) d};
}
}