edu.scripps.fl.curves.plot.ShapeFactory.java Source code

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Here is the source code for edu.scripps.fl.curves.plot.ShapeFactory.java

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/*
 * Copyright 2010 The Scripps Research Institute
 *
 * 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 edu.scripps.fl.curves.plot;

import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;

import org.apache.commons.beanutils.ConvertUtils;

/**
 * 
 * @author Mark Southern (southern at scripps dot edu)
 * 
 */
public class ShapeFactory {

    class Circle implements ShapeCreator {
        public Shape create(double delta) {
            return new Ellipse2D.Double(-delta, -delta, delta * 2, delta * 2);
        }
    }

    class Diamond implements ShapeCreator {
        public Shape create(double delta) {
            return new Polygon(intArray(0.0, delta, 0.0, -delta), intArray(-delta, 0.0, delta, 0.0), 4);
        }
    }

    class DownTriangle implements ShapeCreator {
        public Shape create(double delta) {
            return new Polygon(intArray(-delta, +delta, 0.0), intArray(-delta, -delta, delta), 3);
        }
    }

    class HorizontalEllipse implements ShapeCreator {
        public Shape create(double delta) {
            return new Ellipse2D.Double(-delta, -delta / 2, delta * 2, delta);
        }
    }

    class HorizontalRectangle implements ShapeCreator {
        public Shape create(double delta) {
            return new Rectangle2D.Double(-delta, -delta / 2, delta * 2, delta);
        }
    }

    class LeftTriangle implements ShapeCreator {
        public Shape create(double delta) {
            return new Polygon(intArray(-delta, delta, delta), intArray(0.0, -delta, +delta), 3);
        }
    }

    class RightTriangle implements ShapeCreator {
        public Shape create(double delta) {
            return new Polygon(intArray(-delta, delta, -delta), intArray(-delta, 0.0, delta), 3);
        }
    }

    interface ShapeCreator {
        public Shape create(double delta);
    }

    class Square implements ShapeCreator {
        public Shape create(double delta) {
            return new Rectangle2D.Double(-delta, -delta, delta * 2, delta * 2);
        }
    }

    class UpTriangle implements ShapeCreator {
        public Shape create(double delta) {
            return new Polygon(intArray(0.0, delta, -delta), intArray(-delta, delta, delta), 3);
        }
    }

    private static int[] intArray(double... values) {
        return (int[]) ConvertUtils.convert(values, int[].class);
    }

    private ShapeCreator[] shapeCreators = new ShapeCreator[] { new Circle(), new UpTriangle(),
            /*new Diamond(),*/ new HorizontalRectangle(), new DownTriangle(), new HorizontalEllipse(),
            new RightTriangle(), new LeftTriangle(), new Square() };

    private int shapeIndex;

    public Shape getNextShape(double delta) {
        int idx = this.shapeIndex % this.shapeCreators.length;
        Shape result = shapeCreators[idx].create(delta);
        this.shapeIndex++;
        return result;
    }

    public Shape[] getShapes(double delta) {
        Shape[] shapes = new Shape[shapeCreators.length];
        for (int ii = 0; ii < shapes.length; ii++) {
            shapes[ii] = shapeCreators[ii].create(delta);
        }
        return shapes;
    }
}