packages/stunner-editors/lienzo-webapp/src/main/java/org/kie/lienzo/client/ArrowsExample.java

/*
 * 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.kie.lienzo.client;

import com.ait.lienzo.client.core.shape.Arrow;
import com.ait.lienzo.client.core.types.Point2D;
import com.ait.lienzo.client.core.types.Shadow;
import com.ait.lienzo.shared.core.types.ArrowType;
import com.ait.lienzo.shared.core.types.Color;
import com.ait.lienzo.shared.core.types.LineJoin;
import org.kie.lienzo.client.util.Util;

public class ArrowsExample extends BaseShapesExample<Arrow> implements Example {

    public ArrowsExample(String title) {
        super(title);
        this.setPaddings(20, 20, 30, 100);
        numberOfShapes = 40;
        shapes = new Arrow[numberOfShapes];
    }

    @Override
    public void run() {
        for (int i = 0; i < numberOfShapes; i++) {

            double x1 = Util.randomDoubleBetween(0, width);
            double y1 = Util.randomDoubleBetween(0, height);

            double len = Util.randomDoubleBetween(20, 200);
            double a = Util.randomDoubleBetween(0, 2 * Math.PI);

            double x2 = x1 + len * Math.cos(a);
            double y2 = y1 + len * Math.sin(a);

            double baseWidth = len * Util.randomDoubleBetween(0.05, 0.60);
            double headWidth = baseWidth * Util.randomDoubleBetween(1.2, 1.5);
            double arrowAngle = Util.randomDoubleBetween(25, 70);
            double baseAngle = Util.randomDoubleBetween(15, 100 - arrowAngle);

            shapes[i] = new Arrow(new Point2D(x1, y1), new Point2D(x2, y2),
                                  baseWidth, headWidth, arrowAngle, baseAngle,
                                  Util.randomValue(ArrowType.values()));

            int strokeWidth = Util.randomIntBetween(1, 10);

            shapes[i].setShadow(new Shadow("black", 6, 6, 6))
                    .setFillColor(Color.getRandomHexColor())
                    .setStrokeWidth(strokeWidth)
                    .setStrokeColor(Color.getRandomHexColor())
                    .setLineJoin(Util.randomValue(LineJoin.values()))
                    .setDraggable(true);

            layer.add(shapes[i]);
        }
        setLocation();
        layer.draw();
    }
}