/*
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 * and open the template in the editor.
 */
package preloaders;

import javafx.animation.AnimationTimer;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.PathTransition;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.application.Preloader;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.effect.BlurType;
import javafx.scene.effect.BoxBlurBuilder;
import javafx.scene.effect.DropShadowBuilder;
import javafx.scene.effect.InnerShadowBuilder;
import javafx.scene.paint.Color;
import javafx.scene.shape.ClosePath;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.SVGPath;
import javafx.scene.shape.Shape;
import javafx.scene.shape.StrokeLineJoin;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *
 * @author Jasper
 */
public class PathPreloader extends Preloader {
    
    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override public void start(Stage stage) throws Exception {
        stage.setTitle("JavaFX Preloaders");
        
        Group root = new Group();   
        final Scene scene = new Scene(root, 800, 600);
        scene.setFill(Color.gray(0.1));
        
        final int itemCount = 500;
        final int itemSize = 5;
        final double length = 0.5;
//        
//        Path p = new Path();
//        p.getElements().add(new MoveTo(300, 200));
//        p.getElements().add(new LineTo(250, 350));
//        p.getElements().add(new LineTo(350, 350));
//        p.getElements().add(new ClosePath());
//        root.getChildren().add(p);
        
        SVGPath p = new SVGPath();
        p.setContent("M686.911,343.946c6.184-10.894,27.583-16.477,38.426-11.242"+
 "c17.16,8.284,32.545,72.781-83.294,79.225c-47.176,2.624-78.244,11.899-213.155,18.408c-9.448,0.456-195.134-2.104-252.663-11.242"+
 "C12.319,393.06,9.098,299.747,35.396,259.923c41.42-62.722,107.692-40.236,90.105,1.155c-5.153,12.127-8.413,20.786-8.413,22.514"+
 "c0.592,5.917,4.733,14.793,10.059,7.692c10.059-14.201-15.385-24.852-26.036-22.485c-12.426,2.367-25.444,16.568-23.077,30.178"+
 "c1.775,8.284,7.101,16.568,14.793,17.751c13.609,2.366,6.509-7.692-3.551-6.509c-17.16,1.775-24.26,26.035-18.935,40.236"+
 "c4.142,11.242,26.035,15.977,36.095,13.018c17.16-4.142,28.959-2.366,47.894-18.343c3.838-3.238,3.585-24.853,10.094-23.669"+
 "c7.101,1.775,6.509,18.344,7.101,23.669c0,5.917,0,11.243,0,16.567c1.775-9.467,19.527-44.378,33.728-32.544"+
 "c10.059,8.284-0.592,40.829,17.751,32.544c13.018-5.324,38.461-45.562,54.438-35.502c11.834,7.1,9.467,41.42-4.142,42.604"+
 "c-14.793,1.184-23.9-14.412-32.184-22.697c-1.184,20.711,28.634,32.756,45.793,26.839c16.568-5.325,27.219-18.935,34.32-33.136"+
 "c3.55-6.51,20.71-34.32,21.893-10.651c0.592,10.06-24.852,33.136-28.994,21.302c7.692,8.876,8.284,14.793,18.935,19.527"+
 "c9.468,4.142,16.568,4.142,25.444-1.775c4.734-3.551,12.426-9.468,15.385-13.609c5.325-5.918,5.917-15.385,11.834-21.303"+
 "c7.101-5.916,28.402-11.242,28.994,2.367c0,4.143-5.326,11.834-6.509,15.977c-3.551,8.876-7.586,19.527-16.462,23.077"+
 "c5.917-14.793,19.42-21.302,28.296-34.911c2.958-4.734,6.509-11.243,13.609-9.468c15.385,4.142,0.592,28.402,0,37.278"+
 "c10.651-8.284,14.201-17.16,20.118-28.402c2.367-4.734,2.959-7.102,8.284-10.06c7.692-4.733,13.018-5.917,15.977,2.367"+
 "c3.55,8.876-4.143,18.935-0.592,27.219c6.509,17.751,23.077,6.509,31.952-1.775c12.427-10.06,66.864-66.864,34.912-79.881"+
 "c-14.201-5.326-24.261,13.018-27.812,24.26c-4.142,13.018-0.591,24.261,1.184,37.278c1.775,11.242,4.699,28.402,20.084,28.994"+
 "c10.059,0,61.538-23.077-17.752-44.971c8.876,15.976,74,19.527,81.101,8.876c4.142-5.325,17.751-40.237,5.325-47.337"+
 "c-10.06-6.509-22.485,34.911-23.669,42.604c-1.775,16.567,0.001,37.277,17.16,40.236c3.796,1.968,29.586-11.834,36.687-14.201"+
 "c8.283-2.959,27.811-24.261,17.159-29.586c-16.568-8.876-28.994,34.911-15.385,42.012"+
 "C657.325,374.716,676.852,356.964,686.911,343.946z");
//        p.setContent("M125.372,262.29c-3.55,5.917-8.284,14.201-8.284,21.302c0.592,5.917,4.733,14.793,10.059,7.692c10.059-14.201-15.385-24.852-26.036-22.485c-12.426,2.367-25.444,16.568-23.077,30.178"+
// "c1.775,8.284,7.101,16.568,14.793,17.751c13.609,2.366,6.509-7.692-3.551-6.509c-17.16,1.775-24.26,26.035-18.935,40.236"+
// "c4.142,11.242,26.035,15.977,36.095,13.018c17.16-4.142,28.959-2.366,47.894-18.343c3.838-3.238,3.585-24.853,10.094-23.669"+
// "c7.101,1.775,6.509,18.344,7.101,23.669c0,5.917,0,11.243,0,16.567c1.775-9.467,19.527-44.378,33.728-32.544"+
// "c10.059,8.284-0.592,40.829,17.751,32.544c13.018-5.324,38.461-45.562,54.438-35.502c11.834,7.1,9.467,41.42-4.142,42.604"+
// "c-14.793,1.184-23.9-14.412-32.184-22.697c-1.184,20.711,28.634,32.756,45.793,26.839c16.568-5.325,27.219-18.935,34.32-33.136"+
// "c3.55-6.51,20.71-34.32,21.893-10.651c0.592,10.06-24.852,33.136-28.994,21.302c7.692,8.876,8.284,14.793,18.935,19.527"+
// "c9.468,4.142,16.568,4.142,25.444-1.775c4.734-3.551,12.426-9.468,15.385-13.609c5.325-5.918,5.917-15.385,11.834-21.303"+
// "c7.101-5.916,28.402-11.242,28.994,2.367c0,4.143-5.326,11.834-6.509,15.977c-3.551,8.876-7.586,19.527-16.462,23.077"+
// "c5.917-14.793,19.42-21.302,28.296-34.911c2.958-4.734,6.509-11.243,13.609-9.468c15.385,4.142,0.592,28.402,0,37.278"+
// "c10.651-8.284,14.201-17.16,20.118-28.402c2.367-4.734,2.959-7.102,8.284-10.06c7.692-4.733,13.018-5.917,15.977,2.367"+
// "c3.55,8.876-4.143,18.935-0.592,27.219c6.509,17.751,23.077,6.509,31.952-1.775c12.427-10.06,66.864-66.864,34.912-79.881"+
// "c-14.201-5.326-24.261,13.018-27.812,24.26c-4.142,13.018-0.591,24.261,1.184,37.278c1.775,11.242,4.699,28.402,20.084,28.994"+
// "c10.059,0,61.538-23.077-17.752-44.971c8.876,15.976,74,19.527,81.101,8.876c4.142-5.325,17.751-40.237,5.325-47.337"+
// "c-10.06-6.509-22.485,34.911-23.669,42.604c-1.775,16.567,0.001,37.277,17.16,40.236c3.796,1.968,29.586-11.834,36.687-14.201"+
// "c8.283-2.959,27.811-24.261,17.159-29.586c-16.568-8.876-28.994,34.911-15.385,42.012c18.936,9.468,38.462-8.284,48.521-21.302");
        p.setStroke(Color.gray(0.2));
        p.setStrokeWidth(8);
        p.setStrokeLineJoin(StrokeLineJoin.ROUND);
        p.setCache(true);
        p.setEffect(DropShadowBuilder.create()
                .color(Color.BLACK)
                .offsetX(0).offsetY(0).radius(20)
                .blurType(BlurType.ONE_PASS_BOX).build());
        root.getChildren().add(p);
        
        
        Group shapes1 = new Group();   
        shapes1.setEffect(DropShadowBuilder.create()
                .color(Color.rgb(0, 255, 255))
                .offsetX(0).offsetY(0).radius(20)
                .blurType(BlurType.ONE_PASS_BOX).build());
//        shapes1.setEffect(BoxBlurBuilder.create().width(20).height(20).build());
        Group shapes2 = new Group();   
        root.getChildren().addAll(shapes1, shapes2);
        shapes2.setEffect(DropShadowBuilder.create()
                .color(Color.rgb(255, 0, 255))
                .offsetX(0).offsetY(0).radius(20)
                .blurType(BlurType.ONE_PASS_BOX).build());
//        shapes2.setEffect(BoxBlurBuilder.create().width(20).height(20).build());

        final Shape[] shapes = new Shape[itemCount];
        final PathTransition[] pathTransitions = new PathTransition[itemCount];
        
        final Shape[] shapesRev = new Shape[itemCount];
        final PathTransition[] pathTransitionsRev = new PathTransition[itemCount];
        
        for (int i=0; i <itemCount; i++) {
            Rectangle item = new Rectangle();
            item.setWidth(itemSize);
            item.setHeight(itemSize);
            item.setFill(Color.rgb(0, 255, 255, 1-clamp( (i/(double)itemCount) +0.5, 0.0, 1.0)));
            shapes1.getChildren().add(item);            
            shapes[(int)i] = item;
            
            pathTransitions[i] = new PathTransition(Duration.seconds(1), p, item);
            pathTransitions[i].setOrientation(PathTransition.OrientationType.NONE);
            pathTransitions[i].setInterpolator(Interpolator.LINEAR);
            pathTransitions[i].play();
            pathTransitions[i].pause();
            
            Rectangle itemRev = new Rectangle();
            itemRev.setWidth(itemSize);
            itemRev.setHeight(itemSize);
            itemRev.setFill(Color.rgb(255, 0, 255, clamp( (i/(double)itemCount) -0.5, 0.0, 1.0)));
            shapes2.getChildren().add(itemRev);            
            shapes[(int)i] = itemRev;
            
            pathTransitionsRev[i] = new PathTransition(Duration.seconds(1), p, itemRev);
            pathTransitionsRev[i].setOrientation(PathTransition.OrientationType.NONE);
            pathTransitionsRev[i].setInterpolator(Interpolator.LINEAR);
            pathTransitionsRev[i].play();
            pathTransitionsRev[i].pause();
        }
        
        DoubleProperty pos = new SimpleDoubleProperty(0){
            @Override protected void invalidated() {
                for (int i=0; i <itemCount; i++) {
                    double itemPos =get()-(length*(i/(double)itemCount)) % 1;
                    if(itemPos < 0) itemPos = 1+itemPos;
                    pathTransitions[i].jumpTo(Duration.seconds(itemPos));
                    //pathTransitionsRev[i].jumpTo(Duration.seconds(itemPos));
                }
            }
        };
        
        DoubleProperty posRev = new SimpleDoubleProperty(0){
            @Override protected void invalidated() {
                for (int i=0; i <itemCount; i++) {
                    double itemPos =get()-(length*(i/(double)itemCount)) % 1;
                    if(itemPos < 0) itemPos = 1+itemPos;
                    pathTransitionsRev[i].jumpTo(Duration.seconds(itemPos));
                }
            }
        };
        
        Timeline t = new Timeline();
        t.getKeyFrames().addAll(
                new KeyFrame(Duration.ZERO, new KeyValue(pos, 0)),
                new KeyFrame(Duration.seconds(5), new KeyValue(pos, 1, Interpolator.LINEAR)),
                new KeyFrame(Duration.ZERO, new KeyValue(posRev, 1)),
                new KeyFrame(Duration.seconds(5), new KeyValue(posRev, 0, Interpolator.LINEAR))
        );
        t.setCycleCount(Timeline.INDEFINITE);
        t.play();
        
        stage.setScene(scene);
        stage.show();
    
    }
    
    public double clamp(double val, double min, double max) {
        if (val < min )
            return min;
        if (val > max)
            return max;
        return val;
    }
    
}