Khronos.java

package com.primer.accidentanimation;
 
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
 
public class Khronos {
 
    private Date startDate;
    private Date endDate;
    private Date eventDate;
    private int fps;
    private long numberFrames;
    private long startMS;
    private long endMS;
    private long totalMS;
    private long eventMS;
    private long totalAnimationMS;
    private DateFormat formatter;
 
    public Khronos() {
        formatter = new SimpleDateFormat("dd/MM/yyyy HH:mm");
    }
 
    public void setup(int minutes, int fps) {
        this.fps = fps;
        numberFrames = minutes * fps * 60;
        totalAnimationMS = minutes * 60 * 1000;
    }
 
    public long getNumberOfFrames() {
        return numberFrames;
    }
 
    //Format: '01/01/2010 01:55'
    public void setKhronosStart(String dateTime) throws ParseException {
        startDate = (Date) formatter.parse(dateTime);
        startMS = startDate.getTime();
        if (endMS > 0) {
            totalMS = endMS - startMS;
        }
 
    }
 
    //Format: '01/01/2010 01:55'
    public void setKhronosEnd(String dateTime) throws ParseException {
        endDate = (Date) formatter.parse(dateTime);
        endMS = endDate.getTime();
        if (startMS > 0) {
            totalMS = endMS - startMS;
        }
 
    }
 
    //Format: '01/01/2010 01:55'
    public int getFrameIndex(String eventDateTime) throws ParseException {
        eventDate = (Date) formatter.parse(eventDateTime);
        eventMS = eventDate.getTime() - startMS;
        long animationEventMS = (totalAnimationMS * eventMS) / totalMS;
        float frm = ((float) animationEventMS / (float) 1000) * fps;
        int frameNumber = (int) frm;
        frameNumber = (frameNumber > 0) ? frameNumber : 1;
        return frameNumber;
    }
}