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Party-Parrots-At-Sea/src/main/java/seng302/controllers/CanvasController.java
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package seng302.controllers;
import javafx.animation.*;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.fxml.FXML;
import javafx.geometry.Point2D;
import javafx.scene.Group;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import seng302.models.Boat;
import seng302.models.BoatGroup;
import seng302.models.Colors;
import seng302.models.RaceObject;
import seng302.models.mark.*;
import seng302.models.parsers.StreamParser;
import seng302.models.parsers.packets.BoatPositionPacket;
import seng302.models.parsers.XMLParser;
import seng302.models.parsers.XMLParser.RaceXMLObject.CompoundMark;
import seng302.models.parsers.XMLParser.RaceXMLObject.Limit;
import seng302.models.mark.Mark;
import java.text.DecimalFormat;
import java.util.*;
import java.util.concurrent.PriorityBlockingQueue;
/**
* Created by ptg19 on 15/03/17.
* Modified by Haoming Yin (hyi25) on 20/3/2017.
*/
public class CanvasController {
@FXML
private AnchorPane canvasPane;
private RaceViewController raceViewController;
private ResizableCanvas canvas;
private Group group;
private GraphicsContext gc;
private final int MARK_SIZE = 10;
private final int BUFFER_SIZE = 50;
private final int CANVAS_WIDTH = 1000;
private final int CANVAS_HEIGHT = 1000;
private final int LHS_BUFFER = BUFFER_SIZE;
private final int RHS_BUFFER = BUFFER_SIZE + MARK_SIZE / 2;
private final int TOP_BUFFER = BUFFER_SIZE;
private final int BOT_BUFFER = TOP_BUFFER + MARK_SIZE / 2;
private double distanceScaleFactor;
private ScaleDirection scaleDirection;
private Mark minLatPoint;
private Mark minLonPoint;
private Mark maxLatPoint;
private Mark maxLonPoint;
private double referencePointX;
private double referencePointY;
private double metersToPixels;
private List<RaceObject> raceObjects = new ArrayList<>();
private List<Mark> raceMarks = new ArrayList<>();
//FRAME RATE
private static final double UPDATE_TIME = 0.016666; // 1 / 60 ie 60fps
private final long[] frameTimes = new long[30];
private int frameTimeIndex = 0;
private boolean arrayFilled = false;
private DecimalFormat decimalFormat2dp = new DecimalFormat("0.00");
public AnimationTimer timer;
private enum ScaleDirection {
HORIZONTAL,
VERTICAL
}
public void setup(RaceViewController raceViewController){
this.raceViewController = raceViewController;
}
public void initialize() {
raceViewController = new RaceViewController();
canvas = new ResizableCanvas();
group = new Group();
canvasPane.getChildren().add(canvas);
canvasPane.getChildren().add(group);
// Bind canvas size to stack pane size.
canvas.widthProperty().bind(new SimpleDoubleProperty(CANVAS_WIDTH));
canvas.heightProperty().bind(new SimpleDoubleProperty(CANVAS_HEIGHT));
//group.minWidth(CANVAS_WIDTH);
//group.minHeight(CANVAS_HEIGHT);
}
public void initializeCanvas (){
gc = canvas.getGraphicsContext2D();
gc.save();
gc.setFill(Color.SKYBLUE);
gc.fillRect(0,0, CANVAS_WIDTH, CANVAS_HEIGHT);
gc.restore();
fitMarksToCanvas();
// TODO: 1/05/17 wmu16 - Change this call to now draw the marks as from the xml
drawBoats();
timer = new AnimationTimer() {
@Override
public void handle(long now) {
//fps stuff
long oldFrameTime = frameTimes[frameTimeIndex] ;
frameTimes[frameTimeIndex] = now ;
frameTimeIndex = (frameTimeIndex + 1) % frameTimes.length ;
if (frameTimeIndex == 0) {
arrayFilled = true ;
}
long elapsedNanos;
if (arrayFilled) {
elapsedNanos = now - oldFrameTime ;
long elapsedNanosPerFrame = elapsedNanos / frameTimes.length ;
Double frameRate = 1_000_000_000.0 / elapsedNanosPerFrame ;
drawFps(frameRate.intValue());
}
// TODO: 1/05/17 cir27 - Make the RaceObjects update on the actual delay.
elapsedNanos = 1000 / 60;
updateRaceObjects();
}
};
for (Mark m : raceViewController.getRace().getCourse()) {
System.out.println(m.getName());
}
//timer.start();
}
/**
* Adds border marks to the canvas, taken from the XML file
*
* NOTE: This is quite confusing as objects are grabbed from the XMLParser such as Mark and CompoundMark which are
* named the same as those in the model package but are, however not the same, so they do not have things such as
* a type and must be derived from the number of marks in a compound mark etc..
*/
private void addRaceBorder() {
XMLParser.RaceXMLObject raceXMLObject = StreamParser.getXmlObject().getRaceXML();
ArrayList<Limit> courseLimits = raceXMLObject.getCourseLimit();
gc.setStroke(Color.DARKRED);
gc.setLineWidth(3);
for (int i = 0; i < courseLimits.size() - 1; i++) {
Limit thisPoint1 = courseLimits.get(i);
SingleMark thisMark1 = new SingleMark("", thisPoint1.getLat(), thisPoint1.getLng(), thisPoint1.getSeqID());
Limit thisPoint2 = courseLimits.get(i+1);
SingleMark thisMark2 = new SingleMark("", thisPoint2.getLat(), thisPoint2.getLng(), thisPoint2.getSeqID());
Point2D borderPoint1 = findScaledXY(thisMark1);
Point2D borderPoint2 = findScaledXY(thisMark2);
gc.strokeLine(borderPoint1.getX(), borderPoint1.getY(),
borderPoint2.getX(), borderPoint2.getY());
}
Limit thisPoint1 = courseLimits.get(courseLimits.size()-1);
SingleMark thisMark1 = new SingleMark("", thisPoint1.getLat(), thisPoint1.getLng(), thisPoint1.getSeqID());
Limit thisPoint2 = courseLimits.get(0);
SingleMark thisMark2 = new SingleMark("", thisPoint2.getLat(), thisPoint2.getLng(), thisPoint2.getSeqID());
Point2D borderPoint1 = findScaledXY(thisMark1);
Point2D borderPoint2 = findScaledXY(thisMark2);
gc.strokeLine(borderPoint1.getX(), borderPoint1.getY(),
borderPoint2.getX(), borderPoint2.getY());
}
/**
* Adds the course marks to the canvas, taken from the XMl file
*
* NOTE: This is quite confusing as objects are grabbed from the XMLParser such as Mark and CompoundMark which are
* named the same as those in the model package but are, however not the same, so they do not have things such as
* a type and must be derived from the number of marks in a compound mark etc..
*/
private void addCourseMarks() {
XMLParser.RaceXMLObject raceXMLObject = StreamParser.getXmlObject().getRaceXML();
ArrayList<CompoundMark> compoundMarks = raceXMLObject.getCompoundMarks();
RaceObject markGroup;
for (CompoundMark compoundMark : compoundMarks) {
//If the compound mark has 2 marks then its a gate mark
if (compoundMark.getMarks().size() == 2) {
CompoundMark.Mark mark1 = compoundMark.getMarks().get(0);
CompoundMark.Mark mark2 = compoundMark.getMarks().get(1);
SingleMark singleMark1 = new SingleMark(mark1.getMarkName(), mark1.getTargetLat(), mark1.getTargetLng(), mark1.getSourceID());
SingleMark singleMark2 = new SingleMark(mark1.getMarkName(), mark2.getTargetLat(), mark2.getTargetLng(), mark2.getSourceID());
GateMark thisGateMark = new GateMark(compoundMark.getcMarkName(),
(compoundMark.getMarkID().equals(1)) ? MarkType.OPEN_GATE : MarkType.CLOSED_GATE,
singleMark1,
singleMark2,
singleMark1.getLatitude(),
singleMark1.getLongitude());
markGroup = new MarkGroup(thisGateMark,
findScaledXY(thisGateMark.getSingleMark1()),
findScaledXY(thisGateMark.getSingleMark2()));
raceObjects.add(markGroup);
raceMarks.add(thisGateMark);
//Otherwise its a single mark
} else {
CompoundMark.Mark singleMark = compoundMark.getMarks().get(0);
Mark thisSingleMark = new SingleMark(singleMark.getMarkName(),
singleMark.getTargetLat(),
singleMark.getTargetLng(),
singleMark.getSourceID());
markGroup = new MarkGroup(thisSingleMark, findScaledXY(thisSingleMark));
raceObjects.add(markGroup);
raceMarks.add(thisSingleMark);
}
}
}
private void updateRaceObjects(){
for (RaceObject raceObject : raceObjects) {
raceObject.updatePosition(1000 / 60);
// some raceObjects will have multiply ID's (for instance gate marks)
for (long id : raceObject.getRaceIds()) {
//checking if the current "ID" has any updates associated with it
if (StreamParser.boatPositions.containsKey(id)) {
move(id, raceObject);
}
}
}
}
private void move(long id, RaceObject raceObject){
PriorityBlockingQueue<BoatPositionPacket> movementQueue = StreamParser.boatPositions.get(id);
if (movementQueue.size() > 0){
BoatPositionPacket positionPacket = movementQueue.peek();
//this code adds a delay to reading from the movementQueue
//in case things being put into the movement queue are slightly
//out of order
int delayTime = 1000;
int loopTime = delayTime * 10;
long timeDiff = (System.currentTimeMillis()%loopTime - positionPacket.getTimeValid()%loopTime);
if (timeDiff < 0){
timeDiff = loopTime + timeDiff;
}
if (timeDiff > delayTime) {
try {
positionPacket = movementQueue.take();
Point2D p2d = latLonToXY(positionPacket.getLat(), positionPacket.getLon());
double heading = 360.0 / 0xffff * positionPacket.getHeading();
raceObject.setDestination(p2d.getX(), p2d.getY(), heading, positionPacket.getGroundSpeed(), (int) id);
} catch (InterruptedException e){
e.printStackTrace();
}
}
}
}
class ResizableCanvas extends Canvas {
ResizableCanvas() {
// Redraw canvas when size changes.
widthProperty().addListener(evt -> draw());
heightProperty().addListener(evt -> draw());
}
private void draw() {
double width = getWidth();
double height = getHeight();
GraphicsContext gc = getGraphicsContext2D();
gc.clearRect(0, 0, width, height);
}
@Override
public boolean isResizable() {
return true;
}
@Override
public double prefWidth(double height) {
return getWidth();
}
@Override
public double prefHeight(double width) {
return getHeight();
}
}
private void drawFps(int fps){
if (raceViewController.isDisplayFps()){
gc.clearRect(5,5,50,20);
gc.setFill(Color.BLACK);
gc.setFont(new Font(14));
gc.setLineWidth(3);
gc.fillText(fps + " FPS", 5, 20);
} else {
gc.clearRect(5,5,50,20);
gc.setFill(Color.SKYBLUE);
gc.fillRect(4,4,51,21);
}
}
/**
* Draws all the boats.
*/
private void drawBoats() {
// Map<Boat, TimelineInfo> timelineInfos = raceViewController.getTimelineInfos();
List<Boat> boats = raceViewController.getStartingBoats();
Double startingX = raceObjects.get(0).getLayoutX();
Double startingY = raceObjects.get(0).getLayoutY();
Group boatAnnotations = new Group();
for (Boat boat : boats) {
BoatGroup boatGroup = new BoatGroup(boat, Colors.getColor());
boatGroup.moveTo(startingX, startingY, 0d);
boatGroup.forceRotation();
raceObjects.add(boatGroup);
boatAnnotations.getChildren().add(boatGroup.getLowPriorityAnnotations());
}
group.getChildren().add(boatAnnotations);
group.getChildren().addAll(raceObjects);
}
/**
* Calculates x and y location for every marker that fits it to the canvas the race will be drawn on.
*/
private void fitMarksToCanvas() {
findMinMaxPoint();
double minLonToMaxLon = scaleRaceExtremities();
calculateReferencePointLocation(minLonToMaxLon);
givePointsXY();
addRaceBorder();
findMetersToPixels();
}
/**
* Sets the class variables minLatPoint, maxLatPoint, minLonPoint, maxLonPoint to the marker with the leftmost
* marker, rightmost marker, southern most marker and northern most marker respectively.
*/
private void findMinMaxPoint() {
List<Limit> sortedPoints = new ArrayList<>();
for (Limit limit : StreamParser.getXmlObject().getRaceXML().getCourseLimit()) {
sortedPoints.add(limit);
}
sortedPoints.sort(Comparator.comparingDouble(Limit::getLat));
Limit minLatMark = sortedPoints.get(0);
Limit maxLatMark = sortedPoints.get(sortedPoints.size()-1);
minLatPoint = new SingleMark(minLatMark.toString(), minLatMark.getLat(), minLatMark.getLng(), minLatMark.getSeqID());
maxLatPoint = new SingleMark(maxLatMark.toString(), maxLatMark.getLat(), maxLatMark.getLng(), maxLatMark.getSeqID());
sortedPoints.sort(Comparator.comparingDouble(Limit::getLng));
//If the course is on a point on the earth where longitudes wrap around.
Limit minLonMark = sortedPoints.get(0);
Limit maxLonMark = sortedPoints.get(sortedPoints.size()-1);
SingleMark thisMinLon = new SingleMark(minLonMark.toString(), minLonMark.getLat(), minLonMark.getLng(), minLonMark.getSeqID());
SingleMark thisMaxLon = new SingleMark(maxLonMark.toString(), maxLonMark.getLat(), maxLonMark.getLng(), maxLonMark.getSeqID());
// TODO: 30/03/17 cir27 - Correctly account for longitude wrapping around.
if (thisMaxLon.getLongitude() - thisMinLon.getLongitude() > 180) {
SingleMark temp = thisMinLon;
thisMinLon = thisMaxLon;
thisMaxLon = temp;
}
minLonPoint = thisMinLon;
maxLonPoint = thisMaxLon;
}
/**
* Calculates the location of a reference point, this is always the point with minimum latitude, in relation to the
* canvas.
*
* @param minLonToMaxLon The horizontal distance between the point of minimum longitude to maximum longitude.
*/
private void calculateReferencePointLocation (double minLonToMaxLon) {
Mark referencePoint = minLatPoint;
double referenceAngle;
if (scaleDirection == ScaleDirection.HORIZONTAL) {
referenceAngle = Math.abs(Mark.calculateHeadingRad(referencePoint, minLonPoint));
referencePointX = LHS_BUFFER + distanceScaleFactor * Math.sin(referenceAngle) * Mark.calculateDistance(referencePoint, minLonPoint);
referenceAngle = Math.abs(Mark.calculateHeadingRad(referencePoint, maxLatPoint));
referencePointY = CANVAS_HEIGHT - (TOP_BUFFER + BOT_BUFFER);
referencePointY -= distanceScaleFactor * Math.cos(referenceAngle) * Mark.calculateDistance(referencePoint, maxLatPoint);
referencePointY = referencePointY / 2;
referencePointY += TOP_BUFFER;
referencePointY += distanceScaleFactor * Math.cos(referenceAngle) * Mark.calculateDistance(referencePoint, maxLatPoint);
} else {
referencePointY = CANVAS_HEIGHT - BOT_BUFFER;
referenceAngle = Math.abs(Mark.calculateHeadingRad(referencePoint, minLonPoint));
referencePointX = LHS_BUFFER;
referencePointX += distanceScaleFactor * Math.sin(referenceAngle) * Mark.calculateDistance(referencePoint, minLonPoint);
referencePointX += ((CANVAS_WIDTH - (LHS_BUFFER + RHS_BUFFER)) - (minLonToMaxLon * distanceScaleFactor)) / 2;
}
}
/**
* Finds the scale factor necessary to fit all race markers within the onscreen map and assigns it to distanceScaleFactor
* Returns the max horizontal distance of the map.
*/
private double scaleRaceExtremities () {
double vertAngle = Math.abs(Mark.calculateHeadingRad(minLatPoint, maxLatPoint));
double vertDistance = Math.cos(vertAngle) * Mark.calculateDistance(minLatPoint, maxLatPoint);
double horiAngle = Mark.calculateHeadingRad(minLonPoint, maxLonPoint);
if (horiAngle <= (Math.PI / 2))
horiAngle = (Math.PI / 2) - horiAngle;
else
horiAngle = horiAngle - (Math.PI / 2);
double horiDistance = Math.cos(horiAngle) * Mark.calculateDistance(minLonPoint, maxLonPoint);
double vertScale = (CANVAS_HEIGHT - (TOP_BUFFER + BOT_BUFFER)) / vertDistance;
if ((horiDistance * vertScale) > (CANVAS_WIDTH - (RHS_BUFFER + LHS_BUFFER))) {
distanceScaleFactor = (CANVAS_WIDTH - (RHS_BUFFER + LHS_BUFFER)) / horiDistance;
scaleDirection = ScaleDirection.HORIZONTAL;
} else {
distanceScaleFactor = vertScale;
scaleDirection = ScaleDirection.VERTICAL;
}
return horiDistance;
}
/**
* Give all markers in the course an x,y location relative to a given reference with a known x,y location. Distances
* are scaled according to the distanceScaleFactor variable.
*/
private void givePointsXY() {
List<Mark> allPoints = new ArrayList<>(raceViewController.getRace().getCourse());
List<Mark> processed = new ArrayList<>();
RaceObject markGroup;
for (Mark mark : allPoints) {
if (!processed.contains(mark)) {
if (mark.getMarkType() != MarkType.SINGLE_MARK) {
GateMark gateMark = (GateMark) mark;
markGroup = new MarkGroup(mark, findScaledXY(gateMark.getSingleMark1()), findScaledXY(gateMark.getSingleMark2()));
raceObjects.add(markGroup);
} else {
markGroup = new MarkGroup(mark, findScaledXY(mark));
raceObjects.add(markGroup);
}
processed.add(mark);
}
}
}
private Point2D findScaledXY (Mark unscaled) {
return findScaledXY (minLatPoint.getLatitude(), minLatPoint.getLongitude(),
unscaled.getLatitude(), unscaled.getLongitude());
}
private Point2D findScaledXY (double latA, double lonA, double latB, double lonB) {
double distanceFromReference;
double angleFromReference;
int xAxisLocation = (int) referencePointX;
int yAxisLocation = (int) referencePointY;
angleFromReference = Mark.calculateHeadingRad(latA, lonA, latB, lonB);
distanceFromReference = Mark.calculateDistance(latA, lonA, latB, lonB);
if (angleFromReference >= 0 && angleFromReference <= Math.PI / 2) {
xAxisLocation += (int) Math.round(distanceScaleFactor * Math.sin(angleFromReference) * distanceFromReference);
yAxisLocation -= (int) Math.round(distanceScaleFactor * Math.cos(angleFromReference) * distanceFromReference);
} else if (angleFromReference >= 0) {
angleFromReference = angleFromReference - Math.PI / 2;
xAxisLocation += (int) Math.round(distanceScaleFactor * Math.cos(angleFromReference) * distanceFromReference);
yAxisLocation += (int) Math.round(distanceScaleFactor * Math.sin(angleFromReference) * distanceFromReference);
} else if (angleFromReference < 0 && angleFromReference >= -Math.PI / 2) {
angleFromReference = Math.abs(angleFromReference);
xAxisLocation -= (int) Math.round(distanceScaleFactor * Math.sin(angleFromReference) * distanceFromReference);
yAxisLocation -= (int) Math.round(distanceScaleFactor * Math.cos(angleFromReference) * distanceFromReference);
} else {
angleFromReference = Math.abs(angleFromReference) - Math.PI / 2;
xAxisLocation -= (int) Math.round(distanceScaleFactor * Math.cos(angleFromReference) * distanceFromReference);
yAxisLocation += (int) Math.round(distanceScaleFactor * Math.sin(angleFromReference) * distanceFromReference);
}
return new Point2D(xAxisLocation, yAxisLocation);
}
/**
* Find the number of meters per pixel.
*/
private void findMetersToPixels () {
Double angularDistance;
Double angle;
Double straightLineDistance;
if (scaleDirection == ScaleDirection.HORIZONTAL) {
angularDistance = Mark.calculateDistance(minLonPoint, maxLonPoint);
angle = Mark.calculateHeadingRad(minLonPoint, maxLonPoint);
if (angle > Math.PI / 2) {
straightLineDistance = Math.cos(angle - Math.PI) * angularDistance;
} else {
straightLineDistance = Math.cos(angle) * angularDistance;
}
metersToPixels = (CANVAS_WIDTH - RHS_BUFFER - LHS_BUFFER) / straightLineDistance;
} else {
angularDistance = Mark.calculateDistance(minLatPoint, maxLatPoint);
angle = Mark.calculateHeadingRad(minLatPoint, maxLatPoint);
if (angle < Math.PI / 2) {
straightLineDistance = Math.cos(angle) * angularDistance;
} else {
straightLineDistance = Math.cos(-angle + Math.PI * 2) * angularDistance;
}
metersToPixels = (CANVAS_HEIGHT - TOP_BUFFER - BOT_BUFFER) / straightLineDistance;
}
}
private Point2D latLonToXY (double latitude, double longitude) {
return findScaledXY(minLatPoint.getLatitude(), minLatPoint.getLongitude(), latitude, longitude);
}
List<RaceObject> getRaceObjects() {
return raceObjects;
}
}
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