Created a canvas map class to fetch map image from google

- also added Bound class to encapsulate map boundary.
- created TestMapView and its controller just for testing.

#story[928]

src/main/java/seng302/models/map/Bound.java

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+package seng302.models.map;
+
+/**
+ * The Bound class is to represent square territorial bounds on a map. It contains
+ * four extremity double values(N, E, S, W). N and S are represented as latitudes
+ * in radians. E and W are represented as longitudes in radians.
+ *
+ * Created by Haoming on 10/5/17
+ */
+public class Bound {
+
+	private double north, east, south, west;
+
+	public Bound(double north, double east, double south, double west) {
+		this.north = north;
+		this.east = east;
+		this.south = south;
+		this.west = west;
+	}
+
+	public double getCentreLat() {
+		return (north + south) / 2;
+	}
+
+	public double getCentreLng() {
+		return (east + west) / 2;
+	}
+
+	public double getNorth() {
+		return north;
+	}
+
+	public double getEast() {
+		return east;
+	}
+
+	public double getSouth() {
+		return south;
+	}
+
+	public double getWest() {
+		return west;
+	}
+}

src/main/java/seng302/models/map/CanvasMap.java

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+package seng302.models.map;
+
+import javafx.scene.image.Image;
+
+import javax.imageio.ImageIO;
+import javax.net.ssl.HttpsURLConnection;
+import java.awt.image.BufferedImage;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.URL;
+
+public class CanvasMap {
+
+	private Bound bound;
+	private double width, height;  // desired image size
+	private int zoom;
+	private String KEY = "AIzaSyC-5oOShMCY5Oy_9L7guYMPUPFHDMr37wE";
+
+	public CanvasMap(Bound bound, double width, double height) {
+		this.bound = bound;
+		this.width = width;
+		this.height = height;
+	}
+
+	public Image getMapImage() {
+
+		try {
+			System.out.println(getRequest());
+			URL url = new URL(getRequest());
+			HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
+
+			return new Image(connection.getInputStream());
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	private String getRequest() {
+		zoom = 14;
+		StringBuilder sb = new StringBuilder();
+		sb.append("https://maps.googleapis.com/maps/api/staticmap?");
+		sb.append(String.format("center=%f,%f", bound.getCentreLat(), bound.getCentreLng()));
+		sb.append(String.format("&zoom=%d", zoom));
+		sb.append(String.format("&size=%.0fx%.0f&scale=2", width / 2, height / 2));
+		sb.append(String.format("&key=%s", KEY));
+		return sb.toString();
+	}
+}

src/main/java/seng302/models/map/TestMapController.java

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+package seng302.models.map;
+
+import javafx.fxml.FXML;
+import javafx.fxml.Initializable;
+import javafx.scene.canvas.Canvas;
+import javafx.scene.canvas.GraphicsContext;
+
+import java.net.URL;
+import java.util.ResourceBundle;
+
+public class TestMapController implements Initializable{
+
+	@FXML
+	private Canvas mapCanvas;
+
+	@Override
+	public void initialize(URL location, ResourceBundle resources) {
+		GraphicsContext gc = mapCanvas.getGraphicsContext2D();
+		Bound bound = new Bound(57.662943, 11.848501, 57.673945, 11.824966);
+		CanvasMap canvasMap = new CanvasMap(bound, 1280, 960);
+		gc.drawImage(canvasMap.getMapImage(), 0, 0, 1280, 960);
+	}
+}

src/main/resources/views/TestMapView.fxml

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+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.*?>
+<?import javafx.scene.layout.*?>
+<?import java.lang.*?>
+<?import javafx.scene.canvas.*?>
+
+
+<Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="960.0" prefWidth="1280.0" style="-fx-background-color: #ddd;" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="seng302.models.map.TestMapController">
+   <children>
+      <Canvas fx:id="mapCanvas" height="960.0" width="1280.0" />
+   </children>
+</Pane>