mapcanvas.java

A part public bus simulation system, mainly about map design, java file, groupwork, helpful to the b

	 			g2.fillRect((int)x.getX()-gridSize/8,(int)x.getY()-gridSize/8,
	 					rectWidth,rectHeight);					
 			}
 		}
	 	
	 	//set color of temp bus route
	 	g2.setColor(C_TEMP_BUSROUTE);
	 	//draw temp bus route
	 	//check if tempBusRoute is null
	 	if (tempBusRoute!=null) {
	 		//tempBusRoute is not null
	 		if (tempBusRoute.getLength()==0) {
	 			//draw nothing as no points in bus route
	 			return;
	 		} else if (tempBusRoute.getLength()==1) {
	 			//draw a "dot" on the start Point
	 			x = tempBusRoute.getPoint(0);
	 			x = convertGridToScreen(x,LOC_CENTER);
	 			g2.fillRect((int)x.getX()-gridSize/8,(int)x.getY()-gridSize/8,
	 					gridSize/4,gridSize/4);
	 		} else {
	 			//busRoute.length >=2
	 			int rectHeight,rectWidth;
	 			for (int i=1;i<tempBusRoute.getLength();i++) {
	 				//draw line from point (i-1) to i
	 				x = tempBusRoute.getPoint(i);
	 				y = tempBusRoute.getPoint(i-1);
	 				//set x=top/left and y=bottom/right
	 				if (x.getX()>y.getX() || x.getY()<y.getY()) {
	 					//y is top left
	 					Point temp;
	 					temp=x;x=y;y=temp;
	 				}
	 				//calculate height and width of line(rect)
	 				if (x.getX()==y.getX()) {
	 					//vertical line
	 					rectHeight=gridSize*5/4;
	 					rectWidth=gridSize/4;
	 				} else {
	 					//horizontal line
	 					rectHeight=gridSize/4;
	 					rectWidth=gridSize*5/4;
	 				}
	 				x = convertGridToScreen(x,LOC_CENTER);
	 				g2.fillRect((int)x.getX()-gridSize/8,(int)x.getY()-gridSize/8,
	 						rectWidth,rectHeight);					
	 			}
	 		}
	 	}
	 }
	 
	 /*
	  * function to draw bus stop 1 at point pt
	  * a rect is drawn in the topright corner of the square
	  * occupying 1/4 grid in width and 2/3 grid in height
	  */
	 private void drawBusStop1(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_BUSSTOP);
	 	int x1,y1,width,height;
	 	
                x1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getX()+1;
	 	y1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getY()+1;
	 	
                g2.drawString("B.S1", x1, y1-2); 
	 }
	 
	 /*
	  * function to draw bus stop 2 at point pt
	  */
	 private void drawBusStop2(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_BUSSTOP);
	 	int x1,y1,width,height;
	 	
                x1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getX()+1;
	 	y1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getY()+1;
	 	
                g2.drawString("B.S2", x1, y1-2); 
	 }
	 /*
	  * function to drawRoad1 at point pt
	  * a square of color C_ROAD1 is drawn in the grid corresponding
	  */
	 private void drawRoad1(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
                Graphics g2 = g.create();
	 	g2.setColor(C_ROAD1);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
                 g2.drawString("NS_Road", x1, y1-2); 
   
         	Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize/4;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*3/7;
	 	width = gridSize*1/2;
	 	height = gridSize/7;
	 	g3.fillRect(x1,y1,width,height);
         }         
         
         
	 /*
	  * function to drawRoad2 at point pt
	  * a square of color C_ROAD2 is drawn in the grid corresponding
	  */
	 private void drawRoad2(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROAD2);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);
                g2.drawString("WE_Road", x1, y1-2); 
                
         	Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*3/7;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize/4;
	 	width = gridSize/7;
	 	height = gridSize/2;
	 	g3.fillRect(x1,y1,width,height);                
	 }         
         
	 /*
	  * function to drawRoad3 at point pt
	  * a square of color C_ROAD3 is drawn in the grid corresponding
	  */
	 private void drawRoad3(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROAD3);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
                g2.drawString("B.S1", x1, y1-2); 
                
                Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*3/7;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*2/3;
	 	width = gridSize/7;
	 	height = gridSize/3;
	 	g3.fillRect(x1,y1,width,height);
                
                Graphics g4 = g.create();
	 	g4.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX();
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*3/7;
	 	width = gridSize/3;
	 	height = gridSize/7;
	 	g4.fillRect(x1,y1,width,height);
         }         
         
	 /*
	  * function to drawRoad4 at point pt
	  * a square of color C_ROAD4 is drawn in the grid corresponding
	  */
	 private void drawRoad4(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROAD4);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
                
                Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*3/7;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY();
	 	width = gridSize/7;
	 	height = gridSize/3;
	 	g3.fillRect(x1,y1,width,height);
                
                Graphics g4 = g.create();
	 	g4.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX();
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*3/7;
	 	width = gridSize/3;
	 	height = gridSize/7;
	 	g4.fillRect(x1,y1,width,height);
	 }         
         
	 /*
	  * function to drawRoad5 at point pt
	  * a square of color C_ROAD5 is drawn in the grid corresponding
	  */
	 private void drawRoad5(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROAD5);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
                
                Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*3/7;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*2/3;
	 	width = gridSize/7;
	 	height = gridSize/3;
	 	g3.fillRect(x1,y1,width,height);
                
                Graphics g4 = g.create();
	 	g4.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*2/3;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*3/7;
	 	width = gridSize/3;
	 	height = gridSize/7;
	 	g4.fillRect(x1,y1,width,height);                
	 }       
         
	 /*
	  * function to drawRoad6 at point pt
	  * a square of color C_ROAD6 is drawn in the grid corresponding
	  * 
	  */
	 private void drawRoad6(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROAD6);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
                
                Graphics g3 = g.create();
	 	g3.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*3/7;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY();
	 	width = gridSize/7;
	 	height = gridSize/3;
	 	g3.fillRect(x1,y1,width,height);
                
                Graphics g4 = g.create();
	 	g4.setColor(Color.WHITE);
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+gridSize*2/3;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+gridSize*3/7;
	 	width = gridSize/3;
	 	height = gridSize/7;
	 	g4.fillRect(x1,y1,width,height);                    
	 }          
         
	 /*
	  * function to drawRoadJunction at point pt
	  * a square of color C_ROADJUNCTION is drawn in the grid corresponding
	  */
	 private void drawRoadJunction(Graphics g,Point pt) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_ROADJUNCTION);
	 	int x1,y1,width,height;
	 	x1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getX()+1;
	 	y1=(int) convertGridToScreen(pt,LOC_TOPLEFT).getY()+1;
	 	width = gridSize-1;
	 	height = gridSize-1;
	 	g2.fillRect(x1,y1,width,height);	
	 }         
	 /*
	  * function to draw Grid of map
	  */
	 private void drawGrid(Graphics g) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2= g.create();

	 	//calculate offset to center canvas if canvas is smaller then
	 	//scrollPane
	 	offsetX = (getWidth()-drawingWidth)/2;
	 	if (offsetX<0) {
	 		offsetX=0;
	 	}
	 	offsetY = (getHeight()-drawingHeight)/2;
	 	if (offsetY<0) {
	 		offsetX=0;
	 	}	
	 	
	 	g2.translate(offsetX,offsetY);
	 	g2.setColor(C_BACKGROUD);
	 	
	 	//draw grid background
	 	g2.fillRect(0,0,drawingWidth,drawingHeight);
	 	
	 	//draw gridline
	 	g2.setColor(C_GRIDLINE);
	 	//draw vertical line
	 	for (int x=1;x<mapSizeX;x++) { 
	 		g2.drawLine(x*gridSize,0,x*gridSize,drawingHeight);
	 	}
	 	//draw horizontal line
	 	for (int y=1;y<mapSizeY;y++) {
	 		g2.drawLine(0,y*gridSize,drawingWidth,y*gridSize);
	 	}		
	 }
	 
	 /*
	  * function to draw selected at point pt
	  * a hollow square of color C_SELECTED is drawn in the grid corresponding
	  * to the location of the selected point
	  */
	 //draw a box around selected item
	 private void drawSelected(Graphics g) {
	 	//create new graphics object so as not to mess with original graphics
	 	Graphics g2 = g.create();
	 	g2.setColor(C_SELECTED);

	 	//check if it's in bus route mode
	 	if (mode==BUSROUTE) {
	 		//don't draw selected
	 		return;
	 	}
	 	int height,width,x1,y1;
	 	Point x,y;
	 	Tools t = mapData.getSelected();
	 	//check to see is point is selected
	 	if (selectedPoint!=null) {
	 		//draw box at selected point instead
	 		x = convertGridToScreen(selectedPoint,LOC_TOPLEFT);
	 		width = gridSize;
	 		height = gridSize;
	 	//check if there is a selected object
	 	} else if (t!=null) {
		 	//check if it's pt or area tools
		 	if (t instanceof AreaTools) {
		 		//area tool, get top left and bottom right coordinate
		 		AreaTools t2 = (AreaTools) t;
		 		Point pt1 =t2.getLocation1();
		 		Point pt2 =t2.getLocation2();
		 		if (pt1.getY()>pt2.getY() || pt1.getX()<pt2.getX()) {
		 			//pt1 is at top left
		 			x = convertGridToScreen(pt1,LOC_TOPLEFT);
		 			y = convertGridToScreen(pt2,LOC_BOTTOMRIGHT);
		 		} else {
		 			//pt2 is at top left
		 			x = convertGridToScreen(pt2,LOC_TOPLEFT);
		 			y = convertGridToScreen(pt1,LOC_BOTTOMRIGHT);
		 		}
		 		height = (int) (y.getY()-x.getY());
		 		width = (int) (y.getX()-x.getX());
		 	} else {
		 		//pt tool, get top left and draw a magenta box surrounding the object
		 		PtTools t2 = (PtTools) t;
		 		x = convertGridToScreen(t2.getLocation(),LOC_TOPLEFT);
		 		width = gridSize;
		 		height = gridSize;
		 	}
	 	} else return;
	 	x1 = (int) x.getX();
	 	y1 = (int) x.getY();
	 	g2.drawRect(x1,y1,width,height);
	 }
 
	 /*
	  * function to draw traffic light at point pt
	  * 
	  */
	 private void drawTrafficLight(Graphics g,Point pt) {
	 	Graphics g2 = g.create();
	 	int x1,y1,width,height;
	 	//width = height = gridSize*2/9;
	 	x1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getX()+1;
	 	y1=(int)convertGridToScreen(pt,LOC_BOTTOMLEFT).getY()+1; 	
	 	g2.setColor(Color.GREEN);	 	
                g2.drawString("T.L", x1, y1-2); 
	 }
	 
	 /*
	  * returns gridSize of mapCanvas
	  */
	 public int getGridSize() {
	 	return gridSize;
	 }

	 /*
	  * returns mapHeight of mapCanvas
	  */
	 public int getMapSizeY() {
	 	return mapSizeY;
	 }
	 
	 /*
	  * returns mapWidth of mapCanvas
	  */
	 public int getMapSizeX() {
	 	return mapSizeX;
	 }
	 
	 /*
	  * function to return where the bottom left coordinates of where
	  * the drawing takes place. Can be visualize as the bottom left coordinate
	  * of point (0,0) [grid coordinate]. Coordinates returned in in screen
	  * coordinates
	  */
	 private Point getOrigin() {
	 	return new Point(offsetX,offsetY+drawingHeight);
	 }

	 /*
	  * return start index of grid coordinates
	  * start index corresponding to the what number is the
	  * first reference point, ie, (0,0) or (1,1)
	  */
	 public int getStartIndex() {
	 	return startIndex;
	 }
	 
	 /*
	  * function to initialize the mapCanvas 
	  */
	 private void initialize(int mapSizeX,int mapSizeY,int gridSize) {
	 	//set members of mapCanvas
	 	this.mapSizeY=mapSizeY;
	 	this.mapSizeX=mapSizeX;
	 	this.gridSize=gridSize;
	 	drawingHeight=mapSizeY*gridSize;
	 	drawingWidth=mapSizeX*gridSize;
	 	offsetX=0;
	 	offsetY=0;
	 	startIndex=0;
	 	
	 	//add mouse listerner
	 	addMouseListener(this);
	 	addMouseMotionListener(this);
	 	
	 	//set preferred size of mapCanvas
	 	this.setPreferredSize(new Dimension(drawingWidth,drawingHeight));		
	 }
	 
	 /*
	  * function called automatically when user clicks on the mouse
	  * depending on current mode of operation, corresponding function
	  * is called 
	  */
	 public void mouseClicked(MouseEvent arg0) {
	 	//set pointClicked to the coordinates of grid