Java 2D graphics Study Notes (1)

Draw simple images
 

// draw Line2D.Doubleg2.draw(new Line2D.Double(x, y+rectHeight-1,                          x + rectWidth, y));

// draw Rectangle2D.Doubleg2.setStroke(stroke);g2.draw(new Rectangle2D.Double(x, y,                               rectWidth,                               rectHeight));

// draw RoundRectangle2D.Doubleg2.setStroke(dashed);g2.draw(new RoundRectangle2D.Double(x, y,                                   rectWidth,                                   rectHeight,                                   10, 10));

// draw Arc2D.Doubleg2.setStroke(wideStroke);g2.draw(new Arc2D.Double(x, y,                         rectWidth,                         rectHeight,                         90, 135,                         Arc2D.OPEN));

// draw Ellipse2D.Doubleg2.setStroke(stroke);g2.draw(new Ellipse2D.Double(x, y,                             rectWidth,                             rectHeight));

// draw GeneralPath (polygon)int x1Points[] = {x, x+rectWidth,                  x, x+rectWidth};int y1Points[] = {y, y+rectHeight,                  y+rectHeight, y};GeneralPath polygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,     x1Points.length);polygon.moveTo(x1Points[0], y1Points[0]);for (int index = 1;     index < x1Points.length;     index++) {        polygon.lineTo(x1Points[index],                       y1Points[index]);};polygon.closePath();g2.draw(polygon);

// draw GeneralPath (polyline)int x2Points[] = {x, x+rectWidth, x,                  x+rectWidth};int y2Points[] = {y, y+rectHeight,                  y+rectHeight, y};GeneralPath polyline = new         GeneralPath(GeneralPath.WIND_EVEN_ODD,                x2Points.length);polyline.moveTo (x2Points[0], y2Points[0]);for (int index = 1;     index < x2Points.length;     index++) {  polyline.lineTo(x2Points[index],         y2Points[index]);};g2.draw(polyline);

// fill Rectangle2D.Double (red)g2.setPaint(red);g2.fill(new Rectangle2D.Double(x, y,        rectWidth, rectHeight));

// fill RoundRectangle2D.Doubleg2.setPaint(redtowhite);g2.fill(new RoundRectangle2D.Double(x, y,                                   rectWidth,                                   rectHeight,                                   10, 10));

// fill Arc2Dg2.setPaint(red);g2.fill(new Arc2D.Double(x, y, rectWidth,                         rectHeight, 90,                         135, Arc2D.OPEN));

// fill Ellipse2D.Doubleg2.setPaint(redtowhite);g2.fill (new Ellipse2D.Double(x, y,                              rectWidth,                              rectHeight));

// Fill and stroke generalpathint x3points [] = {x, x + rectwidth, x, x + rectwidth}; int y3points [] = {Y, Y + rectheight, Y + rectheight, y}; generalpath filledpolygon = new generalpath (generalpath. wind_even_odd, x3points. length); filledpolygon. moveTo (x3points [0], y3points [0]); For (INT Index = 1; index <x3points. length; index ++) {filledpolygon. lineto (x3points [Index], y3points [Index]) ;}; filledpolygon. closepath (); g2.setpaint (red); g2.fill (filledpolygon );




Stroke
To put it simply, it is used to define the line width/line type.