{"id":10404,"date":"2015-08-28T00:00:54","date_gmt":"2015-08-28T04:00:54","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=10404"},"modified":"2015-08-24T09:59:36","modified_gmt":"2015-08-24T13:59:36","slug":"illustrates-the-effect-of-different-transparency","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=10404","title":{"rendered":"Illustrates the effect of different transparency"},"content":{"rendered":"<pre>~~~~~~~~~~~~~~~~~~~\r\nTransparencyExample.java Illustrates the effect of different transparency (alpha) values when drawing a shape.\r\n~~~~~~~~~~~~~~~~~~~\r\nimport javax.swing.*;\r\nimport java.awt.*;\r\nimport java.awt.geom.*;\r\n\r\n\/** An illustration of the use of AlphaComposite to make\r\n\u00a0*\u00a0 partially transparent drawings.\r\n\u00a0*\r\n\u00a0**********************************\r\n\r\npublic class TransparencyExample extends JPanel {\r\n\u00a0 private static int gap=10, width=60, offset=20,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 deltaX=gap+width+offset;\r\n\u00a0 private Rectangle\r\n\u00a0\u00a0\u00a0 blueSquare = new Rectangle(gap+offset, gap+offset, width,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 width),\r\n\u00a0\u00a0\u00a0 redSquare = new Rectangle(gap, gap, width, width);\r\n\r\n\u00a0 private AlphaComposite makeComposite(float alpha) {\r\n\u00a0\u00a0\u00a0 int type = AlphaComposite.SRC_OVER;\r\n\u00a0\u00a0\u00a0 return(AlphaComposite.getInstance(type, alpha));\r\n\u00a0 }\r\n\r\n\u00a0 private void drawSquares(Graphics2D g2d, float alpha) {\r\n\u00a0\u00a0\u00a0 Composite originalComposite = g2d.getComposite();\r\n\u00a0\u00a0\u00a0 g2d.setPaint(Color.blue);\r\n\u00a0\u00a0\u00a0 g2d.fill(blueSquare);\r\n\u00a0\u00a0\u00a0 g2d.setComposite(makeComposite(alpha));\r\n\u00a0\u00a0\u00a0 g2d.setPaint(Color.red);\r\n\u00a0\u00a0\u00a0 g2d.fill(redSquare);\r\n\u00a0\u00a0\u00a0 g2d.setComposite(originalComposite);\r\n\u00a0 }\r\n\r\n\u00a0 public void paintComponent(Graphics g) {\r\n\u00a0\u00a0\u00a0 super.paintComponent(g);\r\n\u00a0\u00a0\u00a0 Graphics2D g2d = (Graphics2D)g;\r\n\u00a0\u00a0\u00a0 for(int i=0; i&lt;11; i++) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0 drawSquares(g2d, i*0.1F);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0 g2d.translate(deltaX, 0);\r\n\u00a0\u00a0\u00a0 }\r\n\u00a0 }\r\n\r\n\u00a0 public static void main(String[] args) {\r\n\u00a0\u00a0\u00a0 String title = \"Transparency example: alpha of the top \" +\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"(red) square ranges from 0.0 at the left \" +\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"to 1.0 at the right. Bottom (blue) square \" + \r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"is opaque.\";\r\n\u00a0\u00a0\u00a0 WindowUtilities.openInJFrame(new TransparencyExample(),\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 11*deltaX + 2*gap,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 deltaX + 3*gap,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 title, Color.lightGray);\r\n\u00a0 }\r\n}\r\n&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>~~~~~~~~~~~~~~~~~~~ TransparencyExample.java Illustrates the effect of different transparency (alpha) values when drawing a shape. ~~~~~~~~~~~~~~~~~~~ import javax.swing.*; import java.awt.*; import java.awt.geom.*; \/** An illustration of the use of AlphaComposite to make \u00a0*\u00a0 partially transparent drawings. \u00a0* \u00a0********************************** public class TransparencyExample extends JPanel { \u00a0 private static int gap=10, width=60, offset=20, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 deltaX=gap+width+offset; \u00a0 private Rectangle &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=10404\">Continue reading<\/a><\/p>\n","protected":false},"author":130,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1417,1424],"tags":[706,308,285],"class_list":["post-10404","post","type-post","status-publish","format-standard","hentry","category-code-programming-samples--","category-javaj2eej2me","tag-code","tag-java","tag-285","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":26882,"url":"http:\/\/bangla.sitestree.com\/?p=26882","url_meta":{"origin":10404,"position":0},"title":"Illustrates the effect of different transparency #Programming Code Examples #Java\/J2EE\/J2ME #Drawing","author":"Author-Check- Article-or-Video","date":"May 4, 2021","format":false,"excerpt":"~~~~~~~~~~~~~~~~~~~ TransparencyExample.java Illustrates the effect of different transparency (alpha) values when drawing a shape. ~~~~~~~~~~~~~~~~~~~ import javax.swing.*; import java.awt.*; import java.awt.geom.*; \/** An illustration of the use of AlphaComposite to make * partially transparent drawings. * ********************************** public class TransparencyExample extends JPanel { private static int gap=10, width=60, offset=20, deltaX=gap+width+offset;\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10417,"url":"http:\/\/bangla.sitestree.com\/?p=10417","url_meta":{"origin":10404,"position":1},"title":"ShearExample.java. Illustrates the effect of applying a shear transformation prior to drawing a square","author":"","date":"August 28, 2015","format":false,"excerpt":"import javax.swing.*; import java.awt.*; import java.awt.geom.*; \/** An example of shear transformations on a rectangle. \u00a0* \u00a0*********************** public class ShearExample extends JPanel { \u00a0 private static int gap=10, width=100; \u00a0 private Rectangle rect = new Rectangle(gap, gap, 100, 100); \u00a0 public void paintComponent(Graphics g) { \u00a0\u00a0\u00a0 super.paintComponent(g); \u00a0\u00a0\u00a0 Graphics2D g2d\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26894,"url":"http:\/\/bangla.sitestree.com\/?p=26894","url_meta":{"origin":10404,"position":2},"title":"ShearExample.java. Illustrates the effect of applying a shear transformation prior to drawing a square #Programming Code Examples #Java\/J2EE\/J2ME #Drawing","author":"Author-Check- Article-or-Video","date":"May 4, 2021","format":false,"excerpt":"import javax.swing.*; import java.awt.*; import java.awt.geom.*; \/** An example of shear transformations on a rectangle. * *********************** public class ShearExample extends JPanel { private static int gap=10, width=100; private Rectangle rect = new Rectangle(gap, gap, 100, 100); public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D)g; for (int i=0;\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10279,"url":"http:\/\/bangla.sitestree.com\/?p=10279","url_meta":{"origin":10404,"position":3},"title":"BetterCircleTest.java","author":"","date":"August 26, 2015","format":false,"excerpt":"********************** BetterCircleTest.java ********************** import java.awt.*; import java.applet.Applet; \/** Position circles down the diagonal so that their borders \u00a0*\u00a0 just touch. Illustrates that Java 1.1 lightweight \u00a0*\u00a0 components can be partially transparent. \u00a0* \u00a0 *\/ public class BetterCircleTest extends Applet { \u00a0 public void init() { \u00a0\u00a0\u00a0 setBackground(Color.lightGray); \u00a0\u00a0\u00a0 setLayout(null); \u00a0\u00a0\u00a0\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10329,"url":"http:\/\/bangla.sitestree.com\/?p=10329","url_meta":{"origin":10404,"position":4},"title":"Position circles down the diagonal so that their borders","author":"","date":"August 26, 2015","format":false,"excerpt":"import java.awt.*; import java.applet.Applet; \/** Position circles down the diagonal so that their borders \u00a0*\u00a0 just touch. Illustrates that AWT components are \u00a0*\u00a0 rectangular and opaque. \u00a0 *\/ public class CircleTest2 extends Applet { \u00a0 public void init() { \u00a0\u00a0\u00a0 setBackground(Color.lightGray); \u00a0\u00a0\u00a0 setLayout(null); \/\/ Turn off layout manager. \u00a0\u00a0\u00a0 Circle\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26860,"url":"http:\/\/bangla.sitestree.com\/?p=26860","url_meta":{"origin":10404,"position":5},"title":"Multithreaded Graphics and Double Buffering #Programming Code Examples #Java\/J2EE\/J2ME #Java Threads","author":"Author-Check- Article-or-Video","date":"May 3, 2021","format":false,"excerpt":"ShipSimulation.java Illustrates the basic approach of multithreaded graphics whereas a thread adjusts parameters affecting the appearance of the graphics and then calls repaint to schedule an update of the display. import java.applet.Applet; import java.awt.*; public class ShipSimulation extends Applet implements Runnable { ... public void run() { Ship s; for(int\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10404","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/130"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10404"}],"version-history":[{"count":1,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10404\/revisions"}],"predecessor-version":[{"id":10405,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10404\/revisions\/10405"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10404"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}