swing - Draw a portion of a rotated image in Java -

-

i trying draw portion of circular game board. board rotates, i'd keep constant viewport. plan create bufferedimage of full board, rotate it, draw centered portion graphics paint method. however, graphics not have rotate, , graphics2d not have way draw portion of image.

any thoughts?

"graphics2d not have way draw portion of image."

that's not true. graphics2d inherits graphics this method. allows drawing portions of image. see example usage here

public abstract boolean drawimage(image img,                               int dx1,                               int dy1,                               int dx2,                               int dy2,                               int sx1,                               int sy1,                               int sx2,                               int sy2,                               imageobserver observer)

draws of specified area of specified image available, scaling on fly fit inside specified area of destination drawable surface. transparent pixels not affect whatever pixels there.

parameters:

  • img - specified image drawn. method nothing if img null.
  • dx1 - x coordinate of first corner of destination rectangle.
  • dy1 - y coordinate of first corner of destination rectangle.
  • dx2 - x coordinate of second corner of destination rectangle.
  • dy2 - y coordinate of second corner of destination rectangle.
  • sx1 - x coordinate of first corner of source rectangle.
  • sy1 - y coordinate of first corner of source rectangle.
  • sx2 - x coordinate of second corner of source rectangle.
  • sy2 - y coordinate of second corner of source rectangle.
  • observer - object notified more of image scaled , converted.

Comments

Post a Comment

Popular posts from this blog

java - WrongTypeOfReturnValue exception thrown when unit testing using mockito -

-
my test list<person> mylist; @test public void testisvalidperson() { mylist = new arraylist<person>(); mylist.add(new person("tom")); when(persondao.get(person)).thenreturn(mylist); when((persondao.get(person)).isempty()).thenreturn(false);//------exception thrown boolean result = service.isvalid("tom"); assertfalse(result); } method tested: public boolean isvalid(string person){ persondao = new persondao(); person personobj = new person(person); return (persondao.get(person).isempty())?false : true; } exception thrown: org.mockito.exceptions.misusing.wrongtypeofreturnvalue: boolean cannot returned get() get() should return list *** if you're unsure why you're getting above error read on. due nature of syntax above problem might occur because: 1. exception *might* occur in wrongly written multi-threaded tests. please refer mockito faq on limitations of concurrency testing. 2. sp
Read more

php - Magento - Deleted Base url key -

-
i working on cleaning url: http://mydomain.com/shop/shop/deals i going through settings in configuration tab in admin panel on magento , change secure , unsecure base urls remove first base url "shop" web page read: http://mydomain.com/shop/deals so changed unsecure base urls mydomain.com/shop mydomain.com , secure 12.345.67.89/shop 12.345.67.89. wrong thing do. i cannot reload page or admin console. how access these files through ftp , change correctly there?? when make changes in admin panel changes made in database not in file. have make changes in database. 1.go database , select core_config_data table under table find web/unsecure/base_url , web/secure/base_url . make changes here. don't forget clear cache in var/cache folder
Read more

android - How to disable Button if EditText is empty ? -

-
i have edittext , button in application. when button clicked,the text entered in edittext added listview. i want disable button if edittext empty.how ? this code button click imagebutton imb=(imagebutton)findviewbyid(r.id.btn_send); imb.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { edittext et = (edittext)findviewbyid(r.id.edittext1); string str = et.gettext().tostring(); web1.add(str); toast.maketext(shoutsingleprogram.this, "you entered...."+str, toast.length_short).show(); adapter1.notifydatasetchanged(); et.settext(""); } }); } how can ? edittext1.addtextchangedlistener(new textwatcher() { @override public void ontextchanged(charsequence s, int start, int before, in
Read more