Thanks for the comments Aaron, I may well look into sub classing the PImage.
The screen shots are from a board game called Advanced Squad Leader. I am developing on and off a solitaire version based on the solitaire rules of one of the modules in the game. \Robert On 14 March 2012 03:46, Aaron Dixon <atdi...@gmail.com> wrote: > Hi, Robert, > > When you rotate a PImage, you are saying it is getting "squared" -- > meaning that it will get picked if the LOS clips the corner, even if > the rotated image isn't covered. > > But PImages should rotate and get picked correctly. Are you not > finding that to be the case? If the problem is that Piccolo2D simply > isn't acknowledging transparency when picking is happening, then > probably the best solution is to create a PImage class that does know > about transparency. > > Looks like a very interesting thing you're creating, btw. > > -- Aaron > > > On Mon, Mar 12, 2012 at 4:24 AM, Robert Kovacs <rsksmi...@gmail.com> > wrote: > > Thanks Aaron for your interest! > > > > I have managed to "solve" the problem but I am not totally happy. > > > > I have put some code snippets and screen shots in the attached word doc. > > > > Rob > > > > > > On 11 March 2012 22:06, Aaron Dixon <atdi...@gmail.com> wrote: > >> > >> Rob, > >> > >> Can you clarify your problem a little bit more? Some (short snippets > >> of) code might help. > >> > >> How are you picking the nodes along the line of sight? Are you using > >> Piccolo intersects() methods or doing something else? > >> > >> Aaron > >> > >> On Tue, Mar 6, 2012 at 10:07 AM, Robert Kovacs <rsksmi...@gmail.com> > >> wrote: > >> > Dear all, > >> > > >> > first off the problem I have is not caused by a bug with Piccolo2d. It > >> > is > >> > related to a game that I am writing using Piccolo 2d. > >> > > >> > Let me explain: > >> > > >> > 1. I have a map board made up of hexagons - each hexagon being a > PPath > >> > with > >> > additional child PPaths for the terrain within the hexagon. > >> > 2. I need to verify a Line Of Sight between hexagons. To do this I am > >> > taking > >> > the centre point of the from and to hexagons and using a line > >> > calculation > >> > algorithm picking the nodes in between. > >> > > >> > This works fine with PPath nodes as the picking works a dream. > >> > > >> > The problem comes when I add an image, for a building. The picking > works > >> > fine if the PImage is rectangular and is not rotated. However I do > have > >> > non > >> > rectangular buildings which are rotated. This means that the picking > >> > will > >> > pick the building PImage when there is no building at that actual > point. > >> > > >> > I have implemented a halfway solution whereby I create a BufferedImage > >> > of > >> > the view and trace a line from start to end point. As the building > >> > images > >> > are transparent me getPixel function checks for non transparent > colours > >> > and > >> > reports an obstacle. > >> > > >> > - This sort of works ok but has been a right muddle to implement due > to > >> > transposing the start and end points on the screen to the > BufferedImage. > >> > - Also this only works when checking the LOS of the on screen visible > >> > portion of the map. > >> > > >> > What I was wondering was .... has anyone got any ideas/ suggestions? > >> > > >> > I have thought of creating a PPath around the building and using that > >> > when > >> > picking making the image layer invisible at the moment of picking - > Are > >> > there any other ideas?? > >> > > >> > Thanks > >> > > >> > Rob > >> > > >> > -- > >> > Piccolo2D Developers Group: > >> > http://groups.google.com/group/piccolo2d-dev?hl=en > >> > >> -- > >> Piccolo2D Developers Group: > >> http://groups.google.com/group/piccolo2d-dev?hl=en > > > > > > -- > > Piccolo2D Developers Group: > > http://groups.google.com/group/piccolo2d-dev?hl=en > > -- > Piccolo2D Developers Group: > http://groups.google.com/group/piccolo2d-dev?hl=en > -- Piccolo2D Developers Group: http://groups.google.com/group/piccolo2d-dev?hl=en
