Re: [piccolo2d-dev] picking problem
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
Re: [piccolo2d-dev] picking problem
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
Re: [piccolo2d-dev] picking problem
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
