[pygame] Re: PixelArray versus Surfarray + Numeric/NumPy
Hello again. I may have posted prematurely. It seems that the easiest thing for me to do is to just set up a Python2.4 + Numeric dev environment and wait for the incompatibilities to sort themselves out. I still welcome any of your suggestions too my previous questions. Thanks again. On Mon, Jan 5, 2009 at 12:31 PM, Jordan Applewhite jordan.applewh...@gmail.com wrote: Hi everyone! I'm a hobby programmer and new to pygame. This is my first post to the list. I've been reading different docs and the the list archives to understand how best to move forward with experiments in image blending. The Surfarray tutorial on the docs page is excellent, but a little outdated. This seems to be a transitional period where the documentation and support for NumPy have not arrived and the pre-built Windows binaries for NumPy and Numeric don't support the latest python. As an alternative, can I just use pygame.PixelArray for all of my realtime blending needs? Is it too slow? If not, could anyone point me to some documentation on setting up a Windows build environment that will work for compiling pygame, python, and numpy together? Thanks very much for your help! Jordan
Re: [pygame] Re: PixelArray versus Surfarray + Numeric/NumPy
On, Mon Jan 05, 2009, Jordan Applewhite wrote: Hello again. I may have posted prematurely. It seems that the easiest thing for me to do is to just set up a Python2.4 + Numeric dev environment and wait for the incompatibilities to sort themselves out. I still welcome any of your suggestions too my previous questions. [...] Numpy and Numeric have several differences, but are - in their overall structure - similar. As you might have read, they support 3D access (R,G,B). In contrast to them, PixelArray supports only 2D access using the integer RGBA representation. if 2D access is enough for you, PixelArray should work well in 90 percent of all cases. It is optimised for the direct surface access, so that no performance loss through a 3rd party library is given. (Complex) Mathematical operations and manipulation however might perform better using Numpy and Numeric, especially in conjunction with the lapack/atlas (a highly efficient math library) bindings of Numpy. A better advice could be given, if you tell us your individual needs for the pixel operations you have to do. Regards Marcus pgpzZjFO7XruI.pgp Description: PGP signature
Re: [pygame] Re: PixelArray versus Surfarray + Numeric/NumPy
On Mon, Jan 5, 2009 at 10:02 AM, Jordan Applewhite jordan.applewh...@gmail.com wrote: Hello again. I may have posted prematurely. It seems that the easiest thing for me to do is to just set up a Python2.4 + Numeric dev environment and wait for the incompatibilities to sort themselves out. I still welcome any of your suggestions too my previous questions. Thanks again. By the way, you do mean python2.5 right? Python 2.6 and 3.0 are not widely supported yet, but 2.5 is.
Re: [pygame] Re: PixelArray versus Surfarray + Numeric/NumPy
Patrick Mullen wrote: On Mon, Jan 5, 2009 at 10:02 AM, Jordan Applewhite jordan.applewh...@gmail.com wrote: Hello again. I may have posted prematurely. It seems that the easiest thing for me to do is to just set up a Python2.4 + Numeric dev environment and wait for the incompatibilities to sort themselves out. I still welcome any of your suggestions too my previous questions. Thanks again. By the way, you do mean python2.5 right? Python 2.6 and 3.0 are not widely supported yet, but 2.5 is. Which platform. On Windows there is a Pygame 1.8.1 installer for Python 2.6. And at http://www3.telus.net/len_l/pygame/ there are Pygame 1.9.0a0 and NumPy 1.2.1 installers. NumPy 1.3 should be released soon and it will support Python 2.6. As for the choice between Numeric and NumPy, NumPy is now preferable. It was decided that Numeric will no longer be actively supported. Lenard -- Lenard Lindstrom le...@telus.net
Re: [pygame] Re: PixelArray versus Surfarray + Numeric/NumPy
Marcus: Thanks for illuminating the difference between PixelArray and Surfarray. I'm trying to learn how use additive blending effectively, so I think I can use either module. Patrick Lenard: Ok, I understand now that I should just use numpy. After I looked in the arraydemo.py example I could see that the the changes needed to use numpy were not very significant. Also, I'm finding this tutorial: http://www.scipy.org/Tentative_NumPy_Tutorial#head-b43db272311d8133ab8ba29b6e8ff921da5e792d to be very helpful. It seems like numpy would make it fun and easy to dynamically operate on tile maps, in addition to pixel surfaces. Many thanks, Jordan On Mon, Jan 5, 2009 at 2:24 PM, Lenard Lindstrom le...@telus.net wrote: Patrick Mullen wrote: On Mon, Jan 5, 2009 at 10:02 AM, Jordan Applewhite jordan.applewh...@gmail.com wrote: Hello again. I may have posted prematurely. It seems that the easiest thing for me to do is to just set up a Python2.4 + Numeric dev environment and wait for the incompatibilities to sort themselves out. I still welcome any of your suggestions too my previous questions. Thanks again. By the way, you do mean python2.5 right? Python 2.6 and 3.0 are not widely supported yet, but 2.5 is. Which platform. On Windows there is a Pygame 1.8.1 installer for Python 2.6. And at http://www3.telus.net/len_l/pygame/ there are Pygame 1.9.0a0 and NumPy 1.2.1 installers. NumPy 1.3 should be released soon and it will support Python 2.6. As for the choice between Numeric and NumPy, NumPy is now preferable. It was decided that Numeric will no longer be actively supported. Lenard -- Lenard Lindstrom le...@telus.net
