1. RE: Display Picture.
- Posted by Ray Smith <smithr at ix.net.au> Apr 08, 2002
- 409 views
Hi Sam, >From my poor memory I think read_bitmap only supports 256 (8 bit) colour images. It's also "possible" that some of the more advanced compression techniques aren't handled by read_bitmap either. I'm not sure about this but it would be worth reading the docs for read_bitmap. Ray Smith Sam wrote: > Hi ... > > Appreciate the answers I've gotten from you guys. Hope you can come > up with one more. I can't seem to get Euphoria to display a picture. > > include image.e > sequence Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Got message "type_check failure, MyPic is 1" > > Tried a different picture. This time, for variety, I got, "type_check > failure, DiffPic is 3." > > Wasn't going to give up that easily though. Changed the program > slightly. > > include image.e > object Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Hey! No error msg. this time! > > So I added a line: > > display_image ({100, 20}, Pic1 [2]) > > This time I got, "attempt to subscript an atom > (reading from it)" > > So then I tried to run the `Bitmap.ex' program in the demo\dos32 > directory. Tried three different pictures. One showed up on screen, but > only the bottom 20 percent. The other two get msg, `unsupported format.' > > > Any idea?? > > Thanks, > > Sam > > Ray Smith http://rays-web.com
2. RE: Display Picture.
- Posted by Sam <samuelc at teleport.com> Apr 08, 2002
- 400 views
euman at bellsouth.net wrote: > Hello Sam, > > read_bitmap( ) can only read in 256 color images and cannot handle RLE > encoded images. > > Personally I use 256 color images because there is a good chance that > later down the > road in your development you will be pressed with having to have the > ability to to > run or display your program on a computer that isnt equiped with > hardware to handle > any higher resolution that 640 width - 480 height - 256 colors. You > should keep this in > mind when you start a project by asking who your target audience will > be. If its an desktop > application for business this is certain to be an issue. On the other > hand, if you're a gamer > then high color sure makes for a nice look but there is a penalty that > must be paid for > the higher color, in speed. If you can hone the talent of the DOS world > and there are some > nice looking games written that only use 256 colors in DOS then you'll > be better off in future endevores. > > Im saying this because I myself fell into this lazy way of graphics > handling and only recently > did I discover how Windows handles palettes and this came after writing > thousands of lines > in a nice GUI only to re-write code due to the very fact that my app > would not look or > function properly on the lesser machines. > > Hopefully words of wisdom and if I can help you with this I certainly > will.. > Thanks for the words of wisdom. I made a quick sketch in Paint and saved it in 256 format. Still get message `attempt to subscript an atom.' And the `Bitmap' demo displayed it with only the bottom portion showing. What do you think?? Is there a way to display other pictures (.jpg, .gif)??
3. RE: Display Picture.
- Posted by Chris Bensler <bensler at mail.com> Apr 09, 2002
- 393 views
Sam wrote: > > euman at bellsouth.net wrote: > > Hello Sam, > > > > read_bitmap( ) can only read in 256 color images and cannot handle RLE > > encoded images. > > > > Personally I use 256 color images because there is a good chance that > > later down the > > road in your development you will be pressed with having to have the > > ability to to > > run or display your program on a computer that isnt equiped with > > hardware to handle > > any higher resolution that 640 width - 480 height - 256 colors. You > > should keep this in > > mind when you start a project by asking who your target audience will > > be. If its an desktop > > application for business this is certain to be an issue. On the other > > hand, if you're a gamer > > then high color sure makes for a nice look but there is a penalty that > > must be paid for > > the higher color, in speed. If you can hone the talent of the DOS world > > and there are some > > nice looking games written that only use 256 colors in DOS then you'll > > be better off in future endevores. > > > > Im saying this because I myself fell into this lazy way of graphics > > handling and only recently > > did I discover how Windows handles palettes and this came after writing > > thousands of lines > > in a nice GUI only to re-write code due to the very fact that my app > > would not look or > > function properly on the lesser machines. > > > > Hopefully words of wisdom and if I can help you with this I certainly > > will.. > > > > Thanks for the words of wisdom. I made a quick sketch in Paint and saved > > it in 256 format. Still get message `attempt to subscript an atom.' And > the `Bitmap' demo displayed it with only the bottom portion showing. > > What do you think?? Is there a way to display other pictures (.jpg, > .gif)?? > There are libraries in the RDS archives for handling jpg, gif, and pcx files that I know of. Probably others. Chris
4. RE: Display Picture.
- Posted by Chris Bensler <bensler at mail.com> Apr 09, 2002
- 394 views
Sam wrote: > Hi ... > > Appreciate the answers I've gotten from you guys. Hope you can come > up with one more. I can't seem to get Euphoria to display a picture. > > include image.e > sequence Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Got message "type_check failure, MyPic is 1" > > Tried a different picture. This time, for variety, I got, "type_check > failure, DiffPic is 3." > > Wasn't going to give up that easily though. Changed the program > slightly. > > include image.e > object Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Hey! No error msg. this time! > > So I added a line: > > display_image ({100, 20}, Pic1 [2]) > > This time I got, "attempt to subscript an atom > (reading from it)" > > So then I tried to run the `Bitmap.ex' program in the demo\dos32 > directory. Tried three different pictures. One showed up on screen, but > only the bottom 20 percent. The other two get msg, `unsupported format.' > > > Any idea?? > > Thanks, > > Sam > read_bitmap() returns a a 2-element sequence where the first element is a sequence that contains the bitmap palette, and the second is a sequence containing the bitmap data. Bitmaps of 2, 4, 16 or 256 colors are supported. If the file is not in a good format, an error code (atom) is returned instead: global constant BMP_OPEN_FAILED = 1, BMP_UNEXPECTED_EOF = 2, BMP_UNSUPPORTED_FORMAT = 3 Your first attempt failed to open the specified bitmap. Your second attempt tried to open an unsupported bitmap. The third attempt also failed to read_bitmap(), but you didn't check to see if Pic1 was successful and passed an atom to display_image(), when it accepts a sequence. This is what you should have, to be safe. (untested code) object Pic1 Pic1 = read_bitmap("C:\\Euphoria\\MyPic.Bmp") if atom(Pic1) then puts(2,sprintf("read_bitmap() failed. Error code: %d\n",Pic1)) abort(1) end if display_image({100,20},Pic1[2]) I can't explain why you would get unexpected images displayed, except that the bitmaps you are trying to use probably aren't supported. Chris
5. RE: Display Picture.
- Posted by Bernie Ryan <xotron at localnet.com> Apr 09, 2002
- 404 views
Sam wrote: > Hi ... > > Appreciate the answers I've gotten from you guys. Hope you can come > up with one more. I can't seem to get Euphoria to display a picture. > > include image.e > sequence Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Got message "type_check failure, MyPic is 1" > > Tried a different picture. This time, for variety, I got, "type_check > failure, DiffPic is 3." > > Wasn't going to give up that easily though. Changed the program > slightly. > > include image.e > object Pic1 > Pic1 = read_bitmap ("C:\\Euphoria\\MyPic.Bmp") > > Hey! No error msg. this time! > > So I added a line: > > display_image ({100, 20}, Pic1 [2]) > > This time I got, "attempt to subscript an atom > (reading from it)" > > So then I tried to run the `Bitmap.ex' program in the demo\dos32 > directory. Tried three different pictures. One showed up on screen, but > only the bottom 20 percent. The other two get msg, `unsupported format.' > > > Any idea?? > > Thanks, > Sam: You could use my win32eru by using borlands free resource compiler you can creating a windows resource file ( .RES ) and then converting it using win32eru to a euphoria include file. As far as I know windows resource compilers have no restrictions on colors. Maybe someone could try using a high color bitmap to prove me wrong because I don't have any access to a high color bitmap. win32eru will write all the resource creation routines while its translating. The other advantage to using win32eru is that you can create ALL your resources using a windows resource editor. There is a demo and docs included to help you. http://www.rapideuphoria.com/win32eru.zip Bernie
6. RE: Display Picture.
- Posted by Bernie Ryan <xotron at localnet.com> Apr 09, 2002
- 476 views
jluethje at gmx.de wrote: > Hi, > > Bernie wrote: > > > [...] > > You could use my win32eru by using borlands free resource compiler > > you can creating a windows resource file ( .RES ) and then converting > > [...] > > That sounds very interesting. Do you know, if there is a resource > *editor* along with borlands free resource compiler? Juergen: You only need a resource editor if you want to do complex resource designs and don't like to do a lot of typing. You can always use any text editor. The resource compiler MUST generate 32-BIT resource files. If you want to use a resource editor then here is the manual for Weditres resource editor which explains how to design and compile resources. http://www.q-software-solutions.com/lccwin32/manual/Weditres.htm This is where you can download the Weditres resource editor. http://www.objectcentral.com/downloads.htm Bernie