Search found 80 matches
- Mon May 10, 2021 11:46 am
- Forum: Other topics
- Topic: Selective area load of Images
- Replies: 3
- Views: 2523
Re: Selective area load of Images
As a function that extracts an area of an image from x1,y1 to x2,y2 and puts it at destx,desty on the screen: img$ = "Examples/Graphics/images/firtree.png" GRAPHICS CROP_IMG(img$, 200,200, 230,230, 100,100) DEF CROP_IMG (name$, x1,y1, x2,y2, destx,desty) spr$ = UNIQUE_STR$() SPRITE spr$ BEGIN ABS(x2...
- Mon May 10, 2021 11:34 am
- Forum: Other topics
- Topic: Selective area load of Images
- Replies: 3
- Views: 2523
Re: Selective area load of Images
What about starting a new sprite with the desired final size and then drawing the image to the sprite using negative coordinates to essentially crop the image. Then you can move the sprite where you want and show it or stamp it to the main graphics window. Here is how I can get a 30x30 portion put o...
- Sun Apr 11, 2021 6:05 pm
- Forum: Other topics
- Topic: Reading nth line in a file
- Replies: 4
- Views: 2956
Re: Reading nth line in a file
You're welcome. However, after some testing I determined that using a bunch of READLINE calls is by far the fastest method. Here is my test file that times three different FILE_SETLINE functions: DEF FILE_SETLINE_RD (file$, line) FILE file$ SETPOS 0 IF line = 0 THEN RETURN FILE file$ READDIM bytes, ...
- Thu Apr 08, 2021 6:29 pm
- Forum: Other topics
- Topic: Reading nth line in a file
- Replies: 4
- Views: 2956
Re: Reading nth line in a file
Follow-up thought: If memory is an issue or you just want a safer way to do this, modify the above function to use FILE N$ READDIM M, N, K in a loop, reading K bytes at a time. Then you can keep overwriting the bytes() variable as you count newline characters, keeping track of the total running file...
- Thu Apr 08, 2021 6:10 pm
- Forum: Other topics
- Topic: Reading nth line in a file
- Replies: 4
- Views: 2956
Re: Reading nth line in a file
I recently tried to figure out how to do this but ended up settling for doing a bunch of READLINEs until I reached the line I wanted. However, your post got me thinking about the problem again and I realized that if you know the file size at the line you want, you can use FILE N$ SETPOS X. I briefly...
- Thu Mar 18, 2021 7:42 pm
- Forum: Other topics
- Topic: New to SB and File handling
- Replies: 2
- Views: 2320
Re: New to SB and File handling
What is the expected range of values for your numeric variables? For example, if they are limited to the range 0-255 then FILE WRITE and FILE READ can be used, which write and read a single byte. But other numeric values will require some additional code to preserve precision. The below example uses...
- Wed Mar 03, 2021 3:57 pm
- Forum: Libraries
- Topic: Recursively Listing Files and Folders
- Replies: 2
- Views: 4480
Re: Recursively Listing Files and Folders
Just updated the library code with some bug fixes.
- Sat Feb 27, 2021 6:05 am
- Forum: Libraries
- Topic: Recursively Listing Files and Folders
- Replies: 2
- Views: 4480
Recursively Listing Files and Folders
Below is a standalone library for creating a list of either all files or all folders recursively from a starting directory. The two main functions are: DIRS_LIST_RECURSIVE(dir$) FILES_LIST_RECURSIVE(dir$) Here is a usage example: {{/lib/files/list_recursive}} ' whatever you name it and wherever you ...
- Sat Jan 16, 2021 3:29 pm
- Forum: Other topics
- Topic: Format string with PRINT command
- Replies: 4
- Views: 3098
Re: Format string with PRINT command
Here's another option that builds the format string from right to left and then applies it.
Add a trim$() to the return line or whenever you call fmt$ to remove leading spaces.
Code: Select all
def fmt$(a)
f$="###"
m=1000
while abs(a)>=m
f$="###,"&f$
m*=1000
endwhile
return str$(a,f$)
enddef
- Thu Jan 07, 2021 9:46 pm
- Forum: Other topics
- Topic: New version has wrong number?
- Replies: 7
- Views: 4838
Re: New version has wrong number?
Here is a thread discussing some different ways to achieve select-case functionality:
https://www.kibernetik.pro/forum/viewto ... =26&t=2387
https://www.kibernetik.pro/forum/viewto ... =26&t=2387