The "how do I?" ReaScript thread

[Meo-Ada Mespotine]

Do you have a list of scale patterns, so people can copy'n'paste them directly from the docs to include them into the parameters?

[daniellumertz]

Originally Posted by Meo-Ada Mespotine

Do you have a list of scale patterns, so people can copy'n'paste them directly from the docs to include them into the parameters?

some basics scales:
2773- lydian 101010110101
2741- major 101011010101
1717- Mixolydian 101011010110 (don't know if need to put the 0 in the end of a scale that ends with 0, thinking in music theory ( or imagining an piano ) it makes sense tho.)
1709- Dorian 101101010110
1453-Minor 101101011010
1451-Phrygian 110101011010
1387-Locrian 110101101010
4095-Chromatic 111111111111
1365-whole tone 101010101010
etc etc etc...

there can be 4096 scales using 12 division per octave so don't need to list everything hehe this site have many tools for exploring scales ( also give the number that reaper uses when searching scales ) https://ianring.com/musictheory/scales/finder.php

[Meo-Ada Mespotine]

No problem. Just some basic scales for those beginning is a nice start.

Thanks

[amagalma]

Originally Posted by daniellumertz

(like 101011010101 major 2741 )

Originally Posted by daniellumertz

some basics scales:
2773- lydian 101010110101
2741- major 101011010101
1717- Mixolydian 101011010110 (don't know if need to put the 0 in the end of a scale that ends with 0, thinking in music theory ( or imagining an piano ) it makes sense tho.)
1709- Dorian 101101010110
1453-Minor 101101011010
1451-Phrygian 110101011010
1387-Locrian 110101101010

Remember that Reaper uses big endian, so they should be written in reverse. You can use the code I posted previously to get them in big endian.

[nofish]

Originally Posted by Meo-Ada Mespotine

Do you have a list of scale patterns, so people can copy'n'paste them directly from the docs to include them into the parameters?

There are also some on the stash:
https://stash.reaper.fm/browse.php?q...=th&o=nd&pp=24

[Coachz]

How to change the source channels on a send after creating the send. My track has many sends on it and I know how to create a send and how to change a source channel but it changes the wrong one. How to get the last created send?

https://forum.cockos.com/showthread.php?t=241380

[nofish]

Originally Posted by Coachz

How to change the source channels on a send after creating the send. My track has many sends on it and I know how to create a send and how to change a source channel but it changes the wrong one. How to get the last created send?

https://forum.cockos.com/showthread.php?t=241380

Haven't used it myself but wouldn't that be
SetTrackSendInfo_Value with 'I_SRCCHAN'?

[Coachz]

Originally Posted by nofish

Haven't used it myself but wouldn't that be
SetTrackSendInfo_Value with 'I_SRCCHAN'?

You would think that would work but if you check out my previous post you'll see that Reaper seems to be sorting sends and so often the one you just created is not the last one in order necessarily which is causing me to change the wrong send. So it's like I need some pointer or way to get the last created send after I create it

[nofish]

Originally Posted by Coachz

You would think that would work but if you check out my previous post you'll see that Reaper seems to be sorting sends and so often the one you just created is not the last one in order necessarily which is causing me to change the wrong send. So it's like I need some pointer or way to get the last created send after I create it

I see (missed that in the previous post, sorry).
Are you creating them via API or Reaper GUI?
If the first, CreateTrackSend returns the index of the created send, which you could then use with SetTrackSendInfo_Value?

[Coachz]

Thanks nofish. I'll give that a try. I'm using the API. How did you know it returns the index. All I saw was this and didn't know what integer was returning.

integer reaper.CreateTrackSend(MediaTrack tr, MediaTrack desttrIn)

[nofish]

It says in the doc.

return >=0 on success (== new send/receive index)

[Coachz]

Damn I missed that! Thanks so much.

[daniellumertz]

Originally Posted by amagalma

Remember that Reaper uses little endian, so they should be written in reverse. You can use the code I posted previously to get them in little endian.

Opss.. That is true, forget that because I made the function switch the order .


coach I made a script (send for a bus for a while) that a part of it is for looking into the sends

if you created the send in the script I think it is the last one or the first not sure (not on my pc right now). But if it was created before and not sure if was the last created, I think I made a loop to see the tracks it was connected .

[daniellumertz]

If there is a condition to end the script mid it "case of an error" how do you automatically undo what have been changed till that point?

End the undo block and then MainonCommand Undo?

[Meo-Ada Mespotine]

Originally Posted by daniellumertz

If there is a condition to end the script mid it "case of an error" how do you automatically undo what have been changed till that point?

End the undo block and then MainonCommand Undo?

Mostly yes. There's also a function for undo and even redo.
But better is to check for possible errors first before changing anything. It's less intrusive and as the undo-system if Reaper has its quirks, you may end up with the wrong things undone in rare cases and can't do something about it.

[Coachz]

Originally Posted by nofish

It says in the doc.

That worked great. Thanks again for helping me fix this. Yay !

[amagalma]

Guys, just for not spreading wrong information, the system that Reaper uses to store scales is called big endian. I had confused the terms. Big endian means that the most significant bit is first. For example, take the number 103 (one hundred and three) in decimal. It is written in big endian, which means that first comes the digit that shows hundreds, then the digit that shows tens and last the digit that shows units. I corrected it in my posts above

[Coachz]

Originally Posted by daniellumertz

Opss.. That is true, forget that because I made the function switch the order .


coach I made a script (send for a bus for a while) that a part of it is for looking into the sends

if you created the send in the script I think it is the last one or the first not sure (not on my pc right now). But if it was created before and not sure if was the last created, I think I made a loop to see the tracks it was connected .

Thank you. I got my script working. Yay

[Embass]

I want to change auto-save path for this action:
SWS/S&M: Resources - Auto-save track template (with items, envelopes)

Is it possible to change this path on the fly?

my code looks like this, but it doesnt work..

local project_path = reaper.GetProjectPath("")
local reaper_res_path = reaper.GetResourcePath()
local sws_ini_path = reaper_res_path.."\\S&M.ini"

-- boolean reaper.BR_Win32_WritePrivateProfileString(string sectionName, string keyName, string value, string filePath)
-- [BR] Equivalent to win32 API WritePrivateProfileString(). For example, you can use this to write to REAPER.ini

-- change auto save path in S&M.ini file
local ok = reaper.BR_Win32_WritePrivateProfileString(
	"Resources", -- section
	"AutoSaveDirTrackTemplates", 
	project_path, -- auto save path
	sws_ini_path
)

-- not sure if i need this.. 
local ok = reaper.BR_Win32_WritePrivateProfileString(
	"Resources", -- section
	"AutoFillDirTrackTemplates", 
	project_path, -- auto save path
	sws_ini_path
)

-- SWS/S&M: Resources - Auto-save track template (with items, envelopes) 
local command_id = reaper.NamedCommandLookup("_S&M_SAVE_TRTEMPLATE_SLOT2")
reaper.Main_OnCommand(command_id, 0) -- run action

[Coachz]

Is there an equivalent to UpdateArrange for the midi editor window?

[nofish]

Originally Posted by Coachz

Is there an equivalent to UpdateArrange for the midi editor window?

There's an open FR so looks like the answer is no currently.
https://forum.cockos.com/showthread.php?t=193104

[Coachz]

Originally Posted by nofish

There's an open FR so looks like the answer is no currently.
https://forum.cockos.com/showthread.php?t=193104

Ahh, thanks nofish. Let me buy you a trout. :-)

[nofish]

Originally Posted by Coachz

Ahh, thanks nofish. Let me buy you a trout. :-)

I had to look that up, but err..no thank you lol.

[daniellumertz]

this thread should be sticky ? maybe call a forum mod?
can names be tagged ?

like @daniellumertz

[nofish]

Originally Posted by daniellumertz

this thread should be sticky ? maybe call a forum mod?

Agreed. Actually I 'reported' the first post when I created it and asked if it could be stickied but no reaction so far.
Maybe someone else can try also?

can names be tagged ?

like @daniellumertz

Not that the tagged forum member gets a notification afaik.

[daniellumertz]

I REPORTED YOU NOFISH!!1!
hahaha
asked over there, let's see if they agree...

[nofish]

Thanks.

[Hypex]

Okay here's one. I've looked through the API and actions list. I don't see a way to do it directly. I don't know if it can be done. Perhaps in a round about way.


Okay so, in the case only a track is selected on the timeline, can you locate the item under the edit cursor of the selected track?

[daniellumertz]

I think you have to loop the items in that track and get info about where they start and end, then compare to the edit cursor position.

something like:

 cursor_pos = reaper.GetCursorPosition()
 track = reaper.GetSelectedTrack( 0, 0 )
 n_item = reaper.CountTrackMediaItems( track )

 for i = 0 , n_item - 1 do

local   loop_item = reaper.GetTrackMediaItem( track, i )    
local   loop_item_start  = reaper.GetMediaItemInfo_Value( loop_item, "D_POSITION" )
local   loop_item_len    = reaper.GetMediaItemInfo_Value( loop_item, "D_LENGTH" ) 
local   loop_item_end =   loop_item_start + loop_item_len
    if loop_item_start <= cursor_pos and cursor_pos <= loop_item_end then 
        item_under_edit_cursor = loop_item
    end
end

Edit: oh didn't know about this functions mespotine, cooll!!!

[Hypex]

Originally Posted by daniellumertz

I think you have to loop the items in that track and get info about where they start and end, then compare to the edit cursor position.

Thanks for the answer. That was fast! I thought it may be something similar. A bit like finding a whole track length.

[daniellumertz]

So I am using

window, segment, details = reaper.BR_GetMouseCursorContext()
local track = reaper.BR_GetMouseCursorContext_Track()

to get the track under mouse but depending on the zoom level It gets a bit weird and don't return the actual track under mouse. (SWS Beta latest version here)

some other way to do it ? Maybe using GetTrackFromPoint() and some reaper/lua function to get mouse xy?

[nofish]

Originally Posted by daniellumertz

Maybe using GetTrackFromPoint() and some reaper/lua function to get mouse xy?

Yes, this should do I think (untested):

tr = reaper.GetTrackFromPoint(reaper.GetMousePosition())

[amagalma]

Originally Posted by daniellumertz

So I am using

window, segment, details = reaper.BR_GetMouseCursorContext()
local track = reaper.BR_GetMouseCursorContext_Track()

to get the track under mouse but depending on the zoom level It gets a bit weird and don't return the actual track under mouse. (SWS Beta latest version here)

some other way to do it ? Maybe using GetTrackFromPoint() and some reaper/lua function to get mouse xy?

x, y = reaper.GetMousePosition()
retval, info = reaper.GetTrackFromPoint( x, y )

[daniellumertz]

thx people! I swear I looked for get mouse in the docs and didn't found hahaha worked better than the SWS actions, for some reason SWS when have multiple tracks with small size it get a bit funky heheh

[daniellumertz]

is there a way to an script dont create a undo point?

I created this script to change track height using MW but wished it didn't go to my undo history






if anyone wants also

is_new_value,filename,sectionID,cmdID,mode,resolution,val = reaper.get_action_context()
if is_new_value then
 x, y = reaper.GetMousePosition()
 track, _ = reaper.GetTrackFromPoint(x,y)
   if track then
   old_height = reaper.GetMediaTrackInfo_Value(track,"I_TCPH")
    if val > 0 then
    reaper.SetMediaTrackInfo_Value(track, "I_HEIGHTOVERRIDE", (old_height+15))
    else
    reaper.SetMediaTrackInfo_Value(track, "I_HEIGHTOVERRIDE", (old_height-15))   
    end
   end
end
reaper.TrackList_AdjustWindows(false)
reaper.UpdateArrange()

[Meo-Ada Mespotine]

If it doesn't defer, you can add the following line at the end of the script:

reaper.defer()

This prevents creation of undo-points.

[daniellumertz]

hmm didn't workk with this script, for some reason it doesent do nothing with defer at the end ...


edit:
one way is
reaper.Undo_DoUndo2( 0 )
at the end of the script with the rest as one undo block, works, but I still find it a little intrusive. Because the user could lost some redo options

[Meo-Ada Mespotine]

reaper.defer() shall do nothing but it also supresses creation of undo-points. It's a hack, as defer-scripts don't create undo-points, unless explicitly done.

But you can check this only, if you run the script from outside of Reaper's IDE and not from the inside. Means, you need to close the IDE and run it from the actions-list and then you can see, whether undo isn't created or not.

BTW: Which undo-points are created? Can you post a list of the things listed in the undo-list?

[daniellumertz]

each time i execute the script I posted above ( which is many as I am triggering it using mouse wheel to increase / decrease the track height ) it create a ReaScipt:Run

testing I noticed that the defer works just the first time I execute.

My hypothesis why defer is not working in this case: problem is that after one time running(that goes well) it is now in the background and then I can't execute it more times ( which is how it is supposed to work (see gif posts above)). So I need to exit the script after the defer, what is used to that reaper.atexit() ??

Code with defer

is_new_value,filename,sectionID,cmdID,mode,resolution,val = reaper.get_action_context()
if is_new_value then
 x, y = reaper.GetMousePosition()
 track, _ = reaper.GetTrackFromPoint(x,y)
   if track then
   old_height = reaper.GetMediaTrackInfo_Value(track,"I_TCPH")
    if val > 0 then
    reaper.SetMediaTrackInfo_Value(track, "I_HEIGHTOVERRIDE", (old_height+15))
    else
    reaper.SetMediaTrackInfo_Value(track, "I_HEIGHTOVERRIDE", (old_height-15))   
    end
   end
end
reaper.TrackList_AdjustWindows(false)
reaper.UpdateArrange()
reaper.defer()

[Meo-Ada Mespotine]

Hmm..ok this is something I've never experienced so far.

This is probably the right time to post again one of my most popular feature-requests: https://forum.cockos.com/showthread.php?t=215672