Draw_poly?

[mconsidine]

Is there any documentation available for "draw_poly"? It appears to be omitted from the list of functions available - or have I overlooked something?
Matt

[ShotaOchi]

I'm not sure which version of imager has draw_poly function.
Can you tell me?

[mconsidine]

Hi, I see it in the current master code on dahtah's GitHub. Thanks for looking! Matt Sent from allegedly smart phone

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On Mon, Jul 5, 2021, 3:48 AM Shota Ochi ***@***.***> wrote: I'm not sure which version of imager has draw_poly function. Can you tell me? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#157 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEPIPHPRWLDPYDFH5ZUO6TTWFPVBANCNFSM47Z62OKQ> .

[mconsidine]

See line 417 for example in src/RcppEcports.cpp

[mconsidine]

It's also in your fork:
imager/src/RcppExports.cpp

[ShotaOchi]

I saw it.
Which version of imager exports the function?
We can put it back if old imager exports the function.

[mconsidine]

I'm not sure. It's the first timetomei needed it. How could I do this with Magicka Sent from allegedly smart phone

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On Mon, Jul 5, 2021, 4:54 AM Shota Ochi ***@***.***> wrote: I saw it. Which version of imager exports the function? We can put it back if old imager exports the function. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#157 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEPIPBYXA7QMM4HFXHXYFLTWFXN7ANCNFSM47Z62OKQ> .

[ShotaOchi]

I believe image_draw function of magick package is what you're looking for.

library(magick)
library(imager)

lineseg <- matrix(c(5,5,100,100,150,110,180,10),nrow=4,byrow=TRUE) 
colnames(lineseg)<-c('x','y') 
a <- image_draw(image_read(boats))
lines(lineseg, col = "red")
dev.off()
b <- magick2cimg(a)

layout(t(1:2))
plot(boats)
plot(b)

Note that this way doesn't work for very small images.

[mconsidine]

I've found that I can use "implot" to accomplish this. But I think it would be good to have draw_poly/draw_polygon brought back.
Thank you!
Matt