Camera calculates distance? - GameCreators Forum

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TappyType

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Posted: 25th Apr 2020 16:52

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Hello,

I'm new to development in AppGameKit, however have used DB and FPSCx9 in years prior.

I am trying to make a basic app at the moment which will utilize the device rear facing camera to calculate and relay distance, and elevation of a targeted object; however am having difficulty getting the app to so much as initialize the camera and display the feed on-screen. I have attempted both an AR approach Ex: ARDrawBackground() as well as a "standard" approach Ex: RequestPermission( "Camera" ) | ShowImageCaptureScreen(); however neither approach seems to be working.

Is this something that AppGameKit is capable of doing? Or would I need to consider an alternative IDE for this particular project?

Thanks!
Tappy

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fubarpk

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Posted: 25th Apr 2020 17:28 Edited at: 25th Apr 2020 17:30

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if you are talking about objects you have brought into play

+ Code Snippet

//*******************************************************************************************	
//gets the distance between two objects passed
//*******************************************************************************************	
function getDistance(objectID as integer,objectID2 as integer)
	distance as float
	vec1=CreateVector3(GetObjectWorldX(objectID),GetObjectWorldY(objectID),GetObjectWorldZ(objectID))
	vec2=CreateVector3(GetObjectWorldX(objectID2),GetObjectWorldY(objectID2),GetObjectWorldZ(objectID2))
	distance=GetVector3Distance(vec1,vec2 ) 
	DeleteVector3(vec1)
	DeleteVector3(vec2)
endfunction distance

You should be able to replace the above with camera coordinates and if you cant get that to work just position an invisible
object where the camera is

if you mean like detect a real table as such and its distance from the camera that requires quite allot of work

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fubarpk on googleplay..https://play.google.com/store/apps/developer?id=fubarpk

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TappyType

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Posted: 25th Apr 2020 17:45

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"if you mean like detect a real table as such and its distance from the camera that requires quite allot of work"

Yup, camera in this context would be referring to a physical device camera capable of capturing/streaming video and image content. I understand it would involve a sizable amount of coding, so therefore want to make sure AppGameKit supports this type of functionality within the IDE.

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fubarpk

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Posted: 25th Apr 2020 17:55 Edited at: 25th Apr 2020 17:58

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If your planning on using Tier2 and doing all your code in C++ then this should be achievable
I haven't seen any of the TGC community achieve that yet and even in the C community there
is examples out there that are quite large and complex to do just the simplest of 3d recognition.

Depending on your project ide do allot more research on what can and cant be done with the
recognition in the first place in any language. One project I saw where a group of university students
were working on such placed objects that the program could identify to help with the calculations

Edit which also meant creating hardware

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TappyType

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Posted: 25th Apr 2020 18:04

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That's kind of the assumption I had after purchasing and beginning to dive into AGK. Project specific hardware wouldn't be too difficult in theory for an RPI / 0, however that's a different approach even if continuing dev. on AppGameKit for the RPI platform.

Thank you for the advice and assistance.
-Tappy

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smallg

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Posted: 26th Apr 2020 12:01

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This post has been marked by the post author as the answer.

it should be something like this

+ Code Snippet

permission$ = "Camera"
if ( CheckPermission( permission$ ) <= 0 )
        RequestPermission( permission$ )
        while( CheckPermission( permission$ ) = 1 )
                Sync()
        endwhile
endif

SetImmersiveMode(1) //docu said from 4.4 up

img=1

cam=0

SetDeviceCameraToImage(cam,img) //cam input goto image, image for id will created

spr=CreateSprite(img)                   //image output into a sprite
setspritesize(spr,GetVirtualWidth(),GetVirtualHeight()) //full size

do
        print("click to exit")
        if GetPointerPressed() then exit
        sync()
        
loop
end

life's one big game
spec= i5 4ghz, 16gb ram, Nvidia 1070ti gpu

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TappyType

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Posted: 26th Apr 2020 15:29

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Wow, that works great; thanks!

I wouldn't have thought to output the image to a sprite, my understanding being that a sprite would have been a static entity.

I guess I've got more reading into the commands to be doing as well since it seems I was declaring the check permissions variable incorrectly.

Much appreciated
-Tappy.

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