SOLVED: Polyvector TX,TY Offset howto?

[Hark0]

Hi, I want to make my own ZOOMANIM function:

I'm use this, but ONLY is valid for a ONE row sprite anim:

Code (glbasic) Select Expand


LOCAL Tile=30
LOCAL Escala=Zoom*Tile
LOCAL Origen=Sprite*Tile

STARTPOLY Anim
POLYVECTOR PosX+0, PosY+0 ,0+Origen ,0
POLYVECTOR PosX+0, PosY+Escala ,0+Origen ,Tile
POLYVECTOR PosX+Escala, PosY+Escala ,Tile+Origen ,Tile
POLYVECTOR PosX+Escala, PosY+0 ,Tile+Origen ,0
ENDPOLY

Any have the same func but for load any sprite of anim?

In the anim attached I want use func like ZOOMANIM anim,sprite,x,y,zoom...

When blue sprite are number 2... in the image attached for example.

Thanks!

[mentalthink]

I don't understand too much?¿, you want make an animation whit polyvector, (like drawanim?¿) if is this I think the easy way, use different sprites then you make a counter, passing each image (equal size) to the polyvector...

Anotherway using atlas image I think you have to changw the UV to the correct position in the image... (I think if you multiply x 2 and you image it's in square shape , have to works)

Something doing a counter...
number it's a counter

If number>size1
  uv=uv*2
else
number=0
posuv=1
endif

if posuv=1 and number>size1

[mentalthink]

I don't understand too much?¿, you want make an animation whit polyvector, (like drawanim?¿) if is this I think the easy way, use different sprites then you make a counter, passing each image (equal size) to the polyvector...

Anotherway using atlas image I think you have to changw the UV to the correct position in the image... (I think if you multiply x 2 and you image it's in square shape , have to works)

[Hark0]

My question are:

If I pass to function a Sprite Number of a Anim.... How find the correct TX,TY posision on Anim for use with POLYVECTOR?

In other words:

Sprite 0 (red) of sample are TX=0, TY=0
Sprite 1 (green) of sample are TX=30, TY=0

and Sprite 2 (blue) and 3(violet)?

[Hark0]

Hi, searching on Forum and making some test, this is a valid ZOOMANIM function.

Code (glbasic) Select Expand

FUNCTION ZOOMANIM: Anim,Sprite,PosX,PosY,Zoom
LOCAL Tile=30
LOCAL Escala=Zoom*Tile
LOCAL sx,sy,cols,tx,ty

GETSPRITESIZE Anim, sx, sy
cols = INTEGER(sx / Tile)
    tx = MOD(Sprite, cols) * Tile
    ty = INTEGER(Sprite/cols) * Tile

STARTPOLY Anim
POLYVECTOR PosX+0, PosY+0 ,tx ,ty
POLYVECTOR PosX+0, PosY+Escala ,tx ,ty+Tile
POLYVECTOR PosX+Escala, PosY+Escala ,tx+Tile ,ty+Tile
POLYVECTOR PosX+Escala, PosY+0 ,tx+Tile ,ty
ENDPOLY

ENDFUNCTION

WARNING! This code is valid for a 30x30px Tile... Change value of Tile for other sizes...

You can use this function ZOOMANIM: Animation,SpriteNumber,PosX_Screen,PosY_Screen,Zoom_Factor

Zoom_Factor 1 -> 100%
Zoom_Factor 2 -> 200%
etc...

[mentalthink]

Ok Hark, I don't know if putted, but I do whit a counter  , but I look the another code I think it's better , whit the mathematical tricks.  thanks for the search.

[MrTAToad]

Is it faster than ZOOMSPRITE ?

[Hark0]

Is it faster than ZOOMSPRITE ?

I don't know... I need a ZOOM Animation (GLB not have this func), not a Zoomsprite 

[mentalthink]

A question guys, when MrT question about the speed, how do you do for easure the speed of some comands... I read similar questions sometimes, but really I don't know how you measure the command speeds, whit counters and prints,or GLbasic have something internal in Debug or something like that?¿...

Thanks and sorry for the 

[MrTAToad]

Is it faster than ZOOMSPRITE ?

I don't know... I need a ZOOM Animation (GLB not have this func), not a Zoomsprite 

Yes, I meant ROTOZOOMSPRITE

[MrTAToad]

A question guys, when MrT question about the speed, how do you do for easure the speed of some comands... I read similar questions sometimes, but really I don't know how you measure the command speeds, whit counters and prints,or GLbasic have something internal in Debug or something like that?¿...

Thanks and sorry for the 

Usually you need to measure how quickly the command completes.  However, it does need to be compared to ROTOZOOMSPRITE.  Essentially, you get the GETTIMERALL() value before the function starts, get it after and subtract the difference.  The lower the value, the quicker the operation.

You do need to do it for, say, 100 times (and average out the result), as Windows is a multi-tasking system and of course various things can affect the program.

[mentalthink]

Thanks Mrtatoad (I think I have to review the help, a lot fo commands I forget it), thanks in advance 

[fuzzy70]

Technically you cannot compare the speed against ROTOZOOMSPRITE as it has no support for sprites loaded with LOADANIM, which is the reason why this code was posted.

Sure you can compare it speedwise to a single sprite but the result is meaningless due to the different functionality.

Polyvectors are slower on some platforms (like cannoo etc I think & maybe older android devices)

Lee

Sent from my Xperia Z using Tapatalk 2

[MrTAToad]

In which case you would compare it with ROTOZOOMANIM...

[fuzzy70]

In which case you would compare it with ROTOZOOMANIM...

True, I don't use any of the anim commands as I roll my own & was unaware ROTOZOOMANIM even existed. I presumed it didn't exist hence the reason for the original post.

Lee

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