[Question] Animating dxDrawMaterialLine3D

[kieran]

Hey, so I know how to make a 3D image in the GTA world, but I want to animate it to turn like a gif, I don't know any way of doing this though...  Is there any suggestions/solutions to how I can move it when the client renders? 

Here is code to create the image

size = 3

local img = dxCreateTexture("circle.png") --The image

function createIMG()  -- x,y,z, targetx,targety,targetz,texture,width,color,lookx,looky,lookz
	x,y,z = -2329.3, -1605.6, 483.2 --Coordinates
	image = dxDrawMaterialLine3D (x, y, z, x+size, y, z+size/2,img, size, tocolor(255,255,255,255), x, y+10, z) --draw the image
  
--How would I rotate the image? 
end

addEventHandler("onClientRender", root, createIMG)

The only way I could think of is making the image an element somehow and then rotating it...  But I don't know how I'd do that, thanks for any advice/help.  

[Mr.Loki]

For it to rotate you need to use the lookAt args and and use sine and cosine to rotate around the x and y.

Also the way u calculated the size made the image oval and i fixed that.

local size = 3
local img = point(500,-1)
local rot = 0

function createIMG()
	local x,y,z = 
	local rx = math.sin(rot)*1
	local ry = math.cos(rot)*1
	dxDrawMaterialLine3D( x, y, z, x, y, z+size, img, size, -1, x+rx, y+ry, z )
	rot = rot +.01
end
addEventHandler("onClientRender", root, createIMG)

 

[kieran]

@Mr.Loki Thanks, but I want it to rotate clockwise, not spin on the z axis...

[Mr.Loki]

1 hour ago, kieran said:

@Mr.Loki Thanks, but I want it to rotate clockwise, not spin on the z axis...

Try this

local size = 1
local img = point(100,-1)
local rot = 0

function createIMG(dt)
	local x,y,z = getElementPosition( localPlayer )
	local rx = math.sin(rot)*size
	local rz = math.cos(rot)*size
	dxDrawMaterialLine3D( x-rx, y, 1+z-rz, x+rx, y, 1+z+rz, img, size*2, -1, x, y+1, 1+z )
	rot = rot +(.01*dt/17)
end
addEventHandler("onClientPreRender", root, createIMG)

 

[kieran]

Thanks @Mr.Loki, one question though... why do you pass dt?

[IIYAMA]

https://wiki.multitheftauto.com/wiki/OnClientPreRender

dt is the timeslice. Read the wiki.

It is the delay/time between the frames, created ONLY by the onClientPreRender

 

---

If you have 60 fps. The timeslice is around:

1000(1sec) / 60 = 16,666666666666667 ms.

 

 

[Slim]

https://community.multitheftauto.com/?p=resources&s=details&id=12052