render.DrawLine() - Positioning Help.

[Chickengbs]

Hello Facepunch.

I've been having some difficulty with my entity i've been working on for the last 4 days now, I just can't seem to position the 'render.DrawLine()' correctly. What I'm trying to do it position the line as if it's like a lazer on a gun. I'm basically trying to position it straight to come outwards from the muzzle of the gun.

-- Picture of turret.
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[LUA]
cam.Start3D2D(pos, ang, 0.7)

render.DrawLine(self:GetGunBase():GetPos(), self:GetGunBase():GetAngles():Forward() * 100, Color(255,0,0,255), true )
cam.End3D2D()
[/LUA]

-- If someone can help me I'd really appreciate it, thank you.

[Chickengbs]

-bump-

[NeatNit]

Use [img]http://wiki.garrysmod.com/favicon.ico[/img] [url=http://wiki.garrysmod.com/page/Entity/LocalToWorld]Entity:LocalToWorld[/url] to easily tweak both positions as needed.

[editline]5th September 2016[/editline]

Why are you using Start3D2D? Don't. Just put your rendering code in the Draw hook.

[Chickengbs]

Ok, I'll try that, thank you.

[meirl]

pretty sure you need to use cam.Start3D(), not Start3D2D

EDIT:

cam.Start3D();
render.DrawLine(self:GetGunBase():GetPos(), self:GetGunBase():GetPos() + self:GetGunBase():GetAngles():Forward() * 100, Color(255,0,0,255), true )
cam.End3D();

if you're doing this in ENT:Draw you can remove the cam.Start3D/End3D

[Chickengbs]

[QUOTE=NeatNit;51003396]Use [img]http://wiki.garrysmod.com/favicon.ico[/img] [url=http://wiki.garrysmod.com/page/Entity/LocalToWorld]Entity:LocalToWorld[/url] to easily tweak both positions as needed.

[editline]5th September 2016[/editline]

Why are you using Start3D2D? Don't. Just put your rendering code in the Draw hook.[/QUOTE]

Thanks a bunch, it works!

[editline]5th September 2016[/editline]

[QUOTE=meirl;51005467]pretty sure you need to use cam.Start3D(), not Start3D2D

EDIT:

cam.Start3D();
render.DrawLine(self:GetGunBase():GetPos(), self:GetGunBase():GetPos() + self:GetGunBase():GetAngles():Forward() * 100, Color(255,0,0,255), true )
cam.End3D();

if you're doing this in ENT:Draw you can remove the cam.Start3D/End3D[/QUOTE]

Yeah, a silly mistake on my behalf, thanks.