Model vertices

[Ollie]

So Is there a way to get model's vertex points?
If so, is there a way to check which of those are currently visible?

[thelastpenguin]

I would be very interested in hearing a solution to this aswell as there is very little documentation on such topics as this one.

[Ollie]

Nobody? :/

[FAU78]

I am wondering this, too...

There is a function called
[lua]IMesh:BuildFromTriangles( table vertexes )[/lua] which seems allowing rendering through vertex.

The vertices table is on:
[url]http://wiki.garrysmod.com/page/Structures/MeshVertex[/url]

However, still no example that how to organize this table...

Also, how to access model_view matrix is not sure...

[>>oubliet]

Here's a bit of code that will draw a wireframe around an entity using meshes sent from the server, hope it helps.

[lua]
local mdraw = {};

mdraw.cache = {};

function mdraw.RequestMesh( ent )

net.Start( "WireframeRequestMesh" );

net.WriteEntity( ent );

net.SendToServer();

end

function mdraw.ReceivedMesh( len )

local ent = net.ReadEntity();
local _mesh = net.ReadTable();

mdraw.cache[ ent:GetModel() ] = _mesh;

end
net.Receive( "WireframeCMesh", mdraw.ReceivedMesh );

function mdraw.Draw()

local ent = LocalPlayer():GetEyeTrace().Entity;

if ( ent and IsValid( ent ) ) then

if ( mdraw.cache[ ent:GetModel() ] ) then

cam.Start3D2D( ent:GetPos(), ent:GetAngles(), 1 )

cam.IgnoreZ( true );

local lastPos;
for _, data in pairs( mdraw.cache[ ent:GetModel() ] ) do

local pos = data.pos;

if ( lastPos ) then

render.DrawLine( pos, lastPos, Color( 255, 0, 0, 255 ), true );

end

lastPos = pos;

end

cam.IgnoreZ( false );

cam.End3D2D();

else

mdraw.RequestMesh( ent );
mdraw.cache[ ent:GetModel() ] = {};

end

end

end
hook.Add( "PostDrawOpaqueRenderables", "MeshDraw", mdraw.Draw );
[/lua]

Server :
[lua]
util.AddNetworkString( "WireframeRequestMesh" );
util.AddNetworkString( "WireframeCMesh" );

net.Receive( "WireframeRequestMesh", function( len, ply )

local ent = net.ReadEntity();

MsgN( "Sending mesh for " .. tostring( ent ) .. " to " .. ply:GetName() );

if ( ent && IsValid( ent ) ) then

local phys = ent:GetPhysicsObject();

if ( phys && IsValid( phys ) ) then

timer.Simple( 0.1, function()

net.Start( "WireframeCMesh" );

net.WriteEntity( ent );
net.WriteTable( phys:GetMesh() );

net.Send( ply );

end);

end

end

end);
[/lua]

Here's what the code looks like in action :
[url]http://youtu.be/MAO5RXKQ5oU[/url]

[EthanTheGreat]

If I'm not mistaken, get mesh only returns the physics collision model verts as appose to all the vertexes for the model.

I've asked around for this a while back, but no one seemed to have a clue how to do this.

My answer, though it's hacky, was to decompile the model to a smd and then table the verts.

[FAU78]

I saw the face poser of GMod. How is that implemented? I guess that program actually changes the rendering mesh.

Also, anyone has a trial on [lua]IMesh:BuildFromTriangles(table vertex)[/lua]? It is server side only, and will it actually change the rendering mesh?

[EthanTheGreat]

The table structure can be found [url=http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/indexaddf.html]here[/url]

If you need a sample code to understand how to use it ( like I usually do ), I think you can find it on the old wiki.

Hope this helps.

[FAU78]

Thanks! I do find one on

[url]http://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/index0a87.html[/url]

Try it tomorrow and see if it will work!