CSG

Brainache · 03-04-2010 08:06 PM

If you do CSG subtraction with both meshes being the same.. the result would be.. nothing... a blank mesh...

Dynad · 03-04-2010 08:24 PM

Hmmm i didn't know that, ill check that out ty smile

Dynad · 03-04-2010 11:33 PM

Ok i have that now working only problem ive left:

1 wall
1 barrel

Cgs function, there is now a hole in the wall but inside the hole, the wall gets the texture from the barrel. How can i fix that?

**Esenthel** · 03-04-2010 11:35 PM

you can set different material for the barrel before performing csg

Dynad · 03-04-2010 11:59 PM

Well i tried that but the funny thing is, the barrel itself changes but the texture on the wall not.

**Esenthel** · 03-05-2010 01:04 AM

are you calling 'setMaterial' before Csg ?

Dynad · 03-05-2010 06:29 PM

Yes thats it smile

**Esenthel** · 03-05-2010 11:26 PM

does this mean that the problem is solved?

Dynad · 03-06-2010 12:35 AM

yes it works now, but i have another question. When i use the csg on 2 objects, the first object cuts always in the middle of the other object... is that because i made those 2 objects game Items?

setPos or set matrix doesn't work, only the object itself moves, but the hole in the other object is still there even it doesn't hit each other.(first object makes always a hole in precisely in the middle of the other object)

**Esenthel** · 03-06-2010 01:35 AM

you can transform mesh with mesh methods

Dynad · 03-06-2010 06:11 PM

I have tried that, i am using the setMatrix to move the object, but the problem is that the matrix moves the whole world and not just only the item.

So everytime i click, the item(barrel) moves further away.

PHP Code:

    void createDefault()
    {
        Game::ObjParams &barrel = *Game::Objs("obj/item/misc/barrel/0.obj");
        Game::World.objCreate(barrel,Matrix(barrel.scale(),Vec(0,0,0)));

        __super::create(barrel);
    } 

PHP Code:

// calculate world position and direction vectors
Vec     pos, dir; ScreenToPosDir(Vec2(0,0),pos,dir);
PhysHit phys_hit; if(Physics.ray(pos,dir*ViewportActive.range,&phys_hit)) // if ray test hit an actor
    {
        if(phys_hit.obj) // if the actor comes from an object
        {
            if(Game::Item *item=CAST(Game::Item,phys_hit.obj)) // if the object is an item
    {
coord = phys_hit.plane.pos;

Items.New().createDefault();
Items.absElm(Items.absElms()-1).actor.gravity(false);
Items.absElm(Items.absElms()-1).actor.collision(false);
Items.absElm(Items.absElms()-1).lod = &Items.absElm(Items.absElms()-1).mesh->createLod(1);
Items.absElm(Items.absElms()-1).lod->scale(Vec(1,1,1));
wall.lod = &wall.mesh->createLod(1);
Items.absElm(Items.absElms()-1).lod->setMaterial(Materials("../data/mtrl/brick/0.mtrl"),0).setRender();
                         
Items.absElm(Items.absElms()-1).lod->transform(Matrix(coord));
//Items.absElm(Items.absElms()-1).actor.pos(coord);
//Items.absElm(Items.absElms()-1).mesh->transform(Matrix(coord));
//Items.absElm(Items.absElms()-1).mesh->setNormals();

Csg(*wall.lod,*Items.absElm(Items.absElms()-1).lod,SEL_SUB,NULL);
wall.lod->setRender();

 //Items.removeAbs(Items.absElms()-1);

}
} 

**Esenthel** · 03-06-2010 08:59 PM

Mesh::transform
you can use temporary meshes just for Csg

CSG
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