Exemplo n.º 1
0
static int Face(lua_State *L)
    {
    mesh_t *mesh = checkmesh(L, 1);
    unsigned int i = checkindex(L, 2);
    if(mesh->mFaces == NULL || mesh->mNumFaces == 0 || i >= mesh->mNumFaces)
        return luaL_argerror(L, 2, "out of range");
    return pushface(L, &(mesh->mFaces[i]));
    }
Exemplo n.º 2
0
static int Faces(lua_State *L)
    {
    unsigned int i;
    mesh_t *mesh = checkmesh(L, 1);
    lua_newtable(L);
    if(mesh->mFaces == NULL || mesh->mNumFaces == 0) return 1;
    for(i = 0; i < mesh->mNumFaces; i++)
        {
        pushface(L, &(mesh->mFaces[i]));
        lua_rawseti(L, -2, i+1);
        }
    return 1;
    }
Exemplo n.º 3
0
		std::vector<Triangle> getConvex(std::vector<TPoint> &p) {
			static std::vector<Triangle> ret;
			ret.clear();
			nFace = 0;
			if(!init(p)) return ret;
			if (!isVisible(p, Face(0, 1, 2), p[3])) pushface(0, 1, 2); else pushface(0, 2, 1);
			if (!isVisible(p, Face(0, 1, 3), p[2])) pushface(0, 1, 3); else pushface(0, 3, 1);
			if (!isVisible(p, Face(0, 2, 3), p[1])) pushface(0, 2, 3); else pushface(0, 3, 2);
			if (!isVisible(p, Face(1, 2, 3), p[0])) pushface(1, 2, 3); else pushface(1, 3, 2);
			for (int a = 4; a < (int)p.size(); a++)	{
				TPoint base = p[a];
				for (int i = 1; i <= nFace; i++) {
					if (tmp[i].isOnConvex && isVisible(p, tmp[i], base)) {
						left = 0, right = 0;
						queue[++right] = tmp[i];
						tmp[i].isOnConvex = false;
						while (left < right) {
							Face now = queue[++left];
							if (!deal(p, std::make_pair(now.a, now.b), base)) pushface(now.a, now.b, a);
							if (!deal(p, std::make_pair(now.b, now.c), base)) pushface(now.b, now.c, a);
							if (!deal(p, std::make_pair(now.c, now.a), base)) pushface(now.c, now.a, a);
						}
						break;
					}
				}
			}
			for (int i = 1; i <= nFace; i++) {
				Face now = tmp[i];
				if (now.isOnConvex) {
					ret.push_back(Triangle(p[now.a], p[now.b], p[now.c]));
				}
			}
			return ret;
		}