RTSEngine.Graphics.RTSBuildingModel.UpdateInstances C# (CSharp) Method

        public void UpdateInstances(GraphicsDevice g, Predicate<BoundingBox> fVisible)
        {
            visible = new List<VisibleBuilding>();
            if(fTeamIndex == eTeamIndex) {
                // Always Show Friendly Buildings
                for(int i = 0; i < fTeam.Buildings.Count; i++) {
                    if(fTeam.Buildings[i].Data != Data) continue;
                    if(fVisible(fTeam.Buildings[i].BBox)) {
                        VisibleBuilding vb = new VisibleBuilding();
                        vb.Position = fTeam.Buildings[i].WorldPosition;
                        vb.View = fTeam.Buildings[i].ViewDirection;
                        vb.BuildAmount = 1 - (float)fTeam.Buildings[i].BuildAmountLeft / (float)fTeam.Buildings[i].Data.BuildAmount;
                        if(vb.BuildAmount < 0.5) {
                            visible.Add(vb);
                        }
                        else {
                            visible.Add(vb);
                        }
                    }
                }
            }
            else {
                for(int i = 0; i < fTeam.ViewedEnemyBuildings.Count; i++) {
                    ViewedBuilding bv = fTeam.ViewedEnemyBuildings[i];
                    if(bv.Team != eTeamIndex || bv.Type != bType) continue;

                    BoundingBox bb = new BoundingBox(
                        Data.BBox.Min + bv.WorldPosition,
                        Data.BBox.Max + bv.WorldPosition
                        );
                    if(fVisible(bb)) {
                        VisibleBuilding vb = new VisibleBuilding();
                        vb.Position = bv.WorldPosition;
                        vb.View = bv.ViewDirection;
                        vb.BuildAmount = bv.BuildAmount;
                        visible.Add(vb);
                    }
                }
            }

            for(int i = 0; i < VisibleInstanceCount; i++) {
                instVerts[i].World =
                    Matrix.CreateRotationY(
                        (float)Math.Atan2(-visible[i].View.Y, visible[i].View.X)
                    ) *
                    Matrix.CreateTranslation(visible[i].Position)
                    ;
                instVerts[i].AnimationFrame = visible[i].BuildAmount;
            }
            if(rebuildDVB) {
                dvbInstances = new DynamicVertexBuffer(g, VertexRTSAnimInst.Declaration, instVerts.Length, BufferUsage.WriteOnly);
                dvbInstances.ContentLost += (s, a) => { rebuildDVB = true; };
            }
            dvbInstances.SetData(instVerts);
        }