UnityEditor.ClothInspector.PaintPreSceneGUI C# (CSharp) Method

        private void PaintPreSceneGUI(int id)
        {
            Event current = Event.current;
            EventType typeForControl = current.GetTypeForControl(id);
            switch (typeForControl)
            {
                case EventType.MouseDown:
                case EventType.MouseDrag:
                {
                    ClothSkinningCoefficient[] coefficients = this.cloth.coefficients;
                    if ((GUIUtility.hotControl == id) || (((!current.alt && !current.control) && !current.command) && (current.button == 0)))
                    {
                        if (typeForControl == EventType.MouseDown)
                        {
                            GUIUtility.hotControl = id;
                        }
                        int mouseVertex = this.GetMouseVertex(current);
                        if (mouseVertex != -1)
                        {
                            bool flag = false;
                            if (this.state.PaintMaxDistanceEnabled && (coefficients[mouseVertex].maxDistance != this.state.PaintMaxDistance))
                            {
                                coefficients[mouseVertex].maxDistance = this.state.PaintMaxDistance;
                                flag = true;
                            }
                            if (this.state.PaintCollisionSphereDistanceEnabled && (coefficients[mouseVertex].collisionSphereDistance != this.state.PaintCollisionSphereDistance))
                            {
                                coefficients[mouseVertex].collisionSphereDistance = this.state.PaintCollisionSphereDistance;
                                flag = true;
                            }
                            if (flag)
                            {
                                Undo.RegisterCompleteObjectUndo(base.target, "Paint Cloth");
                                this.cloth.coefficients = coefficients;
                                this.SetupSelectionMeshColors();
                                base.Repaint();
                            }
                        }
                        current.Use();
                    }
                    break;
                }
                default:
                    if ((typeForControl == EventType.MouseUp) && ((GUIUtility.hotControl == id) && (current.button == 0)))
                    {
                        GUIUtility.hotControl = 0;
                        current.Use();
                    }
                    break;
            }
        }