// Generate paint recipes.

        // minConcentration - the minimum permitted concentration in a recipe (10 for paint, 50 for ribbons)

        // maxConcentration - the maximum concentrataion for a recipe

        // minReagents - the minimum number of ingredients in a recipe

        // maxReagents - the maximum number of ingredients allowed in a recipe

        // fullQuantityDepth - at this depth of ingredient or below, allow up to fullQuantity of any reagent

        // fullQuantity - the maximum amount of any reagent to permit up to the full quantity depth. After that, reagents are limited by the

        //                per-reagent value

                        uint targetQuantity = (node.ReagentCount <= FullQuantityDepth)

                            ? ((uint)node.ReagentCount * FullQuantity) 

                            : node.MaxConcentration + 1;

                        uint targetQuantity = MinConcentration - 1;

                        uint quantityLimit = (node.ReagentCount <= FullQuantityDepth) 

                            ? (FullQuantity * (uint)node.ReagentCount) 

                            : node.MaxConcentration;

                        } while ((targetQuantity < quantityLimit) && (node.CurrentTargetQuantity != node.UsedQuantity));

                            Progress?.Invoke(this, null);