Smart Recut

Smart Recut is a more sophisticated and customizable algorithm of finding controllably asymmetric recut solutions, superior to the ordinary Recut procedure.

To initiate Smart Recut, do the following steps:

1. Open a model.
   
   
2. Run simple Recut:
   
   This is to provide a starting point for the Smart Recut algorithm.
   
   
3. Select the simple recut solution on the Allocation solutions panel.
   
   

4. Change the algorithm to Smart Recut, set other options according to your choice, and run it:
   

   Smart Recut algorithm seeks to keep the table plane of the model unchanged, unless the solution found deviates from the original by a considerably wide margin. Besides that, Smart Recut is enabled with the options to fix the girdle, girdle + crown, or girdle + pavilion. See Smart Recut with Restrictions for more details.

5. A set of new solutions appears.
   

By default, Smart Recut produces 8 solutions, each according to certain preset (see the definition below). The solution markers in the tree are color-coded to match the corresponding presets.

A preset is a collection of additional limitations on top of the appraiser which are imposed on the solution. Each Smart Recut solution seeks a balance between retaining the most mass of the stone and achieving the highest possible symmetry. The presets, in effect, assign different weights to the geometrical requirements, thus shifting that balance to a varying extent. The presets are ordered from the strictest to the most relaxed. Below is the list of all presets:

• 1. UltraSymmetry
• 2. HighOpticalSymmetry
• 3. MediumOpticalSymmetry
• 4. NormalOpticalSymmetry
• 5. Standard
• 6. ExtendedLimits
• 7. LowOpticalSymmetry
• 8. MaxMass
  
  

The preset with the most relaxed limitations is called MaxMass, for it should be expected to produce the solution of maximal mass (but probably lacking in symmetry and other qualities).

 Click to see the examples

Consider these two sets of Smart Recut solutions together with their photorealistic images. Each set is obtained from one stone and ordered by decreasing mass.

First set (Smart_Recut_example_1.oxgz):

Solution #	-	7	6	9	8	4	5	2	3	1
Preset	- (Original stone)	MaxMass	LowOpticalSymmetry	ExtendedLimits	Standard	NormalOpticalSymmetry	MediumOpticalSymmetry	HighOpticalSymmetry	UltraSymmetry	- (13. Single-M)
Mass	4.3900	4.2596	4.2540	4.2493	4.2373	4.2339	4.2298	4.2274	4.2089	4.1069
Optical symmetry	-	2.47	4.66	5.29	6.66	7.76	7.47	6.67	8.93	8.22
Picture

 

Second set (Smart_Recut_example_2.oxg):

Solution #	-	7	6	9	8	4	5	2	3	1
Preset	- (Original stone)	MaxMass	LowOpticalSymmetry	ExtendedLimits	Standard	NormalOpticalSymmetry	MediumOpticalSymmetry	HighOpticalSymmetry	UltraSymmetry	- (13. Single-M)
Mass	1.1269	1.1224	1.1221	1.1216	1.1206	1.1201	1.1187	1.1163	1.1126	1.0952
Optical symmetry	-	4.63	5.63	6.02	5.95	6.15	7.32	7.86	9.05	9.13
Picture

To obtain a photorealistic view of the stone, click Photoreal in the main menu. The main view field will be split in two, with the photorealistic view in the lower half. Note that in this mode you may still operate the Plans & Scans panel. As you select other models, the photorealistic image would change accordingly.

To view and edit presets, open the Appraiser editor panel (see My Appraiser), then click the Show presets button.

The limitations are defined with respect to those of MyAppraiser. Each parameter within each preset is described by two numbers. These are the multipliers for the left and right border, correspondingly. If both numbers are 1, this means that both borders are unchanged, that is, MyAppraiser values are used.

Sweetline is a derived parameter with special meaning; see Using SweetLine for more details.

Blue background denotes the selected field, if any. The name of the preset and the side (Min or Max) corresponding to the selected field are repeated in bold at the table header. Selection can be moved around using the arrow keys.

Hyphen on gray background denotes the positions where the corresponding limit is physically impossible to overstep, and thus need not be enforced specifically (lower limit of 0 for the culet size, for example). Such positions are not accessible for editing and can't be selected. When the selection is moved around with arrow keys, it jumps over them.

Yellow background denotes the multipliers which are loosening the MyAppraiser limitations, that is, left-border multipliers with value less than 1 and right-border multipliers with value greater than 1.

All numeric values are editable. Double-clicking in any table cell transforms it to the input field: . Pressing Enter does the same to the selected cell. You may change the field using the arrow keys Up/Down on the keyboard, or the arrow buttons next to the field, or simply by typing the values in. Pressing Esc finishes the editing and discards changes. Pressing Enter or clicking in another cell finishes the editing and keeps the newly entered value in the edited cell.

Changed values are shown in bold. The presence of such values is further indicated by the bold note Unsaved changes at the bottom of the panel.

Life cycle of the edited parameters is controlled by the following buttons at the bottom of the panel:

Undo	Undo the most recent change, if any.
Redo	Redo the recently undone change, if any.
Discard	Discard the recent edits.
Apply	Save the parameters within the program, so from that point on the new values would be applied to all models.

The parameters are stored in *.ini files located at %USERPROFILE%\OctoNus Software\SmartRecutPresets\. No mechanism for managing multiple versions of presets is provided. If you want to return to the default values, copy the files manually beforehand and save them elsewhere.