3DCalc
3DCalc news

11.09.2006 DiamCalc 2.8

The DiamCalc 2.8.0 (build 375) is released.

The DiamCalc 2.8 has the following new features:

  • Added the possibility to generate same RTF and HTML reports for scanned polished diamonds as in the OctoNus Helium software. Users may customize report templates to fit their needs. Such reports may be generated using files with 3D model of the stone obtained by OctoNus scanners as well as using any other imported 3D model.
  • The Pavilion and observer (dark zone body) lighting was added.
  • The new "Princess 3-chevron" cut was added.
  • Support for external cuts from DLL was added. All DLLs implementing such cuts should be placed in the "Cuttings" subfolder of DiamCalc. The content of this folder is analyzed at the start of the program and all found cuts are appended to the list of available cuts. If you save DMC file with external cut and pass it to another user of DiamCalc or GemAdviser, make sure that the recipient also has the corresponding DLL.
  • The Cut Quality estimation has new index: Dark zone mono. Calculation of Contrast is disabled.
  • AGS Angular Spectrum Evaluation Tool + White lighting (ASET white) is added. It has the same settings as ASET lighting, and has one additional diffuse white light source.
  • Added possibility to view color information of any point of the modelís photoreal image. Choose menu item View -> Color information and click right mouse button on image to get color information. The popup window will contain detailed information which is updated by the right-click on the model.
  • Added "Lower facets length" parameter to Brilliant cut to measure lower girdle facets according to GIA and Sarin.

Please read more details

Download the DiamCalc 2.8

30.09.2005 DiamCalc 2.4 beta

The DiamCalc 2.4.0 (build 337) beta version is released.

This is a nonscheduled beta version devoted to the new AGS_2005 appraiser. The goal of the version is to help the gem cutters to determine the final grade of the cut. This version is not a final release, but only a beta, because the rules of the new AGS 2005 appraiser may still be corrected.

The DiamCalc 2.4 has the following new features:

  • The Brilliant cut has new parameters: Culet offset and azimuth, Upper and lower facets azimuth.
  • The new AGS_2005 appraiser for Brilliant and Prince cuts is added.
  • AGS Spread parameter is available.
  • AGS Angular Spectrum Evaluation Tool lighting (ASET) is added.
  • The possibility to choose the RGB primaries for color correction is available.

Please read the detailed description

06.09.2005 GemAdviser 1.4

New version of the GemAdviser is released.

The GemAdviser 1.4 has the following updates:

  • Transformation of coordinates XYZ to coordinates sRGB is realized at an output the image to the screen of the monitor. It has improved a colour rendition.
  • New button with photo camera allows saving the picture in JPEG and BMP file.
  • Several lighting modes have been added:
    • ASET 30 Black
    • Hearts & Artrows
    • Al Gilbertson + White
    • Leakage
    • Fish-eye evaluation
Download the GemAdviser free version

11.01.2005 DiamCalc FAQ

New page with FAQ of DiamCalc is available.

16.12.2004 AGA system for DiamCalc is updated

We updated AGA system for DiamCalc instead of previous cut grade system of 1999 year. Now we use information of 2004 year from www.gemappraisers.com. Grade systems for fancy cuts like Princess, Marquise, Emerald are renewed.

For using the new AGA cut grade system please follow the instruction:

  1. Download the new file Appraise.txt.
  2. Replace the file Appraise.txt in folder where you installed DiamCalc with new one which you download (default folder: C:\Program Files\OctoNus Software\Diamond Calculator 2.3.1).
  3. Restart DiamCalc.exe.

Detailed description of DiamCalc appraisers.
How to modify appraiser data.

13.05.2004 DiamCalc 2.3.1, GemCalc 1.3.1

New updates of the DiamCalc and GemCalc are released.

Download DiamCalc 2.3.1
Download GemCalc 1.3.1

20.04.2004 DiamCalc 2.3, GemCalc 1.3, GemAdviser 1.3

New versions of the 3DCalc family products are released.

The DiamCalc 2.3 has the following updates:

  1. BLR calculation is allowed for non-round cuts. The table's area is taken into account.
  2. The algorithm for calculation of photoreal images is changed. It takes into consideration now the changes in the angle of divergence of non-parallel beams during refraction.
  3. The calculation of Leakage mono and Leakage Stereo in Cut Quality estimation was disabled at this time. We have calculated integral leakage value before. It was not correct, because weak leakage does not make Brilliance worse. But the weak leakage over large area may give the same integral coefficient as a strong leakage over small area. That it why it is necessary to change the approach to leakage estimation. We have not found the new correct formula yet.
  4. Added possibility to edit imported convex cuts of any format, not only GemCad ASCII. Implemented parameters: average diameter; crown, pavilion heights; distance between crown and pavilion; culet and table offsets in horizontal plane
  5. The OctoNus Helium software can now export model of the scanned diamond and its parameters to DiamCalc's DMC file. DiamCalc can read such files and display the scanned model and its parameters. DiamCalc can generate the same reports on scanned diamond as Helium does using the data provided by the Helium.
  6. The new "Radiant" cut was added.
  7. Restored the red-blue stereo mode.
See the detailed list of new features and fixes in the DiamCalc 2.3.

The GemCalc 1.3 has the following updates:

  1. The algorithm for calculation of photoreal images is changed. It takes into consideration now the changes in the angle of divergence of non-parallel beams during refraction.
  2. Added possibility to edit imported convex cuts of any format, not only GemCad ASCII. Implemented parameters: average diameter; crown, pavilion heights; distance between crown and pavilion; culet and table offsets in horizontal plane
  3. The OctoNus Helium software can now export model of the scanned diamond and its parameters to 3D-Calc's DMC file. GemCalc can read such files and display the scanned model and its parameters. GemCalc can generate the same reports on scanned diamond as Helium does using the data provided by the Helium.
  4. The new "Radiant" cut was added.
  5. Restored the red-blue stereo mode.

See the detailed list of new features and fixes in the GemCalc 1.3.

17.04.2003 GemAdviser 1.2

We are glad to inform you that the GemAdviser 1.2 (build 28) is released and available for download.

23.04.2003. DiamCalc appraiser fix: updated AGS girdle estimation
Updated appraiser file (Apprice.txt):

The DiamCalc appraiser for the AGS system performs the girdle thickness estimation incorrectly. (It was configured to perform girdle thickness estimation similar to GIA data but the AGS has different rules for girdle estimation). The correct data for AGS girdle estimation is included now in the updated appraiser file. If you need quick solution for this problem then please replace the older appraise.txt file in the DiamCalc folder with this new one: Appraise.txt, otherwise you may want to wait until the next DiamCalc release that will include this fix.

Another known issue about the appraisal is that the DiamCalc data for GIA estimation of girdle thickness entered as percentage or mm value is valid only for diamonds of size from 3.80 mm to 8.25 mm, for the diamonds out of this range DiamCalc gives incorrect GIA estimation of the girdle thickness (this issue doesn't apply to girdle thickness entered as word description). This issue will be fixed by the end of the May 2003.

07.03.2003. DiamCalc 2.2.1
version 2.2.1 build 265

February 25, 2003. DiamCalc version 2.2.1 (build 255) is released.

The DiamCalc 2.2.1 has the following updates:

  • The "Emerald" cut has two additional parameters (on the Advanced 2 tab) that define cutting of the rectangle corners: "Corner facets" and "Corner facets ratio";
  • Import from TXT file with parameters recognizes additional parameter: second diameter. See SampleImport.txt for example;
  • Zoom in/zoom out commands may be invoked by rotating the mouse wheel;
  • When the user chooses one of the predefined lightings the photoreal visualization automatically turns on if it wasn't activated already;
  • The FAQ section is added to the Diamond Calculator user manual;
  • During import from PACOR MMD files all non-convex facets are triangulated to guarantee that all imported facets are convex.

The following bugs were fixed in the DiamCalc 2.2.1

  • The position of the observer's head is visualized correctly now in the "multiple rays from eye" mode;
  • The "Table diameter" parameter in "Princess" cut works correctly now;
  • Consequent Zoom in and Zoom out commands does not change zoom factor now;
  • In some cases some facets of the model were not highlighted;
  • In some cases some parts of the ray in the ray tracing mode were not displayed properly;
  • When the model had significant displacement from the origin of coordinates in DXF file, this model was imported incorrectly;
  • During import from DXF, MMD, SRN files the orientation of the model is checked and if the table is not at the bottom, the whole model is turned upside-down.
  • Hotfix: the DiamCalc 2.2.1.265 (March 7, 2003):
    In the version 2.2.1.255 in the GemCad ASCII files import panel crown, pavilion and girdle parameters were frozen and displayed value "0". It is fixed in the build 265.

See DiamCalc versions history for the list of new features in previous versions.

03.03.2003 GemCalc 1.2
version 1.2

We are glad to inform you that the new version of GemCalc 1.2 is available for download.

The GemCalc 1.2 has the following new features:

  • The "Emerald" cut has two additional parameters (on the Advanced 2 tab) that define cutting of the rectangle corners: "Corner facets" and "Corner facets ratio";
  • Added 6 informative parameters for the brilliant cut describing details of the crown and pavilion angles. They are useful when dealing with gems that have deviations from ideal round girdle shape (Angles details tab);
  • Added the possibility to view and save to a file graphical illustration of the map of current light sources (Options > Advanced > Lighting map);
  • Added brain picture options to the Head and eyes configuration dialog (Options > Advanced > Lighting configuration > Observer > Head and eyes);
  • Added import of text files containing cut parameters. For the format of these files see SampleImport.txt file (Cut > Import cut > From TXT file with parameters);
  • Export of the generated movie into AVI format using the codec selected by user. This command is available in the movie menu on the toolbar, or in the main menu (Options > Animation > Movie > Export to AVI);
  • Non-spatial animation in movies. The movie may be generated by changing gem parameters (crown and pavilion angles). This feature is available through the path type menu on the toolbar, or through the main menu (Options > Animation > Figure > Reverse Crown vs. Pavilion, Direct Crown vs. Pavilion, Crown variation, Pavilion variation, OctoNus-MSU Crown vs. Pavilion);
  • The "Movie recording options" dialog box provides a possibility to set the step of animation figure parameters change when applicable;
  • Added "Reset diamond to table-up position at movie start" option to the "Movie recording options" dialog box. It allows to preserve the current diamond orientation and to start the spatial animation from the chosen position or from the "table-up" position;
  • Added "Draw diamond wire-frame profile in the corner" option to the "Movie recording options" dialog box. It allows to lay the diamond wire-frame profile on the movie frames during recording to illustrate how the diamond parameters (crown and pavilion) change;
  • In the ray-tracing mode the spatial animation takes into consideration options for objects rotation (rays, gem or both).
  • Added the possibility to load JPEG images as background (Options > Background color > Picture > Set picture);
  • The background picture is now placed in the center after load by default. The background is easier to move now to match the current gem model (Options > Background color > Picture > Adjust position);
  • Zoom in / zoom out commands may be invoked by rotating the mouse wheel;
  • When the user chooses one of the predefined lightings the photoreal visualization automatically turns on if it wasn't activated already;
  • The FAQ section is added to the Gem Calculator user manual.

The following bugs were fixed in the GemCalc 1.2

  • The position of the observer's head is visualized correctly now in the "multiple rays from eye" mode;
  • The "Table diameter" parameter in "Princess" cut works correctly now;
  • Consequent Zoom in and Zoom out commands does not change zoom factor now;
  • In some cases some facets of the model were not highlighted;
  • In some cases some parts of the ray in the ray tracing mode were not displayed properly;
  • When the model had significant displacement from the origin of coordinates in DXF file, this model was imported incorrectly;
  • During import from DXF files the orientation of the model is checked and if the table is not at the bottom, the whole model is turned upside-down;
  • If the selected background color differed from black, then adjusting the position of the background picture caused corruption of the solid background;
  • When saving an image of the current model with the background picture set in a high resolution, the background picture was not zoomed accordingly;
  • Setting of the standard light or changing the observer parameters corrupted the "Distance between eyes" parameter set by the user.