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DiamCalc
What is new in the DiamCalc 2.3.1?

May 13, 2004 DiamCalc 2.3.1 is released.

  1. Added export of the model to binary and ASCII stereolithography format (STL). See "Cut" - "Export cut" menu.
  2. Fixed bug: "If the DMC file was opened by double-click on it and consequent automatic load of the DiamCalc, the DiamCalc mistakenly displayed a message saying that the DMC file was made with more recent version of DiamCalc".

What is new in the DiamCalc 2.3.0?

April 20, 2004 DiamCalc 2.3.0 is released.

New features

  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. We have calculated integral leakage value before. It was not correct, because weak leakage does not make Brilliance worse (see the plot below). 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. Non-convex cut are imported, but without the possibility of editing. It is allowed to create an editable convex hull during import of non-convex model. Press "Advanced" button in the parameters panel to open the new window. This button becomes available after import of some cut. Advanced editing of the convex imported cuts allows adjusting the position of any facet. The new GUI of advanced editing allows viewing the model from up to four views with arbitrary zoom and displacement. Use left mouse button to rotate the model, right mouse button to move the model and mouse wheel to change zoom. For more detailed description of the new window see the "Adjusting shape of arbitrary imported 3D model of the diamond" section in the manual.
  5. The OctoNus Helium software can now export model of the scanned diamond and its parameters to DiamCalc 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. For more information about Helium please visit Helium system page. For detailed description of the new reports see the "Creating diamond reports" section in the manual.
  6. The new "Radiant" cut was added.

  7. Restored the red-blue stereo mode (menu "View" - "Stereo mode ON").

  8. Added special lighting for better viewing of the photoreal images in red-blue stereo mode (menu "Options" - "Special view" - "Red-blue stereo"). This is just another lighting, which may be turned on in usual mono mode, as well as any other lighting may be turned on in red-blue stereo mode. The settings for this lighting are picked up in such a way, so as to make the perception of the 3D effect of the photoreal image of the model easier.
  9. Other cut quality results became slightly different also. Two years ago we began to develop a new visualization algorithm that would take into account the finite dimensions of the eye aperture, depth resolution, astigmatism, etc. This is necessary for correct estimation of Scintillation and Fire. We need to switch to another model of light propagation for it. This work is not finished yet, but we have included one of our intermediate results in this version. Our tests showed that the new program simulates the photo much better in cases when the ray leaves the diamond at an angle close to critical. We have done it more that half a year ago and have not announced it till now, because we hoped to finish the work completely. As it turns out we need at least half a year more, so we decided to make a partial upgrade of the modeling algorithm right now.
  10. The default quality of photoreal image calculation for round shape is increased. The number of ray reflections for pattern calculation is set to 4, for intensity calculation is set to 30, the same as for fancy shapes.
  11. The IdealScope lighting settings are corrected.

    DiamCalc 2.2.1 DiamCalc 2.3.0

  12. The lightings "HA Table" and "HA Pavilion" are combined into one "Hearts & Arrows". Now turning on the "Hearts&Arrows" lighting does not change the simulation parameters and does not rotate the stone. Use "Top view" and "Bottom view" buttons to view the stone from the table and pavilion sides.

    Top view Bottom view

  13. Import from TXT file with parameters recognizes two additional parameters: Star Facets, Lower Facets. See SampleImport.txt for example.
  14. Added possibility to export arbitrary convex model to GemCad ASCII format.
  15. The format of DiamCalc DMC files for scanned cuts was changed to enable advanced cut editing. Consequently, the format of GemAdviser GEM files was changed also.
  16. The background color for photoreal image is taken from the lighting settings. Different splitted views use different light sources. The background may be of any color and is displayed using the monitor settings (gamma).
  17. The background color for draft models is not connected to lightings.
  18. The background picture is not removed when the background color is changed. Added a new menu item for removing the background picture.
  19. Added "Batch processing" command to the "Cut" menu. It allows converting a series of files from Sarin SRN format into GemAdviser GEM format.
  20. Added command to movie menu that allows appending of the movie to existing one. Load the first movie as usual; use "Append" command of the Options -Animation - Movie menu to choose another movie file for appending. The second movie should have the same quantity of frames, the same vertical size of the frame and the same color depth as the first movie. It is recommended to use true-color movies for this operation. If movies have 8 bits color depth, the palette of the first movie is used.
  21. Side azimuths are displayed in the range of [0; 360] degrees.
  22. Status line shows the current frame size.
  23. In the ray tracing mode the status line shows the current mode (Power/Intensity) and the wave length for which the values over the rays are drawn.
  24. Added "Bottom view" button to the toolbar.
  25. Added "Always on top" option to the "View" menu.
  26. The "Heart" cut was corrected and updated.

Fixed bugs

  1. Fixed girdle thickness AGS appraiser. It uses "Girdle Height" parameter measured in percents now instead of millimeters.
  2. The "Lower facets" parameter was removed from all appraisers except "Russian".
  3. The "Incandescent lamp" lighting now switches off correctly.
  4. The "Firescope" lighting sets the lens parameters to definite correct values.
  5. When the "Smart bright" mode in the lighting was enabled, it was impossible to switch to draft view.
  6. Some simulation parameters were not saved in DMC file, like eye color adaptation, lens parameters, special view settings used for evaluation of fish eye, light leakage, light return and contrast. Fixed saving of simulation parameters to DMC file.
  7. Fixed setting of "Prism" cut parameters.
  8. The button of the "Fish Eye" parameter in cut quality estimation now shows a short description.
  9. Fixed import of cuts.
  10. Fixed import from DXF format - the resulting cut was mirrored.
  11. Fixed import from the GemCad ASCII format. The cuts with clockwise direction of gear teeth and non-zero bottom index are imported correctly now.
  12. If the file already existed during movie export to AVI file it was not truncated to new size.
  13. If the generated movie has 8 bits per pixel, it is converted to 24 bits per pixel during its export to AVI without compression, because standard movie player does not playback movies with 8 bpp.
  14. The DiamCalc did not clear its window contents during movie playback which could lead to garbage on screen.
  15. Fixed drawing of the model in the Word report. Now all models are drawn exactly the same as they are drawn on screen after using "Top view" and "Bottom view" toolbar buttons.
  16. Minor fixed in Word report template.
  17. Fixed highlighting of sides in the model.
  18. The menu item "Prices" shows checkmark when the prices are shown.

Versions history