Metamolecular Company Blog Feed

ChemWriter 1.3.1 Resolves Issue With Overlapping Atoms

Mon, 30 Jun 2008 14:35:55 GMT

ChemWriter 1.3.1 is now available for download.

This version resolves an EditorApplet issue in which molfiles containing two or more atoms with exactly the same 2D coordinates were not displayed properly.

Better Drawing With ChemWriter 1.3.0

Mon, 16 Jun 2008 11:40:48 GMT

ChemWriter 1.3.0 is now available for download.

This version improves the usability of the drawing interface by adding new capabilities for controlling mouse cursor hover radius, and whether heteroatoms can be placed into empty space with keyboard shortcuts. The following four methods are now available to EditorApplet:

getHoverRadius - Returns the hover radius, or the radius around which atoms will be detected as being hovered over by the mouse cursor. This is also the radius around which the circle indicating a highlighted atom or bond will be drawn.
setHoverRadius - Sets the hover radius, or the radius around which atoms will be detected as being hovered over by the mouse cursor. This is also the radius around which the circle indicating a highlighted atom or bond will be drawn.
isPreventStrayHeteroatoms - Returns true if stray heteroatom protection is enabled, or false otherwise. Stray heteroatom protection will disable keyboard shortcuts for heteroatoms placed into empty space, i.e., not connected to a neighboring atom.
setPreventStrayHeteroatoms - Determines whether stray heteroatom protection will be enabled or not. Stray heteroatom protection will disable keyboard shortcuts for heteroatoms placed into empty space, i.e., not connected to a neighboring atom. Enabling this feature makes it more difficult for a user to draw a structure in which disconnected heteroatoms appear. Disconnected heteroatoms can still be drawn by choosing the atom label tool.

As with all other ChemWriter accessors, the corresponding object tag parameters can also be set:

hoverRadius
preventStrayHeteroatoms

ChemWriter 1.2.1 Improves the Handling of Stereo Bonds

Mon, 05 May 2008 10:12:19 GMT

ChemWriter 1.2.1 is now available for download.

This version resolves two issue related to creating and editing wedge and hash bonds (stereo bonds):

Clicking on a stereo bond when the bond tool is activated gives a non-stereo bond that can then be cycled through single/double/triple bond multiplicity.
Clicking on a multiple bond when the wedge or hash bond tool is activated now results in the multiple bond being replaced with a wedge or hash bond, respectively.

Better Rendering Control with ChemWriter 1.2.0

Fri, 04 Apr 2008 08:57:05 GMT

ChemWriter 1.2.0 is now available for download. This version includes support for improved rendering control and a convenience method:

Implemented isBlank() for both EditorApplet and PainterApplet.
Implemented virtualizeHydrogens parameter and accompanying is/setVirtualizeHyrogens methods for both EditorApplet and PainterApplet.
Implemented get/setBorderWidth method to accompany existing borderWidth parameter.
Implemented get/setLineEndPadding, which allows for proportional spacing between the end of a line and the atom labels with which it meets.

ChemWriter 1.1.6 Includes Enhanced Demos

Tue, 25 Mar 2008 15:48:10 GMT

ChemWriter 1.1.6 is now available for download.

This version features revised demos illustrating typical uses of ChemWriter:

Simple Editor Deployment
Transferring Structures
Interactive Editor API
Interactive Painter API
Preloading the Editor
Table View
Cell View
Installing Java

All demos can also be viewed in a different form on the ChemWriter Demos Page. The “Installing Java” demo uses client-side JavaScript browser detection to redirect users to a browser-specific Java installation help page. This approach is complementary to the one used with metamolecular.com, which employs server-side browser detection.

Also included in this release is support for reading molfile V2000 “Atom Aliases,” which are written by some software packages.

A New Look and Better Documentation

Wed, 12 Mar 2008 00:35:53 GMT

You may have noticed some changes to the Metamolecular company website in the last few days. The entire site has been redesigned to make it easier to navigate and especially to increase the usability of the ChemWriter documentation.

New ChemWriter demonstrations have been added; both these and existing demonstrations can now be found on the ChemWriter Demonstrations Page. Watch this page for new demos - especially those that show ChemWriter being used like any other HTML element - being dynamically resized, appearing and disappearing via CSS manipulation, being programmed with JavaScript, and pushing/pulling data from a server asynchronously to name a few.

For those drawing structures with ChemWriter, a concise keyboard shortcut synopsis may be useful in getting the most out of the editor.

ChemWriter licensing has been clarified on the ChemWriter Licensing Page, which discusses three options: Domain License, Subdomain License, and Custom License.

Finally, because ChemWriter is deployed as a Java applet, we thought it essential to address the issue of working with applets on the open Web head-on. The ChemWriter developer section hosts a growing number of tutorials relating to the deployment and use of Java applets, with an emphasis on doing so in heterogeneous networks. One article in particular, “ChemWriter Deployment”, outlines the preferred, standards-compliant and cross-browser method for deploying ChemWriter.

We hope you like the changes to the site. Please feel free to offer your comments and suggestions.

ChemWriter 1.1.5 Exports Valid Molfiles in European Locales

Tue, 19 Feb 2008 11:17:10 GMT

ChemWriter 1.1.5 is now available for download.

This version resolves an issue in which ChemWriter exported invalid molfiles for clients having desktop locales set to Europen countries.

ChemWriter 1.1.4 Update

Sun, 17 Feb 2008 11:14:46 GMT

ChemWriter 1.1.4 is now available for download.

This version resolves the following issues:

Lasso now remains the same width regardless of structure magnification
Cyclic, tetrasubstituted double bonds with a substituent bond angle of 180 degrees no longer result in a thrown exception
Minor issues relating to the placement of the second line in cyclic, tetrasubstituted double bonds.

ChemWriter 1.1.3 Displays Densely-Coordinated Molfiles

Thu, 14 Feb 2008 11:12:14 GMT

ChemWriter 1.1.3 is now available for download.

This version resolves an issue in which molfiles specifying a median bond length much less than 1.0 were rendered incorrectly (see comparison below).

ChemWriter 1.1.3

ChemWriter 1.1.2

ChemWriter 1.1.2 Improves Rendering for Tetrasubstituted Double Bonds

Tue, 12 Feb 2008 11:10:22 GMT

ChemWriter 1.1.2 is now available for download.

This version resolves an issue in which certain tetrasubstituted double bonds appearing in rings were rendered incorrectly (see below).