Double bond -> single or triple bond

When the Bond button is selected, the first time you click on a double bond, it changes to a single bond. Each subsequent time you click on a double bond, it changes to a triple bond.





This behavior is annoying. It should be consistent regardless of when the button is pressed. I would rather see the following:





single -> double -> triple -> single





Single-click moves forward one step, double-click moves forward two steps.

We will consider your request.

It is better to minimize the number of clicks. Single bonds are created at least an order of magnitude more frequently than triple bonds. Hence it is more effective to associate only one click to single bond creation and two clicks for triple bond, than a random number of clicks for anything. Moreover, the current behavior is so consistent and simple that even a blind user could use it (supposing that he has a mute helper who leads his mouse over the bond but cannot tell its order). It is not a good idea to change it also because users are accustomed to it.

cspeter wrote:

It is better to minimize the number of clicks. Single bonds are created at least an order of magnitude more frequently than triple bonds. Hence it is more effective to associate only one click to single bond creation and two clicks for triple bond, than a random number of clicks for anything. Moreover, the current behavior is so consistent and simple that even a blind user could use it (supposing that he has a mute helper who leads his mouse over the bond but cannot tell its order). It is not a good idea to change it also because users are accustomed to it.

Okay, then do it this way:





Single click on single -> double


Double click on single -> triple


Single click on double/aromatic or triple -> single


Double click on double/aromatic -> triple


Double click on triple -> double





The issue is not which rule applies. The issue is consistency regardless of when the user has last pressed the Bond button.

You are right, something is wrong. Originally (Marvin 1.0 to at least 3.0) it worked exactly this way:

Quote:

Single click on double/aromatic or triple -> single

It was messed up sometime between 3.0 and 3.5.5. I will fix it.

Quote:

Double click on double/aromatic -> triple Double click on triple -> double The issue is not which rule applies. The issue is consistency regardless of when the user has last pressed the Bond button.

Triple click is needed for triple bond. It is consistent, the rule is the following:


1st click to anything else than single bond -> single bond


2nd click -> double bond


3rd click -> triple bond

I fixed it and also implemented half of your fourth rule. Rules:


- First click on single -> double, second click -> triple


- First click on double -> single, second click -> triple


- First click on triple or aromatic -> single, second click -> double, third click -> triple

cspeter wrote:

I fixed it and also implemented half of your fourth rule. Rules: - First click on single -> double, second click -> triple - First click on double -> single, second click -> triple - First click on triple or aromatic -> single, second click -> double, third click -> triple

I checked the alpha5 version, and it implements the rule I suggested below that you didn't like, i.e., single click on double gives triple.

Quote:

I checked the alpha5 version, and it implements the rule I suggested below that you didn't like, i.e., single click on double gives triple.

I built Marvin 4.0alpha5 Friday evening and Peter modified the code on Sunday.