point constraint bug with splines and handles ?

[cekuhnen]

here is a screencast showing some odd behaviors.

not being able to add a vertical constraint to the handle

moving the handle via the move tool is partically ignored

https://drive.google.com/open?id=0Byzv_NlyKp_2N19TbHNibGMyc3M&authuser=0

[mark2t]

Thanks cekuhnen, for the descriptive video.

I too have been experienceing this frustration with moving spline handles around. While in a sketch, we should NOT have to invoke the move tool to drag any entities around. End points and tangency handles should be movable by clicking and dragging. If an end point of a spline has been constrained to a point the tangency handle should still be free to move around unless a tangent or curvature constraint has been applied and then the handle length should still be draggable. 

I have also experienced issues with getting to select sketch entities while creating a sketch. I have been modifiying a t-spline body and have created a sketch while in the edit mode for that body ( I realize this sketch will not be parametric within the history timeline) The ghost image of the previous state of that body (I have hidden the body itself) gets in the way of selecting the sketch entities I am creating and modifying, as if the body were really there blocking access to those entities. This makes dragging entities impossible without first selecting them via the "selection depth" mouse hold and using the move tool. Not eithier intuitive or smooth work flow. While sketching, the sketch environment should take priority over all selections. Entities should be the default items selected and no move tool should be needed.

Also, the constraint dialog should be open by default without taking focus, and an option to apply when two sketch entities are selected. This is how SolidWorks handles constraints and is both intuitive and doesn't get in the way if you're not ready to apply constraints.

[cekuhnen]

I feel this constraint system for blend curves needs a make over. It is more problematic than functional. Compared to Alias it is rather painful and so much work, if it works.

[cekuhnen]

very good suggestions!

[innovatenate]

Thank you for the feedback!

I know there are some differences between moving the endpoints of tangent handles when you are doing a 2D vs. a 3D spline. In the beginning of the video, were the points that were included projected from 3D geometry that was not located in a single plane (= 3D spline vs. 2D spline)? Even if they are 2D, maybe there is something that is flagged when the include command is used....

I'll have to do some further testing to verify this.

I suspect the difference between the 2D vs. 3D spline is why the vertical and horizontal constraints may not be showing. If you just sketch a 2D spline, use the project to sketch command to create the sketch points, or use the move to sketch plane command (after break link command), does it change the behavior for the tangent handles? 

Not sure if I'm being very clear with the questions/suggestions.... let me know either way.

Thanks,

[cekuhnen]

there are a lot of inconsistencies in the way how the 2D sketch engine tries to work in 3d space to a degree it just feels forced and to be honest more work and less control then making an interactive cage in Alias where I can constrain curves as well and just only as far as I also need them.

I know the team tries to do something and the current version of the sketching engine isn't finale but each time I try to do something organic I want to throw Fusion out of the window because how complex the sketch engine is compared to Alias.

there are also a lot of bugs in the new current ultimate version from translation to drawing splines which makes the experience further painful currently.