Smooth switch from orthogonal to perspective

[Christiaan]

At the moment you need to go through what feel like endless adjustments to set a perspective view. I'd like to be able to switch from an orthoganal view to perspective and have VW calculate the perspective view based on the orthoganal view I just came from.

[islandmon]

Christiaan, please clarify:

Rotate view >goto>View>Set Perspective... viola ... a perspective of the View

based on the distance as narrow,normal,wide or any other depth.

What am I missing ?

[propstuff]

EJ,

That works sort of OK if the objects are centred on the origin

The Perspective window, like all standard view changes defaults to centring and is a minor pain for all non centred objects.

In the past I've Wished for the option to have view changes centred on the selected object, but there was no interest in this to speak of.

N.

[G_Hannigan]

Nicholas,

The need to relocate objects after changing views is the main reason why I yearn for multiple views. This has been a major pain to me since I started with Minicad 6.

George

[Guest]

How about using the RenderWorks camera object and then set the OIP option to display view from camera?

[propstuff]

Katie, that's ok but presumes you've got RW....

N.

[Christiaan]

Christiaan, please clarify:

Rotate view >goto>View>Set Perspective... viola ... a perspective of the View

based on the distance as narrow,normal,wide or any other depth.

What am I missing ?

As per Nicholas' comments, but even if it is centred on the origin my perspective is very distorted and very difficult to adjust to look roughly like the orthogonal view.

Maybe I'm missing something? Here's an example of a drawing set to an orthogonal view. If you like, give it a go and tell me how many clicks and how much time you need to have the same orthogonal view, but in perspective.

How about using the RenderWorks camera object and then set the OIP option to display view from camera?

Better but still fidgety and as Nicholas points out, not always an option.

[G_Hannigan]

Use Saved Views - one for each Ortho, one for corresponding Persective. Not exactly what you are asking for - requires setting them up and you may end up with a lot of Saved Views!

[Christiaan]

Yeah I'm using Saved Views. It's the setting up in the first place that shouldn't need to be so onerous.

[G_Hannigan]

Since everyone has a different "perspective", whose becomes the default? Perhaps a setting in the View Menu that could be pre-adjusted to act as the user's default when switching from any Ortho view to the corresponding Perspective.

George

[propstuff]

Since everyone has a different "perspective", whose becomes the default?

My first thought on this is that if you have an Ortho view that, say, fills the screen; then going to Perspective should give a view that fills the screen from the same point of view, and at "Normal" perspective (IE whatever distance it takes to fill the screen).

This seems intuitive to me, but would undoubtably take some juggling of the algorithm which seems to make the distance static and crops the view to suit that.

cheers

[G_Hannigan]

" going to Perspective should give a view that fills the screen from the same point of view, and at "Normal" perspective (IE whatever distance it takes to fill the screen)."

This is what I was referring to in the second part of my last post.

"would undoubtably take some juggling of the algorithm"

Which is why I don't think we'll see this change any time soon.

George

[P Retondo]

My first thought on this is that if you have an Ortho view that, say, fills the screen; then going to Perspective should give a view that fills the screen from the same point of view, and at "Normal" perspective

Nicholas, interesting idea. I wonder if the program "knows" what is on the screen, given that screens and windows can be of different sizes on different machines. No problem, the user could be asked to marquee the frame of the desired perspective.

But then the problem becomes how the program would interpret the depth of the defined frame, whether it be the screen or a marquee. In other words, some of the objects in the foreground on your screen would be "clipped" unless we are allowed to see more of objects at a distance in the perspective view - just thinking as I go here. That actually doesn't sound like too bad a tradeoff.

PS: Christiaan, couldn't view the drawing in your link.

[Christiaan]

My first thought on this is that if you have an Ortho view that, say, fills the screen; then going to Perspective should give a view that fills the screen from the same point of view, and at "Normal" perspective (IE whatever distance it takes to fill the screen).

Exactly.

PS: Christiaan, couldn't view the drawing in your link.

Hmm, could anyone else open it? Redundant anyway I guess because everyone seems to understand what I'm saying anyway.