screen pixel dimensions

All,

I think I recall some time back someone posting about this, a search
didn't turn up anything though.

Can the AutoCAD graphics screen size, in pixels, be captured somehow
with AutoLISP?

bobb

 

Is screensize in Pixels?

Oh dopey-me.

bobb

 

(vlax-get-property (vlax-get-acad-object) 'height)

(vlax-get-property (vlax-get-acad-object) 'width)


Bill

 

is that for mapping?
are you using image objects?

 

Yes. Currently I have a pretiled set of images at different
resolutions, but I'm moving everything over to a Dynamic image server,
so the images will always be sized correctly for the screen.

At some point I'll also write something to handle pulling images in for
plotting resolution as well in an automatic fashion.

bobb

 

Will this work for Vports as well? Paperspace and ModelSpace?

bobb

 

VIEWSIZE
(Read-only)
Type: Real
Saved in: Drawing

Stores the height of the current viewport in drawing units.

Use this with viewctr to calculate what you need.

Bill

 

These give a good approximation, but they also include the areas
occupied by the Menus and toolbars, in otherwords the whole of the
AutoCAD window occuping the windows desktop.

bobb

 

What exactly are you trying to do?


Bill

 

Pull an image from a Web server, like this:

http://pwultra5.ci.stpaul.mn.us/cgi...75&map=../html/raster/rswcd_1985.map&mode=map

at the appropriate screen resolution that will fill the graphics screen
in AutoCAD.

Later, I would also like to do the same for plotting where the Images
would be higher resolution depending on the plot size desired.

Like this:

http://pwultra5.ci.stpaul.mn.us/cgi...50&map=../html/raster/rswcd_1985.map&mode=map

Which is the same bounds as above but at a higher resolution

In oder to fit the image to the screen at the correct resolution for
viewing (on the monitor) I need the screen size, in pixels. Then I can
assemble the Image returned that would fill the screen without worrying
about interpolation happening. in other words I wouls always have the
correct image reoslution no matter the Zoom level. At least to the
limits that the Web server can serve them up in. Plotting for instance
may require that many smaller images are imported for a large plot like
an E-size for example.

I have enough from this thread to accomplish it, I'll just import images
slight larger than the AutoCad graphic screen is (Desktop window less
the borders and menu items) and leave the extra pixels off screen.

In the end, I want to build a modified Zoom command that will allow for
these areial view to be left on/off with a toggle, so the user doesn't
need to worry about importing them, they can just zoom/pan as they need to.

bobb

 

Cool,

(but way over my head)



Bill

 

Alright, now what the heck does this do?

hmmmmmm . . . .

oh I see, you set a pixel to Ground units ratio and use that as a
constant, cool, really cool actually.

So why do you suppose this isn't in there to begin with? Sheesh.

Thanks Luis!!

That will work perfectly, although I think it still will have a little
error in there with respect to Maximised vs not-maximised, right? I
mean, the image will still fill the screen in both cases, but there will
still be a bit of it off screen when the window is maximized.

bobb