From: "Jochen Vandewalle" <[EMAIL PROTECTED]>
Sent: Wednesday, October 04, 2000 3:16 AM
Jochen,
If you plan to do drag and drop construction of planar mechanisms, a 2D
schematic on a separate Graphics2D (or Graphics) screen might be all you
need. If you plan to build spatial machines, you probably want to compose
in 3D on the Canvas3D itself. There's enough traffic on this list about
problems using Graphics2D with Canvas3D that I won't bother trying it. It
may just be Fear, Uncerainty, and Doubt, but I have enough grief in my life
already. If you try it and you have success, by all means tell us here.
FreeCAD (ftp://ftp.simtel.net/pub/simtelnet/win95/cad/) is a powerful
mechanism builder with a nifty 3D construction interface. Aik-Siong Koh,
who wrote it, also has written an AutoCad add on for kinematics and
dynamics.
I have some simple planar mechanisms up at www.vmech.com , and some time
this winter I'll add a 2D panel that will permit modification of the
mechanisms on a 2D schematic. I haven't been in a hurry to implement a
construction interface because I haven't come up with a sensible way to
limit the input geometries to stable, solvable ones.
It'll be some time before I get around to a construction interface, but when
I do, it'll start with some kind of dual display of the scene graph in a
tree viewer and the model displayed on a Canvas3D. I like the FreeCad
interface so much that it will be hard for me not to copy it.
Cheers,
Fred Klingener
Brock Engineering
> We're creating a application to draw simple machines with Java3D. We can
> load files into a Canvas3D, these files can be full machines or parts of a
> machine. We will use a drag 'n drop system to put a machine together.
> The question is if it's possible to create a Graphics2D from a Canvas3D,
> make changes in this Graphics2D and reverse it to a 3D file. By making
> changes I mean to drag machine parts, in form of rectangles or other
shapes,
> on the Graphics2D. The user can possition and translate the parts. After
> this the user can switch to the Canvas3D where the changes come vissible.
>
> Is this possible and if it is, what is the best way to do this.
>
> ---------------------------------------------------------------------
> Jochen Vande Walle
> Software Developer
>
> QMatics
> Bruggesteenweg 112
> 8830 Hooglede - Belgi�
> ---------------------------------------------------------------------
> Tel. +32 51 272 400
> Fax. +32 51 272 401
> ---------------------------------------------------------------------
> mailto:[EMAIL PROTECTED]
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