Peter Clifton wrote:
I've been looking for a format to import 3D models of components for
a quick rough viewing within PCB.
fair enough.
I'm hoping that there will be a route to do:
Serious component model in CAD - VRML for use within PCB.
With my current 3D CAD application varicad,
Peter Clifton wrote:
I'm coming round to the idea that 3D is more than just eye candy if we
do it nicely. It helps visualise component placement and layout issues
far more readily than just looking at flat layers can do. Your brain may
spot issues it wouldn't otherwise.
One of the things I
ff they are rendered as (transparent) pipes.
To help save computing time, the layers in 3D can be just flat (in a
mode) - no point
in seeing the sidewalls of traces for many uses, e.g. the above one.
That is basically how PCB+GL renders the board. Z isn't very expanded,
but you can make
On 11/19/2010 05:02 PM, Peter Clifton wrote:
On Fri, 2010-11-19 at 13:06 -0800, Colin D Bennett wrote:
That suits me just fine.. OpenGL_likes_ rendering triangles, and any
other geometry primitives are extra work to implement;)
But wouldn't support for higher-level shapes be
Hi John,
-Original Message-
From: geda-user-boun...@moria.seul.org
[mailto:geda-user-boun...@moria.seul.org] On Behalf Of John Griessen
Sent: Saturday, November 20, 2010 5:13 PM
To: gEDA user mailing list
Subject: Re: gEDA-user: STEP Format? [WAS: Re: PCB+GL+3D Packages
Peter Clifton wrote:
That is basically how PCB+GL renders the board. Z isn't very expanded,
but you can make out the detail. Some work would be needed if you wanted
to reliably look through a section of board in a particular place
though.. possibly some adjustment of layer transparency would
On Fri, 2010-11-19 at 01:29 +0100, kai-martin knaak wrote:
Peter Clifton wrote:
stl (very nice)
IMHO, stl is a mesh only format. That is, everything is made of
triangles -- no squares, no circles, no real curvatures. There are
no macros, no loops, or repetitions.
That suits me just
On Fri, 19 Nov 2010 17:27:45 +
Peter Clifton pc...@cam.ac.uk wrote:
On Fri, 2010-11-19 at 01:29 +0100, kai-martin knaak wrote:
Peter Clifton wrote:
stl (very nice)
IMHO, stl is a mesh only format. That is, everything is made of
triangles -- no squares, no circles, no real
On 11/19/2010 03:06 PM, Colin D Bennett wrote:
Through-hole parts tend to have more round
shapes that would be much more expensive to accurately model with
triangle meshes: cylindrical resistors, disc-shaped ceramic capacitors,
etc.
STL seems to work fine for those shapes - your tool just
On Fri, 2010-11-19 at 13:06 -0800, Colin D Bennett wrote:
That suits me just fine.. OpenGL _likes_ rendering triangles, and any
other geometry primitives are extra work to implement ;)
But wouldn't support for higher-level shapes be superior to triangle
meshes for high-quality renderings
On 20/11/10 10:02, Peter Clifton wrote:
On Fri, 2010-11-19 at 13:06 -0800, Colin D Bennett wrote:
That suits me just fine.. OpenGL _likes_ rendering triangles, and any
other geometry primitives are extra work to implement ;)
But wouldn't support for higher-level shapes be superior to
On Sat, 2010-11-20 at 11:01 +1100, Russell Shaw wrote:
Are you using a spatial data structure to omit emitting polygons
for off-screen components?
PCB does that (spatial data-structures) already for rendering layers, so
yes. With the 3D perspective view, I fall back to rendering the whole
It looks like you are almost to the next step, but probably the
biggest value of having good 3d representations is the ability to do
clearance checking as a DRC. This is not just visualization, it is
rule-driven placement and flagging of errors when you place components
in conflict with each
On 20/11/10 11:43, kai-martin knaak wrote:
John Griessen wrote:
STL seems to work fine for those shapes - your tool just chooses
triangles that are long and skinny to accurately model the side
of a cylinder for instance.
... and the file size explodes. If the wires of thru hole components
Peter Clifton wrote:
I'm coming round to the idea that 3D is more than just eye candy
if we do it nicely.
yes!
It helps visualise component placement and layout issues
far more readily than just looking at flat layers can do.
Even better: It aids the process of enclosing design in a very
On Sat, 2010-11-20 at 11:59 +1100, Russell Shaw wrote:
If fewer polygons are used but with decent shading, the main effect
is that the silhouette has a few visible corners. That wouldn't matter
much for resistors.
http://en.wikipedia.org/wiki/Gouraud_shading
On 11/17/2010 09:41 PM, Peter Clifton wrote:
I'm not sure there is any colour information in any of the files,
I don't think STL export preserves color, and maybe not IGES either.
The Heekscad original had two colors
JG
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geda-user mailing
Peter Clifton wrote:
stl (very nice)
IMHO, stl is a mesh only format. That is, everything is made of
triangles -- no squares, no circles, no real curvatures. There are
no macros, no loops, or repetitions. A decent pcb would make for
a pretty large stl file if all the vias and pin holes were to
On Mon, 2010-11-15 at 10:09 -0600, John Griessen wrote:
On 11/14/2010 08:37 PM, Peter Clifton wrote:
3. What format would people like to make models in?
STEP, so I can load it in HeeksCAD and use HeeksCNC to carve enclosures.
Step looks obscenely complicated, and I'm not really sure what
Peter Clifton wrote:
On Mon, 2010-11-15 at 10:09 -0600, John Griessen wrote:
On 11/14/2010 08:37 PM, Peter Clifton wrote:
3. What format would people like to make models in?
STEP, so I can load it in HeeksCAD and use HeeksCNC to carve enclosures.
Step looks obscenely
On 11/17/2010 04:00 PM, Armin Faltl wrote:
If we need only a hand full of primitives to describe our parts, IGES is
probably
much easier and does the job. It's understood by practically all systems that
understand STEP, and some, that don't understand STEP.
Yes, HeeksCAD and many others can
On 11/17/2010 12:50 PM, Peter Clifton wrote:
Can someone send me a handful of __SIMPLE__ geometric models in a STEP
format (readable text?), so I can get a feel for what I'd be letting
myself in for?
I put an example with rectangular solid, cylinder and some lines in a triangle
at
On Wed, 2010-11-17 at 18:01 -0600, John Griessen wrote:
I put an example with rectangular solid, cylinder and some lines in a
triangle at
http://ecosensory.com/diybio/pcb-testing.zip
I'm not sure there is any colour information in any of the files, but to
me it would seem that the order of
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