Search found 40 matches

by CVH
Mon Sep 10, 2018 10:28 am
Forum: Chat
Topic: Simplify splines
Replies: 1
Views: 708

Simplify splines

Browsing looking for "simplify" "splines" "QCAD" lead me to: https://www.qcad.org/doc/qcad/latest/developer/class_spline_simplify.html and this refers to: SplineSimplify.js Nor the method exist in QCAD3.21pro to my knowledge. nor the script file can be found anywhere. Simplifying Polylines with arcs...
by CVH
Mon Aug 27, 2018 12:40 pm
Forum: Chat
Topic: Explode spline to polyline with line segments
Replies: 2
Views: 944

Re: Explode spline to polyline with line segments

[quote=andrew post_id=21574 time=1535367473 user_id=2] N segments are created per control point. [/quote] ??? Fitpoint spline has 10 fit points and 14 knot vectors. Control spline has 12 control points and 14 knot vectors. Both splines are qubic and have 9 segments. Yields: N=2 => 73 vertexes = 9 x ...
by CVH
Mon Aug 27, 2018 12:24 pm
Forum: Chat
Topic: Different kinds of splines.
Replies: 3
Views: 1335

Re: Different kinds of splines.

So the third kind is suported if originated from 3d party?
by CVH
Sat Aug 25, 2018 10:05 am
Forum: Chat
Topic: Different kinds of splines.
Replies: 3
Views: 1335

Different kinds of splines.

Andrew, Still version 3.21.1.0 ; Win7 32bit. In QCAD we can draw splines by fit-points and control-points. An example of those are in the example included. On investigation the spline in the post of benjamindahl is a different kind: https://www.qcad.org/rsforum/viewtopic.php?f=47&t=4859#p21518 Stepp...
by CVH
Sat Aug 25, 2018 9:20 am
Forum: Chat
Topic: Explode spline to polyline with line segments
Replies: 2
Views: 944

Explode spline to polyline with line segments

Andrew, Still version 3.21.1.0 ; Win7 32bit. Is there a reason why exploding splines to polylines with line segments yields 4 times the number of nodes per segment set in App Prefs. Example included. reading http://www.qcad.org/bugtracker/index.php?do=details&task_id=1479 This should be 2 in version...
by CVH
Fri Aug 24, 2018 3:57 pm
Forum: QCAD Tips and Tutorials
Topic: Exploding Splines
Replies: 18
Views: 9690

Re: Exploding Splines

That is developer stuff. Followed the code to: > if (RSpline.hasProxy() && !splinesToLineSegments) { > pl = spline.approximateWithArcs(splineTolerance) And can't find out where it is treated further. The first link looks promising at first but there is a catch to it: "provided that the cage formed b...
by CVH
Thu Aug 23, 2018 5:00 pm
Forum: QCAD Tips and Tutorials
Topic: Exploding Splines
Replies: 18
Views: 9690

Re: Exploding Splines

[quote=benjamindahl post_id=21543 time=1535022263 user_id=7562]
We want less deformation on particual points on the curve
[/quote]
For this Biarc-fitting should be done optimal.

Regards.
by CVH
Wed Aug 22, 2018 7:51 pm
Forum: QCAD Tips and Tutorials
Topic: Exploding Splines
Replies: 18
Views: 9690

Re: Exploding Splines

Andrew, all, I don't think a simplifying step as that of eMachineShop will induces sharp corners. Simplifying or smoothing for CNC is to get rid of corners, short segments and enhance tangency. About earlier posts, Guys!? The accuracy scale, please. Better than 0.05 on a piece that is 2800 high and ...
by CVH
Mon Aug 20, 2018 8:48 pm
Forum: QCAD Tips and Tutorials
Topic: Exploding Splines
Replies: 18
Views: 9690

Re: Exploding Splines

Mentioned this too halfway this post:
https://www.qcad.org/rsforum/viewtopic.php?t=5566
by CVH
Fri Jun 08, 2018 6:22 pm
Forum: QCAD Suggestions and Feedback
Topic: Nice and powerful, but veeeeery slow on big files
Replies: 18
Views: 11359

Re: Nice and powerful, but veeeeery slow on big files

When the zoom level changes to 10<100 and beyond less texts are in the viewwindow and more screen updates are made. The texts in the example become readable in the 5th level passing from 100<1000 to 10<100. It's not the zoom level but how many texts items that are in the picture that slows the syste...
by CVH
Fri Jun 08, 2018 5:23 pm
Forum: QCAD Suggestions and Feedback
Topic: Nice and powerful, but veeeeery slow on big files
Replies: 18
Views: 11359

Re: Nice and powerful, but veeeeery slow on big files

Could it be that the bottleneck is the 64 vs 32 bit OS?
by CVH
Fri Jun 08, 2018 9:26 am
Forum: QCAD Suggestions and Feedback
Topic: Nice and powerful, but veeeeery slow on big files
Replies: 18
Views: 11359

Re: Nice and powerful, but veeeeery slow on big files

Never had 2400 text items on my screen. My 55Mbyte file consist of 3200 items with about 600 polylines with up to 4000 segments and about 100 text items. With all text of your example displayed, zoom level 100<1000, I have about 3 screen updates per second on my quite old system. With zoom level 10<...
by CVH
Sat Jun 02, 2018 9:15 pm
Forum: QCAD Suggestions and Feedback
Topic: Nice and powerful, but veeeeery slow on big files
Replies: 18
Views: 11359

Re: Nice and powerful, but veeeeery slow on big files

10 year old PC win7pro 32 bit 4GB 1e generation i7 2.6Ghz. HDD GeForce GT 520 Not that fancy at all. UserBenchmarks: Game 12%, Desk 46%, Work 20% CPU: Intel Core i7-2600K - 69% GPU: Nvidia GeForce GT 520 - 2.2% HDD: WD Blue 1TB (2010) - 60% RAM: Corsair CMZ4GX3M2A1600C9 4GB - 47.8% MBD: Asus P8H67-M...
by CVH
Sat Jun 02, 2018 4:18 pm
Forum: QCAD 'How Do I' Questions
Topic: center of gravity
Replies: 2
Views: 1524

Re: center of gravity

https://en.wikipedia.org/wiki/Centroid
Sroll down to
Centroid of a polygon

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