Re: YAPDOR (yet another part disappears on render) question
In 'obj_points1' are a lot of almost equal points.
All multiples of ±0.25, they are just close and complicated written like
0.24999999999144
My guess is that you use in 'two()' (almost) the same points again and
again which causes a 3D skinning chaos..
Am Mi., 10. Nov. 2021 um 00:26 Uhr schrieb Gryffyn via Discuss <
discuss@lists.openscad.org>:
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Date: Tue, 9 Nov 2021 23:26:19 +0000 (UTC)
Subject: [OpenSCAD] YAPDOR (yet another part disappears on render) question
I see lots of posts online with similar issues, but the solutions I see
are about bugged older versions or one mention of an implicit "union" when
objects are rendered one after another. To get around that, I put the
objects in separate modules and it still does it. This is part of a
larger crude Christmas tree type design. I set up a thing to convert the
raw Earth2.io "holobuilding" data to OpenSCAD to generate a 3D model
outside of Earth2.io. Someone designed a Christmas tree type thing and it
was skipping some of the "branches". I cut down the code so it's just the
center trunk/pole and one branch that disappears when both are rendered.
Both show up in preview, but not render.
I feel like this question is asked a ton, but again.. didn't see any
answers that seemed to help my situation. I know it's going to be
"something stupid" (tm) so forgive my OpenSCAD ignorance.
Thanks in advance.
-Trevor
Version: OpenSCAD version 2021.01
Code:
one();
two();
module one() {
// stick
echo("Starting ONE");
translate([0, 0, 0])
linear_extrude(height=16)
polygon(points= [[0, 0],[-0.250000011875, -0.25000000096],[0,
-0.50000000101],[0.24999999732, -0.25000000096],[0, 0]]);
echo("Finishing ONE");
}
module two() {
echo("objpoints TWO start");
// small one
obj_points1 =[[-1.750000003085, -1.500000001215],[-0.250000011875,
-1.000000000205],[-0.500000009195, -1.250000001165],[-0.250000011875,
-1.000000000205],[0, -1.000000000205],[0, -1.750000000355],[0.24999999732,
-1.250000001165],[0.24999999732, -1.750000000355],[0.24999999732,
-1.000000000205],[0.24999999732, -1.250000001165],[0.24999999732,
-1.000000000205],[0.999999996565, -1.000000000205],[1.24999999389,
-1.250000001165],[0.999999996565, -1.000000000205],[1.74999999581,
-1.250000001165],[1.49999999121, -1.250000001165],[0.999999996565,
-1.000000000205],[1.24999999389, -1.000000000205],[0.999999996565,
-0.750000000155],[0.749999999245, -0.50000000101],[0.999999996565,
-0.50000000101],[1.74999999581, -0.50000000101],[1.24999999389,
-0.25000000096],[1.74999999581, 0],[0.999999996565,
-0.25000000096],[1.49999999121, 0],[0.749999999245,
-0.25000000096],[0.749999999245, -0.25000000096],[0.999999996565,
0.24999999914],[0.999999996565, 0.49999999919],[1.24999999389,
0.749999999245],[0.999999996565, 0.49999999919],[1.24999999389,
0.999999999295],[0.24999999732, 0.24999999914],[0.499999994645,
1.249999999345],[0.24999999732, 0.999999999295],[0.24999999732,
1.249999999345],[0.24999999732, 0.49999999919],[0.24999999732,
0.49999999919],[0, 0.749999999245],[0, 0.24999999914],[0,
0.24999999914],[-0.75000000652, 1.249999999345],[-0.250000011875,
0.49999999919],[-0.500000009195, 0.49999999919],[-0.75000000652,
0.999999999295],[-0.75000000652, 0.749999999245],[-0.75000000652,
0.749999999245],[-0.75000000652, 0.49999999919],[-0.500000009195,
0.49999999919],[-0.75000000652, 0.49999999919],[-0.500000009195,
0.24999999914],[-0.250000011875, 0],[-0.500000009195, 0],[-1.500000005765,
0.24999999914],[-0.75000000652, 0],[-0.75000000652, 0],[-1.00000000384,
0],[-0.75000000652, -0.25000000096],[-1.500000005765,
-0.50000000101],[-0.500000009195, -0.50000000101],[-1.500000005765,
-1.000000000205],[-0.75000000652, -0.750000000155],[-1.750000003085,
-1.500000001215],[-0.250000011875, -0.25000000096],[0, 0],[0.24999999732,
-0.25000000096],[0, -0.50000000101],[-0.250000011875, -0.25000000096]];
echo("objpoints TWO end");
echo("objpaths TWO start");
obj_paths1
=[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63]];
echo("objpaths TWO end");
echo("Starting TWO");
// FAILS
translate([0, 0, 2])
linear_extrude(height=0.2)
polygon(obj_points1, obj_paths1);
echo("Finishing TWO");
}
Log results on Render:
Parsing design (AST generation)...
Saved backup file:
C:/Users/blkgr/Documents/OpenSCAD/backups/unsaved-backup-hrNNKeVd.scad
Compiling design (CSG Tree generation)...
ECHO: "Starting ONE"
ECHO: "Finishing ONE"
ECHO: "objpoints TWO start"
ECHO: "objpoints TWO end"
ECHO: "objpaths TWO start"
ECHO: "objpaths TWO end"
ECHO: "Starting TWO"
ECHO: "Finishing TWO"
Rendering Polygon Mesh using CGAL...
Geometries in cache: 59
Geometry cache size in bytes: 602280
CGAL Polyhedrons in cache: 11
CGAL cache size in bytes: 3095648
Total rendering time: 0:00:00.047
Top level object is a 3D object:
Simple: yes
Vertices: 8
Halfedges: 24
Edges: 12
Halffacets: 12
Facets: 6
Volumes: 2
Rendering finished.
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From: Gryffyn via Discuss discuss@lists.openscad.org
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Date: Tue, 9 Nov 2021 23:26:19 +0000 (UTC)
Subject: [OpenSCAD] YAPDOR (yet another part disappears on render) question
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