simple model doesn't render
Hi!
I'm a beginner, trying to render my first object. However, apparently I did
something stupid, openSCAD 2015.03 on macOS makes no progress when trying
to render the following code:
height = 235;
radius = 83.5;
thick = 2;
rod_length = 100;
rod_diameter = 3;
tilt_angle = 3;
row_dist = 3;
upper_grid_offset = 205;
upper_grid_length = 5;
lower_grid_offset = 10;
lower_grid_length = 50;
difference()
{
// make hollow cylinder
cylinder(h = height, r = radius);
translate([0, 0, thick]) {
cylinder(h = height - thick, r = radius - (thick/2));
}
// add upper microphone grid
for(horizontal = [upper_grid_offset : row_dist : upper_grid_offset +
upper_grid_length])
{
shift = (horizontal %2 == 0) ? 0 : tilt_angle/2;
for (heading = [ 0 : tilt_angle : 360 ])
{
translate([0, 0, horizontal])
{
rotate([heading + shift, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter);
}
}
}
}
// add lower sound grid
for(horizontal = [lower_grid_offset : row_dist : lower_grid_offset +
lower_grid_length])
{
shift = (horizontal %2 == 0) ? 0 : tilt_angle/2;
for (heading = [ 0 : tilt_angle : 360 ])
{
translate([0, 0, horizontal])
{
rotate([heading + shift, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter);
}
}
}
}
// add power cable hole
translate([0, 0, 5])
{
rotate([0, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter * 2);
}
}
}
Anyone has an idea whats going on?
Best regards,
Michael
It will simply take a very long time to make all those holes with CGAL.
On 8 September 2017 at 11:50, Michael Böckling michael@boeckling.net
wrote:
Hi!
I'm a beginner, trying to render my first object. However, apparently I
did something stupid, openSCAD 2015.03 on macOS makes no progress when
trying to render the following code:
height = 235;
radius = 83.5;
thick = 2;
rod_length = 100;
rod_diameter = 3;
tilt_angle = 3;
row_dist = 3;
upper_grid_offset = 205;
upper_grid_length = 5;
lower_grid_offset = 10;
lower_grid_length = 50;
difference()
{
// make hollow cylinder
cylinder(h = height, r = radius);
translate([0, 0, thick]) {
cylinder(h = height - thick, r = radius - (thick/2));
}
// add upper microphone grid
for(horizontal = [upper_grid_offset : row_dist : upper_grid_offset +
upper_grid_length])
{
shift = (horizontal %2 == 0) ? 0 : tilt_angle/2;
for (heading = [ 0 : tilt_angle : 360 ])
{
translate([0, 0, horizontal])
{
rotate([heading + shift, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter);
}
}
}
}
// add lower sound grid
for(horizontal = [lower_grid_offset : row_dist : lower_grid_offset +
lower_grid_length])
{
shift = (horizontal %2 == 0) ? 0 : tilt_angle/2;
for (heading = [ 0 : tilt_angle : 360 ])
{
translate([0, 0, horizontal])
{
rotate([heading + shift, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter);
}
}
}
}
// add power cable hole
translate([0, 0, 5])
{
rotate([0, 90, 0])
{
cylinder(h = rod_length, d = rod_diameter * 2);
}
}
}
Anyone has an idea whats going on?
Best regards,
Michael
OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
Yes, it takes 16 sec to render in my computer with the setting:
tilt_angle = 30;
row_dist = 10;
Besides, you may consider the change
translate([0, 0, thick]) {
cylinder(h = height /*- thick*/, r = radius - (thick/2));
to avoid zbuffer fighting at the top.
2017-09-08 12:11 GMT+01:00 nop head nop.head@gmail.com:
It will simply take a very long time to make all those holes with CGAL.
The original takes about 14 minutes on my system. The progress bar does not
progress smoothly so is no guide to how it is progressing.
Total rendering time: 0 hours, 13 minutes, 53 seconds
Top level object is a 3D object:
Simple: yes
Vertices: 36059
Halfedges: 108222
Edges: 54111
Halffacets: 34906
Facets: 17453
Volumes: 2
On 8 September 2017 at 12:18, Ronaldo Persiano rcmpersiano@gmail.com
wrote:
Yes, it takes 16 sec to render in my computer with the setting:
tilt_angle = 30;
row_dist = 10;
Besides, you may consider the change
translate([0, 0, thick]) {
cylinder(h = height /*- thick*/, r = radius - (thick/2));
to avoid zbuffer fighting at the top.
2017-09-08 12:11 GMT+01:00 nop head nop.head@gmail.com:
It will simply take a very long time to make all those holes with CGAL.
It only takes six minutes if you stop the hole cylinders from overlapping
each other. I.e. make then short and translate them out to the radius.
On 8 September 2017 at 12:25, nop head nop.head@gmail.com wrote:
The original takes about 14 minutes on my system. The progress bar does
not progress smoothly so is no guide to how it is progressing.
Total rendering time: 0 hours, 13 minutes, 53 seconds
Top level object is a 3D object:
Simple: yes
Vertices: 36059
Halfedges: 108222
Edges: 54111
Halffacets: 34906
Facets: 17453
Volumes: 2
On 8 September 2017 at 12:18, Ronaldo Persiano rcmpersiano@gmail.com
wrote:
Yes, it takes 16 sec to render in my computer with the setting:
tilt_angle = 30;
row_dist = 10;
Besides, you may consider the change
translate([0, 0, thick]) {
cylinder(h = height /*- thick*/, r = radius - (thick/2));
to avoid zbuffer fighting at the top.
2017-09-08 12:11 GMT+01:00 nop head nop.head@gmail.com:
It will simply take a very long time to make all those holes with CGAL.
Thanks everyone for the useful advise in such a short time - very
impressive!
2017-09-08 14:03 GMT+02:00 nop head nop.head@gmail.com:
It only takes six minutes if you stop the hole cylinders from overlapping
each other. I.e. make then short and translate them out to the radius.
On 8 September 2017 at 12:25, nop head nop.head@gmail.com wrote:
The original takes about 14 minutes on my system. The progress bar does
not progress smoothly so is no guide to how it is progressing.
Total rendering time: 0 hours, 13 minutes, 53 seconds
Top level object is a 3D object:
Simple: yes
Vertices: 36059
Halfedges: 108222
Edges: 54111
Halffacets: 34906
Facets: 17453
Volumes: 2
On 8 September 2017 at 12:18, Ronaldo Persiano rcmpersiano@gmail.com
wrote:
Yes, it takes 16 sec to render in my computer with the setting:
tilt_angle = 30;
row_dist = 10;
Besides, you may consider the change
translate([0, 0, thick]) {
cylinder(h = height /*- thick*/, r = radius - (thick/2));
to avoid zbuffer fighting at the top.
2017-09-08 12:11 GMT+01:00 nop head nop.head@gmail.com:
It will simply take a very long time to make all those holes with CGAL.