Minkowski difference shows up with F5 but not F6

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Minkowski difference shows up with F5 but not F6

kerog
The following code quick-renders fine (F5) but when I try a full render (F6)
nothing shows up  Any thoughts on why?  Using: 2018.03.17 (git 3e7fbfff)

trayHeight = 1.4*25.4;
maxCutHeight = 0.4*25.4;

baseThickness = 2;
wallThickness = 2;
cornerRad = 2;
text1 = "1.4\"";
text2 = "Subtract 0.0\"";
text3 = "For 0 to 0.4\"";
textThickness = .6;
textHeight = 4;

riserHeight = trayHeight-baseThickness;
baseLength = 2*riserHeight;

$fn=10;

difference()
{
    minkowski()
    {
        union()
        {
            linear_extrude(baseThickness)
           
polygon([[0,0],[baseLength,0],[baseLength/2,sqrt(3)/2*baseLength]],[[0,1,2]],2);
       
            rotate([0,0,30])
            translate([0,wallThickness/2,baseThickness])
            rotate([90,0,0])
            linear_extrude(wallThickness)
           
polygon([[0,0],[baseLength/sqrt(3),0],[baseLength/sqrt(3),riserHeight]],[[0,1,2]],2);
       
            translate([baseLength,0,baseThickness])
            rotate([0,0,150])
            translate([0,wallThickness/2,0])
            rotate([90,0,0])
            linear_extrude(wallThickness)
           
polygon([[0,0],[baseLength/sqrt(3),0],[baseLength/sqrt(3),riserHeight]],[[0,1,2]],2);
       
            translate([baseLength/2,sqrt(3)/2*baseLength,baseThickness])
            rotate([0,0,-90])
            translate([0,wallThickness/2,0])
            rotate([90,0,0])
            linear_extrude(wallThickness)
           
polygon([[0,0],[baseLength/sqrt(3),0],[baseLength/sqrt(3),riserHeight]],[[0,1,2]],2);
       
        }
        sphere(r=1);
    }
    translate([0,0,riserHeight])
    cube([baseLength,baseLength,5]);
}



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
Your polygons are bad, use View/Thrown-Together, purple is bad, see  wiki FAQ
<https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/FAQ#Why_is_my_model_showing_up_with_F5_but_not_F6?>
.



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Re: Minkowski difference shows up with F5 but not F6

fred_dot_u
In reply to this post by kerog
Not that I have an answer to your question, but when I loaded the file
(copy/paste) and hit F5, there are large areas of background showing
through. When I first hit F6, an error appeared which did not appear in
subsequent F6 presses. Closing the file and opening a blank screen with
paste, the error appears:

> ERROR: CGAL error in CGAL_Nef_polyhedron3(): CGAL ERROR: assertion
> violation! Expr: pe_prev->is_border() || !internal::Plane_constructor
> <Plane>
> ::get_plane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate()
> File:
> /opt/mxe/usr/x86_64-w64-mingw32.static/include/CGAL/Nef_3/polyhedron_3_to_nef_3.h
> Line: 251

Using 2017.01.20 git 59df0d1

<http://forum.openscad.org/file/t824/openscad_forum_1.png>



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
Yes I notice. It appears not to be the polygons...



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
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It appears to not like the co-incident points at the corners of the base.

It works if you make the base so:
itsy=0.05;
#linear_extrude(baseThickness)
polygon([[0,0],[baseLength+itsy,0],[(baseLength+itsy)/2,sqrt(3)/2*(baseLength+itsy)]],[[0,1,2]],9);

I'm suspect CGAL should handle that. Anyone want to call BUG on this?



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
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Oops, not my day today.

I had the cube commented out. Still an issue...



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
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Something weird is going on.

I went back to the source in the OP.
Tried it in 2015.03-02 and it works:
<http://forum.openscad.org/file/t359/td23839_2015-03.jpg>


Then same source in 2018.04.01, which was what I used when I initially
looked with above posts. It now works:
<http://forum.openscad.org/file/t359/td23839_snapshot.jpg>

Note that these were both fresh run OpenSCAD instances, and F6 was the first
thing I did.
I then did preview, and that displays badly in both versions.

I definitely got the CGAL error mentioned above in my earlier testing.
Weirdness...



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Re: Minkowski difference shows up with F5 but not F6

kerog
Thanks, for looking at my problem!  Did you have a recommendation on how I
should proceed?

FWIW, what I'm trying to do is make an OpenSCAD version of this:
https://www.thingiverse.com/thing:2829836

My next step was to clean up the base with the following added to the
difference after the part that cuts off the top:  

        difference()
        {
           translate([.5*baseLength,.5*baseLength,0])
           cube([2*baseLength,2*baseLength,10],true);
           minkowski()
            {
                linear_extrude(5)
               
polygon([[0,0],[baseLength,0],[baseLength/2,sqrt(3)/2*baseLength]],[[0,1,2]],2);
                cylinder(r=1,h=5);
            }
        }

In case that triggers a different issue...




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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
As I can't reproduce the CGAL error on both 2015.03-2 and the 2018.04.01
snapshot, I suggest you try either of these versions, or the latest  here
<http://www.openscad.org/downloads.html#snapshots>  , first.
I seem to recall a somewhat recent snapshot had a bad regression.

If the error persists, please post the specific error message
(Design/Flush-Caches will reproduce the F6 error message - it sometimes
doesn't get repeated due to caching). And the latest source code if you have
advanced.

There are two issues BTW, whatever is causing the CGAL error, and the really
garbled preview.
The preview can be 'fixed' via Preferences/Advanced-Tab/Enable-Goldfeather.
(I always want to type GoldFinger...for some reason, No Mr Bond, I expect
you to die!)
If that fixes the preview for you, could you post the info from
Help/Library-Info, it often points to a graphics driver problem (different
to the CGAL issue). You could try updating the driver.

For the CGAL error, it should not error when processing normal OpenSCAD
code, imported STLs are usually the cause.
I suspect co-incident faces/edges/points could be the contributor. Like
where the three sides touch each other in the center, and the corners. I'll
look there if you still get the problem.



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Re: Minkowski difference shows up with F5 but not F6

NateTG
Here's the error message I see:
Rendering Polygon Mesh using CGAL...
ERROR: CGAL error in CGAL_Nef_polyhedron3(): CGAL ERROR: assertion violation! Expr: pe_prev->is_border() || !internal::Plane_constructor::get_plane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate() File: /usr/include/CGAL/Nef_3/polyhedron_3_to_nef_3.h Line: 251 
OpenSCAD version 2018.03.24

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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
Hmm, Nate/Fred/kerog what platform are you using?
Nate/Fred are you able to try on 2015.03-2?
I'm wondering if it is Linux specific. (I'm Windows)

Please post Help/Library-info.



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Re: Minkowski difference shows up with F5 but not F6

NateTG
OpenSCAD Version: 2018.03.24
System information: Linux 4.15.0-2-686-pae #1 SMP Debian 4.15.11-1
(2018-03-20) i686 Debian GNU/Linux buster/sid 8 CPUs 16777216.00 TB RAM
Compiler: GCC "6.3.0 20170516" 32bit
Boost version: 1_62
Eigen version: 3.3.2
CGAL version, kernels: 4.9, Cartesian, Extended_cartesian, Epeck
OpenCSG version: OpenCSG 1.4.0
Qt version: 5.9.2
QScintilla version: 2.9.3
MingW build: No
GLib version: 2.50.3
libzip version:
Application Path: /usr/local/bin
Documents Path: /home/nate/.local/share
Resource Path: /usr/local/share/openscad
User Library Path: /home/nate/.local/share/OpenSCAD/libraries
User Config Path: /home/nate/.config/OpenSCAD
Backup Path: /home/nate/.local/share/OpenSCAD/backups
OPENSCADPATH:
OpenSCAD library path:
/home/nate/.local/share/OpenSCAD/libraries
/usr/local/share/openscad/libraries

OPENSCAD_FONT_PATH:
OpenSCAD font path:
GLEW version: 2.0.0
OpenGL Version: 3.0 Mesa 17.3.7
GL Renderer: Mesa DRI Intel(R) Ivybridge Mobile x86/MMX/SSE2
GL Vendor: Intel Open Source Technology Center
RGBA(8880), depth(0), stencil(0)
GL_ARB_framebuffer_object: yes
GL_EXT_framebuffer_object: yes
GL_EXT_packed_depth_stencil: yes

Qt graphics widget: QOpenGLWidget
QSurfaceFormat: RGBA(8880), depth(0), stencil(0)

GL Extensions:
GL_3DFX_texture_compression_FXT1
GL_AMD_conservative_depth
GL_AMD_draw_buffers_blend
GL_AMD_seamless_cubemap_per_texture
GL_AMD_shader_trinary_minmax
GL_ANGLE_texture_compression_dxt3
GL_ANGLE_texture_compression_dxt5
GL_APPLE_object_purgeable
GL_APPLE_packed_pixels
GL_ARB_ES2_compatibility
GL_ARB_ES3_compatibility
GL_ARB_arrays_of_arrays
GL_ARB_blend_func_extended
GL_ARB_buffer_storage
GL_ARB_clear_buffer_object
GL_ARB_clear_texture
GL_ARB_clip_control
GL_ARB_color_buffer_float
GL_ARB_compressed_texture_pixel_storage
GL_ARB_compute_shader
GL_ARB_conditional_render_inverted
GL_ARB_conservative_depth
GL_ARB_copy_buffer
GL_ARB_copy_image
GL_ARB_cull_distance
GL_ARB_debug_output
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_derivative_control
GL_ARB_draw_buffers
GL_ARB_draw_buffers_blend
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_explicit_attrib_location
GL_ARB_explicit_uniform_location
GL_ARB_fragment_coord_conventions
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_no_attachments
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_get_program_binary
GL_ARB_get_texture_sub_image
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_instanced_arrays
GL_ARB_internalformat_query
GL_ARB_internalformat_query2
GL_ARB_invalidate_subdata
GL_ARB_map_buffer_alignment
GL_ARB_map_buffer_range
GL_ARB_multi_bind
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_occlusion_query2
GL_ARB_pipeline_statistics_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_polygon_offset_clamp
GL_ARB_program_interface_query
GL_ARB_provoking_vertex
GL_ARB_robustness
GL_ARB_sample_shading
GL_ARB_sampler_objects
GL_ARB_seamless_cube_map
GL_ARB_seamless_cubemap_per_texture
GL_ARB_separate_shader_objects
GL_ARB_shader_atomic_counter_ops
GL_ARB_shader_atomic_counters
GL_ARB_shader_bit_encoding
GL_ARB_shader_clock
GL_ARB_shader_draw_parameters
GL_ARB_shader_group_vote
GL_ARB_shader_image_load_store
GL_ARB_shader_image_size
GL_ARB_shader_objects
GL_ARB_shader_precision
GL_ARB_shader_storage_buffer_object
GL_ARB_shader_texture_image_samples
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shading_language_420pack
GL_ARB_shading_language_packing
GL_ARB_shadow
GL_ARB_sync
GL_ARB_texture_barrier
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_compression_bptc
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_cube_map_array
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_texture_filter_anisotropic
GL_ARB_texture_float
GL_ARB_texture_gather
GL_ARB_texture_mirror_clamp_to_edge
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_multisample
GL_ARB_texture_non_power_of_two
GL_ARB_texture_query_levels
GL_ARB_texture_query_lod
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_texture_rgb10_a2ui
GL_ARB_texture_storage
GL_ARB_texture_storage_multisample
GL_ARB_texture_swizzle
GL_ARB_texture_view
GL_ARB_timer_query
GL_ARB_transform_feedback2
GL_ARB_transform_feedback3
GL_ARB_transform_feedback_instanced
GL_ARB_transform_feedback_overflow_query
GL_ARB_transpose_matrix
GL_ARB_uniform_buffer_object
GL_ARB_vertex_array_bgra
GL_ARB_vertex_array_object
GL_ARB_vertex_attrib_binding
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_vertex_type_10f_11f_11f_rev
GL_ARB_vertex_type_2_10_10_10_rev
GL_ARB_window_pos
GL_ATI_blend_equation_separate
GL_ATI_draw_buffers
GL_ATI_separate_stencil
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_compiled_vertex_array
GL_EXT_copy_texture
GL_EXT_draw_buffers2
GL_EXT_draw_instanced
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_multisample_blit_scaled
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_gpu_program_parameters
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_packed_pixels
GL_EXT_pixel_buffer_object
GL_EXT_point_parameters
GL_EXT_polygon_offset
GL_EXT_polygon_offset_clamp
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shader_integer_mix
GL_EXT_shader_samples_identical
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_subtexture
GL_EXT_texture
GL_EXT_texture3D
GL_EXT_texture_array
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_rgtc
GL_EXT_texture_compression_s3tc
GL_EXT_texture_cube_map
GL_EXT_texture_edge_clamp
GL_EXT_texture_env_add
GL_EXT_texture_env_combine
GL_EXT_texture_env_dot3
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_object
GL_EXT_texture_rectangle
GL_EXT_texture_sRGB
GL_EXT_texture_sRGB_decode
GL_EXT_texture_shared_exponent
GL_EXT_texture_snorm
GL_EXT_texture_swizzle
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array
GL_EXT_vertex_array_bgra
GL_IBM_multimode_draw_arrays
GL_IBM_rasterpos_clip
GL_IBM_texture_mirrored_repeat
GL_INGR_blend_func_separate
GL_INTEL_performance_query
GL_KHR_blend_equation_advanced
GL_KHR_context_flush_control
GL_KHR_debug
GL_KHR_no_error
GL_KHR_robustness
GL_MESA_pack_invert
GL_MESA_shader_integer_functions
GL_MESA_texture_signed_rgba
GL_MESA_window_pos
GL_NV_blend_square
GL_NV_conditional_render
GL_NV_depth_clamp
GL_NV_light_max_exponent
GL_NV_packed_depth_stencil
GL_NV_primitive_restart
GL_NV_texgen_reflection
GL_NV_texture_barrier
GL_NV_texture_env_combine4
GL_NV_texture_rectangle
GL_OES_EGL_image
GL_OES_read_format
GL_S3_s3tc
GL_SGIS_generate_mipmap
GL_SGIS_texture_border_clamp
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_lod
GL_SUN_multi_draw_arrays



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Re: Minkowski difference shows up with F5 but not F6

NateTG
In reply to this post by kerog
What are you trying to accomplish with the minkowski anyway?

Here's a "bigger hammer" approach to generating the shape.  You might also
want to use str() to generate text1-text3.

<pre>
trayHeight = 1.4*25.4;
maxCutHeight = 0.4*25.4;

baseThickness = 2;
wallThickness = 2;
cornerRad = 2;
text1 = "1.4\"";
text2 = "Subtract 0.0\"";
text3 = "For 0 to 0.4\"";
textThickness = .6;
textHeight = 4;

topLength=5;

riserHeight = trayHeight-baseThickness;
baseLength = 2*riserHeight;


baseH=(baseLength/2+wallThickness)/sqrt(3);
baseL=(baseLength/2);

baseH=(baseLength/2+wallThickness)/sqrt(3);
baseL=(baseLength/2);

topH=(topLength/2+wallThickness)/sqrt(3);
topL=(topLength/2);

rWall=wallThickness/sqrt(3);

rot=[
   [cos(120),sin(120),0],
   [-sin(120), cos(120),0],
   [0,0,1]
];

polyhedron(
   points=[
      [-baseL,-baseH,0],[baseL,-baseH,0],
      [-baseL,-baseH,0]*rot,[baseL,-baseH,0]*rot,
      [-baseL,-baseH,0]*rot*rot,[baseL,-baseH,0]*rot*rot,

      [-baseL,-baseH,baseThickness],[baseL,-baseH,baseThickness],
      [-baseL,-baseH,baseThickness]*rot,[baseL,-baseH,baseThickness]*rot,
     
[-baseL,-baseH,baseThickness]*rot*rot,[baseL,-baseH,baseThickness]*rot*rot,

     
[0,-rWall,baseThickness],[rWall*cos(30),rWall*sin(30),baseThickness],[rWall*cos(150),rWall*sin(150),baseThickness],
//15-20
      [-topL,-topH,riserHeight],[topL,-topH,riserHeight],
      [-topL,-topH,riserHeight]*rot,[topL,-topH,riserHeight]*rot,
      [-topL,-topH,riserHeight]*rot*rot,[topL,-topH,riserHeight]*rot*rot,
//21-23
     
[0,-rWall,riserHeight],[rWall*cos(30),rWall*sin(30),riserHeight],[rWall*cos(150),rWall*sin(150),riserHeight],
   ],
   faces=[
      [0,1,2,3,4,5],
      [1,0,6,7],[2,1,7,8],[3,2,8,9],[4,3,9,10],[5,4,10,11],[0,5,11,6],
      [7,6,12],[9,8,13],[11,10,14],
     
[12,6,15,21],[7,12,21,16],[13,8,17,22],[9,13,22,18],[14,10,19,23],[11,14,23,20],
      [6,11,20,15],[8,7,16,17],[10,9,18,19],
      [20,23,19,18,22,17,16,21,15]
   ]
);
</pre>



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Re: Minkowski difference shows up with F5 but not F6

kerog
In reply to this post by MichaelAtOz
I'm using a Mac.  The Goldfeather seemed to help with the quick render,
though the cutoff at the top still looks a bit weird.  Here's my library
info:

OpenSCAD Version: 2015.03-3
System information: Mac OS X Version 10.12.6 (Build 16G1114) MacBookPro12,1
2 CPUs 16.00 GB RAM
Compiler: Clang "7.0.2 (clang-700.1.81)" 64bit
Boost version: 1_59
Eigen version: 3.2.6
CGAL version, kernels: 4.6.3, Cartesian, Extended_cartesian, Epeck
OpenCSG version: OpenCSG 1.4.0
Qt version: 5.5.1
QScintilla version: 2.8.4
MingW build: No
GLib version: 2.46.1
Application Path: /Applications/OpenSCAD2015.app/Contents/MacOS
Documents Path: /Users/Keith/Documents
Resource Path: /Applications/OpenSCAD2015.app/Contents/Resources
User Library Path: /Users/Keith/Documents/OpenSCAD/libraries
User Config Path: /Users/Keith/Library/Application Support/OpenSCAD
Backup Path: /Users/Keith/Documents/OpenSCAD/backups
OPENSCADPATH:
OpenSCAD library path:
/Users/Keith/Documents/OpenSCAD/libraries
/Applications/OpenSCAD2015.app/Contents/Resources/libraries

OPENSCAD_FONT_PATH:
OpenSCAD font path:
/usr/share/fonts
/Users/Keith/.local/share/fonts
/Users/Keith/.fonts
/usr/X11/lib/X11/fonts
/System/Library/Fonts
/Library/Fonts
/Users/Keith/Library/Fonts
/usr/X11/lib/X11/fonts/100dpi
/usr/X11/lib/X11/fonts/75dpi
/usr/X11/lib/X11/fonts/OTF
/usr/X11/lib/X11/fonts/Speedo
/usr/X11/lib/X11/fonts/TTF
/usr/X11/lib/X11/fonts/Type1
/usr/X11/lib/X11/fonts/cyrillic
/usr/X11/lib/X11/fonts/encodings
/usr/X11/lib/X11/fonts/misc
/usr/X11/lib/X11/fonts/util
/usr/X11/lib/X11/fonts/encodings/large
GLEW version: 1.13.0
OpenGL Version: 2.1 INTEL-10.25.17
GL Renderer: Intel(R) Iris(TM) Graphics 6100
GL Vendor: Intel Inc.
RGBA(8888), depth(24), stencil(8)
GL_ARB_framebuffer_object: yes
GL_EXT_framebuffer_object: yes
GL_EXT_packed_depth_stencil: yes

Using QGLWidget

GL Extensions:
GL_APPLE_aux_depth_stencil
GL_APPLE_client_storage
GL_APPLE_element_array
GL_APPLE_fence
GL_APPLE_float_pixels
GL_APPLE_flush_buffer_range
GL_APPLE_flush_render
GL_APPLE_object_purgeable
GL_APPLE_packed_pixels
GL_APPLE_pixel_buffer
GL_APPLE_rgb_422
GL_APPLE_row_bytes
GL_APPLE_specular_vector
GL_APPLE_texture_range
GL_APPLE_transform_hint
GL_APPLE_vertex_array_object
GL_APPLE_vertex_array_range
GL_APPLE_vertex_point_size
GL_APPLE_vertex_program_evaluators
GL_APPLE_ycbcr_422
GL_ARB_color_buffer_float
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_instanced_arrays
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_provoking_vertex
GL_ARB_seamless_cube_map
GL_ARB_shader_objects
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shadow
GL_ARB_sync
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_texture_float
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_non_power_of_two
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_transpose_matrix
GL_ARB_vertex_array_bgra
GL_ARB_vertex_blend
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_ATI_separate_stencil
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_ATI_texture_mirror_once
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_clip_volume_hint
GL_EXT_debug_label
GL_EXT_debug_marker
GL_EXT_draw_buffers2
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_multisample_blit_scaled
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_geometry_shader4
GL_EXT_gpu_program_parameters
GL_EXT_gpu_shader4
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_texture_array
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_s3tc
GL_EXT_texture_env_add
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_rectangle
GL_EXT_texture_sRGB
GL_EXT_texture_sRGB_decode
GL_EXT_texture_shared_exponent
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array_bgra
GL_IBM_rasterpos_clip
GL_NV_blend_square
GL_NV_conditional_render
GL_NV_depth_clamp
GL_NV_fog_distance
GL_NV_light_max_exponent
GL_NV_texgen_reflection
GL_NV_texture_barrier
GL_SGIS_generate_mipmap
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_lod



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Re: Minkowski difference shows up with F5 but not F6

kerog
In reply to this post by MichaelAtOz
Hmm, I tried to reply a minute ago, but it didn't seem to take.  I hope this
doesn't end up being a duplicate post.  I'm using MacOS.  The goldfeather
worked well, though the top cutoff part still looks a little funny on the
quick render.  Here's my library info:

OpenSCAD Version: 2015.03-3
System information: Mac OS X Version 10.12.6 (Build 16G1114) MacBookPro12,1
2 CPUs 16.00 GB RAM
Compiler: Clang "7.0.2 (clang-700.1.81)" 64bit
Boost version: 1_59
Eigen version: 3.2.6
CGAL version, kernels: 4.6.3, Cartesian, Extended_cartesian, Epeck
OpenCSG version: OpenCSG 1.4.0
Qt version: 5.5.1
QScintilla version: 2.8.4
MingW build: No
GLib version: 2.46.1
Application Path: /Applications/OpenSCAD2015.app/Contents/MacOS
Documents Path: /Users/Keith/Documents
Resource Path: /Applications/OpenSCAD2015.app/Contents/Resources
User Library Path: /Users/Keith/Documents/OpenSCAD/libraries
User Config Path: /Users/Keith/Library/Application Support/OpenSCAD
Backup Path: /Users/Keith/Documents/OpenSCAD/backups
OPENSCADPATH:
OpenSCAD library path:
/Users/Keith/Documents/OpenSCAD/libraries
/Applications/OpenSCAD2015.app/Contents/Resources/libraries

OPENSCAD_FONT_PATH:
OpenSCAD font path:
/usr/share/fonts
/Users/Keith/.local/share/fonts
/Users/Keith/.fonts
/usr/X11/lib/X11/fonts
/System/Library/Fonts
/Library/Fonts
/Users/Keith/Library/Fonts
/usr/X11/lib/X11/fonts/100dpi
/usr/X11/lib/X11/fonts/75dpi
/usr/X11/lib/X11/fonts/OTF
/usr/X11/lib/X11/fonts/Speedo
/usr/X11/lib/X11/fonts/TTF
/usr/X11/lib/X11/fonts/Type1
/usr/X11/lib/X11/fonts/cyrillic
/usr/X11/lib/X11/fonts/encodings
/usr/X11/lib/X11/fonts/misc
/usr/X11/lib/X11/fonts/util
/usr/X11/lib/X11/fonts/encodings/large
GLEW version: 1.13.0
OpenGL Version: 2.1 INTEL-10.25.17
GL Renderer: Intel(R) Iris(TM) Graphics 6100
GL Vendor: Intel Inc.
RGBA(8888), depth(24), stencil(8)
GL_ARB_framebuffer_object: yes
GL_EXT_framebuffer_object: yes
GL_EXT_packed_depth_stencil: yes

Using QGLWidget

GL Extensions:
GL_APPLE_aux_depth_stencil
GL_APPLE_client_storage
GL_APPLE_element_array
GL_APPLE_fence
GL_APPLE_float_pixels
GL_APPLE_flush_buffer_range
GL_APPLE_flush_render
GL_APPLE_object_purgeable
GL_APPLE_packed_pixels
GL_APPLE_pixel_buffer
GL_APPLE_rgb_422
GL_APPLE_row_bytes
GL_APPLE_specular_vector
GL_APPLE_texture_range
GL_APPLE_transform_hint
GL_APPLE_vertex_array_object
GL_APPLE_vertex_array_range
GL_APPLE_vertex_point_size
GL_APPLE_vertex_program_evaluators
GL_APPLE_ycbcr_422
GL_ARB_color_buffer_float
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_instanced_arrays
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_provoking_vertex
GL_ARB_seamless_cube_map
GL_ARB_shader_objects
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shadow
GL_ARB_sync
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_texture_float
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_non_power_of_two
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_transpose_matrix
GL_ARB_vertex_array_bgra
GL_ARB_vertex_blend
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_ATI_separate_stencil
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_ATI_texture_mirror_once
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_clip_volume_hint
GL_EXT_debug_label
GL_EXT_debug_marker
GL_EXT_draw_buffers2
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_multisample_blit_scaled
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_geometry_shader4
GL_EXT_gpu_program_parameters
GL_EXT_gpu_shader4
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_texture_array
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_s3tc
GL_EXT_texture_env_add
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_rectangle
GL_EXT_texture_sRGB
GL_EXT_texture_sRGB_decode
GL_EXT_texture_shared_exponent
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array_bgra
GL_IBM_rasterpos_clip
GL_NV_blend_square
GL_NV_conditional_render
GL_NV_depth_clamp
GL_NV_fog_distance
GL_NV_light_max_exponent
GL_NV_texgen_reflection
GL_NV_texture_barrier
GL_SGIS_generate_mipmap
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_lod



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
In reply to this post by NateTG
2018.04.01 (win) has CGAL 4.10 (v's Nate's 4.9). (& OpenCSG 1.4.2 v's 1.4.0)

/GL Renderer: Mesa DRI Intel(R) Ivybridge Mobile x86/MMX/SSE2
GL Vendor: Intel Open Source Technology Center /

Intel has always been problematic, for preview. Nate you may want to try
Goldfeather, it should fix the garbled preview. OpenCSG 1.4.2 (without
Goldfeather) has helped in many Linux preview problems recently.

Not related to CGAL error tho.

tp/Marius I'm approaching my depth limit for Linux (and ca't reproduce on
Windows), I suspect kerog's info will be Intel & OpenCSG 1.4.0 & CGAL 4.9.
Where to next?



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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
In reply to this post by kerog
kerog wrote

> OpenSCAD Version: 2015.03-3
> System information: Mac OS X Version 10.12.6 (Build 16G1114)
> MacBookPro12,1
> 2 CPUs 16.00 GB RAM
> Compiler: Clang "7.0.2 (clang-700.1.81)" 64bit
> Boost version: 1_59
> Eigen version: 3.2.6
> CGAL version, kernels: 4.6.3, Cartesian, Extended_cartesian, Epeck
> OpenCSG version: OpenCSG 1.4.0
> Qt version: 5.5.1
> QScintilla version: 2.8.4
> MingW build: No
> GLib version: 2.46.1
> ...
> GLEW version: 1.13.0
> OpenGL Version: 2.1 INTEL-10.25.17
> GL Renderer: Intel(R) Iris(TM) Graphics 6100

kerog, your OP said using: 2018.03.17 (git 3e7fbfff), Library info for that
one too please (you can stop at GL Extensions: ).

Then tp/Marius you'll need to jump in here please.



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Re: Minkowski difference shows up with F5 but not F6

kerog
Oops, sorry.  

OpenSCAD Version: 2018.03.17 (git 3e7fbfff)
System information: Mac OS X Version 10.12.6 (Build 16G1114) MacBookPro12,1
2 CPUs 16.00 GB RAM
Compiler: Clang "9.0.0 (clang-900.0.39.2)" 64bit
Boost version: 1_65_1
Eigen version: 3.3.3
CGAL version, kernels: 4.11, Cartesian, Extended_cartesian, Epeck
OpenCSG version: OpenCSG 1.4.2
Qt version: 5.10.0
QScintilla version: 2.9.3
MingW build: No
GLib version: 2.54.2
libzip version:
Application Path: /Applications/OpenSCAD2018.app/Contents/MacOS
Documents Path: /Users/Keith/Documents
Resource Path: /Applications/OpenSCAD2018.app/Contents/Resources
User Library Path: /Users/Keith/Documents/OpenSCAD/libraries
User Config Path: /Users/Keith/Library/Application Support/OpenSCAD
Backup Path: /Users/Keith/Documents/OpenSCAD/backups
OPENSCADPATH:
OpenSCAD library path:
/Users/Keith/Documents/OpenSCAD/libraries
/Applications/OpenSCAD2018.app/Contents/Resources/libraries

OPENSCAD_FONT_PATH:
OpenSCAD font path:
/usr/share/fonts
/Users/Keith/.local/share/fonts
/Users/Keith/.fonts
/usr/X11/lib/X11/fonts
/System/Library/Fonts
/Library/Fonts
/Users/Keith/Library/Fonts
/usr/X11/lib/X11/fonts/100dpi
/usr/X11/lib/X11/fonts/75dpi
/usr/X11/lib/X11/fonts/OTF
/usr/X11/lib/X11/fonts/Speedo
/usr/X11/lib/X11/fonts/TTF
/usr/X11/lib/X11/fonts/Type1
/usr/X11/lib/X11/fonts/cyrillic
/usr/X11/lib/X11/fonts/encodings
/usr/X11/lib/X11/fonts/misc
/usr/X11/lib/X11/fonts/util
/usr/X11/lib/X11/fonts/encodings/large
GLEW version: 1.13.0
OpenGL Version: 2.1 INTEL-10.25.17
GL Renderer: Intel(R) Iris(TM) Graphics 6100
GL Vendor: Intel Inc.
RGBA(8888), depth(24), stencil(8)
GL_ARB_framebuffer_object: yes
GL_EXT_framebuffer_object: yes
GL_EXT_packed_depth_stencil: yes

Qt graphics widget: QGLWidgetGL Extensions:
GL_APPLE_aux_depth_stencil
GL_APPLE_client_storage
GL_APPLE_element_array
GL_APPLE_fence
GL_APPLE_float_pixels
GL_APPLE_flush_buffer_range
GL_APPLE_flush_render
GL_APPLE_object_purgeable
GL_APPLE_packed_pixels
GL_APPLE_pixel_buffer
GL_APPLE_rgb_422
GL_APPLE_row_bytes
GL_APPLE_specular_vector
GL_APPLE_texture_range
GL_APPLE_transform_hint
GL_APPLE_vertex_array_object
GL_APPLE_vertex_array_range
GL_APPLE_vertex_point_size
GL_APPLE_vertex_program_evaluators
GL_APPLE_ycbcr_422
GL_ARB_color_buffer_float
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_instanced_arrays
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_provoking_vertex
GL_ARB_seamless_cube_map
GL_ARB_shader_objects
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shadow
GL_ARB_sync
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_texture_float
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_non_power_of_two
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_transpose_matrix
GL_ARB_vertex_array_bgra
GL_ARB_vertex_blend
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_ATI_separate_stencil
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_ATI_texture_mirror_once
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_clip_volume_hint
GL_EXT_debug_label
GL_EXT_debug_marker
GL_EXT_draw_buffers2
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_multisample_blit_scaled
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_geometry_shader4
GL_EXT_gpu_program_parameters
GL_EXT_gpu_shader4
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_texture_array
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_s3tc
GL_EXT_texture_env_add
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_rectangle
GL_EXT_texture_sRGB
GL_EXT_texture_sRGB_decode
GL_EXT_texture_shared_exponent
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array_bgra
GL_IBM_rasterpos_clip
GL_NV_blend_square
GL_NV_conditional_render
GL_NV_depth_clamp
GL_NV_fog_distance
GL_NV_light_max_exponent
GL_NV_texgen_reflection
GL_NV_texture_barrier
GL_SGIS_generate_mipmap
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_lod



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Re: Minkowski difference shows up with F5 but not F6

kintel
Administrator
In reply to this post by kerog
@kerog: What you found is a bug: When rendering, we use some cached geometry
that was generated during the preview phase and this triggers a CGAL
calculation error. I don't think we have a GitHub issue registered for this
one yet, but feel free to open one. The key is that doing F6 directly works,
but doing F5, then F6 it stops working.

A workaround: Do a "Design->Flush Caches" before rendering.

@anyone else: Please open a new thread for other issues so we can better
track what's going on.

 -Marius




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Re: Minkowski difference shows up with F5 but not F6

MichaelAtOz
Administrator
@kerog, I do suggest you try the latest  snapshot
<http://www.openscad.org/downloads.html#snapshots>  .
The newer OpenCSG fixes a number of problems of late.
May or may not fix the F5-F6 issue.



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or if I've done something stupid...

Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work.
Obviously inclusion of works of previous authors is not included in the above.


The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
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