Posts by John Van Vliet

by John Van Vliet
Yesterday, 06:13
Forum: Add-on releases
Topic: Asteroid 2020 AV2
Replies: 0
Views: 44

Asteroid 2020 AV2

There is a new asteroid inside the orbit of Venus

please see the SPICE section of Celestialmatters
http://forum.celestialmatters.org/viewtopic.php?f=18&t=988
requires SPICE to be used
2020av2.1.png


2020av2.2.png
by John Van Vliet
10.12.2019, 20:43
Forum: Ideas & News
Topic: A new Addon Repository concept (Formerly called "Should we make a new Motherlode?")
Replies: 86
Views: 2713

Re: A new Addon Repository concept (Formerly called "Should we make a new Motherlode?")

as stated before i only check add ons . I do not have admin access

but i have time and the knowledge to keep the motherload up to date


but in the last year or so there have not been many addons to check . As in not many submitted
by John Van Vliet
01.12.2019, 04:52
Forum: Textures
Topic: Updating exoplanet textures
Replies: 25
Views: 761

Re: Updating exoplanet textures

Class 1 exo-planet examples
Class1_1.png
Class1_2.png


Class1_2.png
Class1_4.png


Class1_5.png


Added after 1 minute 23 seconds:
Class 1 exo-planet examples

Class1_6.png
Class1_7.png
Class1_8.png
by John Van Vliet
01.12.2019, 04:32
Forum: Ideas & News
Topic: A new Addon Repository concept (Formerly called "Should we make a new Motherlode?")
Replies: 86
Views: 2713

re

I am still around , but not that much as for self hosting i used to do that but COMCAST did not like it and sent me a legal " nastygram" to cease and desist or to buy a business connection i can host a site on my fiber connection . seeing as i do have a old machine that has 500gig drive th...
by John Van Vliet
23.08.2019, 05:33
Forum: Help Central
Topic: Still active/Linux package out of date.
Replies: 17
Views: 3802

Re: Still active/Linux package out of date.

there is a linux only fork of the older 1.70 code that i use i removed all the old qt3 and glut and gtk code it is qt5 only Now it has not been updated in a while but it builds just fine on OpenSUSE 15.1 so it should build without any errors on Linux Mint This is just a copy of what I USE https://gi...
by John Van Vliet
28.07.2019, 05:49
Forum: Development
Topic: Normals of the Galilean moons (question for John Van Vliet)
Replies: 8
Views: 2273

Re: Normals of the Galilean moons (question for John Van Vliet)

Europa is so flat that a normal is really not needed

Also i no longer have a copy of the very old one i made

I do have a specular map of Europa , that i can upload

a 8k Specular map
https://drive.google.com/file/d/150b6GZGId-4mscLtaclHlzIYw4qfUROl/view?usp=sharing
by John Van Vliet
26.05.2019, 06:13
Forum: Celestia Users
Topic: How to properly credit images of planets for commercial use
Replies: 10
Views: 2459

Re: How to properly credit images of planets for commercial use

all of mine are
CC-BY-SA

so there are two credit lines

1) NASA/JPL /John Van Vliet
2) ESA / John Van Vlet
by John Van Vliet
26.05.2019, 06:10
Forum: Development
Topic: scattersim and scattertable tools
Replies: 2
Views: 1811

Re: scattersim and scattertable tools

"scattertable" builds from my fork of celestia using the default " build.sh" script

PS. building on OpenSUSE 15.0

my Linux ONLY fork is here
https://github.com/JohnVV/MyCelestiaBuild

this is MY copy i use it builds using qmake - qt5
by John Van Vliet
26.05.2019, 05:52
Forum: Tutorials
Topic: Need instructions on how to use "The Gimp" to create planets
Replies: 9
Views: 4081

Re: Need instructions on how to use "The Gimp" to create planets

i use Blender 2.79 to make planets for an example see: http://forum.celestialmatters.org/viewtopic.php?f=4&t=878#p15415 with gimp you will have to paint it i have in the past used gimp to make a height map and then a colorized version for a texture BUT!!! you have to edit for the polar areas usi...
by John Van Vliet
22.04.2019, 21:25
Forum: Textures
Topic: How to create a bump map with wilbur ?
Replies: 4
Views: 1688

How to create a bump map with wilbur ?

this was post-processed in wilbur ,after being created in Blender 2.79b

m-like.png


m-like.png


after separating the poles and the middle area i ran all 3 parts through 5 erode cycles .Then rejoined them into one image
by John Van Vliet
15.03.2019, 03:31
Forum: Bugs
Topic: Specular maps and Normalmaps together
Replies: 20
Views: 3808

Re: Specular maps and Normalmaps together

without even knowing what your hardware is i can not even guess what is your 3d card and WHAT driver are you using - also WHAT is the Operating system ? Linux Apple MS Windows XP,7,8,10, what ? i have no such issue and have not had this issue in all my years the only thing i can GUESS is your hardwa...
by John Van Vliet
10.03.2019, 23:36
Forum: Ideas & News
Topic: IDEA: Support for one of the formats supported by Windows Paint 3D
Replies: 5
Views: 1967

Re: IDEA: Support for one of the formats supported by Windows Paint 3D

My question is: can Celestia implement support for one of these formats (at least .obj due to versatility) natively for celestial bodies/spacecraft?

obj files have been supported for many many many years
by John Van Vliet
05.02.2019, 22:00
Forum: Help Central
Topic: Installing Celestia on Linux - Kubuntu 17.10
Replies: 19
Views: 6683

Re: Installing Celestia on Linux - Kubuntu 17.10

i would not say " out of date"
but stripped of old unused code and using the legacy lua 5.1

it is a FORK of 1.70 that i use

as to finding a star
< control>+<m> or hit < enter> and start typing the name of the star
by John Van Vliet
29.01.2019, 23:44
Forum: Ideas & News
Topic: What is the diameter of Celestia's virtual magnifying telescope?
Replies: 2
Views: 2023

Re: What is the diameter of Celestia's virtual magnifying telescope?

that really is not a Hubble image but a processed one by "mark buie at.al "

this is the raw hubble images
123.png


and a zoom of pluto from the earth ( zoomed in in gimp )
1a.png
by John Van Vliet
03.01.2019, 04:54
Forum: Development
Topic: Celestia 1.7.0 Development Thread
Replies: 740
Views: 169303

Re: Celestia 1.7.0 Development Thread

So, Who is going to be first with a 3d model of the Ultima Thule Snowman :biggrin: (attempting to get me back OT :) ) seeing as i have a spice orbit and a good ( so far ) texture but modeling a contact binary with the small lobe spherical and the large node a bit flat'ish this will take time . then...
by John Van Vliet
16.12.2018, 19:31
Forum: Textures
Topic: How to create a bump map with wilbur ?
Replies: 4
Views: 1688

Re: How to create a bump map with wilbur ?

keep in mind that wilburs erode function ASSUMES the map to be in Mercator projection and hence the poles WILL be messed up
by John Van Vliet
04.12.2018, 01:57
Forum: Add-on releases
Topic: Jupiter 2010
Replies: 7
Views: 1296

Re: Jupiter 2010

you might want to fix the texture to map to a sphere

europa2010.png


to this

europa2010A.png



took all of 5 min. to fix
by John Van Vliet
26.11.2018, 01:08
Forum: Help Central
Topic: Trouble installing Celestia on Linux
Replies: 38
Views: 6288

Re: Trouble installing Celestia on Linux

glad to here you got it working

I was about to point you to my linux only fork

https://github.com/JohnVV/MyCelestiaBuild

qt5 and lua 5.1 build and supports SPICE
by John Van Vliet
10.11.2018, 05:40
Forum: Modelling
Topic: Convert 3d file into cmod with texture
Replies: 18
Views: 3132

Re: Convert 3d file into cmod with texture

the ssc is for SPICE orbits Replace "4 Vesta:Vesta" "Sol" { Class "asteroid" Mesh "Vesta.Med.bin.cmod" # Texture "" # coded into the cmod # NormapMap "" # coded into the cmod Orientation [ 90 1 0 0 ] # did NOT rotate it on export to cmod Ra...

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