spheres | Methods to create a sphere mesh

I have created a render of a 3D network initially created in Networkx, however now that I have this render I would ultimately like to export it as a single .stl file. From the code below, how would I be able to combine the glyph, tubes, ball into one file. If it is not possible to export to .stl, .vtk would be fine too as it could be converted in Paraview.

I receive no errors when trying to run this code, however nothing is rendered and only a blank screen appears. Please let me know where I have gone wrong. node_pos is a dictionary with all node coordinates keyed to node number, and G is the networkx graph object G. This code is adapted from code found elsewhere from 2005, so had to update some VTK attributes as they were outdated.

def draw_nxvtk(G, node_pos):

I recently found out there is a very handy method in three-box for placing three.js objects on the map which is "projectToworld".

While trying to place my three.js objects using the method, I realized that the Vector3 the method returns are really huge and not on the map.

According to the documentation of threebox, it says

projectToWorld

tb.projectToWorld(lnglat) : THREE.Vector3

Calculate the corresponding THREE.Vector3 for a given lnglat. It's inverse method is tb.unprojectFromWorld.

So I decided to use this method to locate my animated object in three js canvas. But what the methods returns are really huge.

So as I expected, these values don't place the three objects on the map and all the objects disappeared because they presumably are placed at very distant locations.

How do I fix this issue?

I made a minimal code to demonstrate this issue as below.

1. instantiating map

I am trying to make a solar system using OpenGL for project. As I have other planets and moons too, I want to make my sun larger than radius=1, and my earth=1 since a little less than 0.18, the sphere is barely visible, and moons cannot be drawn with proper size difference.

Below is my code, if I try to make a sphere with radius > 1, it becomes donut (torus) like. Can anyone guide me on how to make spheres using gluSphere of radius > 1?

i am a total beginner in threejs but: i have a function

Depending upon rendering an SVG either as a whole document or as a single element shows differences in rendering.

I created a simple SVG graphic using Inkscape and want to render it using Python. I decided librsvg was the way to go. This is my SVG, saved from Inkscape as "normal SVG" (without Inkscape-specific extensions).

I'm currently using React Three Fiber to simply render a sun and the earth orbiting it to test it out. However after I added code to apply textures to the respective spheres every time I run the development server for testing, the spheres fail to render. I've tried looking for people with the same issue and have not had any luck. Here is my code for the program.

If I pick a world point from a image, How can I convert the world coordinate to image index?

I am still relatively new to the Unity environment and am currently working with reinforcement learning and ML agents. For this I wanted to add an agent to the 2D platformer.

I have attached two ray perception sensors to my agent. Unfortunately I can't get any hits with these sensors, at least they are not displayed as usual with a sphere in the gizmos.

The sensors are casting rays, but like you see in the image, they are not colliding.

The ray perception sensor are childs of the agent, defined in its prefab. I defined the sensors to collide with 4 tags: Untagged, ground, enemy and coin

I assigned the coin tag to the token, the enemy tag to the enemy and the ground tag to the tilemap forming the ground. The token has a circle collider, while the enemy has an capsule collider. On the tilemap there is a tilmap collider.

I would now expect the sensor to collide with the token, enemy and ground and display these hits in spheres, but it does not.
So, what am I doing wrong?