p3d | A Coffeescript 3D Mesh Parser for a better web | Graphics library

I have built a two-dimensional grid of rectangles with a nested loop. Now I want to "roll up" this grid in three-dimensional space, or in other words "form a cylinder" or a "column". With the movement of my mouse pointer. Up to the "roll up" I get everything programmed as desired - but then my mathematics fails.

I am trying to animate a flying cloth, which consists of individual rectangles, in Processing. I built the cloth from a nested loop. Now I want to use the noise function to manipulate the height of the individual points. Unfortunately, I can't do that properly - apparently I don't understand the function. I took a detour, drew noise clouds on a PGraphics, then read the brightness value - and use that to control the z-position of each rectangle. This works the way I want it to work!

Only - how can I achieve the same effect without going the detour via PGraphics? This is my code the way I want it (the detour):

I am working with motion capture data and I want to do "skinning" in processing. So basically with every two points I get from my data I have to add a 3D object in between (I'll be using a box for now and the placement and rotation coordinates are the center of the 3D object) and rotate it so that it is aligned in all three dimensions with the vector that connects the two points.

Here we can see on the left, the initial placed box between the two points and on the right the now correctly rotated box:

The only way I know of to rotate an object in processing is to use the rotateX(), rotateY(), rotateZ() functions, which rotate an object around the global(?) axes using euler angles.

Now I am seriously struggling with finding a way to calculate this rotation properly.

I have already written a function for calculating the angle between two vectors:

I was trying to write a program to simulate the Earth-Moon system, and it was working fine for a while, but out of the blue, Processing started stalling. Every time I hit "Run," there's an unusual delay of about 10s, and then my Windows 11 taskbar informs me that the Sketch Window has been opened, but I can't access it, and nothing displays. Other programs run fine, including ones using P3D.

Here is my code:

I have an external console app I am trying to read from. My code starts the .exe process. I am using a buffered reader, .getinputstream, and then .readLine. I then print the Line to the console. I have some unexpected results doing this.

1. after starting the Process i do not see it in my task manager processes. I used isAlive() to verify that the process has actually started and, it returns true. If I run the process in a separate java file, the process starts correctly. I can see it in task manager processes.

2)When running the code, I get intermittent results. Most of the time .println(Line) does not print anything(in the eclipse). I have seen the println work on this code a couple of times but, it is not constantly working.

I have only been writing in java for about two weeks, so my understanding of how most of these functions work is remedial. I feel like this is either a timing issue between the .exe and my code or i am using something for the wrong purpose as well as making some things harder than they have to be. Any help would be greatly appreciated.

Windows 10, Eclipse IDE

I try to write python bindings with pybind11. Since I also need non simple python types I have to create custom type casters. My problem is that whenever I call get_point from python the LPoint2d will be returned but the following command will lead to a segmentation fault.

As far as I understand the python reference counting may cause that error. But since I am quite new to pybind11 I am not sure. How do I avoid that error?

In the following example I used an LPoint2d from panda3d as an example type. But the error also occurs with other types (e.g. cv2.KeyPoint).

Python:

I'm trying to set a maxWallClockTime of 72 hours using the ISO 8601 Duration format. The documentation for this property is useless, so I'm basing my guess on using the 8601 format on that being the way to set the same property at the Batch Job level when using the CLI. My constraints object is as follows:

I am developing a custom classifier that acts like an ensemble, combining minor classifiers together and the output of the ensemble is actually a majority voting. One important thing to mention is that every classifier has a "weight" associated with it for each sample.

Here is the predict method:

I am using IntelliJ idea, processing, peasy and obviously Java to run everything. I'm trying to use PeasyCam in my setting() method and it keeps giving me this error: