Wall-E | modern jekyll theme with grid frontpage | Theme library
kandi X-RAY | Wall-E Summary
kandi X-RAY | Wall-E Summary
A modern jekyll theme with grid frontpage, beautiful typography, mobile responsive, made with Semantic UI
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QUESTION
I have a class that downloads files from FTP servers using the Apache FTP Client, and I want to test it. For doing so, I decided to use the FakeFtpServer class from MockFtpServer, but it always fails with the same error: Connection refused (Connection refused)
.
My test class:
...ANSWER
Answered 2020-Oct-20 at 10:23Ok, I found it: FAKE_FTP_SERVER.setServerControlPort(0);
sets the value of the server port to 0, and the automatic selection of an available port only happens during FAKE_FTP_SERVER.start();
. I moved the line PORT = FAKE_FTP_SERVER.getServerControlPort();
after FAKE_FTP_SERVER.start();
and now it works.
QUESTION
I am trying to visualize data from a sonar sensor that turns 180 degrees back and forth.
After reading the sensor data and processing it with a regex variable "dist" contains a float representing distance in cm. The variable "angl" contains an integer between 0 and 180 representing rotation state.
So far so good, but I can't quite wrap my mind around how to represent this on a canvas with Tkinter. I've been trying all sorts of things but I've cleaned up the code a little bit for this thread.
The goal is to have point (1000, 1000) on the canvas as a center and move the green circle to (x, y) coordinates scaled accordingly.
Here is a sample readout from the terminal
ANGLE: 174
DISTANCE: 208.11
X: -72.99856014995218
Y: -194.88710146142
ANGLE: 175
DISTANCE: 161.67
X: 96.75694368800949
Y: -129.51943000243384
ANGLE: 176
DISTANCE: 100.88
X: 100.62718668260311
Y: 7.13748557578522
ANGLE: 177
DISTANCE: 43.61
X: 20.907170903220738
Y: 38.27169064496002
ANSWER
Answered 2020-May-05 at 22:33There are few things I see:
- The angle that you use in sin and cos should be in radians
- You have to use positions relative to your canvas
Here is what I would do:
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