geometry Questions
6
Solved
I am trying to detect full circles and semicircles in an image.
I am following the below mentioned procedure:
Process image (including Canny edge detection).
Find contours and draw them on an emp...
Faintheart asked 20/12, 2013 at 7:42
3
Solved
I want to find the maximum inscribing circle of contour.
I have detected the contour with cv::findContours and it is there as a vector<Point>.
I know how to detect the minimum enclosing cir...
2
Language doesn't matter all that much since this is an algorithm problem, but let's say I'm using Python 3.
Imagine there are two spheres in a 3D space. The spheres have a center position [x, y, z]...
Clamorous asked 12/8, 2022 at 11:9
9
Solved
Given the following path (for example) which describes a SVG cubic bezier curve:
M 300,140 C 300,40, 500,40, 500,140
And assuming a straight line connecting the end points 300,140 to 500,140 (closi...
Brent asked 6/4, 2012 at 5:52
12
Solved
I want to calculate a point on a given line that is perpendicular from a given point.
I have a line segment AB and have a point C outside line segment. I want to calculate a point D on AB such th...
4
Is there any extension to the Hilbert space/plane filling curve that maps a non-square surface to a vector/line [for image mapping to vector]?
Eduardo asked 10/10, 2015 at 19:52
2
Solved
I have recently learned how to create the appearance of a triangle div with CSS and HTML. Now, I would like to know if it is at all possible to add a border around any of the sides of the triangle ...
4
Solved
I have some radiobuttons in an app that works with touch.
Because the end-user can have thick fingers, I want to make the circle and text int he radiobutton bigger.
Problem is, I can only make th...
0
I am currently writing a FBX Importer using FBX SDK 2020, and I've been validating that the data I have is correct, by dragging and dropping the FBX into Maya, and viewing what Maya's Component Edi...
4
I have in mind this video, or this simulation, and I would like to reproduce the geodesic lines on some sort of surface in 3D, given by a function f(x,y), from some starting point.
The midpoint me...
Lettered asked 7/2, 2020 at 3:33
3
Solved
consider an image like this:
by grouping pixels by color into distinct rectangles, different configurations might be achieved, for example:
the goal is to find one of the best configurations, i.e...
Overfeed asked 28/6, 2022 at 15:38
4
Solved
I'm trying to implement a line-of-sight algorithm on a 2-dimensional grid. I know how it needs to work conceptually, but I can't think of how to implement it as an algorithm.
The basic idea is pre...
6
Solved
I am trying to sample around 1000 points from a 3-D ellipsoid, uniformly. Is there some way to code it such that we can get points starting from the equation of the ellipsoid?
I want points on the...
13
Solved
I don't seem to be able to find the answer to this-
I need to draw a simple triangle using for loops.
*
***
*****
*******
*********
I can make a half triangle, but I don't know how to add to m...
4
Solved
Note: I asked this question before but it was closed as a duplicate, however, I, along with several others believe it was unduely closed, I explain why in an edit in my original post. So I would li...
Pallaten asked 28/2, 2018 at 20:21
9
Solved
Given a point (pX, pY) and a circle with a known center (cX,cY) and radius (r), what is the shortest amount of code you can come up with to find the point on the circle closest to (pX, pY) ?
I've ...
Milieu asked 19/11, 2008 at 2:49
4
For a simple particle system I'm making, I need to, given an ellipse with width and height, calculate a random point X, Y which lies in that ellipse.
Now I'm not the best at maths, so I wanted to ...
21
Solved
Let's say you have a two dimensional plane with 2 points (called a and b) on it represented by an x integer and a y integer for each point.
How can you determine if another point c is on the line ...
11
Solved
I am trying to create a circle with only a border using XML in android:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:sh...
Arrearage asked 19/4, 2013 at 6:27
17
If you have a circle with center (center_x, center_y) and radius radius, how do you test if a given point with coordinates (x, y) is inside the circle?
Expiration asked 26/1, 2009 at 20:7
3
Solved
I have an image with the size of W * H, I want to draw a line on this and the line should be automatically fit to the image,
for example if I draw it:
I want this:
How can I do this in Python and...
Stockdale asked 2/5, 2022 at 8:5
11
Given a line with first end point P(x1,y1) another end point is unknown, intersect with a circle that located at origin with radius R at only one point(tangent) T(x2,y2). Anyone know how to get the...
6
Solved
I'm looking for a way of to do a cross-browser iphone-like badge in CSS3. I'd obviously like to use one div for this, but alternative solutions would be fine. The important factor is that it needs ...
Batson asked 26/1, 2011 at 3:26
4
Solved
3
Solved
I am experimenting with the typing module and I wanted to know how to properly type something like a Nonagon (a 9 point polygon), which should be a Tuple and not a List because it should be immutab...
Lepore asked 24/4, 2022 at 23:46
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