Recent questions tagged geometry

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geometry - What are the possible fast ways to detect circle in an image?

What are the possible fast ways to detect circle in an image ? For ex: i have an image with one Big ... without using Hough Circles(OpencV). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - How to create thiessen polygons from points using R packages?

I have multiple sets of points (for different years ~20) I want to generate thiessen polygons for each set of ... in R would be helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Taking altitude into account when calculating geodesic distance

i′m currently dealing with gps data combined with precise altitude measurement. I want to calculate the distance ... when calculating distance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Algorithm for generating a triangular mesh from a cloud of points

In some simulation program we generate object surfaces in terms of points, each point has 3D coordinates and the ... algorithm for doing this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - What's the simple way to compute the diagonal length of a 3D mesh bounding box?

I would like to compute the diagonal length of the bounding box of a 3D mesh. Using C++, I iterate of the ... the bounding box. Any help please? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Is there a more efficient way of texturing a circle?

I'm trying to create a randomly generated "planet" (circle), and I want the areas of water, land ... expensive? Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Converting an svg arc to lines

I am trying to convert an SVG arc to a series of line segments. The background is, that I want to draw an ... the ellipse arc and its rotation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Boundary enclosing a given set of points

I am having a bit of a problem with an algorithm that I am currently using. I wanted it to make a boundary. ... I didn't find a solution yet See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Transfer coordinates from one triangle to another triangle

I have two triangles , which can be in any sizes. The problem is that, how I can transfer coordinates from one ... . Thank you for any help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - How to determine whether a point (X,Y) is contained within an arc section of a circle (i.e. a Pie slice)?

Imagine a circle. Imagine a pie. Imagine trying to return a bool that determines whether the provided parameters of ... within the pie slide. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Efficiently find points inside a circle sector

I have a set of 2d points distributed randomly. I need to perform a time intensive operation on a small subset of ... that requires a lot of it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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geometry - Make a upside down triangle in java

I am trying to make the triangle I have made up side down. Tried many times, but I don't know how to do ... I can "flip" this triangle? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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644 views

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geometry - How to test if a point is inside of a convex polygon in 2D integer coordinates?

The polygon is given as a list of Vector2I objects (2 dimensional, integer coordinates). How can i test if a given ... as i will port it myself. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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806 views

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geometry - A JavaScript function that returns the x,y points of intersection between two circles?

I got the (x,y) center location of two circles and their radius but I need to find their intersection ... you express that in JavaScript? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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704 views

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geometry - How to calculate the area of a polygon on the earth's surface using python?

The title basically says it all. I need to calculate the area inside a polygon on the Earth's surface using Python. ... do I do this in Python? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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geometry - How do I reverse-project 2D points into 3D?

I have 4 2D points in screen-space, and I need to reverse-project them back into 3D space. I know that ... led me to any helpful information. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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396 views

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geometry - Problem superimposing and aligning 3D triangles

I am trying to superimpose two 3D triangles for a molecular modeling problem. It seemed simple enough. I translated ... ? Thanks for any help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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782 views

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geometry - How do I determine if two convex polygons intersect?

Suppose there are a number of convex polygons on a plane, perhaps a map. These polygons can bump up against each ... go through all the effort. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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