Recent questions tagged geometry

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geometry - Find area of circle on a grid using euclidean distance?

I would like to have a function where I can input a radius value and have said function spit out the area for that size ... 7: 149 8: 197 9: 253 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - How to do a shader to convert to azimuthal_equidistant

I have a 360 texture in Equirectangular Projection. With what GLSL shader can I convert it into a azimuthal equidistant ... =24.64,98.15,169 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

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geometry - Minimal rectangle containing all intersections of lines

I'm trying to find an algorithm that will find all the intersections of a set of lines and compute the minimal ... let me know. Thanks :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Express SVG arc as series of curves

I'm trying to accurately express an SVG Path as a UIBezierPath however sadly the addArc on UIBezierPath does not ... cString) } return string } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - how to order vertices in a simple, non-convex polygon

I have a problem where I have a series of points for a simple, non-convex polygon (I hope I have the ... perhaps another approach is called for. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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geometry - Rounding Inaccuracies When Combining Areas in Java?

I'm working with Areas in Java. My test program draws three random triangles and combines them to form one ... successful case: A failing case: See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Find out if a rectangle is inside another rectangle [C]

So I have two rectangles, the user has to input the bottom left point (x1,y1, but y1 is always 0) and the ... check in the case of 2 rectangles. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Is there a circle class in Java like the Rectangle class

Hey I was writing a quick program and something came across where I need to use a circle for collision detection. ... I could use the same way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Covering an arbitrary area with circles of equal radius

How would an algorithm work that covers an arbitrary area with circles of equal radius? The radius of the ... algorithm that will handle this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - Fastest way to compute point to triangle distance in 3D?

One obvious method for computing the minimum distance from a point to a 3D triangle is to project the point onto ... up or simplify it somehow? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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536 views

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geometry - 3d to 2d Projection Matrix

I have 3 points in a 3D space of which I know the exact locations. Suppose they are: (x0,y0,z0), ... t know anything about the camera location. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - How do I make a CSS triangle with smooth edges?

I have a triangle (JSFiddle) using this CSS: .triangle { width: 0; height: 0; border-top: 0; border-bottom ... the triangles in Firefox and IE.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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geometry - How to know if a line intersects a plane in C#?

I have two points (a line segment) and a rectangle. I would like to know how to calculate if the line segment intersects the rectangle. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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681 views

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geometry - Math for a geodesic sphere

I'm trying to create a very specific geodesic tessellation, but I can't find anything online about it. ... for generating such tessellations. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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552 views

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geometry - Algorithm to merge adjacent rectangles into polygon

I guess that my problem is related to "convex hull", but no the same. All shapes in the drawing are ... any open source algorithm available? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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498 views

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geometry - How do I derive a Voronoi diagram given its point set and its Delaunay triangulation?

I'm working on a game where I create a random map of provinces (a la Risk or Diplomacy). To create that ... as opposed to optimal speed. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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531 views

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geometry - Cheap algorithm to find measure of angle between vectors

Finding the angle between two vectors is not hard using the cosine rule. However, because I am programming for ... up with something myself. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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731 views

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geometry - WPF: is it possible to render a circle using GeometryDrawing?

I've got a GeometryDrawing similar like this: <DrawingImage x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type ... to draw a circle? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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geometry - How does Silverlight Image Clipping work?

I've got a very large image which I'd like to use for sprite techniques (à la css image sprites). I've ... this, please reply with an answer. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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449 views

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geometry - Detecting arbitrary shapes

Greetings, We have a set of points which represent an intersection of a 3d body and a horizontal plane. We would ... way to do this? Thank you See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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756 views

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geometry - Line Segment Circle Intersection

I am trying to determine the point at which a line segment intersect a circle. For example, given any point ... easiest method to determine P3? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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414 views

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geometry - Given 2 points how do I draw a line at a right angle to the line formed by the two points?

Idealy I want to supply a sequence of points and have a line drawn at a right angle at every point (starting ... any two points on the curve). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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683 views

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geometry - Drawing a circle Google Static Maps

I have a Google Maps Circle drawn on v3 api. When the user has plotted there circle (or polygon if they choose ... static maps to draw a circle. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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555 views

1 answer

geometry - How to make a curve on a rectangle's top in css? only in top edge

I want to create the following shape: Important: if I use "Border Radius" I get this (and I do not want this result): See Question&Answers more detail:os...

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

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458 views

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geometry - For a point in an irregular polygon, what is the most efficient way to select the edge closest to the point?

Given an irregular polygon and a point within that polygon, how do I determine which edge in the polygon is closest to ... e.g. 50-200 points). See Question&Answers more detail:os...

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

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390 views

1 answer

geometry - Perspective Projection in Android in an augmented reality application

Currently I'm writing an augmented reality app and I have some problems to get the objects on my screen. ... to get the resulting screenpoint? See Question&Answers more detail:os...

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

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592 views

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geometry - OpenCV detect partial circle with noise

I have tried to use OpenCV HoughCircles and findContours to detect a circle however the circle isn't ... .collegemobile.com/IMG_2022.JPG See Question&Answers more detail:os...

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

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559 views

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geometry - calculating a sphere in opengl

I want to calculate all the vertices needed and connect them with lines, so I eventually come up with a sphere. How ... not the way it's done. See Question&Answers more detail:os...

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

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