Recent questions tagged math

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840 views

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math - One-to-one integer mapping function

We are using MySQL and developing an application where we'd like the ID sequence not to be publicly visible.. ... : http://pastebin.com/np28xhQF See Question&Answers more detail:os...

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

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768 views

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math - How can I make a "working" repeating decimal representation of a rational number?

I've figured out how to display the repeating part of a repeating decimal using OverBar. repeatingDecimal doesn't actually ... in Cases 3 and 4? See Question&Answers more detail:os...

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

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869 views

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math - Simple way to interpolate between points in 3D space to form a smooth surface

I'm trying to come up with a simple and efficient way to create a smooth surface which intersects a number of given ... a simple way to do 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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872 views

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math - Extracting View Frustum Planes (Gribb & Hartmann method)

I have been grappling with the Gribb/Hartmann method of extracting the Frustum planes for some time now, with little ... not in world-space... See Question&Answers more detail:os...

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

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1.2k views

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math - Converting a decimal to a mixed-radix (base) number

How do you convert a decimal number to mixed radix notation? I guess that given an input of an array of each ... of the values of each column. See Question&Answers more detail:os...

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

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879 views

1 answer

math - Moving a Point Along a Line in JavaScript Canvas

Let's say that I have the coordinates of a line (25,35 45,65, 30,85 - It would be a two part line). ... distance every frame. How can I do 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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897 views

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math - One-to-one integer mapping function

We are using MySQL and developing an application where we'd like the ID sequence not to be publicly visible.. ... : http://pastebin.com/np28xhQF See Question&Answers more detail:os...

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

0 votes

724 views

1 answer

math - How can I make a "working" repeating decimal representation of a rational number?

I've figured out how to display the repeating part of a repeating decimal using OverBar. repeatingDecimal doesn't actually ... in Cases 3 and 4? See Question&Answers more detail:os...

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

0 votes

898 views

1 answer

math - Simple way to interpolate between points in 3D space to form a smooth surface

I'm trying to come up with a simple and efficient way to create a smooth surface which intersects a number of given ... a simple way to do this? See Question&Answers more detail:os...

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

0 votes

964 views

1 answer

math - Extracting View Frustum Planes (Gribb & Hartmann method)

I have been grappling with the Gribb/Hartmann method of extracting the Frustum planes for some time now, with little ... not in world-space... See Question&Answers more detail:os...

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

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857 views

1 answer

math - Why does C++ mandate that complex only be instantiated for float, double, or long double?

According to the C++ ISO spec, §26.2/2: The effect of instantiating the template complex for any ... higher-precision real numbers, etc. See Question&Answers more detail:os...

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

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867 views

1 answer

math - Moving an Image in circular motion based on touch events in android

I am trying to move an ImageView (not rotate). The movement is supposed to be on the edge of a circle. This ... true; break; } return true; } See Question&Answers more detail:os...

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

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1.1k views

1 answer

math - Catmull-Rom splines in python

Is there a library or function in python to compute Catmull-Rom spline from three points ? What I need in the end ... testing (or to save time) See Question&Answers more detail:os...

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

0 votes

1.3k views

1 answer

math - Converting a decimal to a mixed-radix (base) number

How do you convert a decimal number to mixed radix notation? I guess that given an input of an array of each ... of the values of each column. See Question&Answers more detail:os...

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

0 votes

965 views

1 answer

math - Moving a Point Along a Line in JavaScript Canvas

Let's say that I have the coordinates of a line (25,35 45,65, 30,85 - It would be a two part line). ... distance every frame. How can I do this? See Question&Answers more detail:os...

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

0 votes

923 views

1 answer

math - One-to-one integer mapping function

We are using MySQL and developing an application where we'd like the ID sequence not to be publicly visible.. ... : http://pastebin.com/np28xhQF See Question&Answers more detail:os...

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

0 votes

745 views

1 answer

math - How can I make a "working" repeating decimal representation of a rational number?

I've figured out how to display the repeating part of a repeating decimal using OverBar. repeatingDecimal doesn't actually ... in Cases 3 and 4? See Question&Answers more detail:os...

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

0 votes

754 views

1 answer

math - Simple way to interpolate between points in 3D space to form a smooth surface

I'm trying to come up with a simple and efficient way to create a smooth surface which intersects a number of given ... a simple way to do this? See Question&Answers more detail:os...

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

0 votes

883 views

1 answer

math - Extracting View Frustum Planes (Gribb & Hartmann method)

I have been grappling with the Gribb/Hartmann method of extracting the Frustum planes for some time now, with little ... not in world-space... See Question&Answers more detail:os...

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

0 votes

1.0k views

1 answer

math - Is it possible to predict rand(0,10) in PHP?

I have a script where I use the rand function in PHP. Now I read some ghost stories that its real easy ... possible to predict the next number? See Question&Answers more detail:os...

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

0 votes

1.1k views

1 answer

math - How can I generate a set of points evenly distributed along the perimeter of an ellipse?

If I want to generate a bunch of points distributed uniformly around a circle, I can do this (python): r ... spaced points around an ellipse? See Question&Answers more detail:os...

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

0 votes

891 views

1 answer

math - Can anyone explain what this GLSL fragment shader is doing?

I realise this is a math-centric question but... if you look at this webpage (and have a good graphics card) http:// ... .x),1.0); } </script> See Question&Answers more detail:os...

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

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925 views

1 answer

math - What are the second-moments of a region?

I'm currently working on replicating some of the functionality of Matlab's regionprops function in Octave. ... beginner friendly? 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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947 views

1 answer

math - Calculate whether it is close to dawn/dusk based on sunrise/sunset?

Is it possible to calculate when dawn/dusk will be if I have the time for sunrise, sunset and the ... latitude of a particular 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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1.2k views

1 answer

math - 3d line-intersection code not working properly

I created this piece of code to get the intersection of two 3d line-segments. Unfortunately the result of this code ... s1_y)) return v end end See Question&Answers more detail:os...

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

0 votes

901 views

1 answer

math - Why does int exp1 = 14/20*100; equals '0' in java?

I'm trying to do some basic math and it keeps popping up as 0. I'm sure it has to do with it being an ... uses decimals. How do I do it? See Question&Answers more detail:os...

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

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1.2k views

1 answer

math - Calculating an NxN matrix determinant in C#

How do you calculate the determinant of an NxN matrix C# ? See Question&Answers more detail:os...

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

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792 views

1 answer

math - Smooth Hilbert curves

I'm trying to smooth out the path taken by a Hilbert curve. I can define the points and connect them by ... not searching for the right terms. See Question&Answers more detail:os...

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

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