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BroderickCalpe

Intercepting a line

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Waterlimon    4398

Use google?

 

What kind of intersection you want to check for?

Some specific like line-plane (line-triangle?)?

 

Or do you want to know how to properly check for intersection with a big model with many triangles?

 

Or perhaps you want something like raycasting?

Edited by Waterlimon

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landagen    376

Here is how I would do it:

 

the distance from one point to another is sqrt( (X2 - X1)^2 + (Y2 - Y1)^2 + (Z2 - Z1)^2 )

 

The equation for your line is  0xi + 1yj + 0zk => yj

 

So you would want to see if that line ever comes closer to the center of the sphere than the radius of the sphere.  So basically, is there any value of y (for your line) that would make the distance calculation above be less than or equal to R.

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