Get point near the mouse cursor

[Alexey Vanzhula]

Hi. I want to find closest point to mouse pointer. It's not a problem when the mouse pointer intersects with a surface. But how to get the point if it is outside the surface? I have the pointer origin and direction 

https://s9.postimg.org/a8y8r58i7/image.png

Edited January 21, 2018 by Alexey Vanzhula

[f1480187]

If the origin is a proper 3D point with depth already accounted for, this should be relatively easy:

origin = (1, 1.2, 0)
op = hou.pwd().inputs()[0].path()
expr = 'nearpoint("{}", {}, {}, {})'.format(op, *origin)
pt = int(hou.hscriptExpression(expr))

 

[Alexey Vanzhula]

6 hours ago, f1480187 said:

If the origin is a proper 3D point with depth already accounted for, this should be relatively easy:

origin = (1, 1.2, 0)
op = hou.pwd().inputs()[0].path()
expr = 'nearpoint("{}", {}, {}, {})'.format(op, *origin)
pt = int(hou.hscriptExpression(expr))

 

The problem is how to find the depth in the "air" .

When the line (from ray and origin) intersects with the surface it is not a problem.