For example, the “blue line” will not be blocked by the geometry whereas the “orange line” may be blocked. I would like to find out which points on the building are able to see the vantage point and draw the “blue line”.
you can “extrude all points” with the gumball - in any direction to get the red lines.
then turn on the control points of those lines and set the outer once
to your target point.
you get the blue lines…connecting your points with the target…
now use _intersect _trim or what ever fits to your needs…
another command that might help you is _extrudeCrvToPoint