I’ve an already drawn inclined line from a fixed point (saypoint (0,2) on Y-axis). The inclination is also fixed (say 150 tothe horizontal). My objective is to draw a circle with one quadrant at a fixedpoint (say point (1,0) on X-axis), so that, the line becomes a perfect tangentto the circle. The diameter of the circle may vary to make the line perfecttangent to the circle.
I can't control the location of a 3rd circle using ttr. I'm drawing two circles and then a 3rd tangent to both but I want the 3rd circle to be centered down below the two original ones and all it will do is be above them. See drawing.
I am attempting to keep the cable line of the crane always tangent to the circle at the top of the crane. The length of the crane (including the circle at the top) is being polar stretched but i am unable to keep the cable tangent to the top circle as i stretch and rotate the crane.
We have a need to select a tangent line/polyline etc and then select two other points we would then like to have the program draw an arc through the two points and yet still be tangent to the initial line/polyline that we picked. We don't care what the radius is as we believe there is only one solution anyway. It would be wonderful if we could just use the Arc command and select start>Second Point> then just use the Tangent Osnap but I guess that is out of the question :-)
The only code that I have come across that even resembles this only allows for one point not two (STILL VERY HANDY AND VERY SLICK)
(vl-load-com) (defun near_vertex_arr (obj / dxf_obj e_next obj_vlax pt_sel par pt_first pt_snd i bulge) ;bruno.valsecchi
[Code]....
How does everyone else hande this? By they way... I dont care what language it is written in :-)
I'm trying to change a routine i just wrote that draws 3d pipes. I wanted to make it so that when a user selects the beginning point and ending point of the pipe, the LISP changes the ucs to that vector, draws the circle at the beginning point and extrudes it to the second point.
It actually works great except when the ucs changes, so do my user points because of teh origin change. Is there a better way I might get this to do what I wnat it to?
(setq ip (getpoint " Pick First Point:"))(setq ep (getpoint " Pick Second Point:"))(command ".ucs" "za" ip ep)(setvar "osmode" 0)(command ".circle" ip "d" od)(command ".extrude" (entlast) "" (distance ip ep))(command ".ucs" "w")(setvar "osmode" oldsnap))
I was wondering the best way to draw a circle that passes through an endpoint of a line and then is tangent to another circle above it? I need to create a radius of 3.5 between the two points.
how can i draw this red line in autocad, its an arc from point 1 to point 3 in spherical 4 side segment? point 1 to point 2 to point 3 to point 4 closing the segment at point 1 and point 4 (fused)
I have a list function that asks for the user to pick points when it is run. It looks something like this (foo arg1 arg2) When invoked it asks the user to pick points and press enter when done It.
Instead of getting the points from the user i want to pass it a list of pre-defined points. The code cannot be changed so I must use it as is.Is this possible, if so how can it be done?
Is there a way the “Osnap” can “feel” the tangent of the "circle point style"?I’m wondering if there is a way that the “Osnap” can feel the circle “point style” (given in the screenshot below) such that it is snapped to its tangent?
I have come up with a parabolic curve from a 'Sag Chart' program for calculating wire sag between Utility Poles. I now need to place this curve into my Profile that has the poles laid out in it. I need to make the curve Tangent at each attachment point between two poles. The best I can do as of now is eyeball it in there which will get me the sag distance pretty closly but as any Autocad user knows if it isnt exactly aligned it will drive you nuts. I made a rough sketch of what im trying to do.
Working on Acad2012 3d Civil. I draw a circle of 4000' radius and another one of 2000' radius. I put a tangent line between the two circles and I do see the tangent symbol but when I zoom in real close, it's not. So now I can't trim the excess radius of the two circle. I do have a trim line pasted the two supposedly tangent points. Is this a CAD issue or is their a variable to change that actually makes the lines tangent.
i want to snap this line to where it would be at a tangent to the arc (as right), but as you see (left) when i hover with TAN snap it picks a tangent from the pick point, not from object's orientation.
at the moment i construct a tangent by rotating a copy of my line by 90°, and snapping it to centre of the arc. then extend out past arc, where the intersection is now the point i originally wanted to pick. make sense? gotta be a better way!