plot of 3d arc

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satish sahu
satish sahu 2012-3-27
I have three points describing an arc of a circle in three-dimensions.
  • center point p0=(x0,y0,z0)
  • starting point p1=(x1,y1,z1)
  • end point p2=(x2,y2,z2)
I want plot the arc for
  • case where I know (x0,y0,z0, x1,y1,z1, x2,y2,z2)
  • case where I know (x0,y0,z0, x1,y1,z1, z2) unknown is (x2 y2)

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回答（1 个）

Doug Hull
Doug Hull 2012-3-27
Once you know representative points on the arc, you can use
plot3(x,y,z)
The tricky bit is generating the vectors x,y,z.
Knowing only the z value for an end point leaves the problem undefined. Actually, even where you know the endpoints entirely, there are two arcs.
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satish sahu
satish sahu 2012-3-28
thanks for comment..
but I am unable to find the equation of arc and representative point on arc...
can u help me to find the representative point of arc .

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