How to plot circular arc passes through 3 points ?

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Atakan Zeybek
Atakan Zeybek 2020-7-21
编辑： Bruno Luong 2020-7-22
Hello All,
I am trying to write a program which generates arc passes through 3 given points. To do that, I have written the code which finds the circle passes through 3 points, and calculated the angle of these points. I am making program plot between first and last points' angle values. However, linspace function creates a problem because it always takes the CCW. depending on middle point it can be CW. Is there any function or program which creates an arc given 3 points ? or is there any method like linspace which can wrap values around 2pi ?

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Atakan Zeybek
Atakan Zeybek 2020-7-22

更多回答（1 个）

Bruno Luong
Bruno Luong 2020-7-21
编辑：Bruno Luong 2020-7-22
Assuming you have angle vector in radian. Change
anglevectorCCW = linspace(angle1, angle2)
to
anglevectorCW = linspace(min(angle1,angle2),max(angle1,angle2)-2*pi);
for plot the other part of the circle.
  2 个评论
Atakan Zeybek
Atakan Zeybek 2020-7-22
points = [6 4;9 3;10 4];
it did not work for these points, unfortunately.
Bruno Luong
Bruno Luong 2020-7-22
编辑：Bruno Luong 2020-7-22
Show us your corresponding angle values, input arguments of LINSPACE and the command of plot the arc.
Don't care about the "points", which I have no clue why it's 3 x 1 array, doesn't make any sense since you seem to describe 3 points in the plane.

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