I am attempting to draw an Arc using a CatmulRomSpline. I am setting 3 control points and then using evaluate to generate the points in between. I am evaluating 200 points which I thought would be enough. The Arc displays, but appears flattened, a little more like an ellipse sector than a circle sector. I have attached a document with the display using the points from the spline as well as points using our own function based upon a circle sector.
I see that there are firstTangent and lastTangent optional parameters. Will these allow me to control the shape of the arc? How are these used? I cannot find an example. I see that it is a Cartesian3 value rather than an angular based value.
Do I need to set more control points?
Should I be using a different type of spline or another method?
I appreciate you help with this.
Arcs.docx (1.82 MB)