Ellipse2d
A 2D ellipse is defined by its center and two half-axes. Note that in principle any two conjugate half-diameters can be used as axes, however some algorithms require that the major and minor half axes are known. By convention in this case, axis0 is the major half axis.
Constructors
| Constructor | Description |
new(center, axis0, axis1)
Signature: (center:V2d * axis0:V2d * axis1:V2d) -> unit
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Instance members
| Instance member | Description |
Area
Signature: float
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ForEachVector(count, index_vector_act)
Signature: (count:int * index_vector_act:Action<int,V2d>) -> unit
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Perform the supplied action for each of count vectors from the center of the ellipse to the circumference. |
GetPoint(alpha)
Signature: alpha:float -> V2d
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GetPoints(count)
Signature: count:int -> V2d []
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Get count points on the circumference of the ellipse. |
GetVector(alpha)
Signature: alpha:float -> V2d
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IsInvalid
Signature: bool
Modifiers: abstract |
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IsValid
Signature: bool
Modifiers: abstract |
Static members
| Static member | Description |
FromConjugateDiameters(center, a, b)
Signature: (center:V2d * a:V2d * b:V2d) -> Ellipse2d
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Construct ellipse from two conjugate diameters, and set Axis0 to the major axis and Axis1 to the minor axis. The algorithm was constructed from first principles. |
FromConjugateDiameters(...)
Signature: (center:V2d * a:V2d * b:V2d * major2:byref<float> * minor2:byref<float>) -> Ellipse2d
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Construct ellipse from two conjugate diameters, and set Axis0 to the major axis and Axis1 to the minor axis. The algorithm was constructed from first principles. Also computes the squared lengths of the major and minor half axis. |
