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Action:
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Evaluates an arbitrary number of derivatives and selects the handedness of derivatives at discontinuities.
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Prototype:
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int bs2_curve_evaluate (
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double param,
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// given parameter
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bs2_curve cur,
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// given curve
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SPApar_pos& pos,
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// returned parametric
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// position
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SPApar_vec** deriv
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// array of at least nd
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= NULL,
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// pointers to locations
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// into which derivatives
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// are to be placed
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int nd
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// number of derivatives
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= 0,
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// to be evaluated
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int index
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// negative to evaluate
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= 0
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// the left-hand
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// derivative at a knot,
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// positive to evaluate
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// the right-hand
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// derivative, 0 for
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// don't care
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);
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Includes:
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#include "kernel/acis.hxx"
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#include "baseutil/vector/param.hxx"
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#include "kernel/spline/bs2_crv/bs2curve.hxx"
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#include "kernel/spline/bs2_crv/sp2crtn.hxx"
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Description:
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Gives an arbitrary number of derivatives (up to a maximum returned by
accurate_derivs), and selects the handedness of derivatives at discontinuities. This function returns the number of derivatives actually evaluated. Any derivatives requested but beyond the maximum are set to 0.
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Library:
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kernel
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Filename:
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kern/kernel/spline/bs2_crv/sp2crtn.hxx
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Effect:
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Read-only
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