Bézier curves/Intersections: Difference between revisions
→C implementation 2: Added gnu::const attributes to try to help an optimizer.
(→C implementation 2: Added gnu::const attributes to try to help an optimizer.) |
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// Convert a non-parametric spline from Bernstein basis to s-power.
[[gnu::const]] spower_spline
bernstein_spline_to_spower (bernstein_spline S)
{
Line 628:
// requires two applications of de Casteljau subdivision. On the other
// hand, subdivision requires two applications of the following.
[[gnu::const]] inline spower_spline
spower_spline_portion (spower_spline S, double t0, double t1)
{
Line 645:
}
[[gnu::const]] inline spower_curve
spower_curve_portion (spower_curve C, double t0, double t1)
{
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// Given a parametric curve, is it "flat enough" to have its quadratic
// terms removed?
[[gnu::const]] inline bool
flat_enough (spower_curve C, double tol)
{
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