Bézier curves/Intersections: Difference between revisions
Content added Content deleted
(→{{header|Scheme}}: Scheme predicates should have ? in their names.) |
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(else (compare-to-tol-inf-norm)))) |
(else (compare-to-tol-inf-norm)))) |
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(define (flat-enough portion norm rtol atol) |
(define (flat-enough? portion norm rtol atol) |
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;; Is the portion flat enough or small enough to be treated as |
;; Is the portion flat enough or small enough to be treated as |
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;; if it were a line segment? |
;; if it were a line segment? |
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(endpt1@ qportion))) |
(endpt1@ qportion))) |
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(loop workload params) |
(loop workload params) |
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(if (flat-enough pportion norm rtol atol) |
(if (flat-enough? pportion norm rtol atol) |
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(if (flat-enough qportion norm rtol atol) |
(if (flat-enough? qportion norm rtol atol) |
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(let-values |
(let-values |
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(((tp tq) |
(((tp tq) |
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. ,workload) |
. ,workload) |
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params))) |
params))) |
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(if (flat-enough qportion norm rtol atol) |
(if (flat-enough? qportion norm rtol atol) |
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(let-values (((pport1 pport2) |
(let-values (((pport1 pport2) |
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(bisect-portion pportion))) |
(bisect-portion pportion))) |
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