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Action:
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Creates a new pattern by applying a random keep-filter to an existing pattern.
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Prototype:
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outcome api_random_keep_pattern (
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pattern*& pat,
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// created pattern
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const pattern& in_pattern,
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// input pattern
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double keep_fraction,
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// approximate fraction
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// of elements to keep
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logical merge
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// merge flag
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= TRUE,
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AcisOptions* ao = NULL
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// acis options
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);
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Includes:
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#include "kernel/acis.hxx"
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#include "baseutil/logical.h"
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#include "kernel/kernapi/api/api.hxx"
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#include "kernel/kernutil/law/pattern.hxx"
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#include "kernel/kernutil/law/pattern_api.hxx"
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#include "kernel/kernapi/api/acis_options.hxx"
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Description:
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Applies a periodic keep-filter to an existing pattern, merging with any existing filter or, optionally (with
merge=FALSE), replacing it. The argument
fraction determines the fraction of pattern elements that are kept.
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The following code snippet shows an example of how this API can be used.
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// Create a pattern
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pattern* pat = NULL;
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SPAvector x_vec(4.0, 0, 0);
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int num_x = 12;
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SPAvector y_vec(0, 4.0, 0);
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int num_y = 12;
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check_outcome(result = api_linear_pattern(pat, x_vec, num_x, y_vec, num_y));
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// Modify the pattern
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pattern* mod_pat = NULL;
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double keep_fraction = 0.5;
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check_outcome(result = api_random_keep_pattern(mod_pat, *pat, keep_fraction));
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// Create a prism
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BODY* prism = NULL;
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double height = 1.0;
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double maj_rad = 1.0;
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double min_rad = 0.5;
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int num_sides = 3;
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check_outcome(result = api_make_prism(height, maj_rad, min_rad, num_sides, prism));
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// Apply the pattern to the prism
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check_outcome(result = api_set_entity_pattern(prism, mod_pat));
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// Clean up
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pat->remove();
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mod_pat->remove();
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Library:
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kernel
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Filename:
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kern/kernel/kernutil/law/pattern_api.hxx
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Effect:
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Changes model
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