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Suppose that you want to create a radial pattern of bumps on a
BODY object
ent. As with the linear pattern example, radial patterns have an API function to facilitate their creation. The default behavior of this function:
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Produces pattern elements that rotate with the pattern
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Chooses an arbitrary starting direction (perpendicular to the specified normal)
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Fills a full 360-degree angle
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Uses a perfect circle as its elliptical perimeter
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To use the default behavior, you can generate and apply the pattern as follows:
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// define the pattern parameters
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pattern* pat = NULL;
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SPAposition center(,. . .,. . .);
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SPAvector normal(. . .,. . .,. . .);
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double spacing = . . .;
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int num_radial = . . .;
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int num_angular = . . .;
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// create the pattern
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outcome result = api_radial_pattern(pat, center,
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normal, num_radial, num_angular, spacing);
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check_outcome(result);
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// define the bump by one of its faces
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ENTITY_LIST face_list;
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result = api_get_faces(ent, face_list);
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check_outcome(result);
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FACE* bump_face = face_list[0];
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// apply the pattern to the face
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result = api_set_entity_pattern(bump_face, pat);
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check_outcome(result);
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// clean up
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pat->remove();
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