BezierPolygon

Create a curve or solid polygon consisting of Bézier segments in 2D or 3D.

Syntax

model.geom(<tag>).create(<ftag>,"BezierPolygon");

model.geom(<tag>).feature(<ftag>).set(property,<value>);

model.geom(<tag>).feature(<ftag>).getType(property);

Description

Use model.geom(<tag>).create(<ftag>,"BezierPolygon") to create a Bézier polygon or a line segment. The following properties are available

Table 3-27: Valid Property/Value Pairs

Property	Value	Default	Description
degree	int[] | int	1	Degree of Bézier segments.
p	double[][]		Control points.
type	solid | open | closed	solid (2D) open (3D)	Object type. solid is not available in 3D.
w	double[]		Weights.
selresult	on | off	off	Create selections of all resulting objects.
selresultshow	all | obj | dom | bnd | edg | pnt | off	dom in 2D; edg in 3D.	Show selections, if selresult is on, in physics, materials, and so on; in part instances; or in 3D from a plane geometry. obj is not available in a component’s geometry. dom, bnd, and edg are not available in all features.
contributeto	String	none	Tag of cumulative selection to contribute to.

If type is open or closed, a curve consisting of line, quadratic, or cubic rational Bézier segments is constructed. If type is solid, the solid enclosed by such a closed polygon is constructed. If type is closed or solid, but the first and last control points are different, an extra linear segment is added to close the curve.

The degree of the nth segment is degree[n], and it must be 1 (linear), 2 (quadratic), or 3 (cubic). The nth segment has degree[n]+1 control points and weights. The weights are stored consecutively in the array w, which has length degree[0]+...+degree[N-1]+N, where N is the number of segments. The ith coordinates of the control points are stored consecutively in the array p[i]. Adjacent segments share the common control point, which means that p[i] has length degree[0]+...+degree[N-1]+1.

For a linear or cubic segment, the default weights are 1. For a quadratic segment, the default weights are 1, 1/, 1.

For information about the selresult and contributeto properties, see Selections of Geometric Entities.

Example

Construct a solid triangle b1 and an elliptic arc b2:

Code for use with Java

Model model = ModelUtil.create("Model1");

GeomSequence g = model.geom().create("geom1",2);

g.create("b1","BezierPolygon");

g.feature("b1").set("p", new double[][]{{0, 0, 2}, {1, 0 ,0}});

g.create("b2","BezierPolygon");

g.feature("b2").set("type","open");

g.feature("b2").set("degree",2);

g.feature("b2").set("p", new double[][]{{0, 1, 0}, {1, 2, 0}});

g.run();

Code for use with MATLAB

model = ModelUtil.create('Model1');

g = model.geom.create('geom1',2);

g.create('b1','BezierPolygon');

g.feature('b1').set('p', [[0, 0, 2]; [1, 0 ,0]]);

g.create('b2','BezierPolygon');

g.feature('b2').set('type','open');

g.feature('b2').set('degree',2);

g.feature('b2').set('p', [[0, 1, 0]; [1, 2,0]]);

g.run;

See Also

Polygon