This tool is used to generate either a quad/rectangle or a line. For this purpose, two points are used to define the geometry. To create a quad, the defining points need to be in a plane parallel to the XY, YZ or YZplane. To create a line, they must define a line parallel to the standard basis vectors of 3D space. Quads and lines then can be combined to create more complex geometries. This tool is mainly used to create simple geometries for benchmarking or testing purposes.
USAGE:
generateGeometry o <output file>
[polyline_name <name of the generated polyline>]
[geometry_name <name of the geometry>]
[nz1 <number of subdivisions in z direction>]
[nz <number of subdivisions in z direction>]
[ny1 <number of subdivisions in y direction>]
[ny <number of subdivisions in y direction>]
[nx1 <number of subdivisions in x direction>]
[nx <number of subdivisions in x direction>]
x1 <x1> y1 <y1> z1 <z1> x0 <x0> y0 <y0> z0 <z0>
[] [version] [h]
Where:
o <output file>, output <output file>
(required) output geometry file (*.gml)
polyline_name <name of the generated polyline>
name of the generated polyline
geometry_name <name of the geometry>
name of the generated geometry
nz1 <number of subdivisions in z direction>
number of subdivisions in z direction
nz <number of subdivisions in z direction>
number of subdivisions in z direction
ny1 <number of subdivisions in y direction>
number of subdivisions in y direction
ny <number of subdivisions in y direction>
number of subdivisions in y direction
nx1 <number of subdivisions in x direction>
number of subdivisions in x direction
nx <number of subdivisions in x direction>
number of subdivisions in x direction
x1 <x1>
(required) x coordinate of the first point
y1 <y1>
(required) y coordinate of the first point
z1 <z1>
(required) z coordinate of the first point
x0 <x0>
(required) x coordinate of the first point
y0 <y0>
(required) y coordinate of the first point
z0 <z0>
(required) z coordinate of the first point
, ignore_rest
Ignores the rest of the labeled arguments following this flag.
version
Displays version information and exits.
h, help
Displays usage information and exits.
Subdivisions can be made along all 4 edges of a quad.
The input is a number that defines the amount of equidistant points that are created on the corresponding edge/line.
When a mesh is generated using this geometry, these points are also integrated into the mesh.
Generating subdivisions along a line is done by nx
, ny
or nz
depending on the axis the line is parallel to.
In this example we generate a line by defining two points p0 = (4,2,3) and p1= (15,2,3). Here, a line is generated because y0 = y1 = 2 and z0 = z1 = 3 for the two points. This means the defined points are in a line parallel to the xaxis.
generateGeometry o line.gml x0 4 x1 15 y0 2 y1 2 z0 3 z1 3
In this example we generate a quad by defining two points p0 = (1,2,3) and p1= (10,20,3). Here, a plane is generated because z0 = z1 = 3 for the two points. This means the defined points are in a plane parallel to xyplane.
generateGeometry o quad.gml x0 1 x1 10 y0 2 y1 20 z0 3 z1 3
Fig.1 Visualization of the generated quad and the line viewed along the zaxis.
This article was written by Julian Heinze. If you are missing something or you find an error please let us know.
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Last revision: July 12, 2023
Commit: [PL/SSD] Rename x_dot to x_prev 04a8fec8
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