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Module category: Mapper
CuttingSurface extracts surfaces of different shape (planes, cylinders, spheres) and can also map isolines onto the plane. Linear interpolation is used to calculate the data values on the grid nodes of the resulting cutting surface.
Note: If you like colored output of CuttingSurface that you can connect directly to the Renderer, see CuttingSurfaceComp
CuttingSurface is available on all supported platforms.
Name | Type | Description |
vertex | Vector | Normal of the plane, center of the sphere or one point on the axis of the cylinder. |
point | Vector | One point on the cutting surface. |
scalar | Scalar | Distance of the origin to the plane or radius of the sphere or cylinder. |
option | Choice | Select the shape of the surface: plane, sphere, cylinder-x, cylinder-y, cylinder-z. cylinder-x means a cylinder with its axis in the direction of the x axis. |
gennormals | Boolean | Toggle the generation of normals. By default the generation of normals is turned off. The generated normals are available at the 3. output port named normalsOut. this port has to be connected to the 3. input port of the module Collect. |
genstrips | Boolean | Toggle the generation of triangle strips. By default the generation of triangle strips is turned on. |
genDummyS | Boolean | Toggle the generation of a dummy surface if the cutting surface doesn't intersect the object. By default the generation of the dummy surface strips is turned off. |
offset | Scalar | Specifies the hight, the isolines are lifted above the cuttingsurface. If you don't specify an offset parts of the isolines can be occluded by the surface due to the limited accuracy of the Z-buffer. If you specify negative offsets, the lines appear on the backside of the plane respectively the inside of the sphere or cylinder. |
numiso | Scalar | Specifies the number of isolines. |
isostart | Scalar | Initial value for isolines. |
isoend | Scalar | End value for isolines. |
vertex_ratio | Scalar | Percentage of grid used for memory allocation. (Details below.) |
Name | Type(s) | Description |
meshIn | UnstructuredGrid
UniformGrid StructuredGrid RectilinearGrid | input mesh |
dataIn | Float
Vec3 Float Vec3 | input data |
isoDataIn | Float
Float | Data for isolines |
isoMinMaxIn | MinMax_Data | MinMax values for isolines |
Name | Type(s) | Description |
meshOut | Polygons
TriangleStrips | Cuttingplane |
dataOut | Float
Vec3 | interpolated data |
normalsOut | Vec3 | Surface normals |
linesOut | Lines | Isolines |
max_vert = VERTEX_RATIO * num_vert_in ^ (2/3) VERTEX_RATIO = 4.0 by default.However, this setting might be too low. In this case, the module terminates execution, submits a message, increases the ratio by 1.0 and re-executes itself. To prevent this procedure, establish a higher starting value (e.g. 9.0) by putting a section into your covise.config file:
CuttingSurface { # Ratio of array size to number of input vertices in Percent VERTEX_RATIO 9.0 }
Example 1 shows covise/net/tutorial_pressure_1.net.
RWCovise_1 reads in the grid. The module DomainSurface computes the edges of the outer surface of the grid and the module Renderer displays the edges as white lines.
RWCovise_2 reads in the pressure values on the grid points. CuttingSurface_1 computes a cutting plane with the normal (0.0 0.0 1.0) and the distance (0.05).
The module Colors_2 is in the map only for creating a colormap with the minimum and maximum of all pressure values.
The interpolated data on the cutting plane are mapped to colors with the module Colors_1. The module Colors_1 inherits the colormap and minimum and maximum from Colors_2.
The module Collect creates triangle strips from the coordinates and the colors and the Renderer displays the resulting plane as colored polygons.
The next image is a snapshot of the results in the Inventor Renderer.
Example 2 shows covise/net/example/CuttingSurface_Normals.net.
The next image is a snapshot of the results in the Inventor Renderer (parameter "option" = Cylinder).
Authors: Martin Aumüller, Ruth Lang, Daniela Rainer, Jürgen Schulze-Döbold, Andreas Werner, Peter Wolf, Uwe Wössner |
Copyright © 1993-2022 HLRS, 2004-2014 RRZK, 2005-2014 Visenso |
COVISE Version 2021.12
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