MeshSubsetEngine

Extract a mesh subset based on selected vertices

Templates:

• Vec3d

Target: Sofa.Component.Engine.Select

namespace: sofa::component::engine::select

parents:

• DataEngine

Data:

Name	Description	Default value
name	object name	unnamed
printLog	if true, emits extra messages at runtime.	0
tags	list of the subsets the objet belongs to
bbox	this object bounding box
componentState	The state of the component among (Dirty, Valid, Undefined, Loading, Invalid).	Undefined
listening	if true, handle the events, otherwise ignore the events	0
Inputs
inputPosition	input vertices
inputEdges	input edges
inputTriangles	input triangles
inputQuads	input quads
indices	Index lists of the selected vertices
Outputs
position	Vertices of mesh subset
edges	edges of mesh subset
triangles	Triangles of mesh subset
quads	Quads of mesh subset

Links:

Name	Description
context	Graph Node containing this object (or BaseContext::getDefault() if no graph is used)
slaves	Sub-objects used internally by this object
master	nullptr for regular objects, or master object for which this object is one sub-objects

Examples

Component/Engine/Select/MeshSubsetEngine.scn

XMLPython

<?xml version="1.0"?>
<Node   name="root" gravity="0 -1 0" dt="0.05"  >
    <RequiredPlugin name="Sofa.Component.Engine.Select"/> <!-- Needed to use components [BoxROI MeshSubsetEngine] -->
    <RequiredPlugin name="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshOBJLoader] -->
    <RequiredPlugin name="Sofa.Component.Setting"/> <!-- Needed to use components [BackgroundSetting] -->
    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->

    <VisualStyle displayFlags="showBehaviorModels showForceFields" />
    <BackgroundSetting color="1 1 1"/>
    <DefaultAnimationLoop/>

    <MeshOBJLoader name="loader" filename="mesh/dragon.obj" />
    <BoxROI name="boxroi" template="Vec3" position="@loader.position" box="-15 0 -5 0 10 5" drawBoxes="1"/>
    <MeshSubsetEngine name="engine" inputPosition="@loader.position" inputTriangles="@loader.triangles" inputQuads="@loader.quads" indices="@boxroi.indices"/>

    <MeshOBJLoader name="meshLoader_0" filename="mesh/dragon.obj" handleSeams="1" />
    <OglModel name="Original Mesh (red)" src="@meshLoader_0" color="1 0 0 0.4" dz="0" />
    <OglModel name="Subset Mesh (blue)" position="@engine.position" triangles="@engine.triangles" quads="@engine.quads" color="0 0.4 1 1"  />

</Node>

def createScene(rootNode):

    root = rootNode.addChild('root', gravity="0 -1 0", dt="0.05")
    root.addObject('RequiredPlugin', name="Sofa.Component.Engine.Select")
    root.addObject('RequiredPlugin', name="Sofa.Component.IO.Mesh")
    root.addObject('RequiredPlugin', name="Sofa.Component.Setting")
    root.addObject('RequiredPlugin', name="Sofa.Component.Visual")
    root.addObject('RequiredPlugin', name="Sofa.GL.Component.Rendering3D")
    root.addObject('VisualStyle', displayFlags="showBehaviorModels showForceFields")
    root.addObject('BackgroundSetting', color="1 1 1")
    root.addObject('DefaultAnimationLoop')
    root.addObject('MeshOBJLoader', name="loader", filename="mesh/dragon.obj")
    root.addObject('BoxROI', name="boxroi", template="Vec3", position="@loader.position", box="-15 0 -5 0 10 5", drawBoxes="1")
    root.addObject('MeshSubsetEngine', name="engine", inputPosition="@loader.position", inputTriangles="@loader.triangles", inputQuads="@loader.quads", indices="@boxroi.indices")
    root.addObject('MeshOBJLoader', name="meshLoader_0", filename="mesh/dragon.obj", handleSeams="1")
    root.addObject('OglModel', name="Original Mesh (red)", src="@meshLoader_0", color="1 0 0 0.4", dz="0")
    root.addObject('OglModel', name="Subset Mesh (blue)", position="@engine.position", triangles="@engine.triangles", quads="@engine.quads", color="0 0.4 1 1")