Does enableRigidBodyVTKExport output 2 VTK files? Does it not have a group VTK file？

[duanlinlim]

{
"Configuration":
{
"pause": true,
"sim2D": true,
"timeStepSize": 0.0004,
"particleRadius": 0.025,
"colorMapType": 1,
"numberOfStepsPerRenderUpdate": 4,
"density0": 1000,
"simulationMethod": 4,
"gravitation": [0,-981,0],
"cflMethod": 1,
"cflFactor": 1,
"cflMaxTimeStepSize": 0.005,
"maxIterations": 100,
"maxError": 0.1,
"maxIterationsV": 100,
"maxErrorV": 0.1,
"stiffness": 50000,
"exponent": 7,
"velocityUpdateMethod": 0,
"enableDivergenceSolver": true,
"boundaryHandlingMethod": 2,
"enablePartioExport": true,
"particleAttributes": "velocity",
"partioAttributes": "density",
"enableRigidBodyVTKExport": true,
"enableRigidBodyExport": true,
"enableVTKExport": true

},
"Materials": [
	{
		"id": "Fluid",
		"surfaceTension": 0.2,
		"surfaceTensionMethod": 0,		
		"viscosity": 0.01,
		"viscosityMethod": 1, 
		"vorticityMethod": 1, 
		"vorticity": 0.1, 
		"viscosityOmega": 0.05,
		"inertiaInverse": 0.5,
		"renderMinValue": 0.0,
		"renderMaxValue": 5.0,
		"colorField": "red",
		"colorMapType": 4
	}
],
"RigidBodies": [
	{
		"id": 1,
		"geometryFile": "../models/UnitBox.obj",
		"translation": [0,3,0],
		"rotationAxis": [1, 0, 0],
		"rotationAngle": 0,
		"scale": [2, 6, 2.0],
		"color": [0.5, 0.5, 0.5, 1.0], 
		"isDynamic": false,
		"restitution" : 0.6,
		"friction" : 0.0,
		"collisionObjectType": 2,
		"collisionObjectScale": [3.1, 3, 3.1],	
		"testMesh": 1, 
		"isWall": true,
		"invertSDF": true,
		"mapInvert": true, 
		"mapThickness": 0.0,
		"mapResolution": [30,30,30]
	},
	{
		"id": 2,
		"geometryFile": "../models/sphere.obj",
		"isDynamic": false, 
		"density": 1500, 
		"translation": [0.0,5,0],
		"rotationAxis": [1, 0, 0],
		"rotationAngle": 0.0,
		"scale": [0.125, 0.125, 0.125],			
		"restitution" : 0.6,
		"friction" : 0.2,
		"color": [0.3, 0.5, 0.8, 1.0], 
		"collisionObjectType": 1,
		"collisionObjectScale": [0.5, 0.5, 0.5], 
		"testMesh": 1, 
		"isWall": false,
		"mapInvert": false, 
		"mapThickness": 0.0,
		"mapResolution": [25,25,25]
	},
	{
		"id": 3,
		"geometryFile": "../models/sphere.obj",
		"isDynamic": false, 
		"density": 1500, 
		"translation": [0.0,4.5,0],
		"rotationAxis": [1, 0, 0],
		"rotationAngle": 0.0,
		"scale": [0.125, 0.125, 0.125],
		"restitution" : 0.6,
		"friction" : 0.2,
		"color": [0.3, 0.5, 0.8, 1.0], 
		"collisionObjectType": 1,
		"collisionObjectScale": [0.5, 0.5, 0.5], 
		"testMesh": 1, 
		"isWall": false,
		"mapInvert": false, 
		"mapThickness": 0.0,
		"mapResolution": [25,25,25]
	}
],
"FluidBlocks": [
	{
		"denseMode": 0,
		"start": [-1, 0.0, -1],
		"end": [1, 6.0, 1],
		"translation": [0.025, 0.025, 0],
		"scale": [1, 1, 1]
	}
]	The vtk file output from the json file shows that the ball is stationary because enableRigidBody VTKExport only outputs the initial particles, so the ball remains stationary

}

[janbender]

The VTK exporter generates one file per static rigid body. If you have dynamics rigid bodies, the exporter will write one file per frame.

However, it should be quite straightforward to write an own exporter or to adapt the existing one.