def __init__(self):
super(LidarLocator, self).__init__()
self.__fileNameValue = ""
self.__scene = Scene(None, exts = {'FabricLIDAR': ''}, guarded = True)
self.__viewport = EmulatedViewport(self.__scene)
self.__parser = None
class LidarLocator(OpenMayaMPx.MPxLocatorNode):
__fileName = OpenMaya.MObject()
__fileNameValue = None
__scene = None
__viewport = None
__parser = None
__instance = None
def __init__(self):
super(LidarLocator, self).__init__()
self.__fileNameValue = ""
self.__scene = Scene(None, exts = {'FabricLIDAR': ''}, guarded = True)
self.__viewport = EmulatedViewport(self.__scene)
self.__parser = None
def __del__(self):
self.__parser = None
self.__viewport = None
self.__scene.close()
self.__scene = None
def draw(self, view, path, style, status):
fileNameValue = OpenMaya.MPlug(self.thisMObject(), LidarLocator.__fileName).asString()
if not fileNameValue == self.__fileNameValue:
self.__fileNameValue = fileNameValue
# todo: proper file checking
if self.__parser is None:
self.__parser = LidarParser(self.__scene, url = self.__fileNameValue)
# setup the shader group
group = ShaderGroup(self.__scene)
self.__viewport.addShaderGroupNode(group)
# compute the bbox of the points
points = self.__parser.getPointsNode()
bbox = points.getBoundingBox()
center = bbox['min'].add(bbox['max']).multiplyScalar(0.5).negate()
scale = Vec3(1.0, 1.0, 1.0).multiplyScalar(0.01)
center = center.multiply(scale)
# create the material
material = Material(self.__scene, xmlFile='Standard/FlatVertexColor', shaderGroup=group)
self.__instance = Instance(self.__scene,
transform = Transform(self.__scene, globalXfo = Xfo(tr = center, sc = scale)),
geometry = points,
material = material
)
else:
self.__parser.setUrl(self.__fileNameValue)
# retrieve both the inv camera matrix as well as projection matrix
cameraDag = OpenMaya.MDagPath()
view.getCamera(cameraDag)
invCameraMat = cameraDag.inclusiveMatrix().inverse()
projectionMat = OpenMaya.MMatrix()
view.projectionMatrix(projectionMat)
self.__viewport.setMatrices(invCameraMat, projectionMat)
# render the fabric creation platform content
self.__viewport.redraw()
@staticmethod
def creator():
return OpenMayaMPx.asMPxPtr( LidarLocator() )
@staticmethod
def initializer():
tAttr = OpenMaya.MFnTypedAttribute()
LidarLocator.__fileName = tAttr.create("fileName", "fn", OpenMaya.MFnData.kString)
tAttr.setStorable(1)
tAttr.setUsedAsFilename(1)
LidarLocator.addAttribute(LidarLocator.__fileName)
return OpenMaya.MStatus.kSuccess