void CScriptedShapeTranslator::RunScripts(AtNode *atNode, unsigned int step, bool update)
{
std::map<std::string, CScriptedTranslator>::iterator translatorIt;
MFnDependencyNode fnNode(GetMayaObject());
translatorIt = gTranslators.find(fnNode.typeName().asChar());
if (translatorIt == gTranslators.end())
{
AiMsgError("[mtoa.scriptedTranslators] No command to export node \"%s\" of type %s.", fnNode.name().asChar(), fnNode.typeName().asChar());
return;
}
MString exportCmd = translatorIt->second.exportCmd;
MString cleanupCmd = translatorIt->second.cleanupCmd;
MFnDagNode node(m_dagPath.node());
bool isMasterDag = false;
bool transformBlur = IsMotionBlurEnabled(MTOA_MBLUR_OBJECT) && IsLocalMotionBlurEnabled();
bool deformBlur = IsMotionBlurEnabled(MTOA_MBLUR_DEFORM) && IsLocalMotionBlurEnabled();
char buffer[64];
MString command = exportCmd;
command += "(";
sprintf(buffer, "%f", GetExportFrame());
command += buffer;
command += ", ";
sprintf(buffer, "%d", step);
command += buffer;
command += ", ";
// current sample frame
sprintf(buffer, "%f", GetSampleFrame(m_session, step));
command += buffer;
command += ", ";
// List of arnold attributes the custom shape export command has overriden
MStringArray attrs;
if (!m_masterNode)
{
command += "(\"" + m_dagPath.partialPathName() + "\", \"";
command += AiNodeGetName(atNode);
command += "\"), None)";
isMasterDag = true;
}
else
{
command += "(\"" + m_dagPath.partialPathName() + "\", \"";
command += AiNodeGetName(atNode);
command += "\"), (\"" + GetMasterInstance().partialPathName() + "\", \"";
command += AiNodeGetName(m_masterNode);
command += "\"))";
}
MStatus status = MGlobal::executePythonCommand(command, attrs);
if (!status)
{
AiMsgError("[mtoa.scriptedTranslators] Failed to export node \"%s\".", node.name().asChar());
return;
}
// Build set of attributes already processed
std::set<std::string> attrsSet;
for (unsigned int i=0; i<attrs.length(); ++i)
{
attrsSet.insert(attrs[i].asChar());
}
std::set<std::string>::iterator attrsEnd = attrsSet.end();
// Should be getting displacement shader from master instance only
// as arnold do not support displacement shader overrides for ginstance
MFnDependencyNode masterShadingEngine;
MFnDependencyNode shadingEngine;
float dispPadding = -AI_BIG;
float dispHeight = 1.0f;
float dispZeroValue = 0.0f;
bool dispAutobump = false;
bool outputDispPadding = false;
bool outputDispHeight = false;
bool outputDispZeroValue = false;
bool outputDispAutobump = false;
const AtNodeEntry *anodeEntry = AiNodeGetNodeEntry(atNode);
GetShapeInstanceShader(m_dagPath, shadingEngine);
if (!IsMasterInstance())
{
GetShapeInstanceShader(GetMasterInstance(), masterShadingEngine);
}
else
{
masterShadingEngine.setObject(shadingEngine.object());
}
AtMatrix matrix;
MMatrix mmatrix = m_dagPath.inclusiveMatrix();
ConvertMatrix(matrix, mmatrix);
// Set transformation matrix
if (attrsSet.find("matrix") == attrsEnd)
{
if (HasParameter(anodeEntry, "matrix"))
{
if (transformBlur)
{
if (step == 0)
{
AtArray* matrices = AiArrayAllocate(1, GetNumMotionSteps(), AI_TYPE_MATRIX);
AiArraySetMtx(matrices, step, matrix);
AiNodeSetArray(atNode, "matrix", matrices);
}
else
{
AtArray* matrices = AiNodeGetArray(atNode, "matrix");
AiArraySetMtx(matrices, step, matrix);
}
}
else
{
AiNodeSetMatrix(atNode, "matrix", matrix);
}
}
}
// Set bounding box
if (attrsSet.find("min") == attrsEnd && attrsSet.find("max") == attrsEnd)
{
// Now check if min and max parameters are valid parameter names on arnold node
if (HasParameter(anodeEntry, "min") != 0 && HasParameter(anodeEntry, "max") != 0)
{
if (step == 0)
{
MBoundingBox bbox = node.boundingBox();
MPoint bmin = bbox.min();
MPoint bmax = bbox.max();
AiNodeSetPnt(atNode, "min", static_cast<float>(bmin.x), static_cast<float>(bmin.y), static_cast<float>(bmin.z));
AiNodeSetPnt(atNode, "max", static_cast<float>(bmax.x), static_cast<float>(bmax.y), static_cast<float>(bmax.z));
}
else
{
if (transformBlur || deformBlur)
{
AtPoint cmin = AiNodeGetPnt(atNode, "min");
AtPoint cmax = AiNodeGetPnt(atNode, "max");
MBoundingBox bbox = node.boundingBox();
MPoint bmin = bbox.min();
MPoint bmax = bbox.max();
if (bmin.x < cmin.x)
cmin.x = static_cast<float>(bmin.x);
if (bmin.y < cmin.y)
cmin.y = static_cast<float>(bmin.y);
if (bmin.z < cmin.z)
cmin.z = static_cast<float>(bmin.z);
if (bmax.x > cmax.x)
cmax.x = static_cast<float>(bmax.x);
if (bmax.y > cmax.y)
cmax.y = static_cast<float>(bmax.y);
if (bmax.z > cmax.z)
cmax.z = static_cast<float>(bmax.z);
AiNodeSetPnt(atNode, "min", cmin.x, cmin.y, cmin.z);
AiNodeSetPnt(atNode, "max", cmax.x, cmax.y, cmax.z);
}
}
}
}
if (step == 0)
{
// Set common attributes
MPlug plug;
if (AiNodeIs(atNode, "procedural"))
{
// Note: it is up to the procedural to properly forward (or not) those parameters to the node
// it creates
if (attrsSet.find("subdiv_type") == attrsEnd)
{
plug = FindMayaPlug("subdiv_type");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivType");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_type", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "subdiv_type", plug.asInt());
}
}
if (attrsSet.find("subdiv_iterations") == attrsEnd)
{
plug = FindMayaPlug("subdiv_iterations");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivIterations");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_iterations", atNode, "constant BYTE"))
{
AiNodeSetByte(atNode, "subdiv_iterations", plug.asInt());
}
}
if (attrsSet.find("subdiv_adaptive_metric") == attrsEnd)
{
plug = FindMayaPlug("subdiv_adaptive_metric");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivAdaptiveMetric");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_adaptive_metric", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "subdiv_adaptive_metric", plug.asInt());
}
}
if (attrsSet.find("subdiv_pixel_error") == attrsEnd)
{
plug = FindMayaPlug("subdiv_pixel_error");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivPixelError");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_pixel_error", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "subdiv_pixel_error", plug.asFloat());
}
}
if (attrsSet.find("subdiv_dicing_camera") == attrsEnd)
{
plug = FindMayaPlug("subdiv_dicing_camera");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivDicingCamera");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_dicing_camera", atNode, "constant NODE"))
{
AtNode *cameraNode = NULL;
MPlugArray plugs;
plug.connectedTo(plugs, true, false);
if (plugs.length() == 1)
{
MFnDagNode camDag(plugs[0].node());
MDagPath camPath;
if (camDag.getPath(camPath) == MS::kSuccess)
{
cameraNode = ExportDagPath(camPath);
}
}
AiNodeSetPtr(atNode, "subdiv_dicing_camera", cameraNode);
}
}
if (attrsSet.find("subdiv_uv_smoothing") == attrsEnd)
{
plug = FindMayaPlug("subdiv_uv_smoothing");
if (plug.isNull())
{
plug = FindMayaPlug("aiSubdivUvSmoothing");
}
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_uv_smoothing", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "subdiv_uv_smoothing", plug.asInt());
}
}
if (attrsSet.find("subdiv_smooth_derivs") == attrsEnd)
{
plug = FindMayaPlug("aiSubdivSmoothDerivs");
if (!plug.isNull() && HasParameter(anodeEntry, "subdiv_smooth_derivs", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "subdiv_smooth_derivs", plug.asBool());
}
}
if (attrsSet.find("smoothing") == attrsEnd)
{
// Use maya shape built-in attribute
plug = FindMayaPlug("smoothShading");
if (!plug.isNull() && HasParameter(anodeEntry, "smoothing", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "smoothing", plug.asBool());
}
}
if (attrsSet.find("disp_height") == attrsEnd)
{
plug = FindMayaPlug("aiDispHeight");
if (!plug.isNull())
{
outputDispHeight = true;
dispHeight = plug.asFloat();
}
}
if (attrsSet.find("disp_zero_value") == attrsEnd)
{
plug = FindMayaPlug("aiDispZeroValue");
if (!plug.isNull())
{
outputDispZeroValue = true;
dispZeroValue = plug.asFloat();
}
}
if (attrsSet.find("disp_autobump") == attrsEnd)
{
plug = FindMayaPlug("aiDispAutobump");
if (!plug.isNull())
{
outputDispAutobump = true;
dispAutobump = plug.asBool();
}
}
if (attrsSet.find("disp_padding") == attrsEnd)
{
plug = FindMayaPlug("aiDispPadding");
if (!plug.isNull())
{
outputDispPadding = true;
dispPadding = MAX(dispPadding, plug.asFloat());
}
}
// Set diplacement shader
if (attrsSet.find("disp_map") == attrsEnd)
{
if (masterShadingEngine.object() != MObject::kNullObj)
{
MPlugArray shaderConns;
MPlug shaderPlug = masterShadingEngine.findPlug("displacementShader");
shaderPlug.connectedTo(shaderConns, true, false);
if (shaderConns.length() > 0)
{
MFnDependencyNode dispNode(shaderConns[0].node());
plug = dispNode.findPlug("aiDisplacementPadding");
if (!plug.isNull())
{
outputDispPadding = true;
dispPadding = MAX(dispPadding, plug.asFloat());
}
plug = dispNode.findPlug("aiDisplacementAutoBump");
if (!plug.isNull())
{
outputDispAutobump = true;
dispAutobump = dispAutobump || plug.asBool();
}
if (HasParameter(anodeEntry, "disp_map", atNode, "constant ARRAY NODE"))
{
AtNode *dispImage = ExportNode(shaderConns[0]);
AiNodeSetArray(atNode, "disp_map", AiArrayConvert(1, 1, AI_TYPE_NODE, &dispImage));
}
}
}
}
if (outputDispHeight && HasParameter(anodeEntry, "disp_height", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "disp_height", dispHeight);
}
if (outputDispZeroValue && HasParameter(anodeEntry, "disp_zero_value", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "disp_zero_value", dispZeroValue);
}
if (outputDispPadding && HasParameter(anodeEntry, "disp_padding", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "disp_padding", dispPadding);
}
if (outputDispAutobump && HasParameter(anodeEntry, "disp_autobump", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "disp_autobump", dispAutobump);
}
// Old point based SSS parameter
if (attrsSet.find("sss_sample_distribution") == attrsEnd)
{
plug = FindMayaPlug("sss_sample_distribution");
if (plug.isNull())
{
plug = FindMayaPlug("aiSssSampleDistribution");
}
if (!plug.isNull() && HasParameter(anodeEntry, "sss_sample_distribution", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "sss_sample_distribution", plug.asInt());
}
}
// Old point based SSS parameter
if (attrsSet.find("sss_sample_spacing") == attrsEnd)
{
plug = FindMayaPlug("sss_sample_spacing");
if (plug.isNull())
{
plug = FindMayaPlug("aiSssSampleSpacing");
}
if (!plug.isNull() && HasParameter(anodeEntry, "sss_sample_spacing", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "sss_sample_spacing", plug.asFloat());
}
}
if (attrsSet.find("min_pixel_width") == attrsEnd)
{
plug = FindMayaPlug("aiMinPixelWidth");
if (!plug.isNull() && HasParameter(anodeEntry, "min_pixel_width", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "min_pixel_width", plug.asFloat());
}
}
if (attrsSet.find("mode") == attrsEnd)
{
plug = FindMayaPlug("aiMode");
if (!plug.isNull() && HasParameter(anodeEntry, "mode", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "mode", plug.asShort());
}
}
if (attrsSet.find("basis") == attrsEnd)
{
plug = FindMayaPlug("aiBasis");
if (!plug.isNull() && HasParameter(anodeEntry, "basis", atNode, "constant INT"))
{
AiNodeSetInt(atNode, "basis", plug.asShort());
}
}
}
if (AiNodeIs(atNode, "ginstance"))
{
if (attrsSet.find("node") == attrsEnd)
{
AiNodeSetPtr(atNode, "node", m_masterNode);
}
if (attrsSet.find("inherit_xform") == attrsEnd)
{
AiNodeSetBool(atNode, "inherit_xform", false);
}
}
else
{
// box or procedural
if (attrsSet.find("step_size") == attrsEnd)
{
plug = FindMayaPlug("step_size");
if (plug.isNull())
{
plug = FindMayaPlug("aiStepSize");
}
if (!plug.isNull() && HasParameter(anodeEntry, "step_size", atNode, "constant FLOAT"))
{
AiNodeSetFlt(atNode, "step_size", plug.asFloat());
}
}
}
if (attrsSet.find("sidedness") == attrsEnd)
{
// Use maya shape built-in attribute
plug = FindMayaPlug("doubleSided");
if (!plug.isNull() && HasParameter(anodeEntry, "sidedness", atNode, "constant BYTE"))
{
AiNodeSetByte(atNode, "sidedness", plug.asBool() ? AI_RAY_ALL : 0);
// Only set invert_normals if doubleSided attribute could be found
if (!plug.asBool() && attrsSet.find("invert_normals") == attrsEnd)
{
// Use maya shape built-in attribute
plug = FindMayaPlug("opposite");
if (!plug.isNull() && HasParameter(anodeEntry, "invert_normals", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "invert_normals", plug.asBool());
}
}
}
}
if (attrsSet.find("receive_shadows") == attrsEnd)
{
// Use maya shape built-in attribute
plug = FindMayaPlug("receiveShadows");
if (!plug.isNull() && HasParameter(anodeEntry, "receive_shadows", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "receive_shadows", plug.asBool());
}
}
if (attrsSet.find("self_shadows") == attrsEnd)
{
plug = FindMayaPlug("self_shadows");
if (plug.isNull())
{
plug = FindMayaPlug("aiSelfShadows");
}
if (!plug.isNull() && HasParameter(anodeEntry, "self_shadows", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "self_shadows", plug.asBool());
}
}
if (attrsSet.find("opaque") == attrsEnd)
{
plug = FindMayaPlug("opaque");
if (plug.isNull())
{
plug = FindMayaPlug("aiOpaque");
}
if (!plug.isNull() && HasParameter(anodeEntry, "opaque", atNode, "constant BOOL"))
{
AiNodeSetBool(atNode, "opaque", plug.asBool());
}
}
if (attrsSet.find("visibility") == attrsEnd)
{
if (HasParameter(anodeEntry, "visibility", atNode, "constant BYTE"))
{
int visibility = AI_RAY_ALL;
// Use maya shape built-in attribute
plug = FindMayaPlug("castsShadows");
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_SHADOW;
}
// Use maya shape built-in attribute
plug = FindMayaPlug("primaryVisibility");
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_CAMERA;
}
// Use maya shape built-in attribute
plug = FindMayaPlug("visibleInReflections");
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_REFLECTED;
}
// Use maya shape built-in attribute
plug = FindMayaPlug("visibleInRefractions");
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_REFRACTED;
}
plug = FindMayaPlug("diffuse_visibility");
if (plug.isNull())
{
plug = FindMayaPlug("aiVisibleInDiffuse");
}
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_DIFFUSE;
}
plug = FindMayaPlug("glossy_visibility");
if (plug.isNull())
{
plug = FindMayaPlug("aiVisibleInGlossy");
}
if (!plug.isNull() && !plug.asBool())
{
visibility &= ~AI_RAY_GLOSSY;
}
AiNodeSetByte(atNode, "visibility", visibility & 0xFF);
}
}
if (attrsSet.find("sss_setname") == attrsEnd)
{
plug = FindMayaPlug("aiSssSetname");
if (!plug.isNull() && plug.asString().length() > 0)
{
if (HasParameter(anodeEntry, "sss_setname", atNode, "constant STRING"))
{
AiNodeSetStr(atNode, "sss_setname", plug.asString().asChar());
}
}
}
// Set surface shader
if (HasParameter(anodeEntry, "shader", atNode, "constant NODE"))
{
if (attrsSet.find("shader") == attrsEnd)
{
if (shadingEngine.object() != MObject::kNullObj)
{
AtNode *shader = ExportNode(shadingEngine.findPlug("message"));
if (shader != NULL)
{
const AtNodeEntry *entry = AiNodeGetNodeEntry(shader);
if (AiNodeEntryGetType(entry) != AI_NODE_SHADER)
{
MGlobal::displayWarning("[mtoaScriptedTranslators] Node generated from \"" + shadingEngine.name() +
"\" of type " + shadingEngine.typeName() + " for shader is not a shader but a " +
MString(AiNodeEntryGetTypeName(entry)));
}
else
{
AiNodeSetPtr(atNode, "shader", shader);
if (AiNodeLookUpUserParameter(atNode, "mtoa_shading_groups") == 0)
{
AiNodeDeclare(atNode, "mtoa_shading_groups", "constant ARRAY NODE");
AiNodeSetArray(atNode, "mtoa_shading_groups", AiArrayConvert(1, 1, AI_TYPE_NODE, &shader));
}
}
}
}
}
}
}
ExportLightLinking(atNode);
MPlug plug = FindMayaPlug("aiTraceSets");
if (!plug.isNull())
{
ExportTraceSets(atNode, plug);
}
// Call cleanup command on last export step
if (!IsMotionBlurEnabled() || !IsLocalMotionBlurEnabled() || int(step) >= (int(GetNumMotionSteps()) - 1))
{
if (HasParameter(anodeEntry, "disp_padding", atNode))
{
float padding = AiNodeGetFlt(atNode, "disp_padding");
AtPoint cmin = AiNodeGetPnt(atNode, "min");
AtPoint cmax = AiNodeGetPnt(atNode, "max");
cmin.x -= padding;
cmin.y -= padding;
cmin.z -= padding;
cmax.x += padding;
cmax.y += padding;
cmax.z += padding;
AiNodeSetPnt(atNode, "min", cmin.x, cmin.y, cmin.z);
AiNodeSetPnt(atNode, "max", cmax.x, cmax.y, cmax.z);
}
if (cleanupCmd != "")
{
command = cleanupCmd += "((\"" + m_dagPath.partialPathName() + "\", \"";
command += AiNodeGetName(atNode);
command += "\"), ";
if (!m_masterNode)
{
command += "None)";
}
else
{
command += "(\"" + GetMasterInstance().partialPathName() + "\", \"";
command += AiNodeGetName(m_masterNode);
command += "\"))";
}
status = MGlobal::executePythonCommand(command);
if (!status)
{
AiMsgError("[mtoa.scriptedTranslators] Failed to cleanup node \"%s\".", node.name().asChar());
}
}
}
}
virtual void ExportProcedural( AtNode *node )
{
// do basic node export
ExportMatrix( node, 0 );
AtNode *shader = arnoldShader();
if( shader )
{
AiNodeSetPtr( node, "shader", shader );
}
AiNodeSetInt( node, "visibility", ComputeVisibility() );
MPlug plug = FindMayaObjectPlug( "receiveShadows" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "receive_shadows", plug.asBool() );
}
plug = FindMayaObjectPlug( "aiSelfShadows" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "self_shadows", plug.asBool() );
}
plug = FindMayaObjectPlug( "aiOpaque" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "opaque", plug.asBool() );
}
// export any shading groups or displacement shaders which look like they
// may be connected to procedural parameters. this ensures that maya shaders
// the procedural will expect to find at rendertime will be exported to the
// ass file (they otherwise might not be if they're not assigned to any objects).
exportShadingInputs();
// now set the procedural-specific parameters
MFnDagNode fnDagNode( m_dagPath );
MBoundingBox bound = fnDagNode.boundingBox();
AiNodeSetPnt( node, "min", bound.min().x, bound.min().y, bound.min().z );
AiNodeSetPnt( node, "max", bound.max().x, bound.max().y, bound.max().z );
const char *dsoPath = getenv( "IECOREARNOLD_PROCEDURAL_PATH" );
AiNodeSetStr( node, "dso", dsoPath ? dsoPath : "ieProcedural.so" );
AiNodeDeclare( node, "className", "constant STRING" );
AiNodeDeclare( node, "classVersion", "constant INT" );
AiNodeDeclare( node, "parameterValues", "constant ARRAY STRING" );
// cast should be ok as we're registered to only work on procedural holders
IECoreMaya::ProceduralHolder *pHolder = static_cast<IECoreMaya::ProceduralHolder *>( fnDagNode.userNode() );
std::string className;
int classVersion;
IECore::ParameterisedProceduralPtr procedural = pHolder->getProcedural( &className, &classVersion );
AiNodeSetStr( node, "className", className.c_str() );
AiNodeSetInt( node, "classVersion", classVersion );
IECorePython::ScopedGILLock gilLock;
try
{
boost::python::object parser = IECoreMaya::PythonCmd::globalContext()["IECore"].attr( "ParameterParser" )();
boost::python::object serialised = parser.attr( "serialise" )( procedural->parameters() );
size_t numStrings = IECorePython::len( serialised );
AtArray *stringArray = AiArrayAllocate( numStrings, 1, AI_TYPE_STRING );
for( size_t i=0; i<numStrings; i++ )
{
std::string s = boost::python::extract<std::string>( serialised[i] );
// hack to workaround ass parsing errors
/// \todo Remove when we get the Arnold version that fixes this
for( size_t c = 0; c<s.size(); c++ )
{
if( s[c] == '#' )
{
s[c] = '@';
}
}
AiArraySetStr( stringArray, i, s.c_str() );
}
AiNodeSetArray( node, "parameterValues", stringArray );
}
catch( boost::python::error_already_set )
{
PyErr_Print();
}
}
/* static */
bool
px_vp20Utils::RenderBoundingBox(
const MBoundingBox& bounds,
const GfVec4f& color,
const MMatrix& worldViewMat,
const MMatrix& projectionMat)
{
static const GfVec3f cubeLineVertices[24] = {
// Vertical edges
GfVec3f(-0.5f, -0.5f, 0.5f),
GfVec3f(-0.5f, 0.5f, 0.5f),
GfVec3f(0.5f, -0.5f, 0.5f),
GfVec3f(0.5f, 0.5f, 0.5f),
GfVec3f(0.5f, -0.5f, -0.5f),
GfVec3f(0.5f, 0.5f, -0.5f),
GfVec3f(-0.5f, -0.5f, -0.5f),
GfVec3f(-0.5f, 0.5f, -0.5f),
// Top face edges
GfVec3f(-0.5f, 0.5f, 0.5f),
GfVec3f(0.5f, 0.5f, 0.5f),
GfVec3f(0.5f, 0.5f, 0.5f),
GfVec3f(0.5f, 0.5f, -0.5f),
GfVec3f(0.5f, 0.5f, -0.5f),
GfVec3f(-0.5f, 0.5f, -0.5f),
GfVec3f(-0.5f, 0.5f, -0.5f),
GfVec3f(-0.5f, 0.5f, 0.5f),
// Bottom face edges
GfVec3f(-0.5f, -0.5f, 0.5f),
GfVec3f(0.5f, -0.5f, 0.5f),
GfVec3f(0.5f, -0.5f, 0.5f),
GfVec3f(0.5f, -0.5f, -0.5f),
GfVec3f(0.5f, -0.5f, -0.5f),
GfVec3f(-0.5f, -0.5f, -0.5f),
GfVec3f(-0.5f, -0.5f, -0.5f),
GfVec3f(-0.5f, -0.5f, 0.5f),
};
static const std::string vertexShaderSource(
"#version 140\n"
"\n"
"in vec3 position;\n"
"uniform mat4 mvpMatrix;\n"
"\n"
"void main()\n"
"{\n"
" gl_Position = vec4(position, 1.0) * mvpMatrix;\n"
"}\n");
static const std::string fragmentShaderSource(
"#version 140\n"
"\n"
"uniform vec4 color;\n"
"out vec4 outColor;\n"
"\n"
"void main()\n"
"{\n"
" outColor = color;\n"
"}\n");
PxrMayaGLSLProgram renderBoundsProgram;
if (!renderBoundsProgram.CompileShader(GL_VERTEX_SHADER,
vertexShaderSource)) {
MGlobal::displayError("Failed to compile bounding box vertex shader");
return false;
}
if (!renderBoundsProgram.CompileShader(GL_FRAGMENT_SHADER,
fragmentShaderSource)) {
MGlobal::displayError("Failed to compile bounding box fragment shader");
return false;
}
if (!renderBoundsProgram.Link()) {
MGlobal::displayError("Failed to link bounding box render program");
return false;
}
if (!renderBoundsProgram.Validate()) {
MGlobal::displayError("Failed to validate bounding box render program");
return false;
}
GLuint renderBoundsProgramId = renderBoundsProgram.GetProgramId();
glUseProgram(renderBoundsProgramId);
// Populate an array buffer with the cube line vertices.
GLuint cubeLinesVBO;
glGenBuffers(1, &cubeLinesVBO);
glBindBuffer(GL_ARRAY_BUFFER, cubeLinesVBO);
glBufferData(GL_ARRAY_BUFFER,
sizeof(cubeLineVertices),
cubeLineVertices,
GL_STATIC_DRAW);
// Create a transformation matrix from the bounding box's center and
// dimensions.
MTransformationMatrix bboxTransformMatrix = MTransformationMatrix::identity;
bboxTransformMatrix.setTranslation(bounds.center(), MSpace::kTransform);
const double scales[3] = { bounds.width(), bounds.height(), bounds.depth() };
bboxTransformMatrix.setScale(scales, MSpace::kTransform);
const MMatrix mvpMatrix =
bboxTransformMatrix.asMatrix() * worldViewMat * projectionMat;
GLfloat mvpMatrixArray[4][4];
mvpMatrix.get(mvpMatrixArray);
// Populate the shader variables.
GLuint mvpMatrixLocation = glGetUniformLocation(renderBoundsProgramId, "mvpMatrix");
glUniformMatrix4fv(mvpMatrixLocation, 1, GL_TRUE, &mvpMatrixArray[0][0]);
GLuint colorLocation = glGetUniformLocation(renderBoundsProgramId, "color");
glUniform4fv(colorLocation, 1, color.data());
// Enable the position attribute and draw.
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glDrawArrays(GL_LINES, 0, sizeof(cubeLineVertices));
glDisableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &cubeLinesVBO);
glUseProgram(0);
return true;
}
void
simpleFluidEmitter::volumeFluidEmitter(
MFnFluid& fluid,
const MMatrix& fluidWorldMatrix,
int plugIndex,
MDataBlock& block,
double dt,
double conversion,
double dropoff
)
//==============================================================================
//
// Method:
//
// simpleFluidEmitter::volumeFluidEmitter
//
// Description:
//
// Emits fluid from points distributed over the surface of the
// emitter's owner object.
//
// Parameters:
//
// fluid: fluid into which we are emitting
// fluidWorldMatrix: object->world matrix for the fluid
// plugIndex: identifies which fluid connected to the emitter
// we are emitting into
// block: datablock for the emitter, to retrieve attribute
// values
// dt: time delta for this frame
// conversion: mapping from UI emission rates to internal units
// dropoff: specifies how much emission rate drops off as
// we move away from the local y-axis of the
// volume emitter shape.
//
//==============================================================================
{
// get emitter position and relevant matrices
//
MPoint emitterPos = getWorldPosition();
MMatrix emitterWorldMatrix = getWorldMatrix();
MMatrix fluidInverseWorldMatrix = fluidWorldMatrix.inverse();
// get emission rates for density, fuel, heat, and emission color
//
double densityEmit = fluidDensityEmission( block );
double fuelEmit = fluidFuelEmission( block );
double heatEmit = fluidHeatEmission( block );
bool doEmitColor = fluidEmitColor( block );
MColor emitColor = fluidColor( block );
// rate modulation based on frame time, user value conversion factor, and
// standard emitter "rate" value (not actually exposed in most fluid
// emitters, but there anyway).
//
double theRate = getRate(block) * dt * conversion;
// find the voxels that intersect the bounding box of the volume
// primitive associated with the emitter
//
MBoundingBox bbox;
if( !volumePrimitiveBoundingBox( bbox ) )
{
// shouldn't happen
//
return;
}
// transform volume primitive into fluid space
//
bbox.transformUsing( emitterWorldMatrix );
bbox.transformUsing( fluidInverseWorldMatrix );
MPoint lowCorner = bbox.min();
MPoint highCorner = bbox.max();
// see if autoresize to emitter is on, so we can resize before emitting
//
// unfortunately, we need the fluidShape itself in order to check
// we'll just look at the first connected fluid,
// walking the multi is left as an excercise for the reader
// similarly, determining whether there is start frame emission
// and resizing at the start frame, or not, is left as an excercise
// and finally, emission with autoResize will need to include the dynamicOffset
//
MObject thisObj = thisMObject();
MFnDependencyNode nodeFn(thisObj);
bool autoResize = false;
bool resizeToEmitter = false;
MPlug fnPlug = nodeFn.findPlug("emissionFunction");
if(fnPlug.isConnected()) {
MPlugArray connections;
fnPlug.connectedTo(connections, false, true);
if (connections.length() > 0) {
MObject sourceNode = connections[0].node();
if (sourceNode.hasFn(MFn::kFluid)) {
MFnFluid fluidFn(sourceNode);
autoResize = fluidFn.isAutoResize();
resizeToEmitter = fluidFn.isResizeToEmitter();
if(autoResize && resizeToEmitter) {
fluidFn.expandToInclude(lowCorner, highCorner);
}
}
}
}
if(autoResize && resizeToEmitter) {
fluid.updateGrid ();
}
// get voxel dimensions and sizes (object space)
//
double size[3];
unsigned int res[3];
fluid.getDimensions( size[0], size[1], size[2] );
fluid.getResolution( res[0], res[1], res[2] );
// voxel sizes
double dx = size[0] / res[0];
double dy = size[1] / res[1];
double dz = size[2] / res[2];
// voxel centers
double Ox = -size[0]/2;
double Oy = -size[1]/2;
double Oz = -size[2]/2;
// get fluid voxel coord range of bounding box
//
int3 lowCoords;
int3 highCoords;
fluid.toGridIndex( lowCorner, lowCoords );
fluid.toGridIndex( highCorner, highCoords );
int i;
for ( i = 0; i < 3; i++ )
{
if ( lowCoords[i] < 0 ) {
lowCoords[i] = 0;
} else if ( lowCoords[i] > ((int)res[i])-1 ) {
lowCoords[i] = ((int)res[i])-1;
}
if ( highCoords[i] < 0 ) {
highCoords[i] = 0;
} else if ( highCoords[i] > ((int)res[i])-1 ) {
highCoords[i] = ((int)res[i])-1;
}
}
// figure out the emitter size relative to the voxel size, and compute
// a per-voxel sampling rate that uses 1 sample/voxel for emitters that
// are >= 2 voxels big in all dimensions. For smaller emitters, use up
// to 8 samples per voxel.
//
double emitterVoxelSize[3];
emitterVoxelSize[0] = (highCorner[0]-lowCorner[0])/dx;
emitterVoxelSize[1] = (highCorner[1]-lowCorner[1])/dy;
emitterVoxelSize[2] = (highCorner[2]-lowCorner[2])/dz;
double minVoxelSize = MIN(emitterVoxelSize[0],MIN(emitterVoxelSize[1],emitterVoxelSize[2]));
if( minVoxelSize < 1.0 )
{
minVoxelSize = 1.0;
}
int maxSamples = 8;
int numSamples = (int)(8.0/(minVoxelSize*minVoxelSize*minVoxelSize) + 0.5);
if( numSamples < 1 ) numSamples = 1;
if( numSamples > maxSamples ) numSamples = maxSamples;
// non-jittered, just use one sample in the voxel center. Should replace
// with uniform sampling pattern.
//
bool jitter = fluidJitter(block);
if( !jitter )
{
numSamples = 1;
}
// for each voxel that could potentially intersect the volume emitter
// primitive, take some samples in the voxel. For those inside the
// volume, compute their dropoff relative to the primitive's local y-axis,
// and emit an appropriate amount into the voxel.
//
for( i = lowCoords[0]; i <= highCoords[0]; i++ )
{
double x = Ox + (i+0.5)*dx;
for( int j = lowCoords[1]; j < highCoords[1]; j++ )
{
double y = Oy + (j+0.5)*dy;
for( int k = lowCoords[2]; k < highCoords[2]; k++ )
{
double z = Oz + (k+0.5)*dz;
for ( int si = 0; si < numSamples; si++) {
// compute voxel sample point (object space)
//
double rx, ry, rz;
if(jitter) {
rx = x + dx*(randgen() - 0.5);
ry = y + dy*(randgen() - 0.5);
rz = z + dz*(randgen() - 0.5);
} else {
rx = x;
ry = y;
rz = z;
}
// to world space
MPoint pt( rx, ry, rz );
pt *= fluidWorldMatrix;
// test to see if point is inside volume primitive
//
if( volumePrimitivePointInside( pt, emitterWorldMatrix ) )
{
// compute dropoff
//
double dist = pt.distanceTo( emitterPos );
double distDrop = dropoff * (dist*dist);
double newVal = (theRate * exp( -distDrop )) / (double)numSamples;
// emit into arrays
//
if( newVal != 0.0 )
{
fluid.emitIntoArrays( (float) newVal, i, j, k, (float)densityEmit, (float)heatEmit, (float)fuelEmit, doEmitColor, emitColor );
}
}
}
}
}
}
}
virtual void ExportProcedural( AtNode *node )
{
// do basic node export
ExportMatrix( node, 0 );
// AiNodeSetPtr( node, "shader", arnoldShader(node) );
AiNodeSetInt( node, "visibility", ComputeVisibility() );
MPlug plug = FindMayaObjectPlug( "receiveShadows" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "receive_shadows", plug.asBool() );
}
plug = FindMayaObjectPlug( "aiSelfShadows" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "self_shadows", plug.asBool() );
}
plug = FindMayaObjectPlug( "aiOpaque" );
if( !plug.isNull() )
{
AiNodeSetBool( node, "opaque", plug.asBool() );
}
// now set the procedural-specific parameters
AiNodeSetBool( node, "load_at_init", true ); // just for now so that it can load the shaders at the right time
MFnDagNode fnDagNode( m_dagPath );
MBoundingBox bound = fnDagNode.boundingBox();
AiNodeSetPnt( node, "min", bound.min().x-m_dispPadding, bound.min().y-m_dispPadding, bound.min().z-m_dispPadding );
AiNodeSetPnt( node, "max", bound.max().x+m_dispPadding, bound.max().y, bound.max().z+m_dispPadding );
const char *dsoPath = getenv( "ALEMBIC_ARNOLD_PROCEDURAL_PATH" );
AiNodeSetStr( node, "dso", dsoPath ? dsoPath : "bb_AlembicArnoldProcedural.so" );
// Set the parameters for the procedural
//abcFile path
MString abcFile = fnDagNode.findPlug("cacheFileName").asString().expandEnvironmentVariablesAndTilde();
//object path
MString objectPath = fnDagNode.findPlug("cacheGeomPath").asString();
//object pattern
MString objectPattern = "*";
plug = FindMayaObjectPlug( "objectPattern" );
if (!plug.isNull() )
{
if (plug.asString() != "")
{
objectPattern = plug.asString();
}
}
//object pattern
MString excludePattern = "";
plug = FindMayaObjectPlug( "excludePattern" );
if (!plug.isNull() )
{
if (plug.asString() != "")
{
excludePattern = plug.asString();
}
}
float shutterOpen = 0.0;
plug = FindMayaObjectPlug( "shutterOpen" );
if (!plug.isNull() )
{
shutterOpen = plug.asFloat();
}
float shutterClose = 0.0;
plug = FindMayaObjectPlug( "shutterClose" );
if (!plug.isNull() )
{
shutterClose = plug.asFloat();
}
float timeOffset = 0.0;
plug = FindMayaObjectPlug( "timeOffset" );
if (!plug.isNull() )
{
timeOffset = plug.asFloat();
}
int subDIterations = 0;
plug = FindMayaObjectPlug( "ai_subDIterations" );
if (!plug.isNull() )
{
subDIterations = plug.asInt();
}
MString nameprefix = "";
plug = FindMayaObjectPlug( "namePrefix" );
if (!plug.isNull() )
{
nameprefix = plug.asString();
}
// bool exportFaceIds = fnDagNode.findPlug("exportFaceIds").asBool();
bool makeInstance = true; // always on for now
plug = FindMayaObjectPlug( "makeInstance" );
if (!plug.isNull() )
{
makeInstance = plug.asBool();
}
bool flipv = false;
plug = FindMayaObjectPlug( "flipv" );
if (!plug.isNull() )
{
flipv = plug.asBool();
}
bool invertNormals = false;
plug = FindMayaObjectPlug( "invertNormals" );
if (!plug.isNull() )
{
invertNormals = plug.asBool();
}
short i_subDUVSmoothing = 1;
plug = FindMayaObjectPlug( "ai_subDUVSmoothing" );
if (!plug.isNull() )
{
i_subDUVSmoothing = plug.asShort();
}
MString subDUVSmoothing;
switch (i_subDUVSmoothing)
{
case 0:
subDUVSmoothing = "pin_corners";
break;
case 1:
subDUVSmoothing = "pin_borders";
break;
case 2:
subDUVSmoothing = "linear";
break;
case 3:
subDUVSmoothing = "smooth";
break;
default :
subDUVSmoothing = "pin_corners";
break;
}
MTime curTime = MAnimControl::currentTime();
// fnDagNode.findPlug("time").getValue( frame );
// MTime frameOffset;
// fnDagNode.findPlug("timeOffset").getValue( frameOffset );
float time = curTime.as(MTime::kFilm)+timeOffset;
MString argsString;
if (objectPath != "|"){
argsString += "-objectpath ";
// convert "|" to "/"
argsString += MString(replace_all(objectPath,"|","/").c_str());
}
if (objectPattern != "*"){
argsString += "-pattern ";
argsString += objectPattern;
}
if (excludePattern != ""){
argsString += "-excludepattern ";
argsString += excludePattern;
}
if (shutterOpen != 0.0){
argsString += " -shutteropen ";
argsString += shutterOpen;
}
if (shutterClose != 0.0){
argsString += " -shutterclose ";
argsString += shutterClose;
}
if (subDIterations != 0){
argsString += " -subditerations ";
argsString += subDIterations;
argsString += " -subduvsmoothing ";
argsString += subDUVSmoothing;
}
if (makeInstance){
argsString += " -makeinstance ";
}
if (nameprefix != ""){
argsString += " -nameprefix ";
argsString += nameprefix;
}
if (flipv){
argsString += " -flipv ";
}
if (invertNormals){
argsString += " -invertNormals ";
}
argsString += " -filename ";
argsString += abcFile;
argsString += " -frame ";
argsString += time;
if (m_displaced){
argsString += " -disp_map ";
argsString += AiNodeGetName(m_dispNode);
}
AiNodeSetStr(node, "data", argsString.asChar());
ExportUserAttrs(node);
// Export light linking per instance
ExportLightLinking(node);
}
// write the frame ranges and statistic string on the root
// Also call the post callbacks
void AbcWriteJob::postCallback(double iFrame)
{
std::string statsStr = "";
addToString(statsStr, "SubDStaticNum", mStats.mSubDStaticNum);
addToString(statsStr, "SubDAnimNum", mStats.mSubDAnimNum);
addToString(statsStr, "SubDStaticCVs", mStats.mSubDStaticCVs);
addToString(statsStr, "SubDAnimCVs", mStats.mSubDAnimCVs);
addToString(statsStr, "SubDStaticFaces", mStats.mSubDStaticFaces);
addToString(statsStr, "SubDAnimFaces", mStats.mSubDAnimFaces);
addToString(statsStr, "PolyStaticNum", mStats.mPolyStaticNum);
addToString(statsStr, "PolyAnimNum", mStats.mPolyAnimNum);
addToString(statsStr, "PolyStaticCVs", mStats.mPolyStaticCVs);
addToString(statsStr, "PolyAnimCVs", mStats.mPolyAnimCVs);
addToString(statsStr, "PolyStaticFaces", mStats.mPolyStaticFaces);
addToString(statsStr, "PolyAnimFaces", mStats.mPolyAnimFaces);
addToString(statsStr, "CurveStaticNum", mStats.mCurveStaticNum);
addToString(statsStr, "CurveStaticCurves", mStats.mCurveStaticCurves);
addToString(statsStr, "CurveAnimNum", mStats.mCurveAnimNum);
addToString(statsStr, "CurveAnimCurves", mStats.mCurveAnimCurves);
addToString(statsStr, "CurveStaticCVs", mStats.mCurveStaticCVs);
addToString(statsStr, "CurveAnimCVs", mStats.mCurveAnimCVs);
addToString(statsStr, "PointStaticNum", mStats.mPointStaticNum);
addToString(statsStr, "PointAnimNum", mStats.mPointAnimNum);
addToString(statsStr, "PointStaticCVs", mStats.mPointStaticCVs);
addToString(statsStr, "PointAnimCVs", mStats.mPointAnimCVs);
addToString(statsStr, "NurbsStaticNum", mStats.mNurbsStaticNum);
addToString(statsStr, "NurbsAnimNum", mStats.mNurbsAnimNum);
addToString(statsStr, "NurbsStaticCVs", mStats.mNurbsStaticCVs);
addToString(statsStr, "NurbsAnimCVs", mStats.mNurbsAnimCVs);
addToString(statsStr, "TransStaticNum", mStats.mTransStaticNum);
addToString(statsStr, "TransAnimNum", mStats.mTransAnimNum);
addToString(statsStr, "LocatorStaticNum", mStats.mLocatorStaticNum);
addToString(statsStr, "LocatorAnimNum", mStats.mLocatorAnimNum);
addToString(statsStr, "CameraStaticNum", mStats.mCameraStaticNum);
addToString(statsStr, "CameraAnimNum", mStats.mCameraAnimNum);
if (statsStr.length() > 0)
{
Alembic::Abc::OStringProperty stats(mRoot.getTop().getProperties(),
"statistics");
stats.set(statsStr);
}
if (mTransTimeIndex != 0)
{
MString propName;
propName += static_cast<int>(mTransTimeIndex);
propName += ".samples";
Alembic::Abc::OUInt32Property samp(mRoot.getTop().getProperties(),
propName.asChar());
samp.set(mTransSamples);
}
if (mShapeTimeIndex != 0 && mShapeTimeIndex != mTransTimeIndex)
{
MString propName;
propName += static_cast<int>(mShapeTimeIndex);
propName += ".samples";
Alembic::Abc::OUInt32Property samp(mRoot.getTop().getProperties(),
propName.asChar());
samp.set(mShapeSamples);
}
MBoundingBox bbox;
if (mArgs.melPostCallback.find("#BOUNDS#") != std::string::npos ||
mArgs.pythonPostCallback.find("#BOUNDS#") != std::string::npos ||
mArgs.melPostCallback.find("#BOUNDSARRAY#") != std::string::npos ||
mArgs.pythonPostCallback.find("#BOUNDSARRAY#") != std::string::npos)
{
util::ShapeSet::const_iterator it = mArgs.dagPaths.begin();
const util::ShapeSet::const_iterator end = mArgs.dagPaths.end();
for (; it != end; it ++)
{
mCurDag = *it;
MMatrix eMInvMat;
if (mArgs.worldSpace)
{
eMInvMat.setToIdentity();
}
else
{
eMInvMat = mCurDag.exclusiveMatrixInverse();
}
bbox.expand(getBoundingBox(iFrame, eMInvMat));
}
}
processCallback(mArgs.melPostCallback, true, iFrame, bbox);
processCallback(mArgs.pythonPostCallback, false, iFrame, bbox);
}
MBoundingBox AbcWriteJob::getBoundingBox(double iFrame, const MMatrix & eMInvMat)
{
MStatus status;
MBoundingBox curBBox;
if (iFrame == mFirstFrame)
{
// Set up bbox shape map in the first frame.
// If we have a lot of transforms and shapes, we don't need to
// iterate them for each frame.
MItDag dagIter;
for (dagIter.reset(mCurDag); !dagIter.isDone(); dagIter.next())
{
MObject object = dagIter.currentItem();
MDagPath path;
dagIter.getPath(path);
// short-circuit if the selection flag is on but this node is not in the
// active selection
// MGlobal::isSelected(ob) doesn't work, because DG node and DAG node is
// not the same even if they refer to the same MObject
if (mArgs.useSelectionList && !mSList.hasItem(path))
{
dagIter.prune();
continue;
}
MFnDagNode dagNode(path, &status);
if (status == MS::kSuccess)
{
// check for riCurves flag for flattening all curve object to
// one curve group
MPlug riCurvesPlug = dagNode.findPlug("riCurves", &status);
if ( status == MS::kSuccess && riCurvesPlug.asBool() == true)
{
MBoundingBox box = dagNode.boundingBox();
box.transformUsing(path.exclusiveMatrix()*eMInvMat);
curBBox.expand(box);
// Prune this curve group
dagIter.prune();
// Save children paths
std::map< MDagPath, util::ShapeSet, util::cmpDag >::iterator iter =
mBBoxShapeMap.insert(std::make_pair(mCurDag, util::ShapeSet())).first;
if (iter != mBBoxShapeMap.end())
(*iter).second.insert(path);
}
else if (object.hasFn(MFn::kParticle)
|| object.hasFn(MFn::kMesh)
|| object.hasFn(MFn::kNurbsCurve)
|| object.hasFn(MFn::kNurbsSurface) )
{
if (util::isIntermediate(object))
continue;
MBoundingBox box = dagNode.boundingBox();
box.transformUsing(path.exclusiveMatrix()*eMInvMat);
curBBox.expand(box);
// Save children paths
std::map< MDagPath, util::ShapeSet, util::cmpDag >::iterator iter =
mBBoxShapeMap.insert(std::make_pair(mCurDag, util::ShapeSet())).first;
if (iter != mBBoxShapeMap.end())
(*iter).second.insert(path);
}
}
}
}
else
{
// We have already find out all the shapes for the dag path.
std::map< MDagPath, util::ShapeSet, util::cmpDag >::iterator iter =
mBBoxShapeMap.find(mCurDag);
if (iter != mBBoxShapeMap.end())
{
// Iterate through the saved paths to calculate the box.
util::ShapeSet& paths = (*iter).second;
for (util::ShapeSet::iterator pathIter = paths.begin();
pathIter != paths.end(); pathIter++)
{
MFnDagNode dagNode(*pathIter, &status);
if (status == MS::kSuccess)
{
MBoundingBox box = dagNode.boundingBox();
box.transformUsing((*pathIter).exclusiveMatrix()*eMInvMat);
curBBox.expand(box);
}
}
}
}
return curBBox;
}