// general cortex render function, takes a gu_detail and uses the NodePassData attribute
// to call the required render method
void GR_Cortex::render( GU_Detail *gdp, const IECoreGL::State *displayState )
{
// gl scene from a parameterised procedural
const GA_ROAttributeRef attrRef = gdp->findAttribute( GA_ATTRIB_DETAIL, GA_SCOPE_PRIVATE, "IECoreHoudiniNodePassData" );
if ( attrRef.isInvalid() )
{
return;
}
const GA_Attribute *attr = attrRef.getAttribute();
const GA_AIFBlindData *blindData = attr->getAIFBlindData();
const NodePassData passData = blindData->getValue<NodePassData>( attr, 0 );
switch( passData.type() )
{
case IECoreHoudini::NodePassData::CORTEX_OPHOLDER :
{
SOP_OpHolder *sop = dynamic_cast<SOP_OpHolder*>( const_cast<OP_Node*>( passData.nodePtr() ) );
if ( !sop )
{
return;
}
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( sop->getParameterised() );
if ( !op )
{
return;
}
const IECore::Parameter *result_parameter = op->resultParameter();
const IECore::Object *result_object = result_parameter->getValue();
renderObject( result_object, displayState );
break;
}
case IECoreHoudini::NodePassData::CORTEX_PROCEDURALHOLDER :
{
SOP_ProceduralHolder *sop = dynamic_cast<SOP_ProceduralHolder*>( const_cast<OP_Node*>( passData.nodePtr() ) );
if ( !sop )
{
return;
}
IECoreGL::ConstScenePtr scene = sop->scene();
if ( !scene )
{
return;
}
scene->render( const_cast<IECoreGL::State *>( displayState ) );
break;
}
default :
{
break;
}
}
}
void DrawableHolderUI::draw( const MDrawRequest &request, M3dView &view ) const
{
MDrawData drawData = request.drawData();
DrawableHolder *drawableHolder = (DrawableHolder *)drawData.geometry();
assert( drawableHolder );
IECoreGL::ConstScenePtr s = drawableHolder->scene();
if( !s )
{
return;
}
view.beginGL();
// maya can sometimes leave an error from it's own code,
// and we don't want that to confuse us in our drawing code.
while( glGetError()!=GL_NO_ERROR )
{
}
// if we're being drawn as part of a selection operation we need
// to make sure there's a name on the name stack, as the IECoreGL::NameStateComponent
// expects to be able to load a name into it (it fails with an invalid operation if
// there's no name slot to load into).
if( view.selectMode() )
{
view.pushName( 0 );
}
try
{
// do the main render
s->render( m_displayStyle.baseState( request.displayStyle() ) );
// do a wireframe render over the top if we're selected and we just did a solid
// draw.
bool selected = request.displayStatus()==M3dView::kActive || request.displayStatus()==M3dView::kLead;
bool solid = request.displayStyle()==M3dView::kFlatShaded || request.displayStyle()==M3dView::kGouraudShaded;
if( selected && solid )
{
s->render( m_displayStyle.baseState( M3dView::kWireFrame ) );
}
}
catch( std::exception &e )
{
IECore::msg( IECore::Msg::Error, "DrawableHolderUI::draw", e.what() );
}
view.endGL();
}
bool DrawableHolderUI::select( MSelectInfo &selectInfo, MSelectionList &selectionList, MPointArray &worldSpaceSelectPts ) const
{
MStatus s;
// early out if we're not selectable. we always allow components to be selected if we're highlighted,
// but we don't allow ourselves to be selected as a whole unless meshes are in the selection mask.
// it's not ideal that we act like a mesh, but it's at least consistent with the drawing mask we use.
if( selectInfo.displayStatus() != M3dView::kHilite )
{
MSelectionMask meshMask( MSelectionMask::kSelectMeshes );
if( !selectInfo.selectable( meshMask ) )
{
return false;
}
}
// early out if we have no scene to draw
DrawableHolder *drawableHolder = static_cast<DrawableHolder *>( surfaceShape() );
IECoreGL::ConstScenePtr scene = drawableHolder->scene();
if( !scene )
{
return false;
}
// we want to perform the selection using an IECoreGL::Selector, so we
// can avoid the performance penalty associated with using GL_SELECT mode.
// that means we don't really want to call view.beginSelect(), but we have to
// call it just to get the projection matrix for our own selection, because as far
// as i can tell, there is no other way of getting it reliably.
M3dView view = selectInfo.view();
view.beginSelect();
Imath::M44d projectionMatrix;
glGetDoublev( GL_PROJECTION_MATRIX, projectionMatrix.getValue() );
view.endSelect();
view.beginGL();
glMatrixMode( GL_PROJECTION );
glLoadMatrixd( projectionMatrix.getValue() );
IECoreGL::Selector::Mode selectionMode = IECoreGL::Selector::IDRender;
if( selectInfo.displayStatus() == M3dView::kHilite && !selectInfo.singleSelection() )
{
selectionMode = IECoreGL::Selector::OcclusionQuery;
}
std::vector<IECoreGL::HitRecord> hits;
{
IECoreGL::Selector selector( Imath::Box2f( Imath::V2f( 0 ), Imath::V2f( 1 ) ), selectionMode, hits );
IECoreGL::State::bindBaseState();
selector.baseState()->bind();
scene->render( selector.baseState() );
}
view.endGL();
if( !hits.size() )
{
return false;
}
// find the depth of the closest hit:
MIntArray componentIndices;
float depthMin = std::numeric_limits<float>::max();
for( int i=0, e = hits.size(); i < e; i++ )
{
if( hits[i].depthMin < depthMin )
{
depthMin = hits[i].depthMin;
}
}
// figure out the world space location of the closest hit
MDagPath camera;
view.getCamera( camera );
MFnCamera fnCamera( camera.node() );
float near = fnCamera.nearClippingPlane();
float far = fnCamera.farClippingPlane();
float z = -1;
if( fnCamera.isOrtho() )
{
z = Imath::lerp( near, far, depthMin );
}
else
{
// perspective camera - depth isn't linear so linearise to get z
float a = far / ( far - near );
float b = far * near / ( near - far );
z = b / ( depthMin - a );
}
MPoint localRayOrigin;
MVector localRayDirection;
selectInfo.getLocalRay( localRayOrigin, localRayDirection );
MMatrix localToCamera = selectInfo.selectPath().inclusiveMatrix() * camera.inclusiveMatrix().inverse();
MPoint cameraRayOrigin = localRayOrigin * localToCamera;
MVector cameraRayDirection = localRayDirection * localToCamera;
MPoint cameraIntersectionPoint = cameraRayOrigin + cameraRayDirection * ( -( z - near ) / cameraRayDirection.z );
MPoint worldIntersectionPoint = cameraIntersectionPoint * camera.inclusiveMatrix();
MSelectionList item;
item.add( selectInfo.selectPath() );
selectInfo.addSelection(
item, worldIntersectionPoint,
selectionList, worldSpaceSelectPts,
MSelectionMask::kSelectMeshes,
false
);
return true;
}
bool ProceduralHolderUI::select( MSelectInfo &selectInfo, MSelectionList &selectionList, MPointArray &worldSpaceSelectPts ) const
{
MStatus s;
// early out if we're not selectable. we always allow components to be selected if we're highlighted,
// but we don't allow ourselves to be selected as a whole unless meshes are in the selection mask.
// it's not ideal that we act like a mesh, but it's at least consistent with the drawing mask we use.
if( selectInfo.displayStatus() != M3dView::kHilite )
{
MSelectionMask meshMask( MSelectionMask::kSelectMeshes );
if( !selectInfo.selectable( meshMask ) )
{
return false;
}
}
// early out if we have no scene to draw
ProceduralHolder *proceduralHolder = static_cast<ProceduralHolder *>( surfaceShape() );
IECoreGL::ConstScenePtr scene = proceduralHolder->scene();
if( !scene )
{
return false;
}
// we want to perform the selection using an IECoreGL::Selector, so we
// can avoid the performance penalty associated with using GL_SELECT mode.
// that means we don't really want to call view.beginSelect(), but we have to
// call it just to get the projection matrix for our own selection, because as far
// as i can tell, there is no other way of getting it reliably.
M3dView view = selectInfo.view();
view.beginSelect();
Imath::M44d projectionMatrix;
glGetDoublev( GL_PROJECTION_MATRIX, projectionMatrix.getValue() );
view.endSelect();
view.beginGL();
glMatrixMode( GL_PROJECTION );
glLoadMatrixd( projectionMatrix.getValue() );
IECoreGL::Selector::Mode selectionMode = IECoreGL::Selector::IDRender;
if( selectInfo.displayStatus() == M3dView::kHilite && !selectInfo.singleSelection() )
{
selectionMode = IECoreGL::Selector::OcclusionQuery;
}
std::vector<IECoreGL::HitRecord> hits;
{
IECoreGL::Selector selector( Imath::Box2f( Imath::V2f( 0 ), Imath::V2f( 1 ) ), selectionMode, hits );
IECoreGL::State::bindBaseState();
selector.baseState()->bind();
scene->render( selector.baseState() );
if( selectInfo.displayStatus() != M3dView::kHilite )
{
// we're not in component selection mode. we'd like to be able to select the procedural
// object using the bounding box so we draw it too.
MPlug pDrawBound( proceduralHolder->thisMObject(), ProceduralHolder::aDrawBound );
bool drawBound = true;
pDrawBound.getValue( drawBound );
if( drawBound )
{
IECoreGL::BoxPrimitive::renderWireframe( IECore::convert<Imath::Box3f>( proceduralHolder->boundingBox() ) );
}
}
}
view.endGL();
if( !hits.size() )
{
return false;
}
// iterate over the hits, converting them into components and also finding
// the closest one.
MIntArray componentIndices;
float depthMin = std::numeric_limits<float>::max();
int depthMinIndex = -1;
for( int i=0, e = hits.size(); i < e; i++ )
{
if( hits[i].depthMin < depthMin )
{
depthMin = hits[i].depthMin;
depthMinIndex = componentIndices.length();
}
ProceduralHolder::ComponentsMap::const_iterator compIt = proceduralHolder->m_componentsMap.find( hits[i].name.value() );
assert( compIt != proceduralHolder->m_componentsMap.end() );
componentIndices.append( compIt->second.first );
}
assert( depthMinIndex >= 0 );
// figure out the world space location of the closest hit
MDagPath camera;
view.getCamera( camera );
MFnCamera fnCamera( camera.node() );
float near = fnCamera.nearClippingPlane();
float far = fnCamera.farClippingPlane();
float z = -1;
if( fnCamera.isOrtho() )
{
z = Imath::lerp( near, far, depthMin );
}
else
{
// perspective camera - depth isn't linear so linearise to get z
float a = far / ( far - near );
float b = far * near / ( near - far );
z = b / ( depthMin - a );
}
MPoint localRayOrigin;
MVector localRayDirection;
selectInfo.getLocalRay( localRayOrigin, localRayDirection );
MMatrix localToCamera = selectInfo.selectPath().inclusiveMatrix() * camera.inclusiveMatrix().inverse();
MPoint cameraRayOrigin = localRayOrigin * localToCamera;
MVector cameraRayDirection = localRayDirection * localToCamera;
MPoint cameraIntersectionPoint = cameraRayOrigin + cameraRayDirection * ( -( z - near ) / cameraRayDirection.z );
MPoint worldIntersectionPoint = cameraIntersectionPoint * camera.inclusiveMatrix();
// turn the processed hits into appropriate changes to the current selection
if( selectInfo.displayStatus() == M3dView::kHilite )
{
// selecting components
MFnSingleIndexedComponent fnComponent;
MObject component = fnComponent.create( MFn::kMeshPolygonComponent, &s ); assert( s );
if( selectInfo.singleSelection() )
{
fnComponent.addElement( componentIndices[depthMinIndex] );
}
else
{
fnComponent.addElements( componentIndices );
}
MSelectionList items;
items.add( selectInfo.multiPath(), component );
selectInfo.addSelection(
items, worldIntersectionPoint,
selectionList, worldSpaceSelectPts,
MSelectionMask::kSelectMeshFaces,
true
);
}
else
{
// selecting objects
MSelectionList item;
item.add( selectInfo.selectPath() );
selectInfo.addSelection(
item, worldIntersectionPoint,
selectionList, worldSpaceSelectPts,
MSelectionMask::kSelectMeshes,
false
);
}
return true;
}
void ProceduralHolderUI::draw( const MDrawRequest &request, M3dView &view ) const
{
MStatus s;
MDrawData drawData = request.drawData();
ProceduralHolder *proceduralHolder = (ProceduralHolder *)drawData.geometry();
assert( proceduralHolder );
view.beginGL();
LightingState lightingState;
bool restoreLightState = cleanupLights( request, view, &lightingState );
// maya can sometimes leave an error from it's own code,
// and we don't want that to confuse us in our drawing code.
while( glGetError()!=GL_NO_ERROR )
{
}
try
{
// draw the bound if asked
if( request.token()==BoundDrawMode )
{
IECoreGL::BoxPrimitive::renderWireframe( IECore::convert<Imath::Box3f>( proceduralHolder->boundingBox() ) );
}
// draw the scene if asked
if( request.token()==SceneDrawMode )
{
resetHilites();
IECoreGL::ConstScenePtr scene = proceduralHolder->scene();
if( scene )
{
IECoreGL::State *displayState = m_displayStyle.baseState( (M3dView::DisplayStyle)request.displayStyle() );
if ( request.component() != MObject::kNullObj )
{
MDoubleArray col;
s = MGlobal::executeCommand( "colorIndex -q 21", col );
assert( s );
IECoreGL::WireframeColorStateComponentPtr hilite = new IECoreGL::WireframeColorStateComponent( Imath::Color4f( col[0], col[1], col[2], 1.0f ) );
MFnSingleIndexedComponent fnComp( request.component(), &s );
assert( s );
int len = fnComp.elementCount( &s );
assert( s );
for ( int j = 0; j < len; j++ )
{
int compId = fnComp.element(j);
assert( proceduralHolder->m_componentToGroupMap.find( compId ) != proceduralHolder->m_componentToGroupMap.end() );
hiliteGroups(
proceduralHolder->m_componentToGroupMap[compId],
hilite,
const_cast<IECoreGL::WireframeColorStateComponent *>( displayState->get< IECoreGL::WireframeColorStateComponent >() )
);
}
}
scene->render( displayState );
}
}
}
catch( const IECoreGL::Exception &e )
{
// much better to catch and report this than to let the application die
IECore::msg( IECore::Msg::Error, "ProceduralHolderUI::draw", boost::format( "IECoreGL Exception : %s" ) % e.what() );
}
if( restoreLightState )
{
restoreLights( &lightingState );
}
view.endGL();
}
bool SceneShapeUI::select( MSelectInfo &selectInfo, MSelectionList &selectionList, MPointArray &worldSpaceSelectPts ) const
{
MStatus s;
// early out if we're not selectable. we always allow components to be selected if we're highlighted,
// but we don't allow ourselves to be selected as a whole unless meshes are in the selection mask.
// it's not ideal that we act like a mesh, but it's at least consistent with the drawing mask we use.
if( selectInfo.displayStatus() != M3dView::kHilite )
{
MSelectionMask meshMask( MSelectionMask::kSelectMeshes );
// Apparently selectInfo.selectable() still returns true when meshes are not
// displayed by the M3dView, so we are also testing the objectDisplay status.
// This was last confirmed in Maya 2014, and is presumably a Maya bug.
if( !selectInfo.selectable( meshMask ) || !selectInfo.objectDisplayStatus( M3dView::kDisplayMeshes ) )
{
return false;
}
}
// early out if we have no scene to draw
SceneShape *sceneShape = static_cast<SceneShape *>( surfaceShape() );
if( !sceneShape->getSceneInterface() )
{
return false;
}
IECoreGL::ConstScenePtr scene = sceneShape->glScene();
if( !scene )
{
return false;
}
// we want to perform the selection using an IECoreGL::Selector, so we
// can avoid the performance penalty associated with using GL_SELECT mode.
// that means we don't really want to call view.beginSelect(), but we have to
// call it just to get the projection matrix for our own selection, because as far
// as I can tell, there is no other way of getting it reliably.
M3dView view = selectInfo.view();
view.beginSelect();
Imath::M44d projectionMatrix;
glGetDoublev( GL_PROJECTION_MATRIX, projectionMatrix.getValue() );
view.endSelect();
view.beginGL();
glMatrixMode( GL_PROJECTION );
glLoadMatrixd( projectionMatrix.getValue() );
IECoreGL::Selector::Mode selectionMode = IECoreGL::Selector::IDRender;
if( selectInfo.displayStatus() == M3dView::kHilite && !selectInfo.singleSelection() )
{
selectionMode = IECoreGL::Selector::OcclusionQuery;
}
std::vector<IECoreGL::HitRecord> hits;
{
IECoreGL::Selector selector( Imath::Box2f( Imath::V2f( 0 ), Imath::V2f( 1 ) ), selectionMode, hits );
IECoreGL::State::bindBaseState();
selector.baseState()->bind();
scene->render( selector.baseState() );
if( selectInfo.displayStatus() != M3dView::kHilite )
{
// We're not in component selection mode. We'd like to be able to select the scene shape
// using the bounding box so we draw it too but only if it is visible
MPlug pDrawBound( sceneShape->thisMObject(), SceneShape::aDrawRootBound );
bool drawBound;
pDrawBound.getValue( drawBound );
if( drawBound )
{
IECoreGL::BoxPrimitive::renderWireframe( IECore::convert<Imath::Box3f>( sceneShape->boundingBox() ) );
}
}
}
view.endGL();
if( hits.empty() )
{
return false;
}
// iterate over the hits, converting them into components and also finding
// the closest one.
MIntArray componentIndices;
float depthMin = std::numeric_limits<float>::max();
int depthMinIndex = -1;
for( unsigned int i=0, e = hits.size(); i < e; i++ )
{
if( hits[i].depthMin < depthMin )
{
depthMin = hits[i].depthMin;
depthMinIndex = componentIndices.length();
}
int index = sceneShape->selectionIndex( IECoreGL::NameStateComponent::nameFromGLName( hits[i].name ) );
componentIndices.append( index );
}
assert( depthMinIndex >= 0 );
// figure out the world space location of the closest hit
MDagPath camera;
view.getCamera( camera );
MPoint worldIntersectionPoint;
selectionRayToWorldSpacePoint( camera, selectInfo, depthMin, worldIntersectionPoint );
// turn the processed hits into appropriate changes to the current selection
if( selectInfo.displayStatus() == M3dView::kHilite )
{
// selecting components
MFnSingleIndexedComponent fnComponent;
MObject component = fnComponent.create( MFn::kMeshPolygonComponent, &s ); assert( s );
if( selectInfo.singleSelection() )
{
fnComponent.addElement( componentIndices[depthMinIndex] );
}
else
{
fnComponent.addElements( componentIndices );
}
MSelectionList items;
items.add( selectInfo.multiPath(), component );
MDagPath path = selectInfo.multiPath();
selectInfo.addSelection(
items, worldIntersectionPoint,
selectionList, worldSpaceSelectPts,
MSelectionMask::kSelectMeshFaces,
true
);
}
else
{
// Check if we should be able to select that object
MPlug pObjectOnly( sceneShape->thisMObject(), SceneShape::aObjectOnly );
bool objectOnly;
pObjectOnly.getValue( objectOnly );
if( objectOnly && !sceneShape->getSceneInterface()->hasObject() )
{
return true;
}
// selecting objects
MSelectionList item;
item.add( selectInfo.selectPath() );
selectInfo.addSelection(
item, worldIntersectionPoint,
selectionList, worldSpaceSelectPts,
MSelectionMask::kSelectMeshes,
false
);
}
return true;
}
bool SceneShapeUI::snap( MSelectInfo &snapInfo ) const
{
MStatus s;
if( snapInfo.displayStatus() != M3dView::kHilite )
{
MSelectionMask meshMask( MSelectionMask::kSelectMeshes );
if( !snapInfo.selectable( meshMask ) )
{
return false;
}
}
// early out if we have no scene to draw
SceneShape *sceneShape = static_cast<SceneShape *>( surfaceShape() );
const IECore::SceneInterface *sceneInterface = sceneShape->getSceneInterface().get();
if( !sceneInterface )
{
return false;
}
IECoreGL::ConstScenePtr scene = sceneShape->glScene();
if( !scene )
{
return false;
}
// Get the viewport that the snapping operation is taking place in.
M3dView view = snapInfo.view();
// Use an IECoreGL::Selector to find the point in world space that we wish to snap to.
// We do this by first getting the origin of the selection ray and transforming it into
// NDC space using the OpenGL projection and transformation matrices. Once we have the
// point in NDC we can use it to define the viewport that the IECoreGL::Selector will use.
MPoint localRayOrigin;
MVector localRayDirection;
snapInfo.getLocalRay( localRayOrigin, localRayDirection );
Imath::V3d org( localRayOrigin[0], localRayOrigin[1], localRayOrigin[2] );
MDagPath camera;
view.getCamera( camera );
MMatrix localToCamera = snapInfo.selectPath().inclusiveMatrix() * camera.inclusiveMatrix().inverse();
view.beginSelect();
Imath::M44d projectionMatrix;
glGetDoublev( GL_PROJECTION_MATRIX, projectionMatrix.getValue() );
view.endSelect();
double v[4][4];
localToCamera.get( v );
Imath::M44d cam( v );
Imath::V3d ndcPt3d = ( (org * cam ) * projectionMatrix + Imath::V3d( 1. ) ) * Imath::V3d( .5 );
Imath::V2d ndcPt( std::max( std::min( ndcPt3d[0], 1. ), 0. ), 1. - std::max( std::min( ndcPt3d[1], 1. ), 0. ) );
view.beginGL();
glMatrixMode( GL_PROJECTION );
glLoadMatrixd( projectionMatrix.getValue() );
float radius = .001; // The radius of the selection area in NDC.
double aspect = double( view.portWidth() ) / view.portHeight();
Imath::V2f selectionWH( radius, radius * aspect );
std::vector<IECoreGL::HitRecord> hits;
{
IECoreGL::Selector selector( Imath::Box2f( ndcPt - selectionWH, ndcPt + selectionWH ), IECoreGL::Selector::IDRender, hits );
IECoreGL::State::bindBaseState();
selector.baseState()->bind();
scene->render( selector.baseState() );
}
view.endGL();
if( hits.empty() )
{
return false;
}
// Get the closest mesh hit.
float depthMin = std::numeric_limits<float>::max();
int depthMinIndex = -1;
for( unsigned int i=0, e = hits.size(); i < e; i++ )
{
if( hits[i].depthMin < depthMin )
{
depthMin = hits[i].depthMin;
depthMinIndex = i;
}
}
// Get the absolute path of the hit object.
IECore::SceneInterface::Path objPath;
std::string objPathStr;
sceneInterface->path( objPath );
IECore::SceneInterface::pathToString( objPath, objPathStr );
objPathStr += IECoreGL::NameStateComponent::nameFromGLName( hits[depthMinIndex].name );
IECore::SceneInterface::stringToPath( objPathStr, objPath );
// Validate the hit selection.
IECore::ConstSceneInterfacePtr childInterface;
try
{
childInterface = sceneInterface->scene( objPath );
}
catch(...)
{
return false;
}
if( !childInterface )
{
return false;
}
if( !childInterface->hasObject() )
{
return false;
}
// Get the mesh primitive so that we can query it's vertices.
double time = sceneShape->time();
IECore::ConstObjectPtr object = childInterface->readObject( time );
IECore::ConstMeshPrimitivePtr meshPtr = IECore::runTimeCast<const IECore::MeshPrimitive>( object.get() );
if ( !meshPtr )
{
return false;
}
// Calculate the snap point in object space.
MPoint worldIntersectionPoint;
selectionRayToWorldSpacePoint( camera, snapInfo, depthMin, worldIntersectionPoint );
Imath::V3f pt( worldIntersectionPoint[0], worldIntersectionPoint[1], worldIntersectionPoint[2] );
Imath::M44f objToWorld( worldTransform( childInterface.get(), time ) );
pt = pt * objToWorld.inverse();
// Get the list of vertices in the mesh.
IECore::V3fVectorData::ConstPtr pointData( meshPtr->variableData<IECore::V3fVectorData>( "P", IECore::PrimitiveVariable::Vertex ) );
const std::vector<Imath::V3f> &vertices( pointData->readable() );
// Find the vertex that is closest to the snap point.
Imath::V3d closestVertex;
float closestDistance = std::numeric_limits<float>::max();
for( std::vector<Imath::V3f>::const_iterator it( vertices.begin() ); it != vertices.end(); ++it )
{
Imath::V3d vert( *it );
float d( ( pt - vert ).length() ); // Calculate the distance between the vertex and the snap point.
if( d < closestDistance )
{
closestDistance = d;
closestVertex = vert;
}
}
// Snap to the vertex.
closestVertex *= objToWorld;
snapInfo.setSnapPoint( MPoint( closestVertex[0], closestVertex[1], closestVertex[2] ) );
return true;
}
void SceneShapeUI::draw( const MDrawRequest &request, M3dView &view ) const
{
MStatus s;
MDrawData drawData = request.drawData();
SceneShape *sceneShape = (SceneShape *)drawData.geometry();
assert( sceneShape );
view.beginGL();
M3dView::LightingMode lightingMode;
view.getLightingMode( lightingMode );
LightingState lightingState;
bool restoreLightState = cleanupLights( request, view, &lightingState );
// maya can sometimes leave an error from it's own code,
// and we don't want that to confuse us in our drawing code.
while( glGetError()!=GL_NO_ERROR )
{
}
try
{
// draw the bound if asked
if( request.token()==BoundDrawMode )
{
IECoreGL::BoxPrimitive::renderWireframe( IECore::convert<Imath::Box3f>( sceneShape->boundingBox() ) );
}
// draw the scene if asked
if( request.token()==SceneDrawMode )
{
resetHilites();
IECoreGL::ConstScenePtr scene = sceneShape->glScene();
if( scene )
{
IECoreGL::State *displayState = m_displayStyle.baseState( (M3dView::DisplayStyle)request.displayStyle(), lightingMode );
if ( request.component() != MObject::kNullObj )
{
MDoubleArray col;
s = MGlobal::executeCommand( "colorIndex -q 21", col );
assert( s );
IECoreGL::WireframeColorStateComponentPtr hilite = new IECoreGL::WireframeColorStateComponent( Imath::Color4f( col[0], col[1], col[2], 1.0f ) );
MFnSingleIndexedComponent fnComp( request.component(), &s );
assert( s );
int len = fnComp.elementCount( &s );
assert( s );
std::vector<IECore::InternedString> groupNames;
for ( int j = 0; j < len; j++ )
{
int index = fnComp.element(j);
groupNames.push_back( sceneShape->selectionName( index ) );
}
// Sort by name to make sure we don't unhilite selected items that are further down the hierarchy
std::sort( groupNames.begin(), groupNames.end() );
for ( std::vector<IECore::InternedString>::iterator it = groupNames.begin(); it!= groupNames.end(); ++it)
{
IECoreGL::GroupPtr group = sceneShape->glGroup( *it );
hiliteGroups(
group,
hilite,
const_cast<IECoreGL::WireframeColorStateComponent *>( displayState->get< IECoreGL::WireframeColorStateComponent >() )
);
}
}
scene->render( displayState );
}
}
}
catch( const IECoreGL::Exception &e )
{
// much better to catch and report this than to let the application die
IECore::msg( IECore::Msg::Error, "SceneShapeUI::draw", boost::format( "IECoreGL Exception : %s" ) % e.what() );
}
if( restoreLightState )
{
restoreLights( &lightingState );
}
view.endGL();
}