OE2DMolDisplay

class OE2DMolDisplay : public OEMolDisplayBase

This class represents OE2DMolDisplay that stores the depiction information (such as atom coordinates, molecule scaling, representation styles etc.) of a molecule. See Figure: OEDepict TK molecule display class hierarchy.

../../_images/OEMolDisplayHierarchy.png

OEDepict TK molecule display class hierarchy

The following methods are publicly inherited from OEMolDisplayBase:

GetDataType GetMolecule IsDataType

Constructors

OE2DMolDisplay(const OEChem::OEMolBase &mol)

Initializes an OE2DMolDisplay object using default display options.

mol
The molecule for which display information is stored in the OE2DMolDisplay object.

See also

OE2DMolDisplay(const OEChem::OEMolBase &mol, const OE2DMolDisplayOptions &opts)

Initializes an OE2DMolDisplay object using the given display options.

mol
The molecule for which display information is stored in the OE2DMolDisplay object.
opts
The OE2DMolDisplayOptions object that stores properties that determine the styles of the molecule depiction.

Warning

  • An OE2DMolDisplay object does not make a copy of the OEMolBase object from which it is initialized but only stores its pointer. Therefore, the user responsibility is to not let the molecule go out of scope, before the corresponding OE2DMolDisplay object.
  • Changing the OEMolBase object from which OE2DMolDisplay object is initialized has no effect on the display itself after initialization. However, the OE2DMolDisplay object become invalid if the molecule graph is modified (atoms or bonds added or deleted).

Note

  • A warning is thrown when an OE2DMolDisplay object is initialized with a molecule with 3D coordinates.

  • An OE2DMolDisplay object is considered invalid and an error is thrown when it is initialized:

    • with an empty molecule (i.e. molecule with no atoms)
    • with a molecule that has neither 2D nor 3D coordinates

    See also: OE2DMolDisplay.IsValid method

OE2DMolDisplay(const OE2DMolDisplay &rhs)

Copy constructor.

operator=

OE2DMolDisplay &operator=(const OE2DMolDisplay &rhs)

Assignment operator.

CreateCopy

OESystem::OEBase *CreateCopy() const

Deep copy constructor that returns a copy of the object. The memory for the returned OE2DMolDisplay object is dynamically allocated and owned by the caller.

GetAtomDisplay

OE2DAtomDisplay *GetAtomDisplay(const OEChem::OEAtomBase *atom)

Returns the pointer of the OE2DAtomDisplay object that stores the depiction information of the given atom.

const OE2DAtomDisplay *GetAtomDisplay(const OEChem::OEAtomBase *atom) const

Returns the const pointer of the OE2DAtomDisplay object that stores the depiction information of the given atom.

Note

The OE2DMolDisplay.GetAtomDisplay methods returns a zero pointer if the given atom does not correspond to any display atom stored in the OE2DMolDisplay object. It is a good programming practice to check the returned pointer before using it. See code snippet below.

OE2DAtomDisplay adisp = disp.GetAtomDisplay(atom);
if (adisp != null && adisp.IsVisible()) {
    // do something
}

See also

GetAtomDisplays

OESystem::OEIterBase<OE2DAtomDisplay> *GetAtomDisplays() const

Returns an iterator over all OE2DAtomDisplay objects stored in the OE2DMolDisplay object.

OESystem::OEIterBase<OE2DAtomDisplay> *
  GetAtomDisplays(const OESystem::OEUnaryPredicate<OEChem::OEAtomBase> &pred) const

Returns an iterator over only those OE2DAtomDisplay objects for which the corresponding atom passes the given predicate. For example, the following code snippet shows how to access the atom displays of oxygen atoms:

for (OE2DAtomDisplay ad : disp.GetAtomDisplays(new OEHasAtomicNum(OEElemNo.O))) {
    if (ad.IsVisible()) {
        // do something
    }
}

See also

GetBondDisplay

OE2DBondDisplay *GetBondDisplay(const OEChem::OEBondBase *bond)

Returns the pointer of the OE2DBondDisplay object, that stores the depiction information of the given bond.

const OE2DBondDisplay *GetBondDisplay(const OEChem::OEBondBase *bond) const

Returns the const pointer of the OE2DBondDisplay object, that stores the depiction information of the given bond.

See also

Note

The OE2DMolDisplay.GetBondDisplay methods returns a zero pointer if the given bond does not correspond to any display bond stored in the OE2DMolDisplay object. It is a good programming practice to check the returned pointer before using it. See code snippet below.

OE2DBondDisplay bdisp = disp.GetBondDisplay(bond);
if (bdisp != null && bdisp.IsVisible()) {
    // do something
}

See also

GetBondDisplays

OESystem::OEIterBase<OE2DBondDisplay> *GetBondDisplays() const

Returns an iterator over all OE2DBondDisplay objects stored in the OE2DMolDisplay object.

OESystem::OEIterBase<OE2DBondDisplay> *
  GetBondDisplays(const OESystem::OEUnaryPredicate<OEChem::OEBondBase> &pred) const

See also

Returns an iterator over only those OE2DBondDisplay objects for which the corresponding bond passes the given predicate. For example, the following code snippet shows how to access the bond displays of aromatic bonds:

for (OE2DBondDisplay bd : disp.GetBondDisplays(new OEIsAromaticBond())) {
    if (bd.IsVisible()) {
        // do something
    }
}

See also

GetDataType

const void *GetDataType() const

This function is used to perform run-time type identification.

See also

GetHeight

double GetHeight() const

Returns the height of the displayed molecule.

GetLayer

OEImage &GetLayer(unsigned int position, unsigned int idx=0)

const OEImage &GetLayer(unsigned int position, unsigned int idx=0) const

Provides access to the layers of the OE2DMolDisplay object. Currently, an OE2DMolDisplay object has two layers (one OELayerPosition.Above and one OELayerPosition.Below ) that allows drawing of objects over or underneath the molecular structure, respectively.

position
This value has to be from the OELayerPosition namespace.
idx
This parameter is currently not used.

See also

GetOptions

const OE2DMolDisplayOptions &GetOptions() const

Returns the options used to initialized the OE2DMolDisplay object.

See also

GetScale

double GetScale() const

Returns the scaling factor of the displayed molecule.

GetWidth

double GetWidth() const

Returns the width of the displayed molecule.

IsDataType

bool IsDataType(const void *) const

Returns whether type is the same as the instance this method is called on.

See also

IsValid

bool IsValid() const

Returns whether the OE2DMolDisplay object was initialized successfully. If initialization was attempted with an empty molecule or a molecule with no coordinates (neither 2D nor 3D), then this method returns false. An OE2DMolDisplay object becomes invalid if the molecule, from which it was initialized, is modified. For example, atom or bonds added to or deleted from the molecule.

Hint

It is highly recommend to check whether a molecule display is valid after initialization.