GetObjectPropertyEx
The value of card gives the actual card of the values list.
The list values of integers is a list of handles to instances, this list
has a length as givin in the values card.
The return value always should be 0, if not something is wrong in the way this property is called.
This call has the same behavior as GetObjectProperty, however needs to be
used in case properties are exchanged as a successive series of integers.
Syntax
// Visual Studio for Windows public: __int64 __declspec(dllexport) __stdcall GetObjectPropertyEx( __int64 model, __int64 owlInstance, __int64 rdfProperty, __int64 ** values, __int64 * card ); // Linux, OS-X and non-Visual Studio Windows solutions public: int64_t GetObjectPropertyEx( int64_t model, int64_t owlInstance, int64_t rdfProperty, int64_t ** values, int64_t * card );
Property model
Size: 64 bit / 8 byte (value)Property owlInstance
Size: 64 bit / 8 byte (value)Property rdfProperty
Size: 64 bit / 8 byte (value)Property values
Size: 32 bit / 4 byte (reference)Property card
Size: 32 bit / 4 byte (reference)
Example
Here you can find code snippits that show how the API call GetObjectPropertyEx can be used.
#include#include int64_t model = CreateModel(); if (model) { // // The following setting makes sure all instance handles are in an ordered list // In certain cases where several models are open or in case of conversion // between formats this can be handy and / or time efficient. // int64_t instanceCnt = 0; OrderedHandles(model, nullptr, nullptr, &instanceCnt, 4, 4); assert(instanceCnt == 0); // // Classes // int64_t classAbcd = CreateClass(model, "ABCD"); // // Object Properties (relations) // int64_t propertyAb = CreateProperty(model, OBJECTPROPERTY_TYPE, "Ab"); // // Instances // int64_t instanceAbcdI = CreateInstance(classAbcd, nullptr), instanceAbcdII = CreateInstance(classAbcd, nullptr); assert(instanceAbcdI == instanceCnt + 1); assert(instanceAbcdII == instanceCnt + 2); // // Set Properties // { SetObjectPropertyEx(model, instanceAbcdI, propertyAb, &instanceAbcdII, 1); int64_t valuesAb[3] = { instanceAbcdI, instanceAbcdII, instanceAbcdI }; SetObjectPropertyEx(model, instanceAbcdII, propertyAb, valuesAb, 3); } // // Get Properties // { int64_t card = 0, * values = nullptr; GetObjectPropertyEx(model, instanceAbcdI, propertyAb, &values, &card); assert(card == 1 && values[0] == instanceAbcdII); } { int64_t card = 0, * values = nullptr; GetObjectPropertyEx(model, instanceAbcdII, propertyAb, &values, &card); assert(card == 3 && values[0] == instanceAbcdI && values[1] == instanceAbcdII && values[2] == instanceAbcdI); } // // The same can be applied to existing classes and properties // // // Classes // int64_t classCollection = GetClassByName(model, "Collection"), classCube = GetClassByName(model, "Cube"); // // Object Properties (relations) // int64_t propertyObjects = GetPropertyByName(model, "objects"); // // Datatype Properties (attributes) // int64_t propertyLength = GetPropertyByName(model, "length"); // // Instances (creating) // int64_t instanceCollectionI = CreateInstance(classCollection, nullptr), instanceCollectionII = CreateInstance(classCollection, nullptr), instanceCube = CreateInstance(classCube, nullptr); assert(instanceCollectionI == instanceCnt + 3); assert(instanceCollectionII == instanceCnt + 4); assert(instanceCube == instanceCnt + 5); double length = 1.0; SetDatatypePropertyEx(model, instanceCube, propertyLength, &length, 1); int64_t values[3] = { instanceCollectionII, instanceCube, instanceCube }; SetObjectPropertyEx(model, instanceCollectionI, propertyObjects, values, 3); SetObjectPropertyEx(model, instanceCollectionII, propertyObjects, &instanceCube, 1); // // CollectionI contains 3 cubes and CollectionII contains 1 cube // // // The resulting model can be viewed in 3D-Editor.exe // SaveModel(model, "c:\\created\\myFile.bin"); CloseModel(model); }