///////////////////////////////////////////////////////////////////////////////
// Berechnen dieser Objekteigenschaft
STDMETHODIMP CSimpleAreaRadius::Eval (LONG lONr, LPSTR pBuffer, ULONG ulLen, ULONG *pulWritten)
{
// AFX_MANAGE_STATE(AfxGetAppModuleState())
if (NULL == pBuffer)
return E_POINTER;
_ASSERTE(0 != ulLen);
CGObject Obj (lONr);
if (Obj.FInit() && OGFlaeche == Obj.iObjTyp() && ulLen > 32) { // 32 Zeichen werden zumindest gebraucht
// nur für FlächenObjekte
double dObjArea = 0.0;
os_string strUnit;
RETURN_FAILED_HRESULT(Obj.AreaOfPolygon(&dObjArea, strUnit, true));
// muß als Längenmaßeinheit ausgewertet werden
si::Length dRadius (sqrt(dObjArea/si::pi)/2);
double dResult = dRadius.measuredIn(((CStatist *)g_pTE) -> GetUoL (dRadius, strUnit));
sprintf (pBuffer, "%f%s", dResult, strUnit.c_str());
if (pulWritten)
*pulWritten = strlen(pBuffer);
// Infos für Kumulation sammeln
RETURN_FAILED_HRESULT(m_CumPts -> AddValue (dResult, vtMissing));
IncrementCount(); // Zähler der erfolgreichen Aufrufe
return S_OK;
}
return E_FAIL; // ObjProperty existiert nicht
}
/**
* Generates n trees in a circle. The generated trees have a randomized scale
* and rotation.
*/
void Forest::generateTrees(unsigned int nTrees) {
std::uniform_real_distribution<float> dScale(1.0f, 1.5f);
std::uniform_real_distribution<float> dRadius(0.0f, this->radius);
std::uniform_real_distribution<float> dAngle(0, glm::two_pi<float>());
trees.reserve(nTrees);
Tree tree(
glm::vec3(0.0f, 0.0f, 0.0f), // position
glm::vec3(10.0f), // scaling vector
dAngle(randomGen) // phase shift
);
unsigned int generatedTrees = 0;
while (generatedTrees != nTrees) {
float radius = dRadius(randomGen);
float angle = dAngle(randomGen);
glm::vec3 position(
radius * cos(angle),
0.0f,
radius * sin(angle)
);
// discard trees generated in the river's path
if (position.x >= -50.0f && position.x <= 35.0f) {
continue;
}
trees.push_back(
Tree(tree, dAngle(randomGen))
);
trees.back().getModel()
.setPosition(position)
.scale(glm::vec3(1.0f, dScale(randomGen), 1.0f))
.rotate(dAngle(randomGen));
generatedTrees++;
}
}
