/**
* @brief
* Performs picking by using the given line start and end positions
*/
bool Picking::PerformPicking(PickingResult &cPickingResult, SceneContainer &cContainer, const Vector3 &vLineStartPos, const Vector3 &vLineEndPos, Cull::Enum nCull)
{
// Initialize the picking result
m_pPickingResult = &cPickingResult;
cPickingResult.m_pSceneNode = nullptr;
cPickingResult.m_nGeometry = 0;
cPickingResult.m_nTriangle = 0;
cPickingResult.m_vPoint = Vector3::Zero;
cPickingResult.m_pSceneContainer = &cContainer;
cPickingResult.m_vLineStartPos = vLineStartPos;
cPickingResult.m_fNearestSquaredDistance = -1.0f;
// Trace line
SQLine *pQuery = static_cast<SQLine*>(cContainer.CreateQuery("PLScene::SQLine"));
if (pQuery) {
pQuery->SignalSceneNode.Connect(EventHandlerSceneNode);
pQuery->GetLine().Set(vLineStartPos, vLineEndPos);
pQuery->SetCull(nCull);
pQuery->PerformQuery();
cContainer.DestroyQuery(*pQuery);
}
// Was something picked?
if (cPickingResult.m_pSceneNode) {
// Ensure that the picking distance is not greater than the possible maximum
if ((vLineEndPos-vLineStartPos).GetSquaredLength() >= cPickingResult.m_fNearestSquaredDistance)
return (cPickingResult.m_pSceneNode != nullptr);
}
// Nothing (in range) was picked
return false;
}
bool EngineApplication::LoadScene(const String &sFilename)
{
// Get the scene container holding our scene
SceneContainer *pContainer = GetScene();
if (!pContainer)
return false; // Error! (should NEVER happen...)
// Disable the ingame GUI
SceneNode *pGui = pContainer->GetContainer()->GetByName("GUI");
if (pGui)
pGui->SetActive(false);
// Clear the scene, after calling this method the scene is empty
ClearScene();
// Load the scene
bool bResult = pContainer->LoadByFilename(sFilename);
if (bResult) {
// Set a null pointer camera and default scene renderer
m_sDefaultSceneRenderer = "";
m_sSceneRendererVariables = "";
m_sClearColor = "";
m_sStartCamera = "";
m_pFirstFoundCamera = nullptr;
m_bHasLoadScreen = false;
// Get scene surface painter
SurfacePainter *pPainter = GetPainter();
if (pPainter && pPainter->IsInstanceOf("PLScene::SPScene")) {
// Assign the first found camera scene node to your surface listener and look for
// known key/value data scene nodes
SceneQuery *pSceneQuery = pContainer->CreateQuery("PLScene::SQEnumerate");
if (pSceneQuery) {
// Connect event handler
pSceneQuery->SignalSceneNode.Connect(EventHandlerSceneNode);
// Perform the query
pSceneQuery->PerformQuery();
// Destroy the query
pContainer->DestroyQuery(*pSceneQuery);
}
// Set to default scene renderer?
if (!m_sDefaultSceneRenderer.GetLength())
m_sDefaultSceneRenderer = DefaultSceneRenderer;
// Sets all scene renderer pass attribute values to their default value
GetSceneRendererTool().SetDefaultValues();
// Set the used scene renderer
GetSceneRendererTool().SetSceneRenderer(pContainer, m_sDefaultSceneRenderer, DefaultSceneRenderer);
// Set clear color
GetSceneRendererTool().SetPassAttribute("Begin", "ColorClear", m_sClearColor);
// Set scene renderer variables
if (m_sSceneRendererVariables.GetLength())
GetSceneRendererTool().SetValues(m_sSceneRendererVariables);
// Is there a given start camera?
SceneNode *pCamera = nullptr;
if (m_sStartCamera.GetLength()) {
SceneNode *pStartCamera = pContainer->GetByName(m_sStartCamera);
if (pStartCamera && pStartCamera->IsCamera())
pCamera = pStartCamera;
}
// Use the first found camera?
if (!pCamera)
pCamera = m_pFirstFoundCamera;
// Activate the current used camera by default
if (pCamera)
pCamera->SetActive(true);
// Assign this camera to the scene renderer and to the application
SetCamera(reinterpret_cast<SNCamera*>(pCamera));
}
// Emit the scene loading has been finished successfully event
SignalSceneLoadingFinished();
}
// Enable the ingame GUI
if (pGui)
pGui->SetActive(true);
// Done
return bResult;
}
