[src] Restore getting and setting gravity and dt. Add prefab of DemoBox (#33)

* [src] Restore getting and setter for gravity and dt

* Add sort of prefab of demoBox

Author: epernod

Content/Instances/DemoBox.umap

@@ -168,23 +168,43 @@ void ASofaContext::EndPlay(const EEndPlayReason::Type EndPlayReason)
 
 void ASofaContext::setDT(float value)
 {
-    //if (m_sofaAPI)
-    //    m_sofaAPI->setTimeStep(value);
+    UE_LOG(SUnreal_log, Warning, TEXT("## ASofaContext::setDT: %f"), value);
+    if (m_sofaAPI)
+        m_sofaAPI->setTimeStep(value);
+}
+
+void ASofaContext::getDT()
+{
+	if (m_sofaAPI) 
+	{
+	    double dt = m_sofaAPI->getTimeStep();
+	    UE_LOG(SUnreal_log, Warning, TEXT("## ASofaContext::getDT: %f"), dt);
+        Dt = float(dt);
+	}
 }
 
 void ASofaContext::setGravity(FVector value)
 {
-    //if (m_sofaAPI) 
-    //{
-    //    UE_LOG(SUnreal_log, Warning, TEXT("## ASofaContext::setGravity: %f, %f, %f"), value.X, value.Y, value.Z);
-    //    double* grav = new double[3];
-    //    grav[0] = value.X;
-    //    grav[1] = value.Y;
-    //    grav[2] = value.Z;
-    //    m_sofaAPI->setGravity(grav);
-    //}
+    if (m_sofaAPI) 
+    {
+        UE_LOG(SUnreal_log, Warning, TEXT("## ASofaContext::setGravity: %f, %f, %f"), value.X, value.Y, value.Z);
+        double grav[3] = { value.X, value.Y, value.Z };
+        m_sofaAPI->setGravity(grav);
+    }
 }
 
+void ASofaContext::getGravity()
+{
+	if (m_sofaAPI)
+	{
+		double grav[3] = { 0.0, 0.0, 0.0 };
+		m_sofaAPI->getGravity(grav);
+		UE_LOG(SUnreal_log, Warning, TEXT("## ASofaContext::getGravity: %f, %f, %f"), grav[0], grav[1], grav[2]);
+		Gravity.X = float(grav[0]);
+		Gravity.Y = float(grav[1]);
+		Gravity.Z = float(grav[2]);
+	}
+}
 
 
 
@@ -332,8 +352,8 @@ void ASofaContext::loadSofaScene()
 
 
     // Pass default scene parameter
-   // this->setDT(Dt);
-   // this->setGravity(Gravity);
+    this->getGravity();
+	this->getDT();
 
     if (m_isMsgHandlerActivated == true)
         catchSofaMessages();

Source/SofaUE5/Private/SofaContext.cpp

@@ -55,9 +55,15 @@ class SOFAUE5_API ASofaContext : public AActor
     // Called every frame
     virtual void Tick( float DeltaSeconds ) override;
 
+    /// Set SOFA dt to the given input value @param value
     void setDT(float value);
+    /// Retrieve float dt value from SOFA
+    void getDT();
 
+    /// Set SOFA gravity to the input @param value
     void setGravity(FVector value);
+    /// Retrieve gravity vector3 value from SOFA
+    void getGravity();
 
 public:
     UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Sofa")