X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=core%2Fsrc%2Fnet%2Fsf%2Fopenrocket%2Frocketcomponent%2FMassComponent.java;fp=core%2Fsrc%2Fnet%2Fsf%2Fopenrocket%2Frocketcomponent%2FMassComponent.java;h=81e5a63d820cb07ec637541cec69d0eafc0f0150;hb=9349577cdfdff682b2aabd6daa24fdc3a7449b58;hp=49c139b0bbf1a06416e0c1bf36463f2b4cac45e1;hpb=30ba0a882f0c061176ba14dbf86d3d6fad096c02;p=debian%2Fopenrocket

diff --git a/core/src/net/sf/openrocket/rocketcomponent/MassComponent.java b/core/src/net/sf/openrocket/rocketcomponent/MassComponent.java
index 49c139b0..81e5a63d 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/MassComponent.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/MassComponent.java
@@ -40,6 +40,27 @@ public class MassComponent extends MassObject {
 	}
 	
 	
+	public double getDensity() {
+		double d = getComponentMass() / getVolume();
+		if (Double.isNaN(d))
+			d = 0;
+		return d;
+	}
+	
+	public void setDensity(double density) {
+		double m = density * getVolume();
+		m = MathUtil.clamp(m, 0, 1000000);
+		if (Double.isNaN(m))
+			m = 0;
+		setComponentMass(m);
+	}
+	
+	
+	private double getVolume() {
+		return Math.PI * MathUtil.pow2(getRadius()) * getLength();
+	}
+	
+	
 	@Override
 	public String getComponentName() {
 		//// Mass component