GEEKING

App/v8world/ParallelRampPoly.cpp

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+#include "stdafx.h"
+
+#include "V8World/ParallelRampPoly.h"
+#include "V8World/Mesh.h"
+
+#include "V8World/GeometryPool.h"
+#include "V8World/ParallelRampMesh.h"
+#include "Util/Math.h"
+
+
+namespace RBX {
+
+void ParallelRampPoly::buildMesh()
+{
+	Vector3 key = getSize();
+
+	aParallelRampMesh =	ParallelRampMeshPool::getToken(key);
+
+	mesh = 	aParallelRampMesh->getMesh();
+
+}
+
+Matrix3 ParallelRampPoly::getMoment(float mass) const
+{
+	Vector3 size = getSize();
+
+	float area = 2 * (size.x * size.y + size.y * size.z + size.z * size.x);
+	Vector3 I;
+	for (int i = 0; i < 3; i++) {
+		int j = (i + 1) % 3;
+		int k = (i + 2) % 3;
+		float x = size[i];		// main axis;
+		float y = size[j];
+		float z = size[k];
+		
+		float Ix = (mass / (2.0f * area)) * (		(y*y*y*z/3.0f)
+												+	(y*z*z*z/3.0f)
+												+	(x*y*z*z)
+												+	(x*y*y*y/3.0f)
+												+	(x*y*y*z)
+												+	(x*z*z*z/3.0f)	);
+		I[i] = Ix;
+	}
+	return Math::fromDiagonal(I);
+}
+
+Vector3 ParallelRampPoly::getCofmOffset( void ) const
+{
+    return aParallelRampMesh->GetLocalCofMFromMesh();
+}
+
+} // namespace RBX