Using Assimp aiVector3D and aiMatrix3x3

gistfile1.cpp

/*+++++++++++++++++++++++++++++++++++++++++
Some sample code showing how to do basic vector operations with assimp
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

	// create a 3d Vector
	aiVector3D a(1.0f,2.0f,3.0f);
	aiVector3D b=a; //copy vector to another

	b.x=0.f; //assign value to x component of b
	//out put a vector
	std::cout << a.x << "," << a.y << "," << a.z << "\n";


	float d=a*b;//dotproduct (a & b are vectors)
	std::cout << d << "\n";

	aiVector3D c;
	c=a*5.0f; //scalar product
	c*=5.0f; //scalar product
	a=b^c;// cross product

	std::cout << a.x << "," << a.y << "," << a.z << "\n";

	a.Normalize(); //make length equal one
	std::cout << a.x << "," << a.y << "," << a.z << "\n";

	float l=c.Length();
	a=b+c; //vector addition
	a.Set(1,2,3); //set the elements

	aiMatrix3x3 m; //creat a 3x3 matrix
	aiMatrix4x4 n(m); //create a 4x4 matrix


	const float PI=3.141f;
	float angle=PI/4;//angle in radians
	
	aiMatrix3x3.Rotation(angle,a,m); //create rotation vector of angle  about  axis a
		//m contains the new matrix
	b*=m; //apply transformation m to vector b