//!Apply the cross-product of this and a vector
public GLVector4d cross(GLVector4d gv)
{
double[] temp = new double[] { x, y, z, w };
x = temp[1] * gv.z - temp[2] * gv.y;
y = temp[2] * gv.w - temp[3] * gv.z;
z = temp[3] * gv.x - temp[0] * gv.w;
w = temp[0] * gv.y - temp[1] * gv.x;
return(this);
}
//!Get the matrix vector dot product, used to transform vertecies
public static GLVector4d operator*(GLMatrix4d mat, GLVector4d vec)
{
GLVector4d ret = new GLVector4d();
for (byte j = 0; j < 4; ++j)
{
ret.val[j] = vec.x * mat[j]
+ vec.y * mat[j + 4]
+ vec.z * mat[j + 8]
+ vec.w * mat[j + 12];
}
return(ret);
}
//!Get the matrix vector dot product, used to transform vertecies
public static GLVector4d operator* ( GLMatrix4d mat, GLVector4d vec)
{
GLVector4d ret = new GLVector4d();
for(byte j = 0; j < 4; ++j)
{
ret.val[j] = vec.x*mat[j]
+ vec.y*mat[j+4]
+ vec.z*mat[j+8]
+ vec.w*mat[j+12];
}
return ret;
}
//!Get the vector projection of this and a vector
public GLVector4d vectorProjection( GLVector4d vin)
{
return this * dot(vin);
}
//!Get the projection of this and a vector
public double projection( GLVector4d vin)
{
return dot(vin);
}
//!Get the orthogonal projection of this and a vector
public GLVector4d orthogonalProjection( GLVector4d vin)
{
return vin - vectorProjection(vin);
}
//!Get the cross-product of this and a vector
public GLVector4d getCross( GLVector4d gv)
{
return new GLVector4d(y*gv.z-z*gv.y,z*gv.w-w*gv.z,w*gv.x-x*gv.w,x*gv.y-y*gv.x);
}
//!Get the dot product of this and a vector
public double dot( GLVector4d gv)
{
return x*gv.x + y*gv.y + z * gv.z + w * gv.w;
}
//!Apply the cross-product of this and a vector
public GLVector4d cross( GLVector4d gv)
{
double[] temp = new double[]{ x, y, z, w };
x = temp[1] * gv.z - temp[2] * gv.y;
y = temp[2] * gv.w - temp[3] * gv.z;
z = temp[3] * gv.x - temp[0] * gv.w;
w = temp[0] * gv.y - temp[1] * gv.x;
return this;
}
//!Copy a vector
public GLVector4d( GLVector4d gv)
{
Buffer.BlockCopy( gv.val, 0, val, 0, Buffer.ByteLength( gv.val ) );
}
//!Get the cross-product of this and a vector
public GLVector4d getCross(GLVector4d gv)
{
return(new GLVector4d(y * gv.z - z * gv.y, z * gv.w - w * gv.z, w * gv.x - x * gv.w, x * gv.y - y * gv.x));
}
//!Get the vector projection of this and a vector
public GLVector4d vectorProjection(GLVector4d vin)
{
return(this * dot(vin));
}
//!Get the orthogonal projection of this and a vector
public GLVector4d orthogonalProjection(GLVector4d vin)
{
return(vin - vectorProjection(vin));
}
//!Get the projection of this and a vector
public double projection(GLVector4d vin)
{
return(dot(vin));
}
//!Get the dot product of this and a vector
public double dot(GLVector4d gv)
{
return(x * gv.x + y * gv.y + z * gv.z + w * gv.w);
}
//!Copy a vector
public GLVector4d(GLVector4d gv)
{
Buffer.BlockCopy(gv.val, 0, val, 0, Buffer.ByteLength(gv.val));
}
