Hi Jonathan !
> How will a point and a vector generate another vector with the statement:
>lk_vector.sub(look_to, location);
The sub method take objects of type Tuplexx, which is the supertype of Vectorxx and
Pointxx. Therefore you can subtract a Point and a Vector. Whats actuall happening is:
lk_vector . x = look_to . x - location . x; lk_vector . y = look_to . y - ...
> When Mr. Pew declared matrix,m1 to be set to identity,what happened to the previous
>calculations?Did it make another matrix object or set the current matrix?
The previous content of the matrix is lost and m1 itself becomes the identity matrix.
Hope that helps
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