CODEWITHSUNDEEP
c++glm-math
FrickeFresh
FrickeFresh

Reputation: 1758

Check if glm::vec3 has be set

If I declare a value as glm::vec3 myVector; am I able to just check safely that it is null by doing a 

if (!myVector) { 
  setVector(myVector); 
}

or is there a way to set glm::vec3 values to null without having to set each individual value to null

Upvotes: 2

Views: 3265

Answers (1)

Rama
Rama

Reputation: 3305

When you declare the vector as

glm::vec3 myVector;

It don't get initialised, you need to declare as:

glm::vec3 myVector(0.0);

To get properly initialised to 0.

BTW:

if (!myVector) { //It is always false, because, it is a reference to a local variable, not a pointer.

Cited:

If there is a single scalar parameter to a vector constructor, it is used to initialize all components of the constructed vector to that scalar’s value.

Upvotes: 1

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