Added viewport independent raycast

[luis605]

GetMouseRay did not allow the user to cast a ray from the camera to the world view while in a viewport or renderTexture. To improve raylib, I added GetMouseRayEx, which has new arguments (width and height), making it easier to cast a ray to a specific viewport.

[Elkantor]

GetMouseRay did not allow the user to cast a ray from the camera to the world view while in a viewport or renderTexture. To improve raylib, I added GetMouseRayEx, which has new arguments (width and height), making it easier to cast a ray to a specific viewport.

Hey @luis605, nice addition, but you mentionned "GetMouseRayEx" in the PR description, and it's named GetViewRay in the code. As you're using the parameter named mousePosition, I think GetMouseRayEx is better ;)

[luis605]

GetMouseRay did not allow the user to cast a ray from the camera to the world view while in a viewport or renderTexture. To improve raylib, I added GetMouseRayEx, which has new arguments (width and height), making it easier to cast a ray to a specific viewport.

Hey @luis605, nice addition, but you mentionned "GetMouseRayEx" in the PR description, and it's named GetViewRay in the code. As you're using the parameter named mousePosition, I think GetMouseRayEx is better ;)

Hi @Elkantor . I was talking to @raysan5 and @JeffM2501 and we thought GetViewRay was better named than Ex.

[raysan5]

@luis605 @Elkantor Merging but function name still under consideration... GetViewProjectionRay() was also proposed as a more correct description of the functionality... Still GetMouseRayEx() seems more aligned with current API GetMouseRay()... what is the naming that could be more intuitive for new users?

I checked Unity API (that is usually VERY good at naming) and they have: Camera.ViewportPointToRay().
It seems Stride engine uses a more splicit naming (not sure if same behaviour): ScreenPositionToWorldPositionRaycast()
Godot has camera.project_ray_normal(mouse)) that I think it's similar

Do you know what naming is used in other similar libraries/frameworks/engines?