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Help => General => Topic started by: The Illusionist Mirage on August 15, 2013, 05:48:08 pm

Title: [Solved]Doubt in using getPosition()
Post by: The Illusionist Mirage on August 15, 2013, 05:48:08 pm

Hello

Whenever we use getPosition() in a sf::RectangleShape object, what coordinates are returned?

For example, suppose we have the following rectangle, called sf::RectangleShape Rect1 and we call Rect1.getPosition(), what is returned?

(http://3.bp.blogspot.com/-2uyZWBjDLWk/Ugz3zC-R9oI/AAAAAAAAALM/d1MgB0N4vZ8/s1600/Untitled.png)

Thanks

Title: Re: Doubt in using getPosition()
Post by: Lo-X on August 15, 2013, 05:56:37 pm

Documentation, about Origin :

Quote

The origin of an object defines the center point for all transformations (position, scale, rotation). The coordinates of this point must be relative to the top-left corner of the object, and ignore all transformations (position, scale, rotation). The default origin of a transformable object is (0, 0).

Title: Re: Doubt in using getPosition()
Post by: The Illusionist Mirage on August 15, 2013, 06:00:27 pm

Quote from: Lo-X on August 15, 2013, 05:56:37 pm

Documentation, about Origin :

Quote

The origin of an object defines the center point for all transformations (position, scale, rotation). The coordinates of this point must be relative to the top-left corner of the object, and ignore all transformations (position, scale, rotation). The default origin of a transformable object is (0, 0).

So in the above case Rect1.getPosition() returns 125, 130?

Thanks for the help

Title: Re: Doubt in using getPosition()
Post by: Grimshaw on August 15, 2013, 06:01:52 pm

No.. it returns (100,100) as lo-x explained.. The top-left corner! :))

This is only the right answer if the origin is (0,0) as the default goes, though. As Lo-X also quoted :D

Title: Re: Doubt in using getPosition()
Post by: The Hatchet on August 15, 2013, 06:02:18 pm

The default origin is (0, 0) so the upper left corner of the rectangle.  you can change the origin with setOrigin()

Title: Re: Doubt in using getPosition()
Post by: The Illusionist Mirage on August 15, 2013, 06:03:22 pm

Quote from: Grimshaw on August 15, 2013, 06:01:52 pm

No.. it returns (100,100) as lo-x explained.. The top-left corner! :))

This is only the right answer if the origin is (0,0) as the default goes, though. As Lo-X also quoted :D

Thanks! now it's totally clear! :D