SetCenter()

[Laurent]

Is it normal practice to initialize entity's at 0,0 and then move them where you want them?

Sure it is. It makes no sense to have the entity already offsetted relatively to its local origin. Sprites are implicitely created like this, and I think it works pretty well

[tanders12]

If you call SetPosition(x, y), the top-left corner of your shape will move to (x, y).

With the following code:

Code: [Select]


line_start.x = x1;
line_start.y = y1;

line_end.x = 0 - ( Line_Length * cos( M_PI / 4 ) );
line_end.y = 0 - ( Line_Length * sin( M_PI / 4 ) );

Line = sf::Shape::Line ( 0,
                                     0,
                                     line_end.x,
                                     line_end.y
                                     Line_Thickness,
                                     Bounds_Color,
                                     Border_Width,
                                     Border_Color );

Line.SetPosition( line_start );


The top left corner of the line isn't moved to x1,y1 like you said. Instead the bottom right corner of the line is. I think it's because I'm using negatives to define the line from 0,0, correct? The reason I'm doing that is because the goal is to have a line of a given length displayed at a 160 degree angle.

[Laurent]

Yes you're right. I say "top-left corner" only as a shortcut, but in fact it's the point (0, 0).

[tanders12]

Ah ok. Well this is all still a bit confusing but it's working the way I expect now and I think I have a workable understanding of it. I'm sure as I work with things more it will eventually just click.

Thanks so much for your help Laurent and for making such an awesome library!