How to draw a line between two points ?

[Elfayer]

Hi,
I've found in the documentation this part of code :

sf::VertexArray lines(sf::LinesStrip, 2);
 lines[0].position = sf::Vector2f(10, 0);
 lines[1].position = sf::Vector2f(20, 0);

 window.draw(lines);

(cf. :  http://www.sfml-dev.org/documentation/2.0/classsf_1_1VertexArray.php )

Which is drawing a line !
But, how can I change the color of this line ?

And is there another easier way to draw lines ? (I mean is it the good way to do it ?)

Thanks in advance !

[Laurent]

A VertexArray is an array of Vertex.

If you just want to draw a single line, use a static array of vertex (sf::Vertex[]) rather than a sf::VertexArray, which uses dynamic memory allocation.

This is the best way if you want lines with no thickness. If you want thickness, you must draw a rotated rectangle instead (sf::RectangleShape).

[Haze]

But, how can I change the color of this line ?

Each vertex has a position and a color property.

sf::Vertex line[2];
line[0].position = sf::Vector2f(10, 0);
line[0].color  = sf::Color::Red;
line[1].position = sf::Vector2f(20, 0);
line[1].color = sf::Color::Red;
 

If the two vertices of the line have a different color, you'll obtain a gradient from color 1 to color 2.

[Laurent]

When we link to the documentation rather than giving the answer directly, why does someone always come and ruin it?

[Haze]

Oh, sorry about that!
I assumed you've only addressed the fact the OP used a vector for just 2 vertices.