I am playing around with lesson 19 the particle engine. I like to make a smoke effect. But i can''t get de color''s set to gray (scale). All the particles become white. Can someone help me. thx Boldy

glColor3f(0.5f,0.5f,0.5f);
// Draw your particles

========================
Leyder Dylan
http://ibelgique.ifrance.com/Slug-Production/

Just an addendum to Leyder''s post: the number that represents a color component in a color index, is the component''s intensity - if all of the components are zero, the color turns out pitch black. Anything between zero (generally) and the maximum (generally 1 or 255), only affects the brighness of the color. If you keep all of the components equal throughout the intensity scale, you get grayscale.

Hope I''m not missing the point by presuming you''re a newbie

Crispy

thx
Ill try it !!