OpenGL - changing colours of a shape

[anoop29]

Hi there,

I am new to game programming, and I hope it's ok if some of you could kindly help me out. I understand there may be other people with problems in other threads so I will make this quick.

I've started using OpenGL for game programming. I am using opengl commands for editing colours of a shape. I have no clue how to change the colours of the shape.

is the following command:

//send the verticles and colours for the triangle
glcolour4f(1.0f , 0.0f , 0.0f , 1.of ) ;
glVertex3f (.0f , 2.5f , -1.0f ) ;
glColor4f (0.0f , 1.0f , 0.0f , 1.0f ) ;
glvertex3f (-3.5f , -2.5f , -1.0f ) ;
glColor4f (0.0f , 0.0f , 1.0f , 1.0f ) ;
glVertex3f (2.0f , -4.0f , -1.0f ) ;
glEnd ():

It asks me to make the triangle red....
now how do I go about doing this?

I'm so sorry to have asked, I'm a newbie to opengl and all

Would appreciate any help...
I do apologise if this thread is in the wrong section, please feel free to move it.

Thankyou

[GReaper]

Do you know about the RGB components? Red is (1.0f, 0.0f, 0.0f) or (1.0f, 0.0f, 0.0f, 1.0f).

glColor3f() <- Use this instead, it's easier( sort of )
Parameters:
#1: The Red component of the color
#2: The Green -||-
#3: The Blue -||-

If you want a single color, and not gouraud shading or something, you don't have to set the color for each vertex, just once before the first one will suffice.

[anoop29]

Thanks ever so much GReaper.

I think, I need to know the basics of C++ before going into anything else.

I'm currently using OPENGL beginners guide for Game programming.

I think I am jumping to conclusions, not knowing where to start of with.

Thanks for the help anyway =]