a problem in drawing a 2D triangle

OpenGL Development JOGL Development
#1

hi all,i am newbie of jogl and opengl,i draw a triangle use this three point vertex3f(0,1,0) vertex3f(-1,-1,0) vertex3f(1,-1,0).It work but the triangle is too big ,it fiexd the full screen ,but i just want a small triangle.Is there any thing i need to set?

#2

have a look here http://nehe.gamedev.net/ and try to understand the opengl basics explained in the first lessons.

#3

thanks for your help

i am learning the tutorial ;D