How to disable glPointParameterfv

Question

I am making some particle demo with openframeworks(v0.7.4 for iOS).

Sometimes I'd like to change their size by distance, and it works well with the code like below.

ofVboMesh mesh;
mesh.setMode(OF_PRIMITIVE_POINTS);
for(unsigned int i = 0; i < debris.size(); i++){
mesh.addVertex(debris[i]);
    mesh.addColor(color_debris[i]);
}
static GLfloat distance[] = { 0.0, 0.0, 1.0 };//------------------ set vec
glPointParameterfv(GL_POINT_DISTANCE_ATTENUATION, distance);//---- set attenuation
glPointSize(40000);
mesh.draw();

But next time when another Particles are drawn, there's no need to change their size by distance. I want to cancel or initialize what I did with glPointParameterfv().

I guess this might be really primitive question, but cannot find way to do this.

Answer 1

Just set it back to the default values, which is 1.0, 0.0, 0.0. Alternatively you could also get the original values before you change them using something like glGetFloatv(GL_POINT_DISTANCE_ATTENUATION, oldDistance); and set it back to those after you are finished drawing your particles.