Patterson
asked on
Spotlights in OpenGL
I am trying to make a streetlight in a program I am working on and I have all the code to make the light, point it in the right direction and everything works fine. What I want is to be able to see the light...or in other words make the actual light semi-transparent. I have done this before but I can't remember the parameters I used to do it...
Thanks,
Patterson
Thanks,
Patterson
ASKER
float ambience[4] = {0, .1, .1, 1.0};
float g_LightPosition[4] = {164, 5, 10, 1};
glLightfv( GL_LIGHT0, GL_AMBIENT, ambience );
glLightfv( GL_LIGHT0, GL_POSITION, g_LightPosition );
float light1_diffuse[4] = {1, 1, 1, 1};
float light1_pos[4] = {380, -75, 30, 1};
float light1_direction[4] = {(float)-380/388.5, (float)75/388.5, (float)-30/388.5};
glLightfv( GL_LIGHT1, GL_POSITION, light1_pos );
glLightfv( GL_LIGHT1, GL_SPOT_DIRECTION, light1_direction);
glLightf( GL_LIGHT1, GL_SPOT_CUTOFF, 45);
glLightf( GL_LIGHT1, GL_CONSTANT_ATTENUATION, .2);
glLightfv( GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
glLightf(GL_LIGHT1, ...);
From what I remember it was just a one line function call from glLightf.
Thanks,
Patterson
float g_LightPosition[4] = {164, 5, 10, 1};
glLightfv( GL_LIGHT0, GL_AMBIENT, ambience );
glLightfv( GL_LIGHT0, GL_POSITION, g_LightPosition );
float light1_diffuse[4] = {1, 1, 1, 1};
float light1_pos[4] = {380, -75, 30, 1};
float light1_direction[4] = {(float)-380/388.5, (float)75/388.5, (float)-30/388.5};
glLightfv( GL_LIGHT1, GL_POSITION, light1_pos );
glLightfv( GL_LIGHT1, GL_SPOT_DIRECTION, light1_direction);
glLightf( GL_LIGHT1, GL_SPOT_CUTOFF, 45);
glLightf( GL_LIGHT1, GL_CONSTANT_ATTENUATION, .2);
glLightfv( GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
glLightf(GL_LIGHT1, ...);
From what I remember it was just a one line function call from glLightf.
Thanks,
Patterson
I am not sure but maybe it has something to do with fog.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
That's what I was looking for...
Thanks,
Patterson
Thanks,
Patterson
Glad to have been helpfull Patterson...
Thanks for the Grade A.. :)
Max.
Thanks for the Grade A.. :)
Max.
/Joachim