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Recent Forum Posts
How to extract goal of a spotlight by VEX? Jan. 10, 2018, 6:23 a.m.
Thanks a lot!!! I didn't think about cone functionality! But I have a question, why do you do coneangle*0.5? Thanks again!
How to extract goal of a spotlight by VEX? Dec. 13, 2017, 12:28 p.m.
Hi !
I have an object and a light. I want to create an attribute on the points of my object that are directly illuminated by my light. 1 when the point is illuminated, 0 when it's not. For now I have this :
4@m = optransform('/obj/hlight1');
vector lightDirection = set(0, 0, 1) * 4@m;
float result = dot(- lightDirection, @N);
result = fit(result, 0.99, 1, 0, 1);
@Cd = set(result, result, result);
The problem is that I get a value on my result even when the goal of my spotlight isn't in the direction of my object. In fact, it only takes care of my light's center. I want it to take care of my light direction but I can't find where to get the goal or target parameters (tx,ty,tz). Can you help me guys ?
I join the scene attached.
I have an object and a light. I want to create an attribute on the points of my object that are directly illuminated by my light. 1 when the point is illuminated, 0 when it's not. For now I have this :
4@m = optransform('/obj/hlight1');
vector lightDirection = set(0, 0, 1) * 4@m;
float result = dot(- lightDirection, @N);
result = fit(result, 0.99, 1, 0, 1);
@Cd = set(result, result, result);
The problem is that I get a value on my result even when the goal of my spotlight isn't in the direction of my object. In fact, it only takes care of my light's center. I want it to take care of my light direction but I can't find where to get the goal or target parameters (tx,ty,tz). Can you help me guys ?
I join the scene attached.