Is it possible to make a 3-D sphere transparent?

Programming Questions

temporalp..

Is it possible to make a 3-D sphere transparent?

in Programming Questions • 1 year ago

Hello,

I'm new to processing. I searched your past questions and couldn't find an answer.

I'm trying to make a 3-D object transparent. What I am looking for is to be able to see the contents inside of the sphere from the outside. I tried changing the alpha but all it seem to have done is fade the color of the sphere without showing me what's inside.

Thanks,

Replies(3)

tfguy44

Re: Is it possible to make a 3-D sphere transparent?

1 year ago

Seems to work fine for me. How were you doing it?

void setup(){
size(400,400,P3D);
}
void draw(){
background(0);
translate(200,200,100);
scale(80);
lights();
rotateX( map(mouseY,0,height,0,TWO_PI));
rotateY( map(mouseX,0,width,0,TWO_PI));
noStroke();
fill(255,0,0);
box(1);
fill(0,255,0,128);
if( !keyPressed ){ sphere(1); }
}

temporalp..

Re: Is it possible to make a 3-D sphere transparent?

1 year ago

Ah, it appears that if you define the transparent object first, then it won't show objects made inside it afterwards, but if you make the objects inside first, then the transparency works just fine.

Thanks!

thomas.di..

Re: Is it possible to make a 3-D sphere transparent?

1 year ago

if you put

hint(ENABLE_DEPTH_TEST);
hint(ENABLE_DEPTH_SORT);

inside setup(), you dont have to care about the drawingorder.

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