Transparent model + model quality

Scripting Issues
1

Hi,

QUESTION 1:
Maybe I don’t do my research the correct way in the documentation but I can’t find a way to make a model semi-transparent by setting the alpha…

For example, if I have the model of a flying baloon with his normal texture, I want the model to be semi-transparent so you can see the texture but can also see through it.

Is it possible? I’ve done some OpenGL before and it was possible so I guess it is in Panda3d. Also, if it’s possible, what am I doing wrong when searching in the documentation? Do you have any trick for a good search ? Don’t forget, I’m a newbie at Panda3d.

QUESTION 2:

I’m using the planet model found in the example of the solar system. When I make the planet bigger, I can see the plane that make the sphere. Is there a way with filter or something to make it look better or do I need a better model?

Thanks a lot :slight_smile:

Jaff

2

On every object, you need to enable transparency first. The easiest way is:

(In case this gives not good quality transparency, try other transparency modes.)

To make a model transparent, you can set its alpha scale:

model.setAlphaScale(0.5)

(With apologies to ynjh_jo, but now we know for sure that we wont reset the model’s vertex colors :wink:)

About your question two, I don’t know how the textures are created. You can try setting a different transparency mode (if its enabled at all, if not, enable it), or maybe the textures dont even have an alpha channel. If so, you’d have to add it yourself.

3

pro-rsoft, I guess you addressed setColorScale.
My question : how do you know that it changes vtx color ?
Doesn’t P3D perform color scale via lighting ? So the vtx color shouldn’t be changed. If indeed it’s changed, then it must be expensive, changing vtx color every frame ?

About the other thread, have you checked it again ? There is BIG difference.