Changing the color of a mesh at runtime...

[Vincent]

Therefore, if yourself or Vincent can find a way to modify the color of a model mesh at runtime, then this would be very useful, and might open up a few new possibilities.

CC,

Your request sounds quite easy to implement.
Though I'm busy at work at the moment, I should have a chance do it by tomorrow.
Please open a feature request on the Sourceforge Tracker.

[Chuft-Captain]

Therefore, if yourself or Vincent can find a way to modify the color of a model mesh at runtime, then this would be very useful, and might open up a few new possibilities.

CC,

Your request sounds quite easy to implement.
Though I'm busy at work at the moment, I should have a chance do it by tomorrow.
Please open a feature request on the Sourceforge Tracker.

Thanks Vincent. Will do.
(BTW: I'm assuming that the colour will be applied to the entire mesh...I suspect trying to selectively apply colour to individual faces would be too difficult, or impossible)

...In other words, in your SSC file, you can refer to one colored model using a Beginning and Ending directive, and then switch to a differently colored model with a new set of Beginning/Ending directives. It's a bit awkward, but it can be done.

Yes, you're right, it is a bit awkward. I've already considered that method as a workaround (for about 2 seconds, and then decided against it). I've used the begin/end hack for a few things in the past, and I know from experience that it's really just too awkward, and probably wouldn't achieve the intended result.... but thanks for the suggestion.

[Vincent]

I've posted a fix on SF that adds the object:surfacecolor and object:setsurfacecolor methods to celx:
https://sourceforge.net/tracker/index.p ... tid=371302

object:surfacecolor() returns a triple which corresponds to the r, g, b components of the object surface color.

Example:

Code: Select all

-- Get object initial surface color
r0, g0, b0 = object:surfacecolor()

-- Set object surface color to green
object:setsurfacecolor(0, 1, 0)

-- Give object back its initial surface color
object:setsurfacecolor(r0, g0, b0)

As pointed out by Chuft-Captain, this currently works with Celestia spheres -- and .cms models --, but not with cmod or 3ds meshes.
A different feature request -- assigned to Chris -- should be created for this issue.