[1.8, GL] Render a line between 2 BlockPos, with a colour gradient

[CraftedCart]

Hi.

I'm trying to make it so that when given 2 positions in the world (BlockPos), as well as 2 colours, I can draw a line between the 2 points with a gradient.

I know you can draw faces with the Tessellator, but I'm looking for something like this (Xycraft, where there are no visible faces):

Thanks

[Draco18s]

Well, you're still going to be drawing quads in all likelihood.  Just that you need a texture on those quads to give you the gradient.  You're not going to get the gradient effect without the texture (or a hell of a lot of work).

[CraftedCart]

Well, you're still going to be drawing quads in all likelihood.  Just that you need a texture on those quads to give you the gradient.  You're not going to get the gradient effect without the texture (or a hell of a lot of work).

 

I guess I could draw a thin cuboid, however I kinda wanted a way to dynamically change the colour of the gradient dynamically (Interpolation). Do you know of any way to do that (eg, is there a way to use a procedurally generated texture?)

 

Also the glow in the screenshot is quite nice. Does anyone have any idea how to implement that?

[N247S]

I dont know much about opengl, though Im pretty sure you can apply colors to anything with a bunch of extra effects. I remeber seeing a ton of starter tutorials about how to use opengl, sampling a simple triangle in 3 different colors (each corner another color), with a nice blend effect.

 

So why not give it a try and google for some opengl java tutorials? Im sure youll find what you are looking for!

[Draco18s]

The colorization just means you need a white png that acts as the gradient, and then you use gl_Color to give it a color.

 

And drawing a thin cuboid is going to be just as hard as drawing a single quad: you still need the 4 important corners.

 

This might help with finding the quads.