Gradient that follows the angling of a triangle?

[jpkthebard]

I'm creating a triangle shape and want the gradient that fills it to follow the angles so that you can see an equal amount of each of the gradient's colors all the way from the point to the base. (If you google images of a prism, the equal spread of colors you see in the rainbow as it expands is what I'm going for.)

Right now you can only see the middle color in the gradient at the point but all the colors by the time you reach the base.

I'm VERY new to Illustrator, so I suspect my inability to find tutorials or tips for what I'm looking for are because I just don't know the right terms yet. Any help you can offer would be greatly appreciated.

[Monika Gause]

Can you perhaps post an example? A sketch?

[jpkthebard]

The first image is what I want: the colors follow the angle of the shape. The second image is what I'm getting: the rows of color just go straight across and "cut off" when the angle of the shape dips "below" that color's point in the gradient.

[Ton Frederiks · Accepted solution]

Try a gradient across a stroke with a width profile.

[Monika Gause · Accepted solution]

OK, thank you.

You can do this by either blending some colored lines

Or youtake that gradient on a square.

Then youneed a secong square that youturn into a triangle by moving the points:

Move them closer together

Then Object >Make gradient mesh

Move on top of the gradient and Object >Envelope > Make with top object

In the envelope options turn on the linear gradients