How to create a gradient between 3 points

[Cyrille de Brebisson]

Hello,

I am trying to draw filled a triangle with a QPainter where the filled color will be an interpolation between colors assigned to each of the 3 points of the triangle.

How to do this in Qt? I found linear gradients, but no tri color gradients.

I am looking for something like this:
http://cs.wellesley.edu/~cs307/readings/ColorInterpolation.png

Thanks,
Cyrille

[kshegunov]

@Cyrille-de-Brebisson said in How to create a gradient between 3 points:

How to do this in Qt? I found linear gradients, but no tri color gradients.

As far as I know you'd need to calculate it yourself.