I Use QwtPolar Library, want to plot a patch with its vertex position coordinate and its vertex color (or alpha) data in QWTPolarItem's draw function,

but I need the renderer fill the patch automatically with interpolated vertex data.

As example, I plotted a simple triangle in MATLAB with 3 vertex and 3 different vertex color (or alpha) data, see below image carefully:

How can I do it in QWTPolar?Is there any way?

Thanks a lot.

]]>I Use QwtPolar Library, want to plot a patch with its vertex position coordinate and its vertex color (or alpha) data in QWTPolarItem's draw function,

but I need the renderer fill the patch automatically with interpolated vertex data.

As example, I plotted a simple triangle in MATLAB with 3 vertex and 3 different vertex color (or alpha) data, see below image carefully:

How can I do it in QWTPolar?Is there any way?

Thanks a lot.

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