problem with color filling polygons with multiple rings that overlap...

[grahamcooke]

I have a polygon with 2 rings. One is the overall danger area and the second ring just draws over two left and right limitations simulating the maximum angles at which a weapon will point for this exercise.

I attach an image of the result.

My problem is that i would like the whole polyon to be filled, but when you draw over an existin part of the polyon with another part, it seems to "rub out" the fill for the overlapping part.

Is there a way round this, or is it simply that i cannot do what i want to?

hope someone can help.

[RobertScheitlin__GISP]

Graham,

   It is not completely apparent what issue you are having even with the image you provided. Are you talking about two graphics in a graphics layer that you are unhappy about the blending method results? If so look here http://forums.esri.com/Thread.asp?c=158&f=2421&t=295115&mc=7#msgid924744

[grahamcooke]

Hi Robert,

As always thanks for replying. I will try and explain a little better:

The graphic in the attachment shows a polygon plotted on my map. The polygon has two rings, both of which are created by dynamically generating an array of points based on geometric calculations, using the widget data as start points.

My problem is that i want the whole polygon to be coloured as per the fill selection on the widget. As you can see, what is actually happening is the inner part of the polygon (defined by the angled lines projecting from the left and right coordinates at 5550mils (left) and 1500mils (right)) has no fill colour as it overlaps a large part of the larger polygon ring (defined by the outside red line).

Effectively I want to create one single graphic, that has the shape you see in the screen shot including the inner lines. The problem is those left and right of arc lines which i have to draw on (in code) after i have plotted the whole outline of the danger area.

I hope this makes sense!