Can't get merge to work with elipse tool

Hey guys,

just getting into using fusion (though used nuke before). Can anyone tell me why these two elipses don't seem to multiply together with a merge node? Logically this should leave only the part where both elipses overlap.

I've transformed the elipse slightly then merge it back with itself with a multiply operation

This works fine with a image of a white circle on black just note with the matte tools. Am sure its some stupid mistake i'm doing. Any ideas?

Thanks very much

Instead of changing the apply mode, change the operator setting to In

Code: Select all

{
   Tools = ordered() {
      Transform1_1 = Transform {
         Inputs = {
            Center = Input { Value = { 0.630434782608696, 0.5 }, },
            Input = Input {
               SourceOp = "Ellipse1_1",
               Source = "Mask",
            },
         },
         ViewInfo = OperatorInfo { Pos = { 550, 247.5 } },
      },
      Merge1_1 = Merge {
         CtrlWZoom = false,
         Inputs = {
            Background = Input {
               SourceOp = "Ellipse1_1",
               Source = "Mask",
            },
            Foreground = Input {
               SourceOp = "Transform1_1",
               Source = "Output",
            },
            Operator = Input { Value = FuID { "In" }, },
            PerformDepthMerge = Input { Value = 0, },
         },
         ViewInfo = OperatorInfo { Pos = { 550, 313.5 } },
      },
      Ellipse1_1 = EllipseMask {
         Inputs = {
            MaskWidth = Input { Value = 1920, },
            MaskHeight = Input { Value = 1080, },
            PixelAspect = Input { Value = { 1, 1 }, },
            ClippingMode = Input { Value = FuID { "None" }, },
         },
         ViewInfo = OperatorInfo { Pos = { 275, 247.5 } },
      }
   }
}

Thanks Frank,

ah i see, so seems that masks are only single channels so they're mean't to work with the operators and normal mode.

Whilst the apply modes are more for blending full RGB channels.

Thanks for the info

Mask tools don't merge in the traditonal sense. They are - mask tools - they are intended to go into the mask input and are not meant to be used as 'normal' images. Just add another elipse tool behind the first one and there are different ways to combine them in the mask settings itself.

Thanks Sander,

that clears that up and thanks for the tip on inputing the mask into a mask, didn't know that, but very useful.