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Thread: Halftone images?

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    Halftone images?

    Is it possible to make an image half-tone? It looks like Revit doesn't want to let me, either through object styles (where raster images is not on the list), Visibility Graphics (where raster images is listed but only allowed to be set visible or not), or through the "Override Graphics in View" tool (again only offering visible or not). Placing the image on an extra level then setting that level as the Underlay does not bring the raster image with the underlay either.

    Is there a workaround within Revit?

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    Put a filled region (hatch as solid) above image and than override that region (Detail Items) using "Override Graphics in View" tool as Ghost Surface. Unfortunately you cant group them together. Hope it will work.
    PijPiwo and aoiarashi like this.

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    Peter: I ended up processing the image outside of Revit, importing it again, then snapping to the corners of the original image to match scale, position and rotation before deleting the original image.

    Unfortunately, I am running RAC 2011 so I can't try your idea of applying a Ghost Surface on the masking region. If it works, I like the idea because it allows the "ghosting" of parts of the image rather than the whole thing, and because it is within Revit. Thanks for the suggestion.

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    Quote Originally Posted by Peter Jirat View Post
    Put a filled region (hatch as solid) above image and than override that region (Detail Items) using "Override Graphics in View" tool as Ghost Surface. Unfortunately you cant group them together. Hope it will work.
    Now that I'm on RAC 2013 and reminded of this thread, I thought I'd try this tip. I can't seem to find the Ghost Surface setting in the Element Graphics Override box but do see Transparency. Is transparency an evolved version of the ghost surfaces concept or am I missing something?

    In the meantime, I added a small solid filled region, used Override Graphics In View to change its transparency to 50%, and got a dark shadow over that part of the image. Increasing the transparency results in a lighter shadow, but this is actually the opposite of what I was trying to accomplish. I changed the solid fill color to white and am now accomplishing what I'd intended: it looks like a portion of the image has a spotlight shining on it (see attached).
    Attached Thumbnails Attached Thumbnails Halftone images?-screen-shot-2013-03-06-8.56.49-am.png  

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    I tried the very thing you suggested. It seems to work. However it only works on screen. As soon as I print (and even in the print preview) the region becomes solid white and covers up the drawing below. It looks great on the screen, it screens the drawing just like I wanted.

    Any idea what would be causing this? Thanks

    Quote Originally Posted by lost again again View Post
    Now that I'm on RAC 2013 and reminded of this thread, I thought I'd try this tip. I can't seem to find the Ghost Surface setting in the Element Graphics Override box but do see Transparency. Is transparency an evolved version of the ghost surfaces concept or am I missing something?

    In the meantime, I added a small solid filled region, used Override Graphics In View to change its transparency to 50%, and got a dark shadow over that part of the image. Increasing the transparency results in a lighter shadow, but this is actually the opposite of what I was trying to accomplish. I changed the solid fill color to white and am now accomplishing what I'd intended: it looks like a portion of the image has a spotlight shining on it (see attached).

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    Are you using vector printing? Often transparencies only work as expected with raster printing.

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    That did it!
    Thanks so much

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