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DTM Texture

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Is there any way to "drape" an image (say an ariel photograph) over a DTM model, in effect stretching the points on the photo to correspond to their relative points on the model?

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There's no way to do "rubber-sheeting" if your photo is highly distorted relative to the site plan, but a "texture bed" modifier should do what you want. You may have to play with texture mapping alignments, and you will need RenderWorks.

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All I can say is that some experimentation will be required to get the results you want. This is because the exact technique you use may be dependent on the image data you're using. Why don't you give it a try and tell us what you find out?

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The post on the MB about problems with the texture beds previously was related to bad data and class visibility settings and class settings.

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OK have tried this a few times now. Tessellating textures are fine, but a single large image becomes hoplessly faceted when rendered (using triangular 3D option). I'd be happy to send a file if you want.

Any chance of a "rubber-sheet" option in the future? Any other suggestions in the meantime welcome.

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You might try drawing a 3D polygon in the shape of your raster data boundary, then using the Send to Surface command to drape it over your DTM, then texturing that 3D poly. You'll have more control over the texture mapping.

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