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Old 27-09-2003, 04:24 AM   #1
Kozmonut
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Default an engraving effect??

ok, so iv made this pedestal object, now i have this pentagram curve i want to engrave on the surface - how can i do that?

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Old 27-09-2003, 11:52 AM   #2
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fatest way would be to make it a white and black bitmap and aply it to the cap as a displacement...(white canvas and draw with black, then gausian blur 2 or 3 pixels, after a bit of displacement adjustment that will displace the cap a little bit up but let the draw on the original place)

the other way(in nurbs) involves making a scaled/ofsetted duplicate(duplucate both curves and hide), trimming the inner part, then unhide the duplicates, create the shape of the engrave and birrail it using the duplicates...

the third way would be converting it all to polys drawing the shape you wanna engrave with cut edges, draw it again smaller, smooth the inner part and muve its central vertexes a bit down
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Old 27-09-2003, 05:29 PM   #3
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im pretty much a major newb, could you explain that in a little more detail?
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Old 28-09-2003, 12:17 PM   #4
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Default last time i write te quijote, i promise...

lets do it with displacement: go to photoshop and draw what you want to engrave on a 500X500 white backgroud, black painting. filters blur, gaussian blur (2 or 3 pixels) save it as normal jpg, high quality.

Back to maya window>rendering editors>multilister. Hit rmb edit create, lambert. double click the lambert swatch, on topmost place of the the window that gets open (atribute editor) youll find that you can swap betwwen lambert and lambertSG, hit lambertSG. the third atribute on the lambertSG sheet is "displacement mat." hit the chequered box on its side, on the create render node window that opens hit file, on the topmost of the attribute editor youll see displacement shader-file1, hit file1. On the image name filed hit the folder icon on its right, browse the image you created and open it.

If it is a planar and nothing weird happened before the image will be placed just on the center and it will renderthe cap a lil bit higher but the drawing on the original spot...

if not:
connect the file to the color of the lambert to make sure it is well placed( experiment with texture placing if it doesnt appears on the center)
the texture its well placed but the damn thingie doesnt displaces... dont panic:select the geometry of the cap and look the attribute editor theres a place called displacement map, hit the triangle and hit the calculate bounding box, render again, if it didnt worked higher the samples, if that doesnt worked keep experimenting
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Old 30-09-2003, 12:44 AM   #5
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You could probably use just a bump map with the bump value
set to a negative #.

A displacement map changes, and is dependent on the geometry of the surface, and will take longer to render.

for just an engraveing a bump should work just fine. for placement you can use a planer projection from the top.
Joe

PS -the letters on the gun pic is just a projected bump map.
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Old 30-09-2003, 11:48 AM   #6
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cool...
and the handle?
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Old 01-10-2003, 02:20 AM   #7
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The horse emblem is a bump
the texture is actually geometry
(lots of linear cones)
Joe
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