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Tutorial --- Modeling A Ship _Maya_

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   Shipbuilding
   Modeling a Ship in Alias|Wavefront's Maya 2.0

   By Carsten Lind
   Email: caligraphics@get2net.dk

           One
           crucial
           thing to do
           before
           modeling is
           to do research.
           I searched the
           web and found
           images of
           cruise ships. If
           you don't do
           the research,
           you might miss
           important
           things that will
           make the
           model
           believable.

           After studying
           the images of
           the cruise
           ships carefully,
           I roughly
           sketched the
           basic shape of
           the ship in
           Maya using
           curves. These
           curves will then
           serve as a
           guideline when
                                                                             Go
           modeling the
                            Figure 1
           ship. I also
           applied all the
           curves to their
           own layer, so I


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           own layer, so I
           can turn them
           all off at once
           when
           evaluating the
           model. The hull
           of the ship was
           made by using
           Maya's birail
           function to
           sweep curves
           along two rail
           curves to get
           one side of the
           hull. The hull
           surface was
           then mirrored
           to get the
           complete hull.
           (Figure 1)

           I then build the
           front deck, by
           lofting the top
           curves from the
           hull. The
           passenger's
           cabin decks
           were then
                                                                               Classifieds
           created by                                                          Employment
           duplicating                                                         Job Seekers
           curves from the                                                       For Sale
           geometry of                                                           Services
           the hull and
           lofting them.                                                        Services
           This ensured                                                      Research Center
           continuity of
           the surface.
                                                                          Reprint Requests
           To get the                                                        Interested in article
           lower deck (the                                                  reprints? Send your
           cutout in the                                                    inquiry now. Please
           side of the hull) Figure 2                                         include article and
           I projected the                                                      authors name.
           shape of the
           lower deck                                                     Market Directories
           onto the hull                                                  Interactive company and
           surfaces and                                                        product listings,
           trimmed away                                                     categorized for digital
           the holes.                                                       content creator's use
           (Figure 2)

           A lofted
           surface from
           the trim curves
           on the hull,
           was created


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           was created
           from left side
           hull to the right
           side hull. I
           inserted a
           cylinder as a
           banister and
           duplicated it,
           running inside
           the lower deck
           side, to get
           some easy,
           yet effective
           detail on the
           lower deck.
           The chimney
           was created
           from a couple
           of lofted
           curves. The
           bridge is an
           extrusion of a
           triangular
           shaped curve
           along one
           isoparm taken
           from the front
           of the upper
           cabin decks. I
           added a few
           cylinders,
           serving as
           antennas and
           created a
           lifeboat from a
           hemisphere.
           The support for Figure 3
           the lifeboat
           was made by
           extruding a
           circle along a
           curve.

           The lifeboat
           sections were
           then duplicated
           and placed
           along the side
           of the ship's
           different decks.
           The anchor
           opening in the
           front of the hull
           was made by
           projecting two
           rectangles with
           rounded

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           rounded
           corners on the
           hull surface
           and trimming
           away the
           holes. (Figure
           3)

           I also placed a
           few boxes and
           cylinders
           randomly on
           the surfaces to
           get the kind of
           "hey we are
           humans" look
           on the ship.

           As always,
           when creating
           3D i'ts
           important to
           add some
           randomness to
           avoid the
           "perfect
           symmetry
           syndrome"
           which makes a
           model
           unbelievable.

           Always take a
           look at your
           researched
           material and
           take notice of
           the little things
           such as small
           boxes, and
           litter and used Figure 4
           sodacans and
           add those to
           get more
           realism into
           your model.

           Texturing
           I rendered an
           image of the
           ship from the
           side viewport in
           a large
           resolution
           width=1000
           and opened the
           image in

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           image in
           Photoshop. I
           made a layer
           and started to
           paint the
           texture.
           ( Figure 4)



           This is the final
           texture that
           was assigned
           as a planar
           projection as a
           color map.
           (Figure 5)        Figure 5

           When creating
           the texture,
           make sure that
           the texture is
           cropped to fit
           the bounds of
           the ship -- this
           makes the
           alignment of
           the texture a
           lot easier in
           Maya. Just
           press the 'Fit
           to bounding
           box' button in
           the attribute
           editor on the
           projection
           node.

           Here you can Figure 6
           see the texture
           applied to the
           surfaces.
           (Figure 6)



           The same
           texturing
           creation
           method will be
           used for the
           front of the top
           deck.

           I created the
           bump map for
           the windows


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Shipbuilding_tutorial                                                     Page 6 of 11
           the windows
           from the same Figure 7
           file I used for
           the colored
           texture. This is
           the greyscale
           bump map file.
           (Figure 7)




           I connected the
           bump to the
           shading
           network and
           reused as
           many of the
           network nodes
           as possible.

           Here you can
           see the
           shading
           network for the
           shader.
           (Figure 8)




                             Figure 8
           The rendered
           image with the
           bump map
           applied.
           (Figure 9) I
           find it very
           important not
           to exaggerate
           bump maps.
           This is a
           common error
           made by quite
           a few artists.
           The bump map
           was adjusted
           using IPR
           rendering,
           which enables
           you to see     Figure 9
           your
           adjustments
           immediately.

           Slowly, more

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           Slowly, more
           and more
           textures are
           being applied.
           (Figure 10)
           The chimney
           now has a
           decal and the
           front deck now
           has a wooden
           texture applied
           (it's going to be
           adjusted,
           though). I am
           going to place
           some railings
           on the edges of
           the decks and
           behind the        Figure 10
           chimney there
           will be a pool.
           But more on
           this later.


           This image
           was created to
           present the
           model for the
           client. (Figure
           11) It had to
           indicate that
           the ship was
           "under
           construction"
           and I added the
           scaffolding.

                              Figure 11
           I have cut the
           rear end of the
           ship to get a
           more irregular
           shape.
           (Figure 12)

           I drew a line,
           describing the
           shape of the
           cut.
           Duplictated the
           curve and
           lofted a surface
           between them.
           The new
           surface was
           intersected


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           intersected
           with the        Figure 12
           surfaces of the
           rear end of the
           ship and then
           trimmed.




           The texture for
           the bridge of
           the ship was
           all made in
           Maya. As you
           can see in this
           image of the
           shading
           network, it
           required quite a
           few nodes.
           (Figure 13)




                              Figure 13




           Here you can
           see the result
           of the texturing
           of the bridge.
           (Figure 14)




                              Figure 14
           The Virgin
           Trip!
           Just for the fun
           of it, I added
           the sea, and
           applied a sea
           shader I
           already had,
           just to see how
           it looked. I
           don't know who
           made this sea
           shader, but it's
           great! (Figure


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           15)                 Figure 15
           First of all, I
           wanted to have
           the windows as
           a color map.
           For this I used
           the grid texture
           which was
           applied to the
           color node.

           Then I
           duplicated the
           grid node
           network and
           applied it to the
           incandessence
           connection on
           the shader.
           This gave my
           shader a
           brighter look on
           the white parts
           on the
           windows.

           Finally, I
           created an
           environment
           sky node and
           connected it to
           the black color
           of the
           incandessence
           grid node to
           get a kind of
           reflection of a
           sky on the      Figure 16
           black parts of
           the windows.

           You can
           download the
           shader in the
           shaders
           section here at
           caligraphics
           -- or click here:
           seaWaves.ma
           You will get the
           best out of it if
           you use
           raytracing
           when you
           render your
           image.
           Another view of

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Shipbuilding_tutorial                                                                                       Page 10 of 11

           Another view of
           the ship...
           (Figure 16)


           The water level
           was adjusted a
           little and the
           shader with the
           windows was
           applied a little
           reflection.
           Notice how the
           water surface
           reflects slightly
           on the hull. I
           also added
           some more
           antennas.         Figure 17

           Once again the
           rear end was
           adjusted.
           (Figure 17)




           I added railing
           and changed
           the texture of
           the front deck.
           (Figure 18)




                              Figure 18
           Carsten Lind's studio, Caligraphics, is based in Denmark. Visit the
           Web site at http://hjem.get2net.dk/caligraphics
           Images are Copyright of Carsten Lind and Jubii A/S and may not be used or
           reproduced without prior concent of Carsten Lind or Jubii A/S Kind Regards Carsten
           Lind, 1999




                                          © 2001, Digital Media Online, All Rights Reserved




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