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The cover opens as a rotation, so we will rotate the constraint, rather than pull it in a line.ġ.
#NCLOTH MAYA 2017 FREE#
We can do this using a weak constraint so the cover is still relatively free to move. Select some cvs on the bottom cover and create a transform constraint. Lock the book back cover to keep from sliding MENU: "nConstraint: Component to Component"ģ. In the front view select cvs on the spine and cover to "glue" together.Ģ. Enabling thickness display on the cover will help to see how far toġ.
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Select the paper mesh and the cover mesh but nothing else and translate up. Lift the book out of collision with the ground.Ī this point we can move the book up a bit so that it just touches the ground(when thickness is included). SelfCollisionFlag = "Full Surface" ( or one could even turn off self collision for the cover )ĥ. Set Solver Display to collision thickness to preview. One needs relatively stiff settings for the cover and as well should adjust for the desired thickness. Output Geometry = polygons ( nCloth requires polys) Select both curves the do MENU "Surfaces: Loft" loft options Duplicate the curve (cntrl+d) then position the curves at the the top and bottom of the book.ģ. Use fewer cvs where you wish it to be stiff and more where it should bend.Ģ. In the front view create a single curve in the shape of the binding. The edges along the spine are then bound to the book in the same fashion as with a real book. If desired one could also paint lower stiffness values along the joint region. We can model the entire cover as a single piece, modelling with more triangles where we need it to be more flexible. Strength = 0.01 (This controls how stiff the binding is)Īdding a hardcover is not too difficult. dynamicConstraintShape2 attribute settings: Select all the cvs adjacent to the spine and create another component to component constraint.
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The next step will make it more like a stiff glue binding.ģ. The pages are now connected along the spine, however they are free to fully rotate about this connection, like with a ring binder. MENU "nConstraint: Component to Component" dynamicConstraintShape1 attribute settings: Select all the cvs along the spine of the book.Ģ. If you set solver display to "Collision Thickness" then you should see the pages just in contact with each other.ġ. When you playback now the paper should fall in a stack and be very slightly blown to the left. SubSteps = 20 (high substeps are required to handle the many stacked, colliding pages) WindSpeed = 0.01 (Note:in Maya8.5 this must be lowered when substeps are increased) SelfCollisionFlag = "Full Surface" (required for good page collisions) Number of copies = 50 (determines the number of pages)ģ. MENU: "Create: Polygon Primitives: Plane"ĭivisions = 8, 8 (generally enough given that we do a smooth later on) The following tutorial will create a 50 page hard cover bound book.ġ. (this initially took me by surprise!) The wind doesn't need to be this strong in order to simply flip pages, however I still glued part of the back page to the table using a transform constraint in order to keep the book from sliding across the table. Without wind shadowing the wind will blow on each page as if it is not inside the book, thus any gust strong enough to lift a page will also lift the entire book. NCloth in maya 8.5 does not support wind shadowing, so care must be taken not to blow the entire book into the air. Binding is accomplished using cloth constraints and to animate we use the the built in wind to blow pages over, as well as a volume axis field to "riffle" the pages so they catch in the wind. The pages are first combined into one object before creating the cloth so that only one cloth node, which is much more efficient to compute and also avoids having to set properties for individual pages. It helps if the pages are relatively low resolution for simulation and then later smoothed and extruded before rendering. There are many layers of self collision among the pages of a book, so high quality settings are required and it is important to structure the book so it is efficient to simulate. It would be almost impossible to capture the subtle motion of twisting pages this provides if one instead used deformers or other non-dynamic techniques. With nCloth it is relatively simple to create a fully dynamic book where one can flip pages naturally.