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- ###############################################################################
- # #
- # Dust V2.30 - Copyright ©1994 by A.Maschke #
- # All rights reserved. #
- #-----------------------------------------------------------------------------#
- # #
- # CDEFORM-Tutorial #
- # #
- ###############################################################################
-
-
- 1. Cone->Prism (simple introduction)
- -------------------------------------------------------------------------------
-
- a) create the objects:
-
- Source:
- -create a tube (24 circle sections, turn of "stagger points",
- turn on "close bottom" and "close top")
- -enter the "Pick-faces"-mode
- -select the top-faces, create a subgroup "G1"
- -select the bottom-faces, create a subgroup "G2"
- -save it as "t1"
-
- Destination:
- -create a tube (5 circle sections, turn of "stagger points",
- turn on "close bottom" and "close top")
- -enter the "Pick-faces"-mode
- -select the top-faces, create a subgroup "G1"
- -select the bottom-faces, create a subgroup "G2"
- -save it as "t2"
-
- b) deform the source object
- -start Dust
- -load the objects
- "load(1,t1)" and
- "load(2,t2)"
- -deform it
- "cdeform(1,2,G1,"",0.2)" and
- "cdeform(1,2,G2,"",0.2)"
- -save it
- "save(1,test)"
-
- c) create the metamorphosis
- -load the object "t1", create a state "CONE" (Shape).
- -load the deformed object "test", select the "t1"-object
- and choose "States/Import" to import the state of the deformed
- object.
- -delete the "test"-object, save your states-object, morph it
-
-
- 2. Head->Bottle (nice effect) (only registered version)
- -------------------------------------------------------------------------------
- a) define the curves
-
- Source:
- -load the supplied object "head", enter the "Pick faces"-mode
- -select the the first curve at the top, name it "G1"
- (you should have selected 18 faces)
- -save it as "head2"
- -count the number of curves you want to morph: 33
- -let's start Dust to define the curves using the
- EXPANDSG-command:
- load(1,head2)
- ;create subgroups G2-G32
- for(i,1,31)
- expandsg(1,G$,G$(i+1))
- end
- save(1,head3)
- -"head3" contains 32 subgroups (curves), the remaining
- is the boundary the whole object
-
- Destination:
- -load the supplied object "bottle", enter the "Pick faces"-mode
- -select the the first curve at the top, name it "G1"
- (you should have selected 20 faces)
- -count the number of curves: 8
- -let's start Dust to define the curves using the
- EXPANDSG-command:
- load(1,bottle2)
- ;create subgroups G2-G8
- for(i,1,7)
- expandsg(1,G$,G$(i+1))
- end
- save(1,bottle3)
- -"bottle3" contains 8 subgroups (curves)
-
- b) deform the head
-
- Because the destination-oobject has less curves than the
- source -object we have to use the CDEFORMINTERP-command.
-
- The bootle has 7 segment. Let's make a list which curves
- to move into which segment. E.g., Segment 1 is build by the curves
- 1 and 2, if you want to move 5 source curves into this segment
- you have to use scale-values from 0.2 to 1.0 (step 1/5).
-
- 1 -> segment 1 (scale=0.0)
- 2-6 -> segment 1 (scale=0.2,0.4,0.6,0.8,1.0)
- 7-10 -> segment 2 (scale=0.25,0.5,0.75,1.0)
- 11-15 -> segment 3 (scale=0.2,0.4,0.6,0.8,1.0)
- 16-20 -> segment 4 (scale=0.2,0.4,0.6,0.8,1.0)
- 21-25 -> segment 5 (scale=0.2,0.4,0.6,0.8,1.0)
- 26->30 -> segment 6 (scale=0.2,0.4,0.6,0.8,1.0)
- 31->33 -> segment 7 (scale=0.3333,0.6667,1.0)
-
- A procedure which moves N curves into one segment defined
- by the curves destSG1 and destSG2 could look like this:
-
- .srcSG=<start with source-curve>
- .destSG1=<segment-curve 1>
- .destSG2=<segment-curve 2>
- .steps=<N>
- for(i,1,steps)
- .scale=i*1.0/steps
- cdeforminterp(1,2,G$(srcSG),NONE,G$(destSG1),NONE,G$(destSG2),NONE,scale,0.0,G$(srcSG-1),NONE,G$(srcSG-2),NONE)
- ;if you don't have control-curves:
- ;cdeforminterp(1,2,G$(srcSG),NONE,G$(destSG1),NONE,G$(destSG2),NONE,scale,0.0)
- .srcSG=srcSG+1
- end
-
- This procedure uses control-curves for best results.
-
- The script "head->bottle.bat" is the final script deforming the
- whole object.
- It creates the deformed object test", load this object into Imagine's
- Detail-Editor to move one point which doesn't belong to any curve
- by hand. This the inner-point of subgroup "G1".
-
- Now remove all subgroups, create a states-object, render it. You will
- produce an exciting effect.
-
-
- (15 September 1995)
-