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Use
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Select the object(s) in the scene that will be draped
example, i select the red ball
i do a "Create / mcjCollider" ( as explained in the mcjCollider manual )
next i create a primitive-plane, 64x64 divisions
i move the plane above the ball
i select the plane
i launch the script
since the special arrow prop was not in the scene, the script automatically created one at 0,0,0
by default, it points up
but we want to project the plane down
so we click on the "Flip Arrow" button
we could also exit the script and orient the arrow "manually"
Select the plane and start the script
Select the "Push Onto Option
Click the "Create Push Morph" button
You should see the mcjCollider ( white line ) jump all over the plane for a few seconds
| If nothing happens it may be that you are attempting to re-use an mcjCollider from a previous session.As stated in mcjCollider's manual colliders forget the list of collide-objects when you exit the program. |
The script is taking one vertex after the other, 4096 in my example's plane and evaluated hits against the red ball.
The result of all this activity is a morph named "Onto" ( because that's the name i specified ).
Depending on the complexity of your bed sheet and the figure draped this may take minutes or seconds.
But you can interrupt the process.
Click on the "Set Morph Strength" button.
and here it is our "Onto" morph in all its humble earth worm glory.
Adjusting the vertices left behind - The "Create Floor Adjust morph" button
As you can see the vertices of the plane that would not hit the red ball are not part of the "Onto" morph
While the plane is selected and the script is running, click the "Create Floor Adjust morph" button
This operation should be moderately quick
Exit the script
Go in the plane's parameters tab, you will find the "Onto" morph and the brand new "onto_floor" morph
Use the "onto_floor" morph to adjust the altitude of the floor
Note that if the whole plane had been projected onto the ball, this would be absolutely useless.
Now, since we plan on smoothing this shape, we need to combine the "Onto" morph and the "Onto_floor" morph
Once that's done, the "Onto_floor" morph won't be destroyed but it will have its morph strength set to 0.
Click on the "Combine Floor and Push Morphs" button.
This operation should be moderately quick
Propagating the push effect a.k.a. smoothing
This is a very special type of smoothing.
Only the less displaced vertices surrounding the most displaced vertices get pulled along.
With the plane selected, and the script running, click on the "Propagate Effect" button.
You can press it more than 1 time and widen the gap around the draped object
The "Project-Through projection type
Instead of projecting the plane's vertices onto the first surface of the redball it hits, the script projects it on the last surface it crosses.
This is meant to be used to push the mattress surface under the sleeper.
So, we place the plane above the red ball, the green arrow points down, and we get this "Through" morph
once we create the floor morph, adjust it , combine it and smoothen it, we get
Here is a step by step example for an x-rotated plane
1 i select the Aiko3 root node
2 i do a Create - mcjCollider
3 i create a primitive plane 64 X 64 divisions
4 i place the plane across the face
5 i select the plane
6 i start the script
7 i exit the script
8 i select the "arrow"
9 i re-orient the arrow so in points toward the front
10 select the plane
11 start the script
12 select the "push-Through" option
13 click on the "Create Push Morph button
14 click on the "set morph strength to 100%
