Cinema 4D - Splines, Primitives, and Their Friends
Cinema 4D provides quite an array of tools for splines, primitives, and nearly anything you can imagine. I often discover tools 'in reverse', when I want to create something and need a tool to help me do it. When you create a splash, bounce something, launch something, there's a good chance you will want to catch it in the same animation. Having a bowl should do the trick. This could be a body of water, this could be a moving vehicle in space but the shape you want and its skeletal definition will resemble a bowl. No problem.
A great way to get started on this project is by creating sphere. Picture the bowl, or pond, or spacecraft reservoir it will become but begin with a simple sphere. Once you have your sphere, make it editable by entering the 'C' key, or using the top menu item on your tool menu on the left of your layout in the standard (and most) menu layouts. A helpful exercise on making an object editable is to choose your sphere first, then click 'Structure' on the top menu. You only see 'Create Polygon' presented as an option. Make your sphere editable and click on the same 'Structure' menu option. Now nearly every option on the structure menu is available and this is an impressive library! for free 3d models
To use these tools your object needs to be editable and to have 'released' some of its property as a primitive object reclaiming some of its 'splineness'. Even the selection process in Cinema 4D involves some selection of its own which can be a bit frustrating in the beginning but like most of Cinema's features, this simply provides greater flexibility which is appreciated down the line.
Here we are going to select the upper half of our new sphere. To be able to select several sections of an object with a fell swoop, use the rectangle selector which is found under the 'Selection' menu. For this exercise use the 'right' view by entering the 'F3' function key. From this profile view for free 3d models, it is much easier to visually separate upper and lower sections of your object, in this case, a sphere. Use your rectangle selector to extend beyond the upper half into the first section of blocks below. You immediately see your upper sphere highlighted with little spears, lines extruding from the sphere. Be sure one other selection has been made and that is, under your rectangle selection attributes, 'un-check' 'Only Select Visible Elements'. With select only visible elements, that is exactly what you get and in our case, it would only choose the portion of the sphere visible in the right profile view.
Just for fun, check the 'Select Only' then use the green up arrow to draw your sphere up vertically and you will see only one side affected. Enter 'F1' to return to your perspective view and see how only part of this object is moving and the distorted shape you are creating. Now, there may be times this is exactly what you want, a partially distorted shape with only a part of one side or top being redrawn but using 'Select Only' makes all the difference. for free 3d models
Now, with these many steps of preparation, simply 'right click' then choose 'disconnect' from the options presented. You will see a 'preserve groups' option which is chosen by default. Click 'OK' and you will have your sphere in two sections now. Try different views to appreciate your what you have done. Move the upper half up to see the distinct 'half' sphere. However notice that while you have disconnected your sphere, it is still a single object. When you used the disconnect command you chose the default 'preserve groups' option.
Do this same exercise, perhaps 'Ctrl Z' to backup to the step where you separated your sphere only this time don't choose to preserve groups. Now using the 'live selection' tool, see that any separate face on your newly created polygon is a separate object. You can reshape, change color or texture to that single piece of your new shape for free 3d models.
Now we have the bowl that we sought at the beginning of the exercise. What if you wanted to keep both halves though, and sew them back together. Why, the 'stitch and sew' command would be just the thing, in our continuation of 'splines, and their friends'.
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