Page 1 Modeling a Brachiosaurus: Basic Outlines

As visual reference for this tutorial, load a picture of a Brachiosaurus, Brachio.jpg from the dino directory of the CD-ROM. Place the image in the Right viewport with the ’PlaceBackgroundBitmap’ command. Place the ‘First corner’ in the top right of the viewport and the ‘Second corner or length’ as close as the bottom of the viewport as possible. Then move it (‘MoveBackgroundBitmap’ command) to the middle of the viewport, positioned as shown below. If you have a grid visible in the right viewpoint, hide it with command ’ShowGrid.’ (You can just type ShowGrid at the command prompt and press enter.)

Using the picture as reference, draw an outline of the body of the Brachiosaurus. (Do not trace the legs and head for now - they will be modeled separately later.) Double-click on the viewport title of the Right viewport to maximize it, and draw two curves (InterpCrv command) of the outlines of the dinosaur as shown below.

Use the command PtOn to see the CV’s. (CV stands for Control Vertex, which are also called Control Points.)

For the sake of efficiency, try to use as few CV’s as possible. Even if you like to draw a curve in a very detailed way, you can still come back and delete any points which seem as if they can be deleted without loss of detail. Often you may need to move points after you've drawn them, in order to best define the shape with a small point count.

Open the Osnap dialog box by clicking on the "Osnap" panel in the status bar at the bottom of the screen. To have the curves snapped to each other at the tail end, use the Object Snap 'End.'

Uncheck the snap when editing the CV’s.


NOTE: There's a slighly faster way to use the end osnap, without calling up the full dialog box. Just type "e" and then push the space bar to activate a "one-shot:" object snap where the endpoint object snap will only be in effect for that single next point pick, and then will automatically turn off.