3. Examine
and explain the following Geometric terms: vertices; lines; curves; edge;
polygons; element; face; primitives; meshes; wireframe; surfaces.
CARTESIAN CO-ORDINATES
Were created by the French philosopher Rene Descartes (famous for "I think, therefor i am". He was also a mathematician where he invented these co-ordinates so that we had a system of plotting in a space. He used X and Y axis (X,Y). The X axis is horizontal and the Y is vertical. Numbers would follow these axis and the two axis cross at (0,0) which is the origin.
Later another axis was added so it could measure the depth. This axis was labelled the Z axis, this enabled three dimensional view. This method is now used in nearly all 3D software packages that want to work in three dimensional space. The co-ordinates for this are wrote like so. (X,Y,Z). Programs such as 3DS Max show four different views, Top viewport (X,Y), Front viewport (X,Z), left viewport (Y,Z) and Perspective viewport (X,Y,Z). The view using only two axis are called Orthographic view.

3DS MAX


Down the side of the screen is the command panel. This is where you can find Create, Modify, Hierarchy Motion, Display, Utilities. Along the top you will find the Menu Bar with lots of tabs. To start i selected the create tab and mad a shape. After deselecting i clicked the Modify tab to change dimensions. In order to orbit the object we used ALT and middle mouse button or the orbit tool. To select and move and object i use the select and move tool which is at the top of the tab, holding shift whilst doing so enables you to copy an object. Next to that tool is rotate and next to that is re-scale To see the different edge segmentation i clicked F4. F3 allows view of an objects wire frame.
I then made a parametric primitive cube (we know that is parametric because i am able to modify it's dimensions) that is 50x50x50, 3x3x3 segmentation, purple and then i changed its name.
When in an editable poly, i then was able to modify it with their sub objects. These include Vertex, Edge, Border, Polygon, Element. Then in edit poly modifier u can smooth vertices using Mesh Smooth. Then you can mold using the sub objects selection level.






No comments:
Post a Comment