3D
-
You give objects perspective to make them appear more realistic. Make
a 2D image look like a 3D image.
3D accelerator cards help render graphics without needing the CPU to do much
work. 3D scene info can go to the video card in it's raw form.
PCI
Express
replaced
AGP
(accelerated graphics port) for video cards.
Frame Rate. software and video card effect the frame rate. slow rate appear
choppy. Some 3D cards don't support some functions so their frame rates are
highter.
Refresh Rate affect the viewability of the screen.
Stages of 3D
-
Modeling - Most 3D applications come with ready made objects.
Drawing the shapes and objects the make up a scene. Ways of making 3D shapes
-
Extrude - stretch
-
Lathe - draw outline and rotate.
-
Animation - Defining the object's motion
-
Rendering - Giving the objects surfaces and lighting effects. Can take
seconds to hours depending on the quality and complexity.
Toy Story's movie took up to 3 hours for every frame of animation.
Shading - paints darker colors on distant objects that are further than the
light source.
Raytracing - the tracing of light from it's source and follows it's path.
Very slow to render, but shows a high accuracy of lighting.
Polygons - geometric figures
by drawing lines beween 3 or more points.
-
Flat - single color
-
Gouraud - blended colors
Z-buffer - draws only
the pixels that are visible in the scene.
Bump-Mapping - Illusion of depth in textures without increasing the polygon
count.
Output file. Export for work to a file that is viewable by others. Such as
a still image, or a video clip. You can even export as 3D file formats that
are able to be imported to another application. Such as 3D Studio or AutoDesk.
VRML (WRL extension) are also compatible. Be sure to save your work in the native
file format of your editor so you can edit your files later.
You can use 3D for feedback as animated 3D buttons. Also you can use 3D programs
to make animated GIFs for your web site.
Keyframes & Tweening
Effects in editing:
Motion Blur - makes it appear are if things are moving
Depth of Field Rendering - simulates a camera moving into a scene. Things
change focus as the camera goes from foreground to background.
Special Effects plugins
Wireframe and Solid views
Inverse Kinematics - helps make figures joint's move.
Interesting Links:
http://freespace.virgin.net/hugo.elias/graphics/x_main.htm