Friday, January 4, 2013
Tuesday, June 5, 2007
A BUG IN VIEW
3D max helps you make high quality movie output as well as it give a support to make Gif or flash output using its plugin extension's.
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
The changes on the scene with Materials and light
Check out the first image in this scene has all the elements except materials and shaders and in the second image when they are added using the material editor in 3Dmax we have the realistic effect of the image with shadows also mapping them.
Friday, June 1, 2007
What does a 3D application do?
3D applications essentially use complex code/algorithms to generate an image or animation that simulates the 3rd dimension. Most 3D applications have these things in common:
3D graphics engine: The graphics engine is the sub-program that generates a live, simulated 3D preview of your object/s. The engine is one part of the reason why 3D applications like to use so much of your computers CPU capacity and memory (RAM) and also the memory on your 3D graphics accelerator card. The more recent your PC, the better it will be able to handle the applications demands. You can even buy dedicated PCs and servers that are setup specially for these tasks. The 3D engine is very similar to that of those written to play 3D games.
Rendering engine: The rendering engine is a sub-program dedicated to getting the 3D data from your scene and outputting it into a 2 dimensional image. The rendering engine is perhaps the most demanding part of the 3D application. Depending upon which application you choose to use the rendering engine will have differing capabilities such as global illumination, caustics, raytracing, shadow maps, radiosity and so on. I will describe these terms later on.
Interface: The applications interface is the part that defines how you operate it. It provides menus, buttons and ways to manipulate your 3 dimensional objects. Each application has a different interface, which makes learning more than one quite difficult, but most of the concepts described in this are universal
The building blocks
These are the building blocks of making a 3 dimensional object. Each object needs these building blocks in order for the rendering engine to recognise it as a 3D object, and also for you to be able
to modify the the object itself.
The vertex:
A vertex is a precise point in 3D space. It has an X, Y and Z value to determine it's position. These X,Y and Z values are known as 'coordinates'. By itself it does nothing, but when you have a few vertices (the plural of vertex) you can start to see a 3 dimensional object take shape.
The edge:
An edge is a logical line drawn between 2 vertices. When viewed you can see a more define 3D shape.
The face (polygon):
The face is a surface generated between the points defined by vertices. Each face requires at least 3 vertices to create a surface (hence the term "3 Dimensional"). Game modellers call this a triangle ("tri") and it is used to measure the limited amount of detail a computer game model can contain. A face can be generated over 4 vertices (called a "quad"), but in reality this is just 2 triangles aligned together. The 3D graphics engine always calculates a surface in triangles, although this calculate may be transparent. In the case of 3D Studio Max it will normally display the surface in quads and hide the other edge. This makes things a little easier to view when you are manipulating your 3D object, especially if it is complex.
A light defines the way objects receive light and shadow. In a complex rendering engine like Mental Ray a light can even emit simulated photons (traces of light) and reflect them off surfaces to create an effect called global illumination. Global illumination the simulation of bounced light particles and it affects the colour, light and shadow to create a more realist render. If you know what you are doing you can use this effect to make photo realistic imagery (see the renders below for the difference).
Read more...
Subscribe to:
Posts (Atom)
