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Model and Elements
last update: 26 june 2011
The model is composed of a group of objects and other elements such as lights, materials, cameras and backgrounds. The model can be saved in .KMO file format which is the main format supported by Kribi 3D Designer.

Objects are containers of 3D geometries imported from other 3D modeling software or of a set of references to other objects called Instance Objects.

Instance objects are references to an object, but have their own characteristics (position, size, material, etc.). Any changes made to an object are also applied to its instances, but the changes made to an instance object are not applied to the referenced object.

This structure can be represented as a tree consisting of nodes. Each node contains a single object but can contain any number of instance objects. An object can be referenced as instance object several times.

At the lowest level of each tree view branch we always have objects containing the 3D geometry. It is not possible to have an instance object in the space of an object containing the 3D geometry.
This feature allows you to organize objects in a hierarchical manner, making easier to manage complex models and assemblies.

If we take a car as an example, if the wheels are instances in the object car, when changing the size of the original object wheel all other wheel instance object automatically change in the same way. Similarly, it is easy to replace all wheels with another model of wheel, or change the color and material of all wheels.

Since the object with the basic geometry of the wheel is resident only once in memory, this allows to save a substantial amount of memory.
  Model Elements
  Each model is composed of different types of elements which fall into one of the following groups:
  The object is the main element of the model. You can have many Object elements in the model but it is not possible to directly associate colors and materials to an object.
Instance Objects
  Instance Objects are contained in the space of the object. They are references to other objects, each with its own position, orientation, scale, color and material. You can have many Instance Object elements in the model. An instance object is always associated with an object.
  Several Camera elements can be defined in the model, each with its own properties. Any Camera element can be associated with the View and the animations.
  Colors are based on RGB values. Several Color elements can be present in the model, each with its own properties. Color elements can be associated with background and materials.
  Pictures are bitmap images useful to create the background or different kind of materials such as wood, stone and fabric. Images can be included in the model or can be external links to a file containing the bitmap. Picture elements can be associated with materials and background. A model can contain several Picture elements.
  Materials make the scene more realistic, they describe how an object reflects and transmits light: image mapping, reflections, transparencies and other effects are applied. The Material elements are associated with instance objects. A model can contain several Material elements.
  The background is displayed in the View. Only one Background element is contained in the model.
  Animation is a sequence of key points set in time: each key point causes a series of transformations of some elements over time, for example to create animations of the movement of the camera or of the moving instance objects. The animation is associated with camera and instance objects.
Work Lights
  Work Lights are parallel light sources used in solid and non-realistic rendering mode, and they are constantly affecting the surfaces of the shapes. A model can contain several Work Light elements.
Realistic Lights
  Realistic Lights are parallel light sources equivalent to the sun used in realistic rendering mode, and they are constantly affecting the surface of the shapes. A model can contain several Realistic Light elements.
Lights Source
  Light Sources simulate real light like the bulb of a swinging lamp used in realistic rendering mode. The model can contain several Light Source elements. The Light Source element is associated with an instance object.
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