In a nature scene, whether a close up of a single flower or a wide, sweeping mountain vista, we need to arrange the trees and rocks, or the leaves and petals, in a natural and convincing manner. We must consider the proportions of buildings and the rooms inside them, and skillfully place the furniture and light fittings. To create architectural renderings, we must become architects and interior decorators. Many things come together to make a beautiful 3D scene, such as lighting, materials, models, textures, camera settings, post-processing, particle effects, interactivity, and so on, but no matter what kind of scene we create, nothing is more important than the arrangement and movement of the pieces from which it is composed. This chapter is an introduction to moving objects around in 3D space. Word Count:8279, reading time: ~39minutes Transformations, Coordinate Systems, and the Scene Graph
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