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#!N
#!CSlateBlue #!N #!Rrendchp Rendering #!N
#!EC #!N #!N This chapter describes the Data Explorer rendering model,
introduces additional elements of the data model relevant only to rendering,
and describes routines for manipulating data structures for rendering. (For descriptions
of these routines, see #!Lallr,dxall1162 h Data Explorer Library Routines #!EL .) #!N #!N The Data Explorer
renderer is designed for data visualization. For example, it directly renders
scenes described by the Data Explorer data model (see #!Ldatmod,dxall197 h Understanding the Data Model #!EL ).
The renderer handles all combinations of Groups and Fields as input
Objects. The members of a Group or of a subclass of
a Group (e.g., Series and Composite Fields) are combined into one
image by the renderer. #!N #!N Rendering a scene involves fours
steps: #!N #!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N 1. Transformation
to #!F-adobe-times-medium-i-normal--18* world coordinates #!EF --Applying transforms specified by transform nodes
in the Object. #!N #!I30 #!N 2. Shading--Assigning colors to the
vertices, using the intrinsic surface colors, surface normals, surface properties specified
by Field components, and lights specified by Light Objects. #!N #!I30
#!N 3. Transformation to #!F-adobe-times-medium-i-normal--18* image coordinates #!EF --Applying transforms specified
by a camera Object. #!N #!I30 #!N 4. Tiling--Generating an image
by interpolating point colors and opacities across faces, and rendering volumes
with a rendering algorithm. #!N #!I0 #!N #!EF #!N #!N #!N
#!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Ltransec,dxall1130 h Transformation #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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