Graphics Programs Reference
In-Depth Information
Summary
This chapter includes all commands and concepts related to rendering and lighting.
Rendering allows us to obtain photorealistic images from our 3D scene.
General concepts and a typical workflow were presented, followed by the
RENDER
command, the main command to render, and also save the render image. Other re-
lated commands are:
RENDERWIN
to display the render windows;
RENDERCROP
to
render just some part of the viewport, and is useful for testing;
SAVEIMG
to save a
rendered image in viewport;
RPREF
to specify all default parameters used for render-
ing, including activation of global illumination and final gather; and
RENDERPRESETS
to create rendering presets.
We then introduced illumination, starting with default, generic, and photometric light-
ing. To apply the natural lighting of the Sun, there is the
SUNPROPERTIES
command,
which can also consider sky lighting and background.
GEOGRAPHICLOCATION
spe-
cifies the location and the north direction. There are several commands to apply ar-
tificial lighting:
POINTLIGHT
to create point lights,
SPOTLIGHT
to create spot lights,
DISTANTLIGHT
to simulate lights that are far away and project parallel rays, and
WEBLIGHT
to consider web lights coming from IES files. To manage lights, we apply
the
LIGHTLIST
command. When using photometric lighting, the
RENDEREXPOSURE
command allows us to control the exposure. Finally, when opening scenes from ver-
sions prior to 2007, the
CONVERTOLDLIGHTS
command converts these old lights.
In the next chapter we will explore materials and effects.
Search WWH ::
Custom Search