Graphics Reference
In-Depth Information
When working with a daytime scene, the first step is to increase the
Sun amount
slider. This action makes the sunlight bounce around the environment and
automatically improves the light in areas where it is difficult for the light to hit.
This will work fine for buildings with big windows and loads of light entering
through the window, but in scenes where we have limited exterior light, there is
a second option.
Have a look at the previous screenshot to locate the
Select lights
button. Click
on this button, and for a few moments, we are back to the
Build
mode with a
small change. Instead of controlling 3D models and other elements, we have the
opportunity to select the spotlights with the left mouse button and then, using the
Spotlight GI amount slider, start to adjust the spotlight's influence over the scene
and the light produced.
The trick with this feature is to select just a few key spotlights and use this option to
bring extra light into the scene. There is no need to add global illumination to every
single light in the scene, because this will also increase the render time. The next trick
is not directly related to lights, but lends an extra hand to improve the reflections.
Improving reflections with a reflection cube
A reflection cube is a feature that can be found under
Lights And Utilities Library
.
This is the easiest way to add more accurate reflections to the glass and other
elements with reflectivity without increasing the render time. Inside
Lights And
Utilities Library
, there is a tab called
Utilities
and here, we can select
Relection
Control
to add reflection control to the scene in the same way we would add a
3D model.
The position and height of the reflection control can make all the difference
and in reality, will produce different results. This happens because the reflections
in Lumion depend on a panoramic reflection texture that is projected onto all
reflective materials, and by specifying the position of the reflection control, we are
dictating where the panoramic reflection texture should be rendered. We can use
the combination of
Ctrl
+
-U
to update the reflection texture produced by this
reflection control.
