Irradiance perspective view¶
Description¶
This instrument creates a perspective image of scene irradiance. Results show how much light is incoming over the visible surfaces. Depending on sensor type, the computed value may be scene illuminance (Y), spectral irradiance, etc…
Note
Using this feature requires a Lighting or Advanced Edition license
Children Nodes¶
This node may have a variable number of output children with custom names.
List of channels defined by a sensitivity spectrum |
|
First output preset |
|
Second output preset |
|
… |
Parameters¶
name |
type |
description |
---|---|---|
xresolution |
integer |
Horizontal buffer resolution |
yresolution |
integer |
Vertical buffer resolution |
shutter |
real |
Shutter time or exposure, in seconds |
wlmin |
real |
Low bound of simulation wavelength range |
wlmax |
real |
High bound of simulation wavelength range |
pixelfilter |
list |
The ray pixel filter |
pos |
vec3 |
The camera position : center of pupils apertures, as well as principal points |
forwards |
vec3 |
The camera optical axis, or view direction. Should be orthogonal to up |
up |
vec3 |
The camera up axis. Should be orthogonal to forwards |
Ocean XML 3.0 example¶
<instrument type="irradsphereview" name="deskview">
<prm xresolution="768"/>
<prm yresolution="384"/>
<prm shutter="1"/>
<prm wlmin="3.8e-007"/>
<prm wlmax="7.8e-007"/>
<prm pixelfilter="bilinear"/>
<prm pos="0.278 0.273 0.05"/>
<prm forwards="0 0 1"/>
<prm up="0 1 0"/>
<sensor type="ciexyz" name="sensor" y_only="true"/>
<output type="channelimage" name="irradmap">
<prm quantity="sceneradiance"/>
<prm channel="Y"/>
<prm colors="thermal"/>
<prm rangemax="200"/>
<prm logarithmic="true"/>
<prm logdecades="2"/>
<prm info="false"/>
<prm legend="true"/>
<prm grid="false"/>
<prm gridx="30"/>
<prm gridy="30"/>
</output>
</instrument>