SpotLight
WLJS
Execution environment
Supports dynamics
SpotLight[color_RGBColor, position_:{10,100,10} | {position_, target_}, angle_:Pi/3, intensity_:100, distance_:0, penumbra_:0, decay_:2]
places a fake source of spot light in a 3D scene (see Graphics3D). The default target
is .
Graphics3D[{Shadows[True], Polygon[ {{-5,5,-1}, {5,5,-1}, {5,-5,-1}, {-5,-5,-1}}], White, Cuboid[{-1,-1,-1}, {1,1,1}], Shadows[False], PointLight[Red, {1.5075, 4.1557, 2.6129}, 100], Shadows[True], SpotLight[Cyan, {-2.268, -2.144, 3.1635}]}, "Lighting"->None]
For the best effect, use Shadows set to True
warning
In the case of "PathTracing"
renderer, spot light can only work properly if "MultipleImportanceSampling"
is enabled in the options of Graphics3D
Dynamics
position
and target
do support dynamic updates
pos = {0,0,2};
handler = Function[data, pos = data["position"]];
KnotData[{"TorusKnot", {3, 5}}][[1]];
Graphics3D[{ Shadows[True],
%,
EventHandler[Sphere[pos, 0.1], {"transform" -> handler}],
SpotLight[White, {Offload[pos], {0,0,0}}],
Polygon[5{{-1,1,-1}, {1,1,-1}, {1,-1,-1}, {-1,-1,-1}}]
}, "Lighting"->None, ImageSize->600]