Stars and Shadows

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You can set the azimuth and altitude of the light source, as well as the amount of contrast, used in rendering the illumination of the scene. The illumination properties for a scene apply shading to all areal features, including 3D faces and surface data. The azimuth is the angular direction of the sun, measured from north in clockwise degrees from 0 to The altitude is the slope or angle of the illumination source above the horizon. The units are in degrees, from 0 on the horizon to 90 overhead.

The default is 90 degrees. The contrast controls the amount of shading applied to a surface. No contrast is on the contrast scale, and 0 is the highest contrast. You may want to change the illumination angle when applying a shaded relief or hillshade to a digital elevation model DEM. Feedback on this topic?

Skip To Content. Back to Top. An example of a global scene with stars and halo.

Stars and Shadows (Original Mix)

In the Contents pane, right-click a map, and click Properties to open the Map Properties dialog box. Click the Illumination tab. Check the Show atmospheric effects check box to simulate a specific mood, such as sunset. Check the Show stars and halo check box to show stars beyond the edge of the globe and an atmospheric halo around the globe.

Check the Display shadows in 3D check box to simulate shadows in the scene.

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Depending on the light source, 3D features such as multipatches or extruded polygons can have shadows. Keep in mind that simulating shadows can impact drawing performance.

Check the Use ambient occlusion check box to make 3D content without textures appear more realistic with depth perception. If you add a layer with textures you may want to turn off ambient occlusion because the textures already have lighting information included. Ambient occlusion can impact drawing performance. This option is checked on by default. Check the Use eye-dome lighting check box to apply eye-dome lighting effects to the scene. This will improve the depth perception for LAS datasets and point cloud scene layers.

If this option is turned off, all layers will have eye-dome lighting disabled, regardless of the eye-dome lighting setting which are set from the layer's Appearance tab on the ribbon. Set Light contribution to define the brightness of the scene.

Light contribution is not available if Show atmospheric effects is checked. In that case, the light is simulated depending on the position of the sun. Grover, J.

Of Stars and Shadows

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