Adding Light Sources

Tool

Tool set

Light

Light_tool.png 

Visualization

The Light tool places light sources in the drawing. Select the type of light and specify the light preferences.

Light_modes.png 

Mode

Description

Directional Light

 directional.png

Projects light with parallel rays, like the sun

Point Light

point.png 

Radiates light in all directions, like a bare light bulb

Spot Light

spot.png 

Projects light in a specific direction, aimed at a specific object, like a flashlight or conventional spotlight

Custom Light

Light_cust.png 

Defines the source’s emission distribution by a standard intensity distribution profile for accurate physical lighting

Default Direction

For directional lights, click to specify the light position

Set Direction

For directional lights, click to set the light direction, and then click to specify the light position

Preferences

Sets the preferred light parameters

 

Adding a visible light source to a drawing hides the default lighting scheme that is automatically present for basic rendering purposes. The design layer containing the light source must contain 3D geometry upon which to project the light, and the 3D objects must not have a perfectly black fill (which absorbs all light).

Other methods of adding light include the linear light and the area light; see Inserting an Area or Linear Light , and in the Vectorworks Design Series, the Heliodon tool (see Solar Studies).

To add a light source:

  1. Click the tool and select the type of light source to insert (Directional Light, Point Light, Spot Light, or Custom Light). If inserting a directional light, click the light placement mode (Default Direction or Set Direction).

  2. Click Preferences to specify the light source preferences for this session.

  3. For custom lights, the Custom Light Data dialog box opens. For other light types, skip to step 5.

  4. Click Load Distribution and specify the location of the custom light distribution file, and then specify any additional custom light parameters.

  5. Click OK.

  6. The Light Preferences dialog box opens.

  7. Set the parameters.

  8. Click Directional Light Specs, Spot Light Specs, Point Light Specs, or Custom Light Specs for the selected light source type, to specify additional parameters.

  9. Click OK to return to the Light Preferences dialog box. Click OK to return to the drawing.

  10. Click to place a light object with the parameters specified in the Light Preferences dialog box.

If placing a directional light, click to specify the light position in Default Direction mode. In Set Direction mode, click once to specify the light target or direction, and then click a second time to specify the light position.

Rendering00040.png 

If placing a spot light, click to place the light, and then drag to specify the light direction and target. The spot light can be aimed at any object. Click again to set the spot light. Use the Look To Height parameter on the Object Info palette to adjust the target Z height precisely.

The spot light target handle and projection line only display when the spot light is selected. Use the Selection tool to move the light. The target handle aims the spot light and can be adjusted with the Selection tool once the spot light has been created. Use the Reshape tool to move the target handle constrained about an axis selected in the Tool bar.

Rendering00043.png 

Light_cust00046.png 

The custom light object is represented by a pair of perpendicular arrow-head vectors and two perpendicular circles. The black vector points to the target location; its axis line (the light axis) connects the light source location to the target. The red vector starts at the light source location, pointing to a reference point on the “equator” of the polar intensity distribution. Also known as the “zero angle line,” it represents the origin for measuring the intensity on the light curve.

The two vectors form the black circle, and the red circle is perpendicular to it. The black circle represents the original plane where the light curves are located. The red circle constrains the movement of the zero angle line.

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Adding Light Sources

Inserting an Area or Linear Light

Light Source Properties

Managing Lights and Cameras with the Visualization Palette

 

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