Targetpoint command in AutoCAD – Create the target point light

The way to call Targetpoint command in AutoCAD.

Targetpoint command creates the light of target point

Targetpoint ¿

– Specify source location <0,0,0>: Fix the position of point light
– Specify target location <0,0,-10>: Fix the position of target point of the light
If the system variable LIGHTINGUNITS is set up equal 0, the following prompt line appears:

Enter an option to change [Name/Intensity/Status/shadoW/Attenuation/Color/ eXit] <eXit>:

If the system variable LIGHTINGUNITS is set up equal 1 or, the following prompt line appears:

Enter an option to change [Name/Intensity factor/Status/Photometry/shadoW/ Attenuation/ filterColor/eXit] <eXit>:

Note

If the system variable LIGHTINGUNITS is set up equal 1 or, the option Attenuation does not effect on creating the light.

THE OPTIONS

Using the optionsName/Intensity/Status/shadoW/Attenuation/Color/eXit is completely similar to the options of Point light command.

Create the Target point light following to Standard lighting

1. Enter Lightingunits command and set up the value equal 0 for standard lighting.

2. Enter Targetpoint command

3. Press to select a P position of light in drawing.

4. Press to select a position of target point on object.

5. Enter N (name) at the command prompt line and enter light name. This name will appear in properties and in Lights in Model window when calling the command.

6. Press ENTER to exit the command.

Targetpoint command in AutoCAD – Create the target point light

Choose the light and click the right mouse, choose Properties. You can use Lighting–Properties board to change the light properties. The point light has the properties to fix the existing target position.

7. Shade (Render) Shade the model (picture 12.9).

Create the target point light from a point light

8. Enter Lightingunits command and set up the value equal 1 (International units) or 2 (American units) for Photometric lighting

9. Click View menu Render Light New Point Light. Enter Pointlight command

You can drag a light from Photometric Lights tab of
Tool palettes window.

3. Define the position of light in drawing

4. Enter N (Name) at the command prompt line and enter light name. This name will appear in Properties board or in Lights in Model window when calling the command.

5. Press ENTER to exit the command

6. Choose the light and click the right mouse at the light and choose Properties, Lighting–Properties board appears. You can use this board to change the properties of the light.

7. Change the Targeted property from No to Yes

The additional target properties become available: Target X, Target Y và Target Z.

Note:

When you change Point light to Target light, the name property of the light is the same name. You should change the name for target point light.

Targetpoint command in AutoCAD – Create the target point light

Use the Point lights

Point light shines the light following to all directions from its position.

a) Point lights

Point lights do not have target object. We use point lights for general shining effects. Point light can be created by entering Pointlight command.

You create the target point light by Targetpoint command. The difference between the target point light and the point light is adding the target property. The target point light can show an object. The target point light can be created from the target light by changing Targeted property of point light from No to Yes.

When shining by Standard lighting workflow, Pointlight can be set up by hand so that its light intensity reduces following to distance of length, depending on the quadratic inverse ratio of distance or zero. As default, the reducing of light intensity is set up None.