Note that a wide range of light sources are available in disk files. These are located in "Network Neighbourhood/evds_print/lib" - double-click on "Network Neighbourhood," then on "evds_print", and finally on "lib" - within the folder lib, you will see folders for light source photometrics from several manufacturers. These pre-defined files can save considerable time in creating Lightscape models

The first step is to launch Lightscape and load copies of the light sources  that you may require.

1. Launch Lightscape and open the office model in your working directory.
2. Select "View-Display Original View" - you will be looking through the window of the private office.
3. Right-click in the "Luminaires" palette. From the menu, select "Load..." Left-click on the "lts(.blk)" file to select it Click on "Open"	An "Open" dialogue box will appear and the file "lts.blk" should appear in the file selection area.
4. Click "Select All" and then "OK"	An "Available Luminaires" dialogue box will appear showing entries "lt_dn1", "lt_sp2", and "lt_tube". The three luminaire names will now appear in the "Luminaire Palette"
5. If source "lt1" (the general light from Form-z) appears in the "Luminaires" palette, you should delete it as follows (if it does not appear, go to the next step) Select "lt1" (left-click on it). Right-click in the "Luminaires" palette. Select "Delete" in the menu (left-click).	This is a general light source that will interfere with the modelling  of lighting conditions if you do not remove it. "lt1" should be deleted from the palette.
Now you are ready to insert a light source.	When a library entity is placed in a CAD model, only a reference to the item is used, with X,Y,Z, rotation, and scaling information, which saves repeating a great deal of detailed information describing an entity.  This is referred to in CAD terms as an "instance"
6. Right-click in the "Layer" palette to activate its palette. Select "Create..." in the menu. Make sure that the new layer name is highlighted (left-click on it if it is not blue). Right-click on the new layer name - the layers palette menu will appear  again - select "Rename" from the menu. Type over the initial new layer name (e.g., "Item6") to give it a meaningful name (such as "lights"). Right-click on the red check mark (showing that the layer is on) to the left of "fixtures" (or whatever you name the layer in step 3 above) to bring up the menu for the "Layers" palette. Select "Make Current" - a blue "C" is overlayed on the red check mark (showing that the layer is both on and the current layer).	Create a layer for luminaires and make it the current (active) layer. A new layer name (e.g., "Item6") appears in the palette.
7. Left-click on "lt_dn1" in the "Luminaires" palette to select it and then right-click. From the menu that appears, select (left-click) "Create Single Instance"	Create the instance of the luminaire. An instance of the luminaire is placed at x,y,z=0,0,0 (see below) The luminaire symbol is longer than you might expect, because the icon represents both the lamp and its intensity distribution curves (the geometric pattern of light projected into space by the fixture).
8. Make sure that the luminaire is highlighted. It should be red in the wireframe view. If not, set "Edit-Selection-Luminaire" and click on the luminaire. Select a side view. Select "Edit-Transformation..." Select the "Position" tab and enter x,y,z=1,3,3.05; click "Apply" Click "OK"	Now move the instance of the luminaire to an appropriate location. The icons for view selection are shown below A "Transformation" dialogue box appears. The face of the luminaire (note the green line in the figure below) should now be slightly below the face of the ceiling. NOTE: It is critical that the face of the luminaire NOT be inside the ceiling of the space; otherwise, the light will not radiate around the space. If you wish, you can test this later, by repeating Part I with the face of the luminaire placed above the ceiling.
9. Save the "preparation file" (preparation files have a ".lp" extension) for future use	Once processing is initiated, Lightscape converts preparation files to "solution files" (*.ls extension), which cannot be converted back to preparation files.
10. Select the front perspective view.
11. Invoke "Process-Parameters..." Leave settings at defaults, except the following parameters in the "Process" area of the dialogue box: Make sure that "Daylight (sunlight + sky light)" is not selected (no tick in check box).	A "Process Parameters" dialogue box will appear.
12. Click on Wizard. Leave "Quality" at 3	A "Quality" dialogue box appears.
13. Click "Next" Select "no" for "Do you want to consider daylighting in your solution?"	A "Daylight" dialogue box appears. This will highlight the effects of the electric source.
14. Click "Finish" and "OK," exiting the "Wizard" dialogue box.
15. Invoke "Process-Initiate" Click "yes" to save your file. Invoke "Process-Go"	A Lightscape caution dialogue box will appear The simulation will begin. The iteration number (the number of the light transfer being considered) will be shown in the lower dialogue bar of the viewport, along with the percent of the light energy distributed. It will take about 10 seconds to go through 30 iterations and distribute about 90 percent of the light energy. At around this point, invoke "Process-Stop," so you can view the results.
16.  Invoke "Process-Stop" Invoke "Display-Solid" (or click on the corresponding icon in the last cluster on the right - use the help balloons to find it).
17. If the entire screen appears black, invoke "Edit-Properties" If not selected, select the "Display" tab. Set "Brightness" to 90 and click "Apply"; adjust lighter or darker as required. Click "OK" to close the "Document Properties" dialogue box.	A "Document Properties" dialogue box appears. Adjust the brightness until you have a satisfactory view of the space (keep the space on the dim side so that you can clearly see the pattern of light created by the luminaire).
18. Inspect the pattern of light created by this luminaire. Use "Orbit" to rotate the space up and down and from side to side. Rotate the model so that you are looking at the ceiling. With the downlight, the only light reaching the ceiling is that reflected from other room surfaces.	Lightscape provides an effective representation of the pattern of light falling on the walls and floor. The "edge" of the beam is "soft" (there is a gradual fall-off in intensity of the direct beam at its periphery) - this is an effect one would expect to see with a real light source of this type.
19. Save your model and then save it under a new name for the work in Part II.

Part II - Orienting the Luminaire

The luminaire created in Part I faced directly downward. Lightscape has tools that are useful in creating a variety of orientations. One approach is to use "Rotation" values in the "Transformation" dialogue (under Edit) to set numerical values. However, you may also orient the luminaire by clicking on a desired "target"

1. Open the ".lp" preparation file that you saved around step 10 above, and save it under a new name.
2. Select the luminaire.	It should be highlighted when selected.
3. Select a front (perspective) view.
4. Select "Edit-Transformation..." Select the "Orientation" tab and make sure that the "Pick" feature is selected	A "Transformation" dialogue box appears.
5. Click on the rear wall directly behind the lamp and 2/3 of the wall height from the floor. Click "OK" when you are satisfied with the orientation of the lamp.	You will see the icon for the lamp beam shift.
6. Save the changes to a new "preparation file" if you wish.	Once processing is initiated, they become "solution files" (".ls "extension) and cannot be converted to preparation files.
7. Follow steps 10-17 of Part I to see the effects of the change in orientation.	You will see that the bright spot has shifted to the rear wall.

Part III - Creating a Luminaire (You may leave this section until  you want to make a light source of your own)

Now you will learn to define a luminaire "from scratch." You may wish to use this procedure for your lighting design project. A simple geometric form will be used to illustrate the steps.

The first task is to create the geometry. This will be done in Form-z.

1. Launch Form-z. Set working units to centimeters. Set the grid snap to 6.3 cm.	Under "Options-Working Units..." Double-click on the grid snap icon to invoke the dialogue
2. Select the top view. Zoom in on the coordinate system origin (0,0,0) until you have about 8 grid squares from top to bottom	This will make it easier to see the relatively small source to be created
3. Set the object modifier (1st tool palette on left) to 2D.	Lightscape requires that the luminaire be made of surfaces rather than a solid, the usual creation mode in Form-z. You will first create a hexagon from which the side of the luminaire will be generated.
4. Select the "N-sided polygon" Double-click to check options and make sure that the hexagon is selected.	First tool palette on left.
5. With the "N-sided polygon" active click at the coordinate system origin (0,0,0) and drag until the polygon has a radius of 37.8 cm.
6. Go to the first axonometric view. Set "Heights" to -110 cm under "Custom"	You will now generate the sides of the luminaire from the edges of the hexagon. The luminaire to be created will be an uplighter; the intensity (candlepower) distribution curve should be placed at the top of the fixture (0,0,0), so the luminaire should be positioned below this point.
7. Set the topological selection level (4th tool palette) to segment.
8. Select the basic extrusion tool. In options, set the "Status of Objects" to "Keep" - click each of the six edges of the hexagon in turn. The face used to generate the surface model of the luminaire is no longer needed, so delete it.	6th tool palette from top
7. Set the topological selection level to object. Select and delete the hexagon, while retaining the six extruded sides.	4th tool palette
8. Save the model as a Form-z file in your working directory.	The Form-z file will be exported to "dxf" format for import in Lightscape.
9. Invoke "File-Save As..." Under "File Format" select "dxf". Select the file name you wish to use, leaving the extension as ".dxf" Click OK Set "Grouping Method" to "Single Group" and select "Export all faces as 3D faces" Click OK	"Save Project As" dialogue box appears. Save the dxf file in your working directory on your share of the system disk. A "DXF Modeling Export Options" dialogue appears

You will now add light source characteristics to the geometry that you have created.

The first step is to import the geometry into Lightscape.

1. Launch Lightscape, using a new file for this work.
2. Invoke "File-Import-DXF..."   Set the following: "Units" to "Meters" (the file in which the luminaire will be used is defined in meters) "Scale Factor" to ".00001" "Block Creation" to "By Layer" Use "Browse" to locate and select the "dxf" version of the geometry file that you created in Form-z. Click "OK" Click "Yes" if this is so, repeat step 2 with an appropriately adjusted scale factor.	An "Import DXF" dialogue box appears. A Lightscape caution should appear telling you that the imported block is about 0.065 x 0.075 x 0.110 meters
3. Note that the element you have just created appears as block "untitled" in the "Blocks" palette. Give it a name by selecting it, right-clicking, selecting "Rename" from the menu, and typing over the old name.
4. Now you are ready to add the photometric characteristics to the geometry. Copy the light distribution data for the luminaire to your working directory.	The  data file is "phillips-103a.ies" and is located on network drive courses on Hal in folder 617 (within Jim_Love_Courses) - you must be logged in to Hal to access these files
5. Right-click in the "Blocks" palette. Select "Define as luminaire..." from the menu. After proceeding beyond the caution, a "Luminaire Properties" dialogue box appears.
6. In the "Luminaire Properties" dialogue box, set the following properties Source Type = Point Lamp Color Spec. = Incandescent Color Filter =HSV, with H=0, S=0, V=1
7. Still in the "Luminaire Properties" dialogue box, set "Distribution" to "Photometric Web"	"Photometric Web" is Lightscape terminology for the set of "intensity distribution curves" that define the spatial distribution of illumination from a source. The Illuminating Engineering Society of North America (IESNA) has defined a standard computer file format (".ies") for saving such data.
8. Click "Browse" and select "phillips-103a.ies"	This designates the spatial projection of light from the source
9. Still in the "Luminaire Properties" dialogue box, set "Magnitude" to "Luminous Intensity" with a value of 3550 "cd" (candelas). Click OK to exit the "Luminaire Properties" dialogue box Click "yes" to "Overwrite existing luminaire properties"
10. Save the current preparation file.

Now you will save the new luminaire in a luminaire library so it can be used in the sample office.

1. Select the luminaire. Right-click in the "Luminaires" palette. Select "Save..." from the menu. Provide a unique new name for the library you are creating, and save it in your working directory.	A "Save As" dialogue appears.
2. Click "Save" Click "Yes"	A Lightscape caution appears - "Block library does not exist. Do you want to create a new one"

Part IV - Using the Luminaire that You Just Created

Now you will use the luminaire that you have just created in the office model.

1. Open the office model preparation file ("*.lp" extension) from Part I. Save the file as a new "*.lp" file.	Make sure that "fixtures" is still the current layer.
3. Right-click in the "Luminaires" palette Select "Load..." from the menu
4. An "Open" dialogue box appears. Select the library that you created in Part II and click "Open" Select the luminaire that you created in Part II and click "OK"	An "Available Luminaires" dialogue box appears. This luminaire will be added to the luminaires palette.
5. Select the new luminaire in the "Luminaires" palette.
6. Right-click in the "Luminaires" palette and select "Create Single Instance" from the menu	Note that an instance of the luminaire is placed at x,y,z=0,0,0; it is longer than you might expect, because the icon represents both the lamp and its candlepower distribution curve (the geometric pattern of light projected into space by the fixture).
7. Move the instance of the luminaire to an appropriate location.
8. Make sure that the luminaire is highlighted.	It should be red in the wireframe view. If not, set "Edit-Selection-Luminaire" and click on the luminaire.
9. Select a side view.
10. Select "Edit-Transformation..." - a "Transformation" dialogue box appears. Select the "Position" tab and enter x,y,z=2.9,2.5,2.5; click "Apply"	The face of the luminaire is slightly below the face of the ceiling. Click "OK"
11. Save the preparation file to a file with name of your choosing before the simulation steps below convert it to a solution file.
12. Select the front perspective view.
13. Invoke "Process-Parameters..." Leave settings at defaults, except the following parameters in the "Process" area of the dialogue box: Make sure that "Daylight (sunlight + sky light") is not selected (no tick in check box).	A "Process Parameters" dialogue box will appear.
14. Click on Wizard. Leave "Quality" at 3	A "Quality" dialogue box appears.
15. Click "Next" Select "no" for "Do you want to consider daylighting in your solution?"	A "Daylight" dialogue box appears. This will highlight the effects of the electric source
16. Click "Finish" and "OK," exiting the "Wizard" dialogue box.
17. Invoke "Process-Initiate" Click "yes" to save your file.	A "Lightscape" caution dialogue box will appear
18. Invoke "Process-Go"	The simulation will begin. The iteration number (the number of the light transfer being considered) will be shown in the lower dialogue bar of the viewport, along with the percent of the light energy distributed. It will take about 10 seconds to go through 30 iterations and distribute about 90 percent of the light energy. At around this point, invoke "Process-Stop," so you can view the results.
19.  Invoke "Process-Stop" Invoke "Display-Solid" (or click on the corresponding icon in the last cluster on the right - use the help balloons to find it). If the entire screen appears black, invoke "Edit-Properties" - otherwise proceed to the next step If not selected, select the "Display" tab. Set "Brightness" to 90 and click "Apply" Adjust the brightness in this manner until you have a satisfactory view of the space (keep the space on the dim side so that you can clearly see the pattern of light created by the luminaire). Click "OK" to close the "Document Properties" dialogue box.	A "Document Properties" dialogue box appears.
20. Inspect the pattern of light created by this luminaire.	Use "Orbit" to rotate the space up and down and from side to side. The uplighter creates a distinct pattern on the ceiling and right wall of the space.

Congratulations, you have now completed the second Lightscape tutorial!