Furniture design software DESIGN SINTEZ

Light sources - user system for AutoCAD 2009 and higher versions


Light sources - user system

Section Global illimination

Brightness - This value determines the brightness of the converted colors. The range is from 0 to  200.0.The value by default is 65.0.

Contrast - The value determines the contrast of converted color . The range is from 0 to 100.0. The value by default is 50.0.
Proportiotnal change - If you want at changing one of parameters Brightness or Contrast , to change the other in proportion ,the button must be pressed.

Colour saturation -  Determines the saturation of the converted colors. Values range from 0 to 20.0. The value by default is 1.

Section General sun lighting

Turn on/ Turn off the sun illumination - This button switches on the general lighting in the drawing and vice versa. This is a global illumination for the entire drawing.  The control is implemented for AutoCAD 2009 and higher versions. Furthermore you can insert and local light sources: Point, Distant and / or Spot lighting (spotlight).

The sun position is defined by the small buttons located around the preview of the drawing. The step of change is 22.5 degrees.

Sun position on height - The value is selected from the drop-down list and defines the position of the sun in height. Ranges from 0 to 6. Higher values correspond to greater height and vice versa.

Press Set to save the changes in this section. Cancel closes the window without saving of the made changes.

Insertion of  local light source lamp

   The lamp light source is a local light source. It simulates a lighting of an electrical bulb. It spreads light radially in all directions and it is gradually softened (its  intensity becomes less) with increasing of distance from the light source.The available shapes are: Bulb (Sphere shaped) and Pipe (Linear source). For the spheric sources  must to define the radius dimension, for the linear sources  - the source length  (length of the area for lighting).

The values by default of these sources are set in a optimum mode but they can be edited. The lamp parameters are:

Intensity  -  Specifies the inherent brightness of the light. The value by default is 0.02.

Height from floor level - Define at what level from the floor to be placed the light source.

If you want to add shadows to a source, check the option Source shadows. The presence of shadows in the job creates greater realism of the colored image.You may define the source position at its generating. Click the button Select a source position and press the left mouse button on the screen to select an insertion point of the light source.   After selecting the item you will return in the main window. Click on Set for  insertion of  the  light source in the job

Light source editing - Select it in the drawing by double clicking of the left mouse button on it. Window "Properties" of the source in AutoCAD opens, where you can make changes - to change the color, intensity, etc.


Insertion of local light source Spotlight

A spotlight distribution casts a focused beam of light like a flashlight, a follow spot in a theater, or a headlight. Its parameters are:

  1. Source name - Specifies the name of the light. The name by fefault is "Spotlight"+ source nimber in the job. Enter a new name into the field to change it.
  2. Intensity factor - This value defines the rate of reduction of the light intensity of emitted by source. Value by default is 0.02. It affects the value Intensity in the ray end.
  3. Height from floor level - Define at what level from the floor to be placed the light source.
  4. Source shadows -  If you want to add shadows to a source, check the option Source shadows. The presence of shadows in the job creates greater realism of the colored image.
  5. Intensity in the ray beginning - Sets the intensity or brightness of the light. The range is 0.00 to the maximum value that is supported by your system. The value by default is 1000.
  6. Intensity in the ray end - Reports the final brightness of the light. This is determined by the product of the Intensity in the ray beginning and the Intensity factor. (Read-only)
  7. Basic ray - Specifies the angle of the brightest cone of light. This value can range from 0 to 160 degrees. The value by default is 25.
  8. Softening periphery ray - Specifies the angle that defines the full cone of light. This value can range from 0 to 160 degrees. The default is 50 degrees.The softning
    angle must be greater than or equal to the basic ray angle.

You may define the source position at its generating. Click the button Select a source position and press the left mouse button on the screen to select an insertion point of the light source.   After selecting the item you will return in the main window. Click on Set for  insertion of  the  light source in the job

Light source editing - Select it in the drawing by double clicking of the left mouse button on it. Window "Properties" of the source in AutoCAD opens, where you can make changes - to change the color, intensity, etc.

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