Saturday, October 26, 2013

CREATING A POINT SOURCE OF LIGHT As already noted, the point emitter simulates the light bulb. Thus

Sources of Light 12. Visualization of AutoCAD, Autodesk Inventor, 3ds Max. Lessons and video courses AutoCAD, Autodesk Inventor, 3ds Max. Lessons urban lighting and video lessons
TYPES OF LIGHTING lighting urban lighting settings play an important role in giving urban lighting a realistic renderings. AutoCAD supports four types of lighting: solar (scattered) light, remote transmitter, a point emitter and a searchlight. Lighting sunlight suggests the effect of natural light and is used to demonstrate the effect of shadows on the subject of the surrounding views. Floodlighting is characterized by parameters such as the direction and taper light flux. In most cases this method light is used to highlight the characteristics of objects. The size of the light cone and the lighting direction set by selecting a source. If the increasing distance from the source to the object, the light intensity decreases. This type of radiators characterized by parameters such as the "bright spot" and "Full cone." "Bright Spot" - a region with the most saturated beam of light, and the "full cone" - the main part of the light beam formed urban lighting by a spotlight. Thus, the transmitter actually emulates a flashlight. Lighting sunlight is the simplest and is used primarily as an aid to increase the overall brightness of the image on the stage toning. urban lighting Lighting remote source is characterized by severe radiation directivity urban lighting with adjustable light intensity. This type of radiators characterized by parameters such as azimuth and elevation. The azimuth angle is set, and determines the light source with respect to objects in the plane XY. The elevation angle is also determined, but postponed this angle of the plane XY, closer to the axis Z (elevation of the end value). Using the azimuth and elevation can be lit evenly almost all objects in the drawing from any point in space. Finally, a point radiator simulates the light bulb, ie luminous flux scattered from a predetermined position urban lighting in all directions with decreasing intensity with increasing distance from the source.
OPTIONS Sunlight Sunlight is the main source of natural light in AutoCAD. urban lighting If a photometric mode (for LIGHTNGUNITS system variable is set to 1 or 2), then there are additional properties of the sun, and visualization is performed urban lighting using a model of the solar light. If you use the standard mode (LIGHTNGUNITS system variable is set to 0), the additional properties of light and the sky are not available. Setting the properties of the sun is by using the Sun properties. This command opens a palette urban lighting of Sun Properties (Parameters of the sun) (Fig. 12.18). Consider the basic characteristics of sunlight, customizable using this palette. In the section General (Basic) includes such parameters: Status (Status) - is designed to enable urban lighting and disable the sunlight; Intensity Factor (intensity factor) - sets the intensity or brightness of the sun (the range is from 0 (no light) to maximum) , the higher the number, the brighter urban lighting the light; Color (Color) - determines the color of the light source; Shadows (with shadows) - designed to enable or disable the display and calculation of shadows from the sun. The angle of illumination using solar light is determined by the geographical location given by the model, as well as the date and time. These properties can be changed in the Sun Angle Calculator (Calculate the position of the sun), or in a dialog box, Geographic Location (Ggograficheskoe position) (Fig. 12.19). The latter can cause the respective urban lighting button located in the tool group Sun & Location (Sun and location) tab Render (Render). In this window, the time zone is determined by the location, but it can also be configured independently of the location (using a system variable TIMEZONE). In this window, the installation is the latitude and longitude (Section Latitude & Longitude) and direction (Section North Directiori) in decimal values. However, any value can be entered from the keyboard and select the location on the map.
CREATING A POINT SOURCE OF LIGHT As already noted, the point emitter simulates the light bulb. Thus the luminous flux diffused in all directions with decreasing intensity with increasing distance from the source. This type of radiators is useful to highlight the shady places the drawing (Fig. 12.20). To create a point light source rather select button
AutoCAD has further select the light source in three-dimensional space. To facilitate this procedure, the screen displays a marker indicating the current position of the emitter. In order to choose the insertion point of the radiator, urban lighting simply click in the desired location on the screen by snapping or enter

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