CarSim learning experience - rough translation 1

Carsim Some common functions of - Manual translation

You will use Road: Animator Surface Shapes The screen ( chart 5) To build and arrange the most 50 Visual strip , This will define a for viewing 3D Road surface . You can use this screen to connect or alternate strips to create strips and grids . When you change Road: 3D Surface Data set in the library or click Road: 3D Surface Updates on the screen Road Surface 3D Shape button , The dataset associated with this screen is used to update the visualization . The columns in the bar table are divided into groups .

• first (1-6) Specify how the image repeats the strip .

• The next column (7-12) Appoint L The range of coordinates and the interval used to generate the shape along the road ,

• Column (13-16) Appoint S The range and spacing of coordinates .

• The last column (17 and 18) Specify an incremental lift and a method to add detail to the texture of the image copy .

• Spec Specular value specification ( Luster ). Bright surfaces reflect light in a particular direction , The dim surface reflects light evenly in all directions . The specular value of a surface determines the relative viewing angle , What is the reflection direction of light . High value means the surface is shiny , It's like a mirror . The value is 0 Indicates that the surface is dim .

  All material texture images have built-in design reflection properties , And it is intended that when the highlight value is 1 When using .

• S Scale(S scale ) Texture graphics . When a material image is specified as a strip , Then the image will normally , The road is longer than the image , therefore , The image will be repeated , To fill the shape of the bar , Take the image as a of this length “ ceramic tile ”. for example , The value is 20 Will cause the texture image to repeat every 20 rice . chart 7 It shows the influence of two different values on the longitudinal scale .

  In the next section , It is recommended to use S Scale value

  

• L Tiles Is the number of times the texture image is repeated horizontally . When a material image is assigned as a strip , This value then defines how many times the image will repeat filling the strip in the transverse direction . for example , If the bar chart describes the road surface , The value is 1 It will cause the texture of the road to be stretched to fill the strip ( chart 8).

If L TIles = 0.5, It's only half shown ,=0.25 Show quarter ,=0.1 Show a scale of one tenth

The horizontal dimension of the machine generated polygon

The width of the strip is determined by the horizontal coordinate l Definition of lower and upper limits in . There are two options for specifying the horizontal position :

1. L It can be expressed directly in meters . This mode is the simplest choice , If your banner has a constant width . To use this mode , take Units (8 and 9) Set to m, Pictured 5 All strips in are shown .

2. L It can be determined by identifying edges . This mode allows the strip to vary in width . To use this mode , Put the unit ( and ) Set as figure 10 Edges of all bars in , And refer to the following sections

Direct designation L

When defining a strip with constant width , Width can be simply by starting and stopping L Value to define .

• L Start.L Start . If L Start The unit of is set to m, Then this value defines L A boundary value of .

• L Stop. If L Stop The unit of is set to m, Then this value defines L The boundary value of . The strip will cover L Start To L Stop The scope of the .L Stop Is it greater than L Start Not important , Because the software will reverse these values when necessary . however ,L Stop Can not be equal to L Start.

Use edges to specify L

When defining a strip with variable width , You can use edges to specify horizontal boundaries . for example , chart 9 Shows a highway exit highway , It starts with a driveway , Then widen two lanes . The concrete Lane on the right is full width at the beginning ( Can't see in the picture ) chart ), Finally, it shrinks to almost nothing . This is the same road surface shown ( chart 2, The first 3 page ), But stripping - under these circumstances , There is only a basic geometric description of the road .

The number and usage of divisions

In addition to defining the boundary of the strip , You can also customize the level of detail in the strip geometry , And use Div and Use Parameter to create alternate mode .

• Div , The number of segments in the horizontal (Div). Each bar consists of a series of triangles , They pair to create rectangles ( chart 4, The first 4 page ). By default , A single rectangle will cover the horizontal range of the bar . If the bar has a significant lateral height change , This area allows you to add additional sub areas , To add more detail to the geometry ( chart 12). However , More subdivision means that the shape file will be larger , Loading time will also be longer . If not specified , The size of a single rectangle will be set to match the strip width . In the first example ( chart 5, The first 5 page ) in , Table No 2 Row specifies additional partitions , To show the curb in detail ( chart 3 Sum graph 4).

div = 121

div = 1

• Use, Skip counter horizontally ( Use ), Allow skipping some partitions . If not specified , The application of 1 Count of , Indicates that each strip division is displayed . Count as 2 Means every division , Count as 3 Means every third , And so on . This option is included to effectively generate checkerboard or stripe patterns ( chart 13). It can be used to draw zebra crossing .

• dS, Longitudinal spacing dS. This is related to Div The parameters are similar to , But for length , It allows you to define the interval for generating new rectangles within the longitudinal range of the strip . If the road is straight , The interval can be as large as the coverage (S Stop S Start). For roads with curves or vertical changes , The interval should be short enough , To show the change of surface shape ( chart 14). Please note that , The smaller the interval , The larger the shape file , The longer the loading time . If not specified , Then use 2m The default value of .

• Use, Horizontal skip counter use , Allow skipping some partitions . If not specified , Then apply a 1 Count of , Indicates that each dS The incremental . Count as 2 Indicates that it is displayed once every second , Count as 3 Indicates that it is displayed once every three times , And so on ( chart 15). This option is included to effectively generate checkerboard or stripe patterns .