FAQ

Element Area parameters

Element Areas allows you to create areas filled with certain elements for example humans.

Element Areas read AutoCAD polylines, arcs, circles,  ellipses, splines or 3D faces. Defined area is filled with single elements based on the parameters.

Parameters

layer  - Layer where element area border polylines are.

materials  - Materials for elements, probability (0-1) of the element is separated with a semicolon ";" after the material name. This way amount of different elements can be defined accurately.

description  - A descriptive text for the entry. If defined, will be shown instead of the long description.

info text  - Information text attached to items.

info URL  - URL link attached to items. The Explorer can launch a Web browser with the URL.

object data tables  - Autodesk Map object data tables that will be used for source of object information for the elements in the virtual model. The table list also matches wildcards.

objects  - List of the AutoCAD 3D blocks that will be used as elements in the virtual model the same way as texture elements. If more than one block is selected, one of them will be randomly chosen for each instance. Insertion point is always interpolated to the ground. Material information is read from the AutoCAD block (mesh) triangle materials. Texturing mode is always “Box”.

var_place  - Randomness in position in system units. Has effect only when randpattern is set to YES.

var_size  - Randomness in size in percentage.

densityx  - Distance of elements in X direction in drawing units.

densityy  - Distance of elements in Y direction in drawing units.

rotation  - Rotation of distribution pattern.

randpattern  - If set to YES the program uses its own random generator to place the trees. In this case rotation parameter has no effect and density is defined only with densityx as number of elements in a hectare. If set to NO elements are placed into rectangular grid which you can affect with rotation parameter. In this case  density is defined with both denstiyx and densityy parameters.

rotating  - If set to YES elements are always faced to the viewer.

elemwidth  - Width of single elements. If left empty width of the material or the objects is used.

elemheight  - Height of single elements. If left empty height of the material or the objects is used.

polylines  - If set to YES polylines are used. This means that polylines of the concerned  layer are used to generate element areas.

triangles  - If set to YES 3D faces are used.  This means that 3D faces on the coincerned layer are used to generate element areas.

negate  - If set to YES this element area will remove elements inside the polylines / triangles instead of creat-ing them. It will apply to the elements defined as materials (unless none is defined - then all elements inside the polylines / triangles are deleted.)

background_material  - Material for element's background. If this material does not have texture the alpha channel of the front material is used.

interpolate_z_from_poly  - The z value of the elements are taken from the z value of the polyline.

interpolation_mode  - top – Element stretches from the ground. Top of the element is set to the polyline elevation.\\ bottom - Element height is read from the  ‘height’ parameter (default setting).

interpolate_to_materials  - In case of multiple materials on top of each other, defines the material that these items will be interpolated on.

position_offset  - Shifts objects according to given transformation parameters (X,Y,Z).

group  - The name of the group of these items.

z-rotating  - Yes/no

z-rotation  - Angle = Rotates the resulting object’s z-axis. With this parameter objects can be rotated so that they are not pointing upwards. Setting this to 90 will result objects that are horizontal.

buffer  - Expand the element area outwards (positive value) or shrink inwards (negative value).

area_around_points  - Creates a circular element area around each points on this layer. Radius of the area is defined by the buffer parameter. With this parameter it is possible to use points as element areas. With negative parameter it is possible to remove elements around points.

area_along_lines  - Creates an element area around the polylines on this layer. Area size is defined by the buffer parameter. With this parameter it is possible to use lines and non-closed polylines as element areas. With negative parameter it is possible to remove elements around polylines (like remove trees from road-lines). If this value is set, all polylines are handled as non-closed polylines and area is created around the polyline and not as normal polyline element area.

alignment  

  • default = Objects are aligned vertically as usually
  • surface = Objects are aligned so that they follow surface shape. Texture elements are aligned perpendicular against surface triangle. 3D-Objects are aligned to surface using object dimensions (bounding box) and lowest points.