Introduction

TopoLT is a program that running under AutoCAD or another CAD platforms. Program TopoLT is useful for those who design topographical or cadastral plans in digital format.

Facilities offered by this program are:

• draws directly to CAD coordinates file, draws coordinates from total station or sends coordinates from drawing to total station directly;
• points text can be optimized so that there would be no overlapping between them or with the other entities placed near the point;
• points code is translated relative to codes interpretation file defined by the user;
• there can be introduced graphical points with or without elevations, elevations can be also obtained by interpolation;
• there can be automatically introduced points for entities (lines, polylines, arcs, etc.) from drawing which don't have points at margins;
• sightshot points (polar points) coordinates can be calculated including the possibility of measurements import from the majority of total stations that are known;
• measurements can be received from an instrument through serial port;
• there can be made selections of points by code or points codes can be modified;
• points coordinates can be extracted from drawing and saved in different formats, including formats defined at instruments (total stations) or in formats defined by user;
• there can be created coordinates tables for selected points, inclusively separated table for station points;
• there can be created 3D model of field and contour levels, volumes can be calculated without any restrictions (volume obtained by intersecting a 3D surface with a plan or volume between two 3D surfaces of any grid form or triangles);
• 3D models can be cut or trimmed;
• 2D entities can be vertically projected on a 3D model to realize section lines;
• entities from a drawing with real time rendering can be visualized three-dimensionally, AVI movies can be saved with moving three-dimensional objects, images can be saved, 3ds files can be visualized, textures can be attached to 3D objects including attachment of images in coordinates for a photo real visualizing of 3D models. Also visualizing is available for functions that create 3D model and volumes calculation;
• raster images can be transformed in order to achieve their correlation with coordinates system of plan, also raster images can both cut and framed at the same time with the process of transformation, raster images can be saved in different formats, colors format can be changed;
• there can be scaled, rotated or deleted punctiform symbols automatically by points codes;
• there can be automatically changed linear symbols (linetypes) relative to codes interpretation file;
• areas can be detached using usual methods from cadastre for detachments such as parallel, parallel to one direction, perpendicular, proportional, through an obliged point and with obliged opening;
• graticule can be automatically drawn;
• numbered plans layouts can be created in order to view or print plan by plan when there are touched plans;
• there can be drawn automatically plan layout with border and cartouche considering printable area of printer and paper format;
• draw polygons, paths or points in Google Earth with the assistance of the TransLT library, another product of our company;
• transform the coordinates of points using TransLT models;
• program configuration was made in order to cover a situations area as large as possible;
• program works in different languages; also, any user in any language can translate this program.