TDPoly = record
x, y: integer;
end;

The lowest 8 Bits are used to mark special points:

Marks for the x-coordinate:
1: this point is the first bezier curve point
2: this point is the second bezier curve point
4: for double lines: there is no left line between this point and the next point
8: this point is a area border line or a virtual line gap

Marks for y-coordinate:
1: this point is a corner point
2: this point is the first point of a hole in an area
4: for double lines: there is no right line between this point and the next point
8: this point is a dash point

The upper 24 bits contain the coordinate value measured in units of 0.01 mm.

Note: all file positions are in bytes starting from the beginning of the file.

File Header

OCAD files start with a file header.

Symbols

Each Symbol Index Block contains the position of the next Symbol Index Block and the file position of 256 symbols.

Base Symbol

The different types of symbols are defined in different structures. There is an abstract type TBaseSym, which contains the fields common to all symbols types. It is used for programming reasons, but does not exist in real OCAD files.

Point Symbol

Point symbols are stored with this structure:

After this structure follow the symbol elements which build that Point symbol. These symbol elements are stored in the following structure. Note that these symbol elements are stored in a different way than ordinary map objects.

If there are several objects, they just follow each other (only the coordinates used are stored). To determine the number of objects the DataSize variable must be used.

Line Symbol

Line symbols are stored in the following structure. In the explanation the terms used in the Line Symbol dialog box are shown.

Area Symbol

Area symbols are stored in the following structure. In the explanation the terms used in the Area Symbol dialog box are shown. The unit of all dimensions is 0.01 mm.

Text Symbol

Text symbols are stored in the following structure. In the explanation the terms used in the Text Symbol dialog box are shown. The unit of all dimensions is 0.01 mm, except for the font sizes which are measured in 0.1 typographical points.

Line Text Symbol

Line Text symbols are stored in the following structure. In the explanation the terms used in the Line Text Symbol dialog box are shown. The unit of all dimensions is 0.01 mm, except for the font sizes which are measured in 0.1 typographical points.

Rectangle Symbol

Rectangle symbols are stored in the following structure. In the explanation the terms used in the Rectangle Symbol dialog box are shown. The unit of all dimensions is 0.01 mm.

Objects

Each Object Index Block contains the position of the next Object Index Block and the file position and other information of 256 objects.

Object Index Block

OCAD Object Index

OCAD Object

Parameter Strings

The Parameter Strings contain all the information about the setup structure, background maps,course setting and database connection.

Similar to the symbols and objects there are String Index Blocks which contain the basic information for 256 Parameter Strings and the file position of the strings.

TStringIndexBlock contains the basic information for 256 strings

TStIndex contains the basic information for 1 string:

StringIndexBlk in the FileHeader points to the first StringIndexBlock.

The strings (null terminated) have the following structure:

• first field: all characters until the first tab (character 9). The first field can be missing (the string starts with a tab).
• tab (character 9)
• code: this is the first character after the tab
• value: all characters until the next tab
• tab
• code
• value
• .

We do whatever it takes to make your maps perfect

OCAD – the powerful Swiss software application for Cartography and Orienteering.

For creating and editing interactive and printed maps such as topographic maps, city maps and orienteering maps.

Available in 17 languages. Successfully used in the cartography, city and surveying offices, universities and orienteering clubs.

OCAD News

Fill Bounded Area Mode

With the newly added Fill Bounded Area Mode, empty areas surrounded by different objects can be filled automatically.

OCAD Sketch Layer

OCAD Sketch Layer and it’s tools are designed to be used for field work with a tablet and a pen.

Discover the strengths of OCAD!

Choose cartography or orienteering by clicking on the respective picture.

Use Existing Geo Data

Use existing and current spatial information data for your base map provided by national survey authorities or Open Street Map (OSM).

Capture and Derive Your Own Spatial Data

Enrich your map by capturing map features yourself using GPS, laser range finder and analyzing digital elevation models (DEM) or LiDAR data.

Create Your Own Map Symbols

Assign your data to own created maps symbols. Use the unique drawing, editing and generalization tools to produce maps for the most demanding requirements in cartography.

Print and Export Your Map

Finalize your map with a layout for printing, export for further digital use or create an interactive web map version.

Multiple Representation

Alter your map features in different representations without affecting your original map. However, if you change the original, the different representations will adopt these changes.

Thematic Mapper

Visualize your statistical data with the Thematic Mapper. A step-by-step wizard assists you to get spatial overview of a specific theme or subject area.

Analyse Laser Scanning Data and Digital Elevation Models

The processing of LiDAR data and Digital Elevation Models is the heart of the OCAD Orienteering edition. Create contour lines, hill shading or vegetation maps in just one single step.

Prepare Existing Geodata for Mapping

In addition to LiDAR and DEM data, import cadastral surveying data, OSM data, display aerial photos or get information from Web Map Services (WMS), Google Maps or Google Street View.

Capture Spatial Data with a Mobile Device

OCAD runs on Tablet PCs. In addition, OCAD has a real-time GPS connection tool and offers a connection to a laser range finder for faster and more precise mapping in the terrain.

Use the Sophisticated Cartographic Drawing and Editing Tools

Benefit from a large number of functions, which makes drawing and editing more easy and accurate. Use the latest International Specification for Orienteering Maps (ISOM) symbol sets for drawing and convert old maps to the new ISOM standards.

Finalize Your Map with a Layout

Finalize your map with a layout layer, which allows you to add peripheral information to a map. Export your map to one of the many formats for printing or further use.

Set Orienteering Courses

OCAD provides completely integrated functions for course setting in orienteering, from simple courses to complex relay projects.

What does the OCAD subscription model offer?

#1 Cutting-Edge Cartography Tools
Due to the regular and free updates of the subscription model, you will immediately benefit from OCAD’s latest cartography tools to streamline your map production. Your OCAD is always up equipped with the latest technology and standards.

#2 Easier planning – Attractive Subscription Prices
With the subscription pricing, the entire product portfolio OCAD offers an easy entry to the latest technology. At a fair price point, you will get the proven quality of OCAD software and support. Moreover, you gain new functionality even faster than before. Details on terms and the pricing can be found in our Frequently Asked Questions (FAQ) here.

#3 Efficient and Carefree Team Work
Thanks to the subscription option “OCAD for Teams” you can transfer your license to others immediately. If you synchronize your OCAD file and installation with a cloud service (e. g. Dropbox, OneDrive etc.) you avoid compatibility problems between different OCAD versions, files and functionality. Everybody involved works with the same and most current version.

#4 Comfortable License Management
With the OCAD License Manager you can create organisations and add team members. This way, you always have an overview of whether and what kind of license your members currently have (subscription team license, subscription single user license, license of earlier OCAD versions). Team licenses can be automatically transferred to a member.

#5 Support by OCAD Experts
Do you have any questions about software or license management? Get technical support from OCAD experts with the subscription model. As an OCAD user, you will have access to numerous tutorial videos and extensive learning aids, such as the OCAD Wiki and tutorials. This allows for the optimal use of OCAD at any time.

#6 OCAD Viewer
The free OCAD Viewer is installed with every OCAD edition. With it you can continue opening and printing your map files even after your subscription period has expired.

OCAD Editions – Cartography and Orienteering

OCAD Trial

Try OCAD Full Version.
Please register to request the free trial version.

Free OCAD Viewer

With the free OCAD Viewer you can use the OCAD files in exactly the same way as the creator of the map has determined.

CONTACT | SUPPORT

OCAD AG
Mühlegasse 36
CH-6340 Baar / Switzerland
Email: info@ocad.com

Tel +41-41-763 18 60

Don’t hesitate contacting us, if you need further information about OCAD.
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