Frequently Asked Questions

I need help.

Registered users can get support during normal Pacific Time business hours by contacting us.

How many pixels can my heightfields have?

A reasonable upper limit is about 6,000 x 6,000 pixels. Some users have gone up to 9,000 x 9,000. As you can imagine, this takes a lot of RAM and it helps to have the fastest hardware possible and to delve more into the software's render settings.

Simply multiplying the heightfield's dimensions by four bytes per pixel won't give you a RAM requirement, because the software must maintain Undo buffers, selection masks, normal maps, various caches, etc.

If you are using a 64-bit version of the software, the upper limit is increased to 12,000 x 12,000.

Why do exported images look weird?

You've exported the heightfield file using more than eight bits per pixel to a bitmap format such as BMP or TGA. Since the document is a heightfield, the software assumes that you want to export elevation data. The pixels, when interpreted as colors, look like the picture on the right:

This is normal. POV-Ray's red/green color channel interpretation to store elevations, since there is no standard grayscale format for pixel depths over eight bits per pixel. If you're in a hurry and just want to get a traditional 8-bpp grayscale image, extract the image's red channel.

If you want to export how the displayed heightfield looks on the screen (i.e., the picture on the left) use the "Map to Bitmap" or "Scene to Bitmap" export commands.

Why not just use something from all the free stuff available?

It's possible to cobble together some kind of solution from the vast amount of free stuff out there. But our software provides a lot of it under one consistent, well-developed, and easy-to-use roof.

Unlike most freeware, Leveller's user interface is an integral component and has been carefully implemented for strong ease of use. We don't write mostly engine-level code and put it up for people to wrangle with -- we provide a more complete solution that is based on user input, installs easily, is tested and well documented, and gets you quickly moving forward. And as a registered user, you'll enjoy vendor-level support, update benefits, fast issue resolution, not being told to RTFM, and the confidence of using something that is actively maintained. If you're serious about terrain/heightfield modeling, then Leveller is a good investment.

What is the difference between Landshaper Golf and Leveller?

Landshaper Golf has hole routings, which are specialized vector shapes that help plot fairways. Also, the Base Shaping facility is ommitted in Landshaper Golf since it is not required there and helps simplify the user interface.

Are there student discounts, corporate, multi-user and/or site licences available?

We don't have a specific student discount plan, but we do provide site licencing using a discount rate of five percent per unit.

To arrange a bulk order, please contact us.

How do I get an update?

Major updates (e.g. version 3.x to 4.x) are treated as new sales, so you can just use the regular Order page.

Minor updates (e.g., version 4.0 to 4.1) are free. Contact us via email. In the message body, provide your name and the email address you used when ordering Leveller. If your email address has changed, your new one will be used to update our customer database. Your licence code may be requested.

Can I licence or update without a credit card?

Yes. Mail a money order, bank draft, or certified cheque to:

Daylon Graphics Ltd.
P.O. Box 21055
Maple Ridge, BC
Canada V2X 1P7

Please include your name, return address, e-mail address, and computer name. You can also include your organization and department name if you want them to appear in the software. If ordering multiple licenses or upgrades, you are eligible for a discount. Product shipping is done via HTTP download.

Is the software available on CD-ROM or in a physical package?

One-off CD-ROMs (jewel case only) are available upon request for users without adequate Net access or who simply prefer physical media. The fee is $20 USD to cover burning and shipping.

An official boxed package is unlikely.

Are there any retail store dealers for the software? Are dealer inquires welcome?

Our resellers are listed on our Order page.

There are no retail store dealers available for our software at this time, since we have no physical media distribution. If that changes, dealer inquiries are certainly welcome.

Inquiries for electronic dealers are welcome for sites that do not operate merely as huge lists of freeware/shareware titles. No offense, but we prefer not to associate our products with such offerings.

Can I drape textures over heightfields?

Yes. Use the Edit, Texture... command, or drag a picture file and drop it onto the 3D scene pane. Textures can be offset, scaled, rotated, and tiled, or auto-placed if they and your heightfield are georeferenced. The texture can be blended with the underlying colormap. The water level's finite plane can also be textured.

Texture data is exported (as much as possible) to POV-Ray, RIB/BMRT, VRML and Polyray.

Alpha channels are supported, and textures are bilinearly filtered. If a texture bitmap does not have color data, its data bands can be mapped to color channels to visualize temperatures, gravimetrics, etc.

If you want to use multiple transformed textures (i.e., texture splats), add images to the Image Library, then add imagemap textures to the Texture library that use the images, and apply said textures to vector shapes.

Can I place 3D objects onto my heightfields?

Yes. Add entries to the Filler library, and then apply fillers to vector shapes. You can also use reference shapes, but they are limited to simpler billboards.

Can I use a graphics tablet or a Tablet PC with the software?

Yes. Our programs support any digitizing device that supports the WinTab standard (e.g., Wacom Intuos).

If your Tablet PC is not recognized as a tablet device, but uses a Wacom digitizer, you can try installing the Wacom Pen driver for Tablet PC. This will make your Tablet PC offer WinTab interfaces to applications and also forwards pressure sensitivity data.

Also supported are stylus eraser and pressure sensitivity. Stylus tilt is not used but the data is forwarded to tool plug-ins.

Can I use shapefiles?

Yes. Our programs can import shapefiles supported by the GDAL OGR library, such as ESRI shapefile, DXF, etc. There is also a built-in Adobe Illustrator import. Exports to shapefiles include DXF, Illustrator, and SVG.

What is XaoS?

Daylon XaoS is our Leveller-friendly fractal imaging program, based on the Win32 port of the open source XaoS project. It is a free download from our Resources page.

Is the software multithreaded?

Yes. In particular, these operations are multithreaded:

Is there a mailing list available?

You can join the Leveller mailing list (moderated) by clicking here. You can unsubscribe from it by clicking here. The list is hosted by The old list hosted by YahooGroups is no longer used.

Messages posted to the list will be sent to your e-mail address. To keep them from cluttering your inbox, we suggest setting up a separate folder, and adding a filter that directs the messages to it. If you're using Outlook Express, you can do this by choosing File, Folder, New Folder... to create the folder, and then Tools, Inbox Assistant... to add the filter. The filter should look for subject lines containing the text "[leveller]".