This page updated: October, 2002
Version 1.2 at winsite as
dtm12.zip includes source code
DTM Digital Terrain Mapping
- The relation between this (DTM) - Fractal 3D - and SOS MAP is continually changing, however there is an overlap in the programs functionality. Fractal 3D creates fractal landscapes and sundry other images-objects... DTM is a data importer-compressor-previewer. Digital Elevation Models (DEM) provide a base for surficial overviews of natural resource data, actual 3D views would entail geological depth. DTM has gridlines, 3D objects per .shp file data, and so the overlap into SOS MAP coordinate conversion. [Ctrl] Left clicking on a displayed HTF will launch a 3D GL viewer of that Single tile; [Shift] Left displays a 3D view of all tiles on the screen; [Alt] Left autosaves a snapshot of the screen. See the programs Help for detailed information on functionality, procedures and processes.

- DTM Menu: File View Tools Help
- File: Open DT Project, Open HTF, Open Shape, Open Base Image; Save dtProject; Program Options, Set Ecotype Colors; HTF Pack, Dem Db List, Image Maker; Exit
- These all open another form to further process data.
- Open DT Project: select a .dtp file to load (loads all files in project at once).
- Open HTF: select a .htf file to load.
- Open Shape: load a .shp file to overlay on the HTF.
- Open Base Image: load an Image file to overlay on the HTF and under any shape files.
- ------------>Reopen file list
- Save dtProject: Save the .dtp Project file.
- Options: Program and data directories, HTF Palette utility, Contour density, Slope Direction.
- Set Ecotype Colors: Set the Colors and data attributes.
- HTF Pack: Process Digital Elevation Model (DEM) data into compressed data files. Process DEM data into .bits and .tpcfg files for HTF processing. Make Projection .vrp files for Htf's, Images, bits and other uses. RIF: Process Raster Image data into compressed data files....rif and .ipcfg files
- Dem Db List: Process database of DEM file data into .shp, .tpcfg files. Used for tracking-automating DEM processing into .bit files.
- Image Maker: Convert images into grayscale bmp's, or HTF files into color bmp's, or either into reduced size subsets of the image or HTF. Display result as a 3D GL heightfield. Given a 24 bit image count all the pixels and make a .rs3 file for use in 3D RGB Cube viewer.
- View: HTF Grid, LatLong Grid; Redraw; Elevation Tint, Slope Tint (s), Contour Line (s), LOS Masked Area; Ecotype Colors; Line Of Sight
- --------(both can be on but confusing)----
- HTF Grid: Toggle the grid display
- LatLong Grid: Toggle the grid display
- Redraw: Redraw the display
- --------(one at a time)----
- Elevation Tint: Display elevations as color ranges
- Slope Tint: Display (North) slopes as red
- Slope Directional: multicolor Slope Direction variation.
- Slope (Set) Direction: 1 Direction color.
- Slope Percent: Color per angle.
- Contour Lines: Display contours as color lines
- Contour Lines All: variation.
- 7 Contour Lines: 7 statistical ranges.
- LOS Masked Area: Selecting the Central point will display the areas of visibility around that point
- Ecotype Colors: Evaluates Elevation, Slope per choices on Ecotype Colors form to determine the Ecoptype and assign the color.
- Line Of Sight: Starts the process of selecting 2 points From..To for the display of the Line of Sight (selected view displayed on another form) (from... Pixel Profile, efg, September 1998, www.efg2.com/lab).
- Tools: HTF Nav Map, Shape Legend; Rag Doll, GLSViewer, Pana Viewer, 3D RGB Cubes, 3D RGB Dots; Set Joystick; RIF Image Viewer
- HTF Nav Map: Select the area to view from a reduced image of the HTF.
- Shape Legend: Select the color per layer, adjust the coordinate range of the HTF, Select 3D object per shape file.
- Rag Doll: .qc file animations ... and .md2 data viewer. (by MRQZZZ)
- GLSViewer: view 3D files (3DS, OBJ, TIN, PLY, STL, md2, smd, qc, ots) and textures: Lischke's Graphex 9 for most of the Graphic file formats
. This is Eric's GLSViewer... to be the Shape Object Legend interface.
- 3D RGB Cubes: View layers of the 3d RGB pixels and select a cube to view number of pixels of that R,G,B value.
- 3D RGB Dots: View all 3d RGB pixel layers at the same time... no pixel value information
- Set Joystick: Set Threshold and Interval. Press top button to capture Centroid coordintates if Joystick spring has sprung. Press bottom button to reset Joystick parameters. (Set Joystick or use it in 3D GL viewer per program startup... Once captured the Joystick messages go to that form...)
- RIF Image Viewer: View .rif and .ipcfg files using selected bands as RGB pixels
- Help... Contents, On Help, Me, About
- A drop down Palette loader is available on the toolbar. The toolbar icons are Open, Exit, HTF Grid, LatLong Grid, Palette, and Navigator. A Hint box area displays status, etc...
- The 3D GL viewers are imitations/combinations of GL Scene demos: (Landscape Demo By René Lindsay), (ArcInfo Grid Texturing - Kapiti by Phil Scadden), (Eric Grange - many demos), (Carlos Arteaga Rivero : Actor and Object loading) et al.
Images and Data Information
overall DEM note is the same text attached to world image below: Etopo5 dem Data Information.
DEM data sources and ideas ~ todo list
.tpcfg Read Me file
.tpcfg file howto
Map Projection parameters another way
Map Projection parameters another way
Map Projection parameters
Map Projection input ranges

Copyright
© 1991..2002 by Ivan Lee Herring