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Text File | 1995-11-21 | 3.3 KB | 75 lines | [TEXT/ttxt] |
- What: "virtual" circling around through the clouds
-
- Hot points:
- - simple virtual reality "thing", of a flight-simulator kind
- - with the complete source and lots of comments/explanations
- - can take any height map and flight/pan around it
- - NO QuickDraw3D, all rendering/graphics is done by the code itself
- - includes the source for a small class library to handle full-color
- Mac windows/user items /offscreen GrafWorlds
- - C++ classes for Dialogs and dialog (user) items; consistent OO
- design with late binding
- - on-the-fly "patching" of CDEF without even touching the trap table, or
- any of the system code
- - animation NOT through null-events
-
- Keywords: voxel 3D rendering, visualization, animation, elevation map, panning
-
- Contents:
- Readme - this file
- New Venus - application itself (PowerMac)
- Venus.mu - project to build it
- Venus.mu.rsrc - 'clut', pltt, dialog and control resources
- main.cc - Where the main dialog class is declared and implemented
- view_3d.cc - render a clouds map in 3D and make a view from the
- cockpit
- view_2d.cc - make a 'view-from-above' and do circling around
- ValueControl.* - C++ class for a slider displaying its
- current setting
- window.h \
- SimpleWindow.cc \ my own very simple "MacApp": a classlib for
- Dialog.* / handling color Mac windows and offscreen GrafWorlds
- EventHandlers.* /
- The source code contains many comments to show what
- a particular piece of code does, as well as some tricks involved
-
- Language: CodeWarrior C++ 7.1
- System: System 7.x; binaries are for a PowerMac.
-
- Note: Some ancillary code is provided in a binary form (as compiled libraries)
- for compactness. The corresponding source code can be grabbed from
- the Info-Mac (/info-mac/dev/lib/gray-image-21-cpp.hqx) or
- ftp://replicant.csci.unt.edu/~oleg/ftp/grayimage-21.cpt.hqx
- See http://mozart.compsci.com/~oleg/ftp/
- for more details.
-
- Comments-to: oleg@ponder.csci.unt.edu, oleg@unt.edu
- Many-Thanks-To: Tim Clarke, tjc1005@hermes.cam.ac.uk (for inspiration)
-
- Explanation:
-
- Just fire it up, click on "Go", sit back and enjoy. You may want to adjust
- elevation, view position, focus, etc. gauges. Hope you'll get some
- feeling that you're hovering over or flying through the clouds. If you
- quit the program and start it over again, you'll get different clouds
- (which might be much better and more interesting to fly around).
-
- Right window: a view from above, on the clouds and your plane. Left
- window: a view from the cockpit. The picture changes as you circle around
- or alter the view parameters: focus, elevation, etc.
-
- The thing flies faster on 24-bit monitors (with Direct color), where
- CopyBits() doesn't need to do color matching.
-
- Sorry about ugly controls: I can't draw at all. Otherwise, I would've
- drawn my own sliders, rather than ripping and tinkering with system's CDEFs.
-
- Source file view_3d.cc in the present submission contains the
- fullest description (I could come up with) of the 3D rendering
- technique: with background, equations, pseudocode and the actual code
- (and tricks with the fixed-point arithmetics: hey, no floating-point
- numbers are in here).
-
- If you need further information or details, please mail me. If you want to see more
- functionality added, mail me too.
-