Added standard UNIX package files.
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|||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Everyone is permitted to copy and distribute verbatim copies
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Preamble
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The licenses for most software are designed to take away your
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License is intended to guarantee your freedom to share and change free
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When we speak of free software, we are referring to freedom, not
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GNU GENERAL PUBLIC LICENSE
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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@ -0,0 +1,151 @@
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Celestia Revision History
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-------------------------
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1.00
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* Initial public release
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1.01
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* Added more realistic and aesthetically pleasing ring illumination function
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* Made planets project shadows onto their rings (requires multitexturing)
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* Detect and use ARB_multitexture extension
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* Some configuration parameters now read from a file
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* Support for multiple solar system catalog files
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* Split solar system files into solarsys.ssc and extrasolar.ssc
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* Added Help/License menu
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* Added simple camera orbit mode
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* Fixed up parsing and printing of catalog numbers--still kludgy though
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1.02
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* Made Celestia icon appear in corner of window. Whee.
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* Fixed an extremely subtle numerical precision bug which manifested itself in
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a number of ways: jittering when following small objects, incorrect
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targeting of small objects with goto, occasional flashes when closely
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approaching an object, and probably other things as well.
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* Reversed rotation directions when orbiting--it's much more intuitive now
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* Added an exponential dolly capability to the camera
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* Double-clicking will now center on the selected object
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* Fixed bug in elliptical orbit calculation
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* When orbits are displayed, the Orbit for the selected object is highlighted
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* Incorporated Scott Hudson's asteroid geometry data for Toutatis, Kleopatra,
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and Geographos.
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* Fixed problems with disappearing labels and with misplaced labels for
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extrasolar planets
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* Eliminated 'sticking' when mouse buttons released outside of Celestia window
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* Added Real Time option to Time menu
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* Reversed planet rotation direction so it's correct. Oops.
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* Added about a dozen extrasolar systems from Jean Schneider's catalog
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* Create two new textures for extrasolar planets
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* Moved Selection class outside of Simulation, as it's generally useful
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1.03
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* Rotating the camera is now more responsive to mouse movement
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* 'Infinite mouse' hack allows rotating and dollying without having to pick up
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the mouse and reposition the cursor in the window
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* Fixed z ordering for planets and satellites so small that they only appear
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as points. Small satellites will no longer get obscured by planets they're
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in front of.
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* Apparent magnitude calculation for planets now takes into account phase
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* At close range, stars are now rendered as textured sphere meshes.
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* Choosing stars by catalog number no longer selects a star even when the specified
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star doesn't exist.
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* Added labels for stars; the list of labelled stars is read from celestia.cfg
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* Cleaned up vecmath.h, added consts and reference parameters where appropriate
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* Cleaned up StarNameDatabase
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1.04
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* Start out at the moon instead of in deep space
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* Made picking of planets work properly for planets with disc sizes greater than one
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pixel.
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* Added call to glDeleteTextures to Texture class destructor
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* Added bump mapping. Uses DOT3 bump mapping and only works on GeForce cards
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right now.
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* Enabled user control of per-pixel lighting.
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* Menu checked state for label options synced with renderer state.
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* Added a context menu that appears when an object is right clicked.
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* Celestia now uses texture coordinates from 3DS files
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* Added 3DS model of Eros based on NEAR laser rangefinder data
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* Added 3DS models of Deimos, Phobos, and numerous other asteroids and
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small moons based on Phil Stooke's models
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* Replaced TriangleList class with much more flexible VertexList
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* Introduced support for compressed textures; texture compression is specified
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on a per texture basis in .ssc files.
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* Added a reverse time option
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* Added an OpenGL Driver Info item to the help menu
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1.05
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* Made per-pixel lighting work for planets without bump maps too
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* Allow user control of magnitude of faintest visible stars
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* Added support for PNG textures
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* Improved console: enabled backspace, relocated text entry, code cleanup, ...
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* Corrected star positions by converting them from equatorial to ecliptical
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coordinates.
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* Eliminated case sensitivity when selecting objects by name
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* New ring texture for Saturn with separate reflectance and opacity
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* Ring textures now specified in .ssc files instead of hardcoded
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* Implemented date/time selector dialog box
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* Changed the mouse wheel function from zoom to dolly. Zoom is now controlled by
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shift left-dragging the mouse. For mice without wheels, control left-dragging
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will dolly.
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* Fixed orbit and dolly functions to work in follow mode
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* Improved rendering of objects at close range: less clipping, extra sphere LOD.
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* Fixed bug that caused irregular objects to be displayed at half their actual size
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* ESC now cancels goto and follow instead of exiting app.
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* Fixed orbital calculations for planets so their positions are now closer to
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reality.
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* Completed extrasolar planets database; it now contains all known planets
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around normal stars
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* Mir!
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* MeanAnomaly field in .ssc files was incorrectly called TrueAnomaly; this
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is fixed, and solar system parser now also accepts MeanLongitude in orbital
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elements section.
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* Epoch can now be specified for orbital elements. Default is J2000.
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1.06
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* Made Alt+F4 exit the app.
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* Fixed text rendering to be pixel-accurate; labels and console text are now
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crisper and don't have any missing pixels (need to test on more graphics
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chipsets.)
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* Updated parser to handle negative numbers. Big oops.
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* Corrected errors and omissions in extrasolar planets catalog.
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* Added locations menu for saving and recalling favorite places.
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* Added intro message.
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* Removed stars without spectral class info from database.
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* Included support for cloud maps
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* Added extrasolar planets from the ESO's April 4th announcement
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* Axial rotation for stars
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* Alleviated clipping of very distant stars (Deneb was missing from Earth's
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sky due to this bug.)
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* Increased depth buffer precision for planet rendering--this should improve
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||||
the quality of rendering with 16-bit z buffers
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* Added option to render constellation diagrams
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* Use strips instead of lists for rendering spheres
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* Enabled keyboard control of zoom with home and end
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* Implemented basics of linear scripting system
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* Run a script at startup; the script filename can be set in the config file
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Code revisions:
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* Converted Simulation class to use Julian days instead of seconds as internal
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time units.
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* Eliminated brain damaged observer methods in Simulation
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* Cleaned up Console class
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1.07
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* More corrections to planetary orbital calculations
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* Accept LongOfPericenter as well ArgOfPericenter in solar system catalog files
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* Updated parser to accept C-style string escapes
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* Render the Milky Way and other galaxies
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* Added more constellations
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* Display constellation names
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||||
* Cleaned up render menu
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||||
* Added FPS counter
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||||
* Implemented basic WWW info feature for planets and stars
|
||||
* New script commands: renderflags, labels, orbit
|
||||
* Implemented a scripted demo mode
|
||||
* Placed ISS in Earth orbit
|
|
@ -0,0 +1,219 @@
|
|||
Celestia: A real-time visual space simulation
|
||||
|
||||
Copyright (C) 2001, Chris Laurel <claurel@shatters.net>
|
||||
|
||||
--
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; either version 2
|
||||
of the License, or (at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||||
USA.
|
||||
|
||||
--
|
||||
|
||||
Getting started:
|
||||
|
||||
Important: Celestia must be started from the directory in which the EXE
|
||||
resides or else it will not find its data files. A real installer is
|
||||
forthcoming.
|
||||
|
||||
Celestia will start up in a window, and if everything is working
|
||||
correctly, you'll see the asteroid Eros moving past a field of
|
||||
stars. In the left corner is a welcome message and some information
|
||||
about your target (Eros), your speed, and the current time (Universal
|
||||
Time, so it'll probably be a few hours off from your computer's clock.)
|
||||
Right drag the mouse to orbit Eros and you should see the Earth and some
|
||||
familiar constellations. Left dragging the mouse changes your
|
||||
orientation too, but the camera rotates about its center instead of
|
||||
rotating around Eros. Rolling the mouse wheel will change your distance
|
||||
to the space station--you can move light years away, then roll the wheel
|
||||
in the opposite direction to get back to your starting location. If your
|
||||
mouse lacks a wheel, you can use the Home and End keys instead.
|
||||
|
||||
In Celestia, you'll generally have an object selected; currently,
|
||||
it's Eros, but it could also be a star, planet, spacecraft, or galaxy.
|
||||
The simplest way to select an object is to click on it. Try clicking
|
||||
on a star to select it. The information about Eros is replaced with
|
||||
some details about the star. Press G (or use the navigation menu),
|
||||
and you'll zoom through space toward the selected star. If you
|
||||
press G again, you'll approach the star even closer.
|
||||
|
||||
Press H to select our Sun, and then G to go back to our solar system.
|
||||
You'll find yourself half a light year away from the sun, which looks
|
||||
merely like a bright star at this range. Press G three more times to
|
||||
get within about 30 AU of the sun and you will be to see a few become
|
||||
visible near the sun. Right click on the sun to bring up a menu of
|
||||
planets and other objects in the solar system. After selecting a planet
|
||||
from the menu, hit G again to travel toward it. Once there, hold down
|
||||
the right mouse button and drag to orbit the planet.
|
||||
|
||||
That covers the very basics . . .
|
||||
|
||||
|
||||
MOUSE FUNCTIONS:
|
||||
|
||||
Left drag to orient camera
|
||||
Right drag to orbit the selected object
|
||||
Use the mouse wheel to adjust distance to selection
|
||||
(for wheelless mice, dragging while holding left and right
|
||||
buttons or left dragfing while holding control to dolly camera
|
||||
will adjust distance)
|
||||
Left drag while holding shift to zoom
|
||||
Click the wheel to reset the field of view to 45 degrees
|
||||
Left-click to select; double click to center selection
|
||||
Right-click to bring up planets menu
|
||||
|
||||
KEYBOARD COMMANDS
|
||||
|
||||
Navigation:
|
||||
H : Select the sun (Home)
|
||||
C : Center on selected object
|
||||
G : Goto selected object
|
||||
F : Follow selected object
|
||||
ESC: Cancel motion
|
||||
|
||||
Free movement:
|
||||
HOME : Move closer to object
|
||||
END : Move farther from object
|
||||
F1 : Stop
|
||||
F2 : Set velocity to 1 km/s
|
||||
F3 : Set velocity to 1,000 km/s
|
||||
F4 : Set velocity to 1,000,000 km/s
|
||||
F5 : Set velocity to 1 AU/s
|
||||
F6 : Set velocity to 1 ly/s
|
||||
A : Increase velocity by 10x
|
||||
Z : Decrease velocity by 10x
|
||||
Q : Reverse direction
|
||||
X : Set movement direction toward center of screen
|
||||
|
||||
Time:
|
||||
Space : stop time
|
||||
L : Time 10x faster
|
||||
K : Time 10x slower
|
||||
J : Reverse time
|
||||
|
||||
Options:
|
||||
U : Toggle galaxy rendering
|
||||
N : Toggle planet and moon labels
|
||||
O : Toggle planet orbits
|
||||
V : Toggle HUD Text
|
||||
I : Toggle planet atmospheres (cloud textures)
|
||||
W : Toggle wireframe mode
|
||||
/ : Toggle constellation diagrams
|
||||
= : Toggle constellation labels
|
||||
B : Toggle star labels
|
||||
P : Toggle per-pixel lighting (if supported)
|
||||
[ : Decrease limiting magnitude (fewer stars visible)
|
||||
] : Increase limiting magnitude (more stars visible)
|
||||
|
||||
Other:
|
||||
D : Run demo
|
||||
` : Show frames rendered per second
|
||||
|
||||
It's possible to choose a star or planet by name. There are two ways to
|
||||
enter a star name: choose 'Select Object' from the Navigation menu to
|
||||
bring up a dialog box, or by hitting Enter, typing in the name, and
|
||||
pressing Enter again. You can use common names, or Bayer designations
|
||||
and HD catalog numbers for stars. Bayer and Flamsteed designations need
|
||||
to be entered like this:
|
||||
Upsilon And
|
||||
51 Peg
|
||||
The constellation must be given as a three letter abbreviation and the
|
||||
full Greek letter name spelled out. Irritating, but it'll be fixed.
|
||||
HD catalog numbers must be entered with a space between HD and the number.
|
||||
|
||||
Celestia handles star catalog numbers in a slightly kludgy way. To keep the
|
||||
star database size to minimum, only one catalog number is stored. Normally,
|
||||
this will a number from the HD catalog, but if a star isn't in the HD catalog
|
||||
the number from another catalog will be used instead. Currently, the secondary
|
||||
catalog is always the HIPPARCOS data set, for which the prefix "HIP" should be
|
||||
used.
|
||||
|
||||
|
||||
Basic Hacking Tips:
|
||||
|
||||
It's possible to modify the solarsys.ssc, stars.dat, and hdnames.dat
|
||||
files to create an entirely fictional universe.
|
||||
|
||||
The easiest file to modify is the solar system catalog, as it's a text
|
||||
file and the format is very text-editor friendly since that's how I
|
||||
had to enter all the data. It's also quite verbose, but that's not a
|
||||
problem yet.
|
||||
|
||||
The units used for the solar system data may not be obvious. All
|
||||
angle fields in the catalog are in degrees. For planets, the period
|
||||
is specified in earth years, and the semi-major axis in AU; for
|
||||
satellites, days and kilometers are used instead.
|
||||
|
||||
All solar system textures should be placed in the textures
|
||||
subdirectory. Currently, JPEG and BMP are the only formats supported.
|
||||
Models belong in the models directory. Celestia can read 3DS models,
|
||||
as well as a custom format (.cms files, used right now just for rough
|
||||
fractal displacement map likenesses of asteroids and small moons.) 3DS
|
||||
meshes are normalized to fit within a unit cube--the Radius field
|
||||
determines how big they appear within Celestia.
|
||||
|
||||
The stars.dat file is a binary database of stars, processed from
|
||||
the 50+ meg HIPPARCOS data set. The first four bytes are an int
|
||||
containing the number of stars in the database. Following that
|
||||
are a bunch of records of this form:
|
||||
|
||||
4 byte int : catalog number
|
||||
4 byte float : right ascension
|
||||
4 byte float : declination
|
||||
4 byte float : parallax
|
||||
2 byte int : apparent magnitude
|
||||
2 byte int : stellar class
|
||||
1 byte : parallax error
|
||||
|
||||
RA, declination, and parallax are converted to x, y, z coordinates
|
||||
and apparent magnitude is converted to absolute magnitude when the
|
||||
database is read.
|
||||
|
||||
|
||||
Credits and Copyrights:
|
||||
|
||||
Most of the planet maps are from David Seal's site: http://maps.jpl.nasa.gov/.
|
||||
A few of these maps were modified by me, with fictional terrain added
|
||||
to fill in gaps. The model of the Galileo spacecraft is also from
|
||||
David Seal's site (though it was converter from Inventor to 3DS format.)
|
||||
|
||||
The Mars, Moon, and Pluto textures and bump maps are all from James
|
||||
Hastings-Trew's collection. Some of the prettiest planet maps around
|
||||
are at http://apollo.spaceports.com/~jhasting/
|
||||
|
||||
The Venus, Saturn, and Saturn's rings textures are from Bjorn Jonsson.
|
||||
His site is http://www.mmedia.is/~bjj/ and is an excellent resource
|
||||
for solar system rendering.
|
||||
|
||||
3D asteroid models of Toutatis, Kleopatra, and Geographos are courtesy of
|
||||
Scott Hudson, Washington State University. His site is:
|
||||
http://www.eecs.wsu.edu/~hudson/Research/Asteroids/4179/index.html
|
||||
|
||||
3D models of Phobos, Deimos, Amalthea, Proteus, Vesta, Ida,
|
||||
Mathilde, and Gaspra are derived from Phil Stooke's Cartography of
|
||||
Non-Spherical Worlds: http://publish.uwo.ca/~pjstooke/plancart.htm
|
||||
|
||||
The texture font library I use for displaying text in OpenGL is
|
||||
copyright Mark Kilgard.
|
||||
|
||||
The Intel JPEG library (ijl10.dll) is copyright Intel Corp.
|
||||
|
||||
The star database (stars.dat) was derived from the HIPPARCOS data set.
|
||||
|
||||
|
||||
Chris Laurel
|
||||
claurel@shatters.net
|
||||
http://www.shatters.net/~claurel
|
||||
and
|
||||
http://www.shatters.net/celestia/
|
|
@ -221,9 +221,6 @@ static void AddFavorite(string name)
|
|||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
void CancelScript()
|
||||
{
|
||||
if (runningScript != NULL)
|
||||
|
@ -442,6 +439,14 @@ void Idle(void)
|
|||
double lastTime = currentTime;
|
||||
currentTime = timer->getTime();
|
||||
double dt = currentTime - lastTime;
|
||||
|
||||
if (runningScript != NULL)
|
||||
{
|
||||
bool finished = runningScript->tick(dt);
|
||||
if (finished)
|
||||
CancelScript();
|
||||
}
|
||||
|
||||
sim->update(dt);
|
||||
|
||||
Display();
|
||||
|
@ -543,6 +548,10 @@ void KeyPress(unsigned char c, int x, int y)
|
|||
case '\r':
|
||||
textEnterMode = true;
|
||||
break;
|
||||
case '\e':
|
||||
CancelScript();
|
||||
textEnterMode = false;
|
||||
break;
|
||||
case 'A':
|
||||
if (sim->getTargetSpeed() == 0)
|
||||
sim->setTargetSpeed(0.000001f);
|
||||
|
@ -709,6 +718,32 @@ void KeyPress(unsigned char c, int x, int y)
|
|||
}
|
||||
|
||||
|
||||
void SpecialKeyPress(int key, int x, int y)
|
||||
{
|
||||
switch (key)
|
||||
{
|
||||
case GLUT_KEY_F1:
|
||||
sim->setTargetSpeed(0);
|
||||
break;
|
||||
case GLUT_KEY_F2:
|
||||
sim->setTargetSpeed(astro::kilometersToLightYears(1.0));
|
||||
break;
|
||||
case GLUT_KEY_F3:
|
||||
sim->setTargetSpeed(astro::kilometersToLightYears(1000.0));
|
||||
break;
|
||||
case GLUT_KEY_F4:
|
||||
sim->setTargetSpeed(astro::kilometersToLightYears(1000000.0));
|
||||
break;
|
||||
case GLUT_KEY_F5:
|
||||
sim->setTargetSpeed(astro::AUtoLightYears(1));
|
||||
break;
|
||||
case GLUT_KEY_F6:
|
||||
sim->setTargetSpeed(1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
// Say we're not ready to render yet.
|
||||
|
@ -822,6 +857,7 @@ int main(int argc, char* argv[])
|
|||
glutMouseFunc(MouseButton);
|
||||
glutMotionFunc(MouseDrag);
|
||||
glutKeyboardFunc(KeyPress);
|
||||
glutSpecialFunc(SpecialKeyPress);
|
||||
|
||||
timer = CreateTimer();
|
||||
renderer = new Renderer();
|
||||
|
|
Loading…
Reference in New Issue