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-
- Earth 1.1
- =========
-
-
- Earth is a system extension which draws a spinning globe over the
- apple in the menu bar (in colour if you have it). To install
- Earth, simply put it into your System Folder and reboot. Once
- it is installed, placing the cursor in the upper left-hand corner
- of the screen and waiting a fraction of a second will put the
- spinning globe away (or bring it back). Earth 1.1 may be freely
- used and copied as long as it is not sold for profit without my
- permission and any redistribution includes this file. (Enjoy!)
- If you would like to customize it for yourself, please see the
- section "For ResEdit Hackers" below.
-
- Earth 1.1 has been successfully tested on a range of Macintoshes
- and System versions, from a Plus with System 6.0.8 to a Quadra
- 700 with System 7.0.1 and TuneUp 1.1.1. However, I cannot
- guarantee that Earth will work with your system, so use it at
- your own risk. I will help with reported problems as I can, but
- I cannot accept responsibility for difficulties or damage caused
- by Earth or its interaction with other software. That being said,
- please note that two major difficulties were reported with version
- 1.0 of Earth that I was unable to investigate and/or duplicate,
- so Earth 1.1 may be subject to them as well. One report was that
- Earth 1.0 caused serious damage when used with the Radius Pivot
- monitor and the other that it hung on start-up on a Macintosh
- Classic II with System 7.0.1.
-
- Please send any inquiries or bug reports to:
-
- Stefan Bilaniuk
- Department of Mathematics
- Trent University
- Peterborough, Ontario
- Canada K9J 7B8
-
- Internet address: sbilaniuk@trentu.ca
-
-
- Acknowledgments
- ---------------
- The idea of replacing the apple in the menu bar by a rotating Earth
- is due to David Magagnosc. The bit maps for Earth 1.0 were taken
- from Don Harriss’ RotatingEarthCursor; these were modified and
- added to in Earth 1.1. Owen Linzmayer contributed new icons for
- Earth, some of which have been used (with modifications) in
- Earth 1.1. Thank you all!
-
-
- Changes from Earth 1.0
- ----------------------
-
- • New bit maps of the Earth's faces have been added to smooth the
- rotation.
-
- • Earth 1.1 will draw the Earth in colour if Color Quickdraw is
- present. A 'clut' resource specifies the colours to be used.
-
- • New icons, including colour icons, have been created for
- Earth 1.1.
-
- • A new resource has been added for those who wish to customize
- Earth 1.1. Please see the section "For ResEdit Hackers" below
- for a description.
-
-
- For ResEdit Hackers
- -------------------
-
- If you wish you may use ResEdit to modify Earth in various ways.
- Please do not distribute any customized versions publicly without
- my permission, though.
-
- • The speed of rotation can be altered by changing the value of
- the DrvrDelay parameter in Earth 1.1's two 'DRVR' resources.
- The stock value is 5; increasing it will slow the rotation and
- decreasing it will speed up the rotation.
-
- • The frequency with which Earth checks whether cursor is in the
- upper left-hand corner of the screen (to see if it should change
- its visibility state) is stored as an integer in the first two
- bytes of Earth 1.1's 'AePm' resource. The stock value is 6;
- increasing it reduces the frequency with which Earth checks the
- corner, decreasing it will increase the frequency.
-
- • The bit maps for the spinning globe are stored in a 'SICN'
- resource and a parameter specifying how many there are is stored
- as an integer in the last two bytes of the 'AePm' resource. The
- value of this parameter must be two less than the actual number
- of bit maps in the 'SICN' resource. The last two bit maps are
- used to draw the the border of the image (in black) and its
- background (in white under old Quickdraw and in the background
- colour - see below - under Color Quickdraw). The remaining bit
- maps are used successively to give the illusion of motion. The
- stock release of Earth 1.1 has 26 bit maps of the land areas of
- various faces of the Earth, plus circular border and background.
-
- • If Color Quickdraw is available, Earth will use the colors in
- its 'clut' resource. The first two colours in this resource are
- black and white respectively. (Don't change these.) The next
- two are the colour used to draw the background image and the
- colour used to draw the moving images respectively. The stock
- colours are the standard four-bit light blue (R: 514; G: 43947;
- B: 60138) for the background and the standard four-bit dark green
- (R: 0; G: 25700; B: 4369) for the moving images.
-
- ------------
- [1992.07.16]
-