File Release Notes and Changelog
Notes:
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* RELEASE NOTES for GeoGebra 3.0
* Markus Hohenwarter
* http://www.geogebra.org
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******************************************
* GeoGebra 3.0 (RC 5) - February 10, 2008
******************************************
If you discover a bug in this version, please report it
to Markus Hohenwarter (markus@geogebra.org). Thank you!
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* New in User Interface
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* User Defined Tools
- You can now create your own tools based on an existing construction.
Choose "Create new tool" in the "Tools" menu, specify the output
and input objects of your tool and choose a name for the toolbar
and a command name.
- Your tool can be used both with the mouse and as a command in
the input field. All tools are automatically saved in your
"ggb" construction file.
- You can use any image for the toolbar icon. GeoGebra resizes your
image automatically to 32x32 pixels.
- Use the "Manage tools" dialog (menu "Tools") to change the names or
the icon of your tools. You can also delete or save selected tools there.
- You can save selected tools in a GeoGebra Tools File ("ggt").
This file can be opened at any time by using "File", "Open" to load its
tools in another construction.
Note that opening a "ggt" file does not change your current construction,
but opening a "ggb" file does.
* Customizeable Toolbar
You can now customize the tools in GeoGebra's toolbar (menu "Tools"). This is
especially useful for creating dynamic worksheets that include a restricted
toolbar. The toolbar setting is saved with your construction in a .ggb file.
* Persistence / Saveable Settings
GeoGebra now remembers your favorite settings (menu "Options", "Save settings"),
your last four ggb files and working directory.
* Selection Rectangle
Choose "move" mode, then press and hold the left mouse key to pull up a rectangle
that lets you select multiple objects. You may then move multiple objects by
dragging one of the selected. The selection rectangle can also be used to
specify a part of the graphics window for printing, exporting pictures
and for dynamic worksheets (see "File" menu).
* New Properties Dialog
- The objects in the properties dialog ("Edit" menu) are now organized
by types (points, lines, etc.) which makes it much easier to handle large
numbers of objects.
- On the right side, the different elements are now organized in tabs.
- Name and definition of objects can be changed directly in text fields.
- Selection rectangle can be used to select several objects from the
graphics window
* Axes scaling by dragging
Choose "move drawing pad" mode and drag one of the axes to change its scale.
You can also do this from any other mode by pressing Shift and then drag an axis.
Note: Shift + Drag also lets you move the drawing pad.
* Axes properties (right click on drawing pad)
- hide/show coordinate axes individually
- hide/show minor or all ticks
- bold axes styles
* Labelling of new objects
In the "Options" menu you can now specify whether the label of a newly created
object should be shown or not. Note: The setting "Automatic" shows labels
when the algebra window is open while you create new objects.
* Fast renaming
After creating a new object or selecting an existing one, start typing to
rename this object.
* Fast dragging
You can now move objects in any mode by dragging with the right mouse button
pressed.
* Press "Esc" key to close an open dialog or to get back to "Move" mode
* Enhanced MacOS X Support
- Menu bar is on top of screen
- Keyboard shortcuts use Command/Apple key on Mac and Control key on other platforms
- Double click on ggb file opens it in GeoGebra
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* New in Toolbar
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* New Tool: "Regular polygon"
specify two points on the polygon and the total number of vertices
* New Tool: "Area"
of polygon, circle, ellipse
* New Tool: "Slope"
of line
* New Tool: "Checkbox to show and hide objects"
lets you create a checkbox (boolean value) to show and hide other objects
Note: this is done using the advanced option "Condition to show object"
(see properties dialog)
* Extended Tool: "Distance and length" now shows dynamic texts for
- distance of two points, length of segment
- distance between point and line
- circumference of circle and circular sector
- perimeter of polygon
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* New Features
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* Point on Polygon
You can now create a point on the outline of a polygon by selecting
the "New point" tool and clicking on a polygon.
* Point on Locus Line
You can now put a point on a locus line using the "New point" tool.
* Parametric curves
Curve[ expression, expression, variable, from, to ]
e.g. c = Curve[ 2 cos(t), 2 sin(t), t, 0, 2pi ]
The from and to parameters are dynamic, i.e. you can use slider variables there.
Curves can be used like functions in arithmetic expressions, e.g. c(3) returns a
point that depends on the curve. You can also place a point on a curve.
New commands:
Derivative[ <Curve> ]
* Transformations for groups of objects
All transformation tools (mirror, rotate, translate, dilate) now
support the selection of groups of objects.
Example: to mirror several objects at a point, choose the respective tool
from the toolbar. Then select a group of objects using the selection
rectangle (drag mouse). Finally, click on the point where these objects
should be reflected.
* Lists of objects
e.g. L = { A, B, C }
* Sequence command to generate lists of objects:
Sequence[ expression, variable, from, to ]
Sequence[ expression, variable, from, to, step ]
e.g. L = Sequence[ (2, i), i, 1, 5 ]
The from and to parameters are dynamic, i.e. you can use slider variables there.
* Interpolation polynomial
Polynomial[A, B, C] or Polynomial[{A, B, C}] creates a polynomial of degree n-1
through n given points
* Continuity of intersection points:
You can now turn on/off the continuity heuristic in the options menu. GeoGebra uses a
near-to-heuristic to keep moving intersection points (line-conic, conic-conic) close to
their old positions and avoid jumping intersection points. However, in some situations
this heuristic leads to unwanted results, so you can now turn it on or off in the
options menu. By default this heuristic is now turned off.
Note: for user defined tools continuity is always turned off.
* New built in operations / functions
- Euler constant introduced: the exponential function can now
be written both as e^x or exp(x)
- New logarithm functions:
ln(x) or log(x) for natural logarithm (of e)
ld(x) for logarithm of 2
lg(x) for logarithm of 10
- unary plus like in +4 * -2 is valid now
- random() for a random number between 0 and 1
select in algebra window and use arrow keys to get a new value
- cbrt(x) for cubic root function (supports derivative and integral too)
* Boolean values ("true" and "false") and operations ("and", "or", "not",
<, <=, >=, >, "equal", "unequal", "parallel" and "perpendicular",
(see list next to input field).
* Condition to show object
In the properties dialog you can now specify a condition for the visibility
of an object in the graphics window (see "advanced" tab).
* Conditional functions, e.g. f(x) = If[ x < 3, sin(x), x^2 ]
You can use derivatives and integrals of such functions and intersect them.
* Decorations for segments and angles
In the properties dialog you can choose ticks and arcs
to decorate segments and angles
* Size of drawingpad is saved in ggb files now
* Export of dynamic worksheets
- new dialog with "advanced" tab to set applet parameters
- option in "advanced" tab to export dynamic worksheet files
without jar files. Such worksheets use the highly packed
jar files on GeoGebra's web server and archive
http://www.geogebra.org/webstart/geogebra.jar
* Export drawing pad as picture: new formats ...
- Portable Document Format (PDF)
- Scaleable Vector Graphics (SVG)
- Enhanced Metafile Format (EMF)
- PSTricks (for LaTeX), contribution by Lo�c Le Coq
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* New Commands
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AffineRatio[ <Point A>, <Point B>, <Point C> ]
returns the affine ratio lambda of three collinear points,
where C = A + lambda * AB
Area[ <Conic> ]
returns the area of a circle or ellipse
Circumference[ conic ]
returns the circumference of a circle
CrossRatio[ <Point A>, <Point B>, <Point C>, <Point D> ]
returns the cross ration lambda of four collinear points,
where lambda = AffineRatio[B, C, D] / AffineRatio[A, C, D]
Curvature[ <Point A>, <Function f> ]
returns the curvature of f in point A
Curvature[ <Point A>, <Curve c> ]
returns the curvature of c in point A
CurvatureVector[ <Point A>, <Function f> ]
returns the curvature vector of f in point A
CurvatureVector[ <Point A>, <Curve c> ]
returns the curvature vector of c in point A
Curve[ expression, expression, variable, from, to ]
creates a parametric curve, e.g. Curve[ 2 cos(t), 2 sin(t), t, 0, 2pi ]
Div[ <Number a>, <Number b> ]
returns the integer quotient of a and b
Element[ <List l>, <Number n> ]
returns the n-th element of list l
Iteration[ f(x), x0, n ]
returns f applied n-times to x0
IterationList[ f(x), x0, n ]
returns a list of the results of applying f to x0 0 through n times
Length[ <Function>, <Number x1>, <Number x2> ]
returns the length of the function graph between two x1 and x2
Length[ <Function>, <Point>, <Point> ]
returns the length of the function graph between two points on the graph
Length[ <Curve>, <number t1>, <number t2> ]
returns the length of the curve between two t1 and t2
Length[ <Curve>, <Point>, <Point> ]
returns the length of the curve between two points on the curve
Length[ <List l> ]
returns the number of elements of list l
Max[ <Number a>, <Number b> ]
returns the maximum of a and b
Max[ <List l> ]
returns the largest number in list l
Min[ <Number a>, <Number b> ]
returns the minimum of a and b
Min[ <List l> ]
returns the smallest number in list l
Mod[ <Number a>, <Number b> ]
returns gives the remainder on division of a by b
Name[object]
returns text showing the name of the given object
OsculatingCircle[ <Point A>, <Function f> ]
returns the osculating circle of f in point A
OsculatingCircle[ <Point A>, <Curve c> ]
returns the osculating circle of c in point A
Perimeter[ polygon ]
returns the perimeter of a polygon
Polygon[ <Point A>, <Point B>, <Number n> ]
creates a regular polygon with n points where A and B are the
first two vertices
Sequence[ expression, variable, from, to ]
Sequence[ expression, variable, from, to, step ]
creates a list of objects, e.g. Sequence[ (2, i), i, 1, 5 ]
Tangent[ <Point A>, <Curve c> ]
returns the tangent to curve c in point A
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* JavaScript and Applets
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* new reset icon ("refresh" instead of "GeoGebra ellipse")
* GeoGebraApplet to JavaScript communication: listeners for add, remove, rename, update
* a lot of new methods to access the GeoGebraApplet from JavaScript
see http://www.geogebra.org/source/program/applet/geogebra_applet_javascript.html
* applet parameter "rightClickEnabled" to disable context menus and properties dialog
* applet parameter "borderColor" to set color of border line around applet panel
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* New Languages
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Arabic, Bulgarian, Finish, Greek, Hebrew, Macedonian, Polish, Portuguese of Portugal,
Persian, Turkish, Vietnamese. GeoGebra now comes with 35 language variants!
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* Documentation
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The "GeoGebra Help" document has been revised, comes in a new design
and is easily searchable (see "Help" menu in GeoGebra).
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* New License
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You are free to copy, distribute and transmit GeoGebra for
non-commercial purposes. Please see the GeoGebra license for details.
http://www.geogebra.org/download/license.txt
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* Enhancements
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* entering functions using "y=" is now possible, e.g. "y = sin(x)" is now
understood like "sin(x)"
* f(x) = x^(a/b) is now plotted for negative x too if a is an integer and b an odd number
* mirroring of a point at a line using line/circle intersections is now possible
* specify name of slider on creation in slider dialog
* objects that are undefined when created are now shown in algebra window
(except intersection points)
* new plotting algorithm for functions and curves
* smoother plotting of functions, locus lines and hyperbolas
* click on input button toggles between input field mode and move mode
* selected toolbar button shows blue border to emphasize currently selected tool
* default label of polygons changed from "P" to "poly"
* intersection of functions, function-line
- automatic adaption of start value when startpoint has no name
(i.e. when you clicked on the intersection to get it)
* root finding of non-polynomial functions
- false position replaced by Brent's method in Root[f, a, b]
- added automatic valid domain search for Newton's and Brent's method
* transformation commands now always create dependent objects and don't change free input
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* Bugs fixed
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* centroid command now computes centroid of area, not of vertices
* location of single intersection points after reopening file fixed
* location of tangents to circle after reopening file fixed
* made intersection of conic sections numerically stabler
* made intersection of lines numerically stabler
* corner command of images
* text keeps formating when edited now
* Esc-key in input field clears text again
* test point-on-parabola in vertex position fixed
* line through point at infinity works again
* slider with show label "name" is saved correctly now
* intersect line-conic: first-intersection initing problem fixed
* Function[ <constant number variable>, from, to ] works now
* Mode "Input Field": input field gets focus again after selecting object in algebra window
* Breakpoints in construction protocol
* and many more ;-)
Changes:
****************************************
* RELEASE NOTES for GeoGebra 3.0 Installer
* Yves Kreis
* http://www.geogebra.org
****************************************
******************************************
* GeoGebra 3.0 (RC 5) - March 06, 2008
******************************************
If you discover a bug in this installer, please report it
to Yves Kreis (yves@geogebra.org). Thank you!
************************
* Enhancements
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* the installer has been build using InstallAnywhere 2008 for better Vista and Leopard support as well as better Java 1.6 support
* the installer creates a Mac OS X application GeoGebra.app (without an enclosing directory)
* on Mac OS X the installer registeres the application and the icons are updated in the Finder
* on Windows the installer registeres the file extensions and the uninstaller even if the user does not have Administrator rights
* on Linux the installer registeres the file extensions and adds GeoGebra to the menu
* only the user which installed the application (or an Administrator) is allowed to deinstall it
* the installer is consistent on all panels, i.e. going back will reselect the same options chosen before
* the Start menu items on Windows are closer to the webstart version
* the permissions are set using a quicker method on Mac OS X/Unix
* Leopard icon (512x512) and some Windows icons (64x64, 24x24) added
* new license is displayed
* if the installation language is English, both English help folders (en and en_UK) will be installed by default (during Minimal and Custom setup)
* new help languages (no_NO and no_NO_NY as well as pl and ja) have been added
* new installer languages (ja, ru and ch_CN) has been added
* the installer will no longer output debug
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* Bugs fixed
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* the Linux 48x48 icon is now the correct png one
* GeoGebra can now be used with Limitations, Capabilities and Parental Control on Mac OS X
* Finder Info is now showing "GeoGebra x.y.z.r, Copyright 2001-2008 GeoGebra Inc."
* the log file (if generated, i.e. if errors occured) has the correct permissions under Mac OS X and *nix (i.e. 644)
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* Known problems
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* translations are not done yet, some titles (while translated) are on the wrong panels or display the wrong text
