Geomet3D
Geomet3D is
an analytic geometry program in 3D. You can put points, vectors, lines, and
planes; and do basic analytic geometry operations with them. This program is
created by Juan Carlos Criado Alamo (IES Los Manantiales, Torremolinos,
Program basic structure.
The points
are the basic structures in the program. After they there are the vectors. To
put a vector you have to select two points (initial and terminal points). Next,
there are lines and planes. If you want to put anyone of them, you have to
select a point (which belongs to the line or the plane) and a vector (parallel
to the line or perpendicular to the plane). In the status bar appear
successively instructions to do any of these options.
How to put points.
To put a
point, you have to select the “Point” option and you’ve to click in the screen
in the site where you want to put it (in the status bar in the window’s bottom
will appear the coordinates of the point). If you want to put the point in z ≠ 0 then you have to keep
pressed the mouse and move it vertically. That will change the z coordinate of the point.
How
to select objects.
You need to
select objects to put vectors, lines, planes, and do all the operations. First,
you must click “Select/Move” button. After that, you can select a point on the screen
or in the list located in the right side of the window. All the other objects
must be selected only from the list.
Changing and seeing objects’
properties.
You can
change an object that has already been put. You have to select the object and
then click with the right button of the mouse over it. Then there is a
contextual menu where you have to click over “Properties…” and will appear a window with the object properties.
You can change the coordinates of a point, the initial point or terminal point of
a vector, the position of a vector, the point or the vector that defines a line
or a plane…You can move the x-y coordinates of a point just in the screen with
the mouse.
Doing operations.
To do an
operation, you have to click in the “Operations”
button and then choose the operation you want to do. You must select the
objects in the order that they appear in the menu.
Scales.
You can
change scales in the textboxes “Width”
and “Height”. You can also change scales in the two buttons up in the window, “+” and “-“. In Menu>Tools>Change
scale you can select an option to fit the scale.
Others.
To save a
drawing to be later loaded with Geomet3D
you can do it in Menu>File>Save>Geom3D
format… or if you want to save it as a bitmap you can do it in Menu>File>Save>Bitmap …
Sometimes
the screen erases itself. You have to click over “Refresh” and then will appear the drawing again.
You can
change the color and the width of all the objects.
Clicking
over “Show axis” you can see the x-y
axes in the screen.