Автор: Martin Clayton
Год: 1984
Издатели: ZX Computing
Языки:
Английский
Формат:
TAP лента
Требования:
ZX Spectrum 48K
Ссылки:
Страница на ZXArt
Страница на World Of Spectrum
Страница на Spectrum Computing
Скриншоты:
Год: 1984
Издатели: ZX Computing
Языки:
АнглийскийФормат:
TAP лентаТребования:
ZX Spectrum 48KСсылки:
Страница на ZXArt Страница на World Of Spectrum Страница на Spectrum ComputingСкриншоты:
3D PLOTTER (aka. Technical Drawing)
----------
by Martin Clayton
from ZX Computing, June/July 1984
Craft drawings can be viewed in several ways with this program from Martin
Clayton of Knaresborough.
When you have entered this program and first run it, a brief explanation of
how it works is given. To get the most effective displays from it however, a
few moments of preparation is necessary.
The shape must be a prism although the cross section can have any number of
points. Curves are not aliowed � even VU-3D, one of the best drawing programs
on the market, has problems with curves.
You must enter the coordinates of your shape as DATA in line 9000. These are
relative co-ordinates as used in the DRAW statement and start at the bottom
right corner to allow several views to be drawn on screen at once.
A possible shape section is shown in the diagram and the co-ordinates are
given. To use this in the program you would produce a DATA line as follows:
9000 DATA -50,0,-10,20,40,20,20,-40,1000
Note that 1000 is a "rogue" value to signal the end of the DATA to the
computer. Once the required shape DATA has been entered, then the program can
be RUN.
After the title page you are asked to input the depth in pixels of the shape.
The program then moves through four separate display modes.
1 ROTATIONAL The shape is moved through 90 degrees in a series of steps
specified by yourself.
2 WORKING DRAWING Technically known as 1st Angle Orthographic Projection, the
front, side and plan views are drawn in position.
3 OBLIQUE Where all the front facing planes are displayed in full and all the
other horizontals are at 45 degrees.
4 ISOMETRIC All sides are displayed equally with all horizontals at 30
degrees.
All the angles in this program are produced by a trigonometrical formula
which was carefully and painstakingly worked out by Martin. At each stage of
the display, an option to make a copy with the ZX printer is offered.
The DATA included gives the shape that we have used for the screen prints.
Try running the program with this to get an idea of the way the program works.
----------
by Martin Clayton
from ZX Computing, June/July 1984
Craft drawings can be viewed in several ways with this program from Martin
Clayton of Knaresborough.
When you have entered this program and first run it, a brief explanation of
how it works is given. To get the most effective displays from it however, a
few moments of preparation is necessary.
The shape must be a prism although the cross section can have any number of
points. Curves are not aliowed � even VU-3D, one of the best drawing programs
on the market, has problems with curves.
You must enter the coordinates of your shape as DATA in line 9000. These are
relative co-ordinates as used in the DRAW statement and start at the bottom
right corner to allow several views to be drawn on screen at once.
A possible shape section is shown in the diagram and the co-ordinates are
given. To use this in the program you would produce a DATA line as follows:
9000 DATA -50,0,-10,20,40,20,20,-40,1000
Note that 1000 is a "rogue" value to signal the end of the DATA to the
computer. Once the required shape DATA has been entered, then the program can
be RUN.
After the title page you are asked to input the depth in pixels of the shape.
The program then moves through four separate display modes.
1 ROTATIONAL The shape is moved through 90 degrees in a series of steps
specified by yourself.
2 WORKING DRAWING Technically known as 1st Angle Orthographic Projection, the
front, side and plan views are drawn in position.
3 OBLIQUE Where all the front facing planes are displayed in full and all the
other horizontals are at 45 degrees.
4 ISOMETRIC All sides are displayed equally with all horizontals at 30
degrees.
All the angles in this program are produced by a trigonometrical formula
which was carefully and painstakingly worked out by Martin. At each stage of
the display, an option to make a copy with the ZX printer is offered.
The DATA included gives the shape that we have used for the screen prints.
Try running the program with this to get an idea of the way the program works.