Category : Printer + Display Graphics
Archive   : GRAPH.ZIP
Filename : 3DGRAPH.DOC

Output of file : 3DGRAPH.DOC contained in archive : GRAPH.ZIP


BY Joe Martin
Ft. Walton Bch. FL 32548

3D Graph is a 3 dimensional equation plotter. Plotted on an imaginary
xyz coordinate system. You have the ability to rotate the graph,
determine the object to image perspective distances, adjust the X and Y
ranges as well as their increments, state translations of both the X
and the Y axes and scale on both X and Y axes.

So experiment with the default equation then try some of the others at
the end of the doc.

Z:=2*COS(0.1*(X^2+Y^2)) The equation may be edited with backspace,
cursor keys, and the home key

YRot: Rotate along Y axis suggested range (-1.0 thru 1.0)
XRot: Rotate along X axis range (0.6 - 1.4)
Obj : distance of object from origin (20-100)
Im : distance of Image(screen) from origin (500-1000)

XRan: most equations should have a range of 10 which means (-10 to 10)
YRan: most equations should have a range of 10 which means (-10 to 10)
XInc: the step value of the loop (2.0 to 0.25)

XTr : X Translation factor (200)
YTr : Y Translation factor (100)

ScX : Scale X (2.0)
ScY : Scale Y (1.0)

When you have made the adjustments ESC will start the plot.
Some error checking is done but overflow errors will crash the system.

Try these:

Z := 0.2*(0.1*(X/Y)^2-0.1*(Y/X)^2)+6*EXP(-1.9*(X^2+Y^2))
YRot:0.8 XRot:1.8 XRange:4 YRange:5 Obj:45 Im:900

Z := 0.5*(-0.1*(X/Y)^2-0.3*(Y/X)^2)+8*EXP(-0.1*(X^2+Y^2))
YRot:0.8 XRot:1.4 XRange:10 YRange:10 Obj:75 Im:900

Z := 0.02*(X*X*Y/X/Y)
YRot:0.3 XRot:1.2 XRange:10 YRange:10 Obj:50 Im:800

Z := 1/12*(SIN(X)*SIN(Y))
YRot:0.6 XRot:0.8 XRange:4 YRange:4 Obj:45 Im:900

Z := 2*COS(0.1*(X^2+Y^2))-2*SIN(0.1*(X^2+Y^2))
YRot:0.3 XRot:1.2 XRange:10 YRange:10 Obj:50 Im:750

Z := 0.5*(0.2*(X/Y)^2-0.2*(Y/X)^2)
YRot:0.3 XRot:1.8 XRange:10 YRange:10 Obj:45 Im:900

Z := 3*SIN(-0.05*(X^2-Y^2))-2*COS(0.1*(X^2+Y^2))
YRot:-0.6 XRot:1.2 XRange:10 YRange:10 Obj:50 Im:550

  3 Responses to “Category : Printer + Display Graphics
Archive   : GRAPH.ZIP
Filename : 3DGRAPH.DOC

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: