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Length: 580 (0x244)
Types: TextFile
Notes: UNIX file
Names: »polar.c«
└─⟦f27320a65⟧ Bits:30001972 Commodore 900 hard disk image with partial source code
└─⟦2d53db1df⟧ UNIX Filesystem
└─⟦this⟧ »frankh/gsrc/polar.c«
#include <stdio.h>
#include <math.h>
double line(),
point(),
sin(),
clear();
main()
{
double x, xx, y,
theta, r;
clear();
axis();
for (theta = -PI; theta < PI; theta = theta + 0.005) {
r = (sin(theta*theta*theta) * sin(theta)*cos(theta)*cos(theta));
x = r * cos(theta); /* generate rectangular co-ord */
y = r * sin(theta);
x = x * 500.0 * 4.0;
y = y * 380.0 * 4.0;
/* y = (int)(sqrt(sin(xx) * cos(xx)) * 399.0);
y = (int)((sin(xx) * (x/6)) * 4.0); */
plot( (int)x, (int)y);
}
}
plot(x,y)
int x,y;
{
x = x + 511;
y = y + 399;
point( x, y);
}