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cone.html

MGF Entity cone Return to index

NAME

cone - create an open-ended, truncated right cone

SYNOPSIS

cone v1 rad1 v2 rad2

DESCRIPTION

Create a truncated right cone using the current material. The starting radius is rad1 at v1 and the ending radius is is rad2 at v2. The ends will be open, but may be capped using the ring entity if desired.

The surface normal will usually be directed outward, but may be directed inward by giving negative values for both radii. (It is illegal for the signs of the two radii to disagree.)\0 One but not both radii may be zero, indicating that the cone comes to a point.

Although it is not strictly forbidden to have equal cone radii, the cyl entity should be used in such cases. Likewise, the ring entity must be used if v1 and v2 are equal.

EXAMPLE 

# A parasol
o parasol
	v v1 =
		p 0 0 0
	v v2 =
		p 0 0 .75
	v v3 =
		p 0 0 .7
	m handle_mat
	cyl v1 .002 v2
	m parasol_paper
	cyl v2 0 v3 .33
o

SEE ALSO

cyl, f, m, prism, ring, sph, torus, v
by admin — last modified Apr 21, 2025 09:12 PM