3D Shapes

CSLAB_

CSLAB_ top_material, bottom_material, side_material, n, h, x1, y1, z1, s1, ... xn, yn, zn, sn

Extension of the SLAB_ statement; the first three parameters are used for the material name/index of the top, bottom and side surfaces. The other parameters are the same as above in the SLAB_ statement.

See also “Materials” on page 160 and the “Requests” on page 242 > IND function description “Miscellaneous” on page 223.

si: status code that allows you to control the visibility of polygon edges and side surfaces. You can also define holes and create segments and arcs in the polyline using special constraints.

See “Status Codes” on page 139 for details.

CWALL_

CWALL_ left_material, right_material, side_material, height, x1, x2, x3, x4, t,

mask1, mask2, mask3, mask4, n,

x_start1, y_low1, x_end1, y_high1, frame_shown1,

...

x_startn, y_lown, x_endn, y_highn, frame_shownn, m,

a1, b1, c1, d1,

...

am, bm, cm, dm

left_material, right_material, side_material:

Material names/indices for the left, right and side surfaces. (The left and right sides of the wall follow the x axis.)

See also “Materials” on page 160 and the “Requests” on page 242 > IND function description.

The reference line of the wall is always transformed to coincide with the x axis. The sides of the wall are in the x-z plane.

height: The height of the wall relative to its base.

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x1, x2, x3, x4: The projected endpoints of the wall lying on the x-y plane as seen below. If the wall stands on its own, then

x1 = x4 = 0, x2 = x3 = the length of the wall. t: the thickness of the wall.

t < 0 if the body of the wall is to the right of the x axis, t > 0 if the body of the wall is to the left of the x axis,

t = 0 if the wall is represented by a polygon and frames are generated around the holes. mask1, mask2, mask3, mask4: Control the visibility of edges and side polygons.

maski = j1 + 2*j2 + 4*j3 + 8*j4 where j1, j2, j3, j4 can be 0 or 1.

The j1, j2, j3, j4 numbers represent whether the vertices and the side are present (1)

or omitted (0).	mask 4
n: the number of openings in the wall.
x_starti, y_lowi, x_endi, y_highi: coordinates of the openings as shown below.

Y
t
			X
x1	x4	x3	x2
Z	mask 3
	Y
			mask 2
j2	j3
	j4
	j1		X

frame_showni values:

1, if the edges of the hole are visible; 0, if the edges of the hole are invisible.

Negative values control the visibility of each of the opening’s edges separately.

Z

height

frame_showni = -(1*j1 + 2*j2 + 4*j3 + 8*j4 + 16*j5 + 32*j6 + 64*j7 + 128*j8),

where j1, j2... j8 can be either 0 or 1. The numbers j1 to j4 control the visibility of the edges of the hole on the left-hand side of the wall surface,

while j5 to j8 affect the edges on the right-hand side, as shown on the illustration below.

x_start i

x_end i

mask 1

	i
	high
i
low	y_
y_

X

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An edge that is perpendicular to the surface of the wall is visible if there are visible edges drawn from both of its endpoints.

m: the number of cutting planes.

ai, bi, ci, di: coefficients of the equation defining the cutting plane [ai*x + bi*y + ci*z = di]. Parts on the positive side of the cutting plane (i.e., ai*x + bi*y + ci*z > di) will be cut and removed.

[ai, bi, ci]

Z
	j3
	j7	j2
j4	j1	j6
j8	j5
Y
		X

BWALL_

BWALL_ left_material, right_material, side_material, height, x1, x2, x3, x4, t, radius,

mask1, mask2, mask3, mask4, n,

x_start1, y_low1, x_end1, y_high1, frame_shown1,

...

x_startn, y_lown, x_endn, y_highn, frame_shownn, m,

a1, b1, c1, d1,

...

am, bm, cm, dm

A smooth curved wall based on the same data structure as the straight wall CWALL_ element. The only additional parameter is radius.

Derived from the corresponding CWALL_ by bending the x-z plane onto a cylinder tangential to that plane. Edges along the x axis are transformed to circular arcs, edges along the y axis will be radial in direction, and vertical edges remain vertical. The curvature is approximated by a number of segments set by the current resolution (see the commands: “RADIUS” on page 152, “RESOL” on page 153 and “TOLER” on page 154).

See also “CWALL_” on page 45 for details.

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Examples: a BWALL_ and the corresponding CWALL_.

ROTZ -60
BWALL_ 1, 1, 1,				6,	0,
4,	0,		6,
0.3,			2,	15,	15,
15,		15,
5,						-255,
1, 1, 3.8, 2.5,
1.8, 0, 3, 2.5,						-255,
4.1, 1, 4.5, 1.4, -255,
4.1, 1.55, 4.5,						1.95,-255,
4.1, 2.1, 4.5, 2.5, -255,
1, 0, -0.25, 1,						3

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