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- HPIPE Menu: PRISM
- ==============================================================================
- Creates an open semi-cylindrical prism or a (2D) semi-annulus polygon.
-
- 1. * (CHAR) plane of base semi-annulus (x-xy, y-yz,z-zx) <x>
- 2. * (NUM) option: (0-top half /3-right half /6-bottom half /9-left
- half) <0>
- 3. * (POINT) center of radius
- 4. * (NUM) outer radius of semi-annulus (greater than 0)
- 5. * (NUM) "wall" thickness (greater than 0)
- for option `x':
- 6. * (NUM) height of prism
- for option `y' or `z':
- 6. * (NUM) length of prism
- for all options:
- 7. * (Y/N) positive prism? <y>
-
- Description:
- This command creates a (2D) semi-annulus polygon or an open semi-cylindrical
- prism (half pipe).
- Specify the base plane (one of the axial planes; x xy plane, the default, y
- yz plane or z xz plane).
- Choose one of the options for semi-cylinder orientation: 0 top half, 3 left
- half, 6 bottom half, or 9 right half (the default is 0).
- Define the radius center point, the outer radius and the "wall" thickness.
- Specify the height (for option `x') or the width (for options `y' or `z'). You
- may enter `0' for a 2D polygon. Specify whether the resulting solid is to be
- positive (option `y', the default) or negative (option `n').
- You are prompted to create additional semi-cylinders until another command is
- selected.
- Example: \hpipe x 0 3 3 0 4 0.2 1 y
- Result: A positive semi-cylinder is created with its center point at
- 3 3 0, a radius of 4 units (meters or feet), a "wall"
- thickness of 0.2 units and a height of 1 unit.