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- ISOTR Menu: PRISM
- ==============================================================================
- Creates a right-angled triangular (isosceles) polygon or a solid right-angled
- triangular prism based on the polygon.
-
- 1. * (CHAR) plane of triangle (x-xy,y-yz,z-zx) <x>
- 2. * (POINT) starting point
- 3. * (NUM) edge length
- for option `x':
- 4. * (NUM) height of prism
- for options `y' or `z':
- 4. * (NUM) length of prism
- for all options:
- 5. * (Y/N) positive prism? <y>
-
- Description:
- This command creates a right-angled triangular (isosceles) polygon or
- a triangular prism based on the polygon.
- The triangle will be right-angled at the starting point; the two other angles
- will both be 45. Specify one of the axial planes; (x xy plane, the default; y
- yz plane, z xz plane). Define a starting point. Specify the edge length
- (greater than 0) and the prism height (for `x' option) or the length (for `y'
- and `z' options). You may enter `0' for a 2D polygon. Enter `y' (the default)
- for a positive prism or `n' for a negative one. The edge length specified
- refers to the two shorter sides of the triangle (not the hypotenuse). The
- orientation of the triangle is such that the two equal sides extend from the
- starting point in a positive direction parallel to the two axes defining the
- plane of the triangle. You are prompted to create more prisms until another
- command is selected.
- Example: \isotr x 0 0 0 4 3 y
- Result: A positive solid triangular (isosceles) prism is created with
- its origin at the point 0 0 0. Its edges (other than
- hypotenuse) are 4 units long and its height is 3 units.