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- SECTE Menu: PEDIT
- ==============================================================================
- Sections a solid entity on a plane.
-
- 1. (CHAR) option: plane: (o-orthogonal, d-diagonal, f-free) <o>
- if option `o' is selected:
- 2. (CHAR) axis of section (x,y or z)
- 3. (CHAR) define the section by: v-value, p-point <p>
- if option `p' is selected:
- 4. (POINT) point on section plane
- 5. (POINT) pick point on part to be kept
- if option `v' is selected:
- 4. (POINT) value on axis
- 5. (POINT) specify location within part to be kept
- if option `d' is selected:
- 2. (POINT) first point on section plane
- 3. (POINT) second point on section plane
- 4. (POINT) pick point on part to be kept
- if option `f' is selected:
- 2. (POINT) first point on section plane
- 3. (POINT) second point on section plane
- 4. (POINT) third point on section plane
- 5. (POINT) pick point on part to be kept
- for all options:
- 6. * (IND) entity to section
- 7. * (Y/N) confirm choice
- 8. * (Y/N) keep the result ? <y>
- Description:
- This command sections a 3D entity along a plane either:
- 1. orthogonally at a specified coordinate value (`o', the default), or
- 2. perpendicular to an axial plane, or
- 3. by a free plane defined by three points.
- Orthogonal (option `o'):
- Specify an axis and select one of two further options: `p', the default, to
- point to the position of the section, or `v', to state a coordinate value on
- the axis selected. The section plane will be normal to the axis at the
- specified value. Then enter another coordinate value on the same axis to
- indicate which side of the section plane is to be kept.
-
-
- Diagonal (option `d'):
- Pick two points on one of the axial planes (xy, yz or xz). The section will be
- cut through the two points perpendicular to the plane on which the points are
- located. Pick another point to indicate the side of the section that is to be
- retained.
- Free (option `f'):
- Pick three points to define a free plane and a fourth point to indicate the
- side to be kept. Indicate (and confirm) the entity you wish to section. The
- sectioned entity will be displayed temporarily. You are then prompted to keep
- or reject the result. If you enter `y' the temporary entity becomes
- a permanent new entity consisting only of the side you selected to be kept.
- You are prompted to indicate additional entities to be sectioned until you
- enter a new command.
- The result of this process is a complex solid entity (data type 9).
- A wall sectioned by this command becomes a complex wall and continue to
- possess the characteristics of a wall but the commands \chaw, \chaa, \fixw,
- and \fixa have no effect. This command sections only walls and solids. You may
- not cut lines, arcs, texts, or dimension lines.
- When indicating an entity to cut:
- 1. An axial wall entity must be indicated by pointing to its axial line or to
- its solid.
-
- 2. A solid prism or any solid created by two polygons must be indicated by
- pointing to one of the edges connecting the polygons.
- 3. The number of points in any polygon (including the resultant polygon) must
- not exceed 200. Take care when sectioning a wall through its openings since
- the result will be a single complex entity.
- 4. If a placed entity containing several cut entities is operated on, the
- result will be a single complex entity.
- 5. The axial entity of an axial wall will not be saved.
-
- Example: \secte o z v 1 0 (indicate) y y
-
- Result: The indicated entity is sectioned along a plane normal to the z axis
- (parallel to the xy plane) at the point where z=1. The part having a z value
- larger than1 disappears, leaving only the part where z is less than1.