Views > Transform > ReqPos > Set fixed view point 
Use this function to fix the active view at a point associative to the geometry.
Determine the fixed view point.
You must determine this point with a point option (Autopilot, keyboard or point option menu). Taking over the current cursor position by mouse click is not a point associative to the geometry and therefore not possible as a fixed point.
If a fixed point is already defined for the active view, it will be highlighted in colour in the drawing.
The fixed point is stored by HiCAD in associative form, its projection in 2-D natural coordinates. After changes to the part geometry, the preliminary new projection of the 3-D point is calculated and the view is shifted to that the projection falls back to the previously saved 2-D natural coordinates.
In detail, the following applies:
- If the geometry changes, HiCAD moves the view so that the specified fixed point, which may be in a different location in 3-D, is in the same location in the drawing (2-D). This means that the coordinates of the point in the cartesian XY coordinate system (natural coordinates) do not change.
- If the scale changes, the same applies as for geometry changes. However, this only applies if no fixed point is specified interactively for the scale change.
- If you move the view explicitly, for example manually via Drag&Drop or via the API, the fixed point in the drawing also moves.
- If you rotate the view dynamically around a point (mouse or space mouse), the fixed point in the drawing will shift unless the view is rotated around the fixed point. The fixed point will also shift when you rotate around an axis of the active coordinate system. For all other changes of the projection - even when you rotate around an axis of the world or image coordinate system or when you rotate incrementally - the fixed point will keep its position in the drawing.
Example:
Let us consider the beam shown.
If you set the fixed view point to the start point of the beam axis (1) and select the left beam end (2) for the length change (e.g. 500) then the position of the fixed point will be retained.
Without a fixed point, the result would look like this:
The function is also available in the context menu for views.
Projections (3-D) • Linked Views (3-D) • View Functions (3-D)