SET_CATCH_PARAMETERS catches 2D and 3D coordinates coincident with nearby elements of a specified type, if the element type is active, and the element is visible.
---->(SET_CATCH_PARAMETERS)--+--(:NEXT_CATCH)--------------+----> | | +--(:DEFAULT_2D)--------------+ | | +--(:DEFAULT_3D)--------------+ | | +--(:WP)--+--(:ON)---+--------+ | | | | | +--(:OFF)--+ | | | +--(:WP_CURRENT)--------------+ | | +--(:WP_ALL)------------------+ | | +--(:PART)--+--(:ON)---+------+ | | | | | +--(:OFF)--+ | | | +--(:ALL)---------------------+ | | +--(:VERTEX)------------------+ | | +--(:INTERSECTION)------------+ | | +--(:GRID)--------------------+ | | +--(:EDGE)--------------------+ | | +--(:FACE)--------------------+ | | +--(:WORKPLANE)---------------+ | | +--(:CENTER)------------------+ | | +--(:PROJECT)-----------------+ | | +--(:NO_PROJECT)--------------+ | | +--(:CURSOR_RANGE)--|pixels|--+
CATCH has no effect on the operation of the SELECT mechanism.
The :ALL option within 2D includes, in order of priority:
The :ALL option within 3D includes, in order of priority:
The :ALL option includes, in order of priority:
The grid will only be displayed, and caught to, when the grid points or lines are not too close together, in terms of pixels. This means that there will be occasions where you expect to see the grid, but will not. For example:
SET_CATCH_PARAMETERS :DEFAULT_2D :CENTER
Centers include the midspan of straight edges, and the centers of arcs, circles, spheres, and tori.