Introduction

DRAW Reference Manual

Point and Line Construction : Introduction

A drafting point position may be specified explicitly, for example

ORIG X300 Y250

It is also possible to construct a drafting point position, using commands such as:

ORIG MIDP position position
ORIG OFFSET 2D_vector
ORIG position DIST distance

Here, position may be any of:

•

ORIG MIDP X100 Y100 X800 Y800

•

An existing drafting point:

ORIG MIDP ID@ ID@

•

ORIG MIDP E150 N7400 U1200 E2150 N4400 U3550

•

ORIG MIDP /PUMP1/IN /PUMP1/ON

•

ORIG MIDP P0 OF /PUMP1/IN P0 OF /PUMP1/ON

•

A position on a p-line:

ORIG PLIN TOS OF /SECT1 START DIST 150

•

The 3D position of a Design item, p-point or p-line position

2D_vector specifies an offset position from the owner origin of the primitive concerned, for example

ORIG OFFS X50 Y50

distance gives a distance and a direction from a point, and may be one of the following in a NOTE or SYTM:


units_value	ANGLE value HORIZONTAL VERTICAL 2D_vector

ORIG X50 Y50 DIST 200MM ANG 30
ORIG X50 Y50 DIST 200 HORI
ORIG X50 Y50 DIST 200 VERT
ORIG X50 Y50 DIST 100 X100 Y100

For a VNOT, distance may be expressed as

units_value DESIGN direction

where direction is a 3D, p-point or p-line direction. The distance specified is a Design distance in the current View. The above syntax may also be used in most drafting commands, e.g. FPT, TPT, CPT, DEFINE, DRAG TO, LENGTH, RADIUS etc.

All point constructions are carried out in the context of the current database position. If the current element is owned by a NOTE or SYTM, a point construction will give a 2D point. 3D point constructions (for example, positioning the centre of a circle on a Design element position) are only allowed for drafting below VNOT elements.

In some cases there could be ambiguity about the point to be constructed, for example if the point were defined using a tangent to a circle, or the intersection of two circles. In cases such as this the point to be used can be qualified with a cursor hit.

The following sections describe the various types of point construction, with examples. The symbol @ denotes a cursor hit.

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