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FindObjAtPt_Create.md

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FindObjAtPt_Create

Description

Creates object find for objects at specified point within specified radius. The function is capable of iterating

FUNCTION FindObjAtPt_Create(
				hContainer  : HANDLE;
				objOptions  : INTEGER;
				travOptions : INTEGER;
				locX        : REAL;
				locY        : REAL;
				pickRadius  : REAL): LONGINT;
def vs.FindObjAtPt_Create(hContainer, objOptions, travOptions, locX, locY, pickRadius):
    return LONGINT

Parameters

Name Type Description
hContainer HANDLE
objOptions INTEGER AllObjs = 0; VisibleOnly = 1; SelectedOnly = 2; UnlockedOnly = 3
travOptions INTEGER Shallow = 0; Groups = 1
locX REAL
locY REAL
pickRadius REAL

Remarks

([[User:CBM-c-|c]], 2011): Was undocumented, made public by VW 2012 (1700).

([[User:CBM-c-|c]], 2008-10-15): Finds objects at the point "Loc" starting from the parent container "hContainer". The routine returns a longint as list of objects (similar to [[VS:BuildResourceList]]) which you'll use to manipulate the found objects. The suffix ''create'' stays then for ''create a list''.

  • [VS:FindObjAtPt_GetCount] will return the count of found objects
  • [[VS:FindObjAtPt_GetObj]](list, i) returns a handle to the object at index i. The index is 0-based.

It seems to ignore most object types. It will work with: lines, polylines, polygons, rectangles, arcs, 2D loci, pios. Notably it will ignore: walls, symbols, round rects, ovals, 3D polys, 3D loci, nurbs, extrudes, dimensions, slabs, roofs....

rgm, 2016-10-05 : for objOptions it's 0 for AllObjs, 1 for VisibleOnly, 2 for SelectedOnly, 3 for UnlockedOnly; travOptions is 0 for Shallow and 1 for Groups (from FindObjectAtPoint.h in the SDK).

PROCEDURE xxxxx; VAR cnt, i : INTEGER; startContainer : HANDLE; list : LONGINT; loc : VECTOR;

BEGIN GetPt(loc.x, loc.y); startContainer := NIL;

list := FindObjAtPt_Create(startContainer, 1, 0, loc.x, loc.y, 100);
cnt := FindObjAtPt_GetCount(list);

i := 0;
WHILE i < cnt DO BEGIN
	AlrtDialog(Concat('Index: ', i, ' Obj Type: ', GetTypeN(FindObjAtPt_GetObj(list, i))));
	i := i + 1;
END;
FindObjAtPt_Delete( list );

END; Run(xxxxx);

def PickPointCallback(pt): startContainer = vs.Handle(); 
list = vs.FindObjAtPt_Create(startContainer, 1, 0, pt[0], pt[1], 100)
cnt = vs.FindObjAtPt_GetCount(list)

for(i in range(cnt):
	hObj = vs.FindObjAtPt_GetObj( list, i );
	vs.AlrtDialog( 'Index: ' + str(i) + ' Obj Type: ' + str(vs.GetTypeN(hObj)) )

vs.FindObjAtPt_Delete( list )

vs.GetPt( PickPointCallback )

Version

Availability: from Vectorworks 2014

Category

  • Graphic Calculation