Functions for handling point domains. More...

Functions
WlzObject *	WlzPointsToDomObj (WlzPoints pnt, double scale, WlzErrorNum dstErr)
	Creates a domain object which coresponds to the union of the given points. More...

void *	WlzPointValueGet (WlzPointValues *pts, int idx)
	Computes the pointer to the individual value corresponding to the given index. More...

WlzPoints *	WlzPointsFromDomObj (WlzObject gvnObj, double dMin, int useFloatingPoint, int voxelScaling, int useGrey, double gMin, double gMax, double gGam, WlzErrorNum dstErr)
	Finds points which are within the given opjects domain and are seperated by at least the given minimum distance. If the given object's grey values are used, then the probability of a point being placed is proportional to: \[ \left\{ \begin{array}{ll} 0.0 & g_i < g_{min} \\ frac{(g_i - g_{min})^\gamma}{g_{max} - g_{min}} & g_i > g_{min} \end{array} \right. \] . More...

WlzPointValues *	WlzPointValuesFromDomObj (WlzPoints pdm, WlzObject domObj, WlzErrorNum *dstErr)
	Creates a new point values using the given points domain and domain object with values. Values are sampled from the domain object using the locations of the points in the points domain. More...

WlzObject *	WlzPointsToMarkers (WlzPoints pts, WlzMarkerType mType, int mSz, WlzErrorNum dstErr)
	Constructs a domain from the union of marker domains with a marker domain at each of the given point positions. More...

WlzPoints *	WlzPointsDither (WlzPoints gPts, WlzDVertex3 dSz, WlzObject resObj, WlzErrorNum *dstErr)
	Dithers the vertices of the given points by adding a random displacement within the range -d to +d, where d is the given dither size. More...

Detailed Description

Functions for handling point domains.

Author: Bill Hill

Date: December 2005

Version

Id: c5170518eb191e6f52065c09314db56a2a5b24a4

: Address: MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK.

: Copyright (C), [2012], The University Court of the University of Edinburgh, Old College, Edinburgh, UK.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Function Documentation

void* WlzPointValueGet	(	WlzPointValues *	pts,
		int	idx
	)

Computes the pointer to the individual value corresponding to the given index.

Returns: Pointer to the points value.

Parameters

pts	Given points values.
idx	Given index.

References _WlzPointValues::pSz, _WlzGreyP::v, and _WlzPointValues::values.

Referenced by WlzCMeshStrainTensorAtPts(), and WlzObjectFacts().